Identification_Information: Citation: Citation_Information: Originator: Rabalais, N. Publication_Date: Unknown Title: Louisiana Hypoxia Surveys 1999 Geospatial_Data_Presentation_Form: Database Description: Abstract: Two sets of CTD data were taken during the 1999 surveys of the Louisiana continental shelf. Hydrographic data were obtained with the LUMCON SeaBird 911+ CTD system and a Hydrolab Surveyor 3. Nutrient, pigment, suspended sediment, surface salinity and station information data were also acquired. Purpose: The physical, biological and chemical data collected are part of a long-term coastal Louisiana dataset. The goal is to understand physical and biological processes that contribute to the causes of hypoxia and use the data to support environmental models for use by resource managers. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19990106 Beginning_Time: Unknown Ending_Date: 19991207 Ending_Time: Unknown Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Description_of_Geographic_Extent: Louisiana coastal waters, Northwestern Gulf of Mexico. Bounding_Coordinates: West_Bounding_Coordinate: -93.7 East_Bounding_Coordinate: -89.4 North_Bounding_Coordinate: 29.8 South_Bounding_Coordinate: 28.2 Keywords: Theme: Theme_Keyword_Thesaurus: GCMD NASA's Global Change Master Dir. THEME Theme_Keyword: EARTH SCIENCE > Biosphere > Ecological Dynamics > Biogeochemical Cycles Theme_Keyword: EARTH SCIENCE > Biosphere > Ecological Dynamics > Nutrient Cycling Theme_Keyword: EARTH SCIENCE > Biosphere > Ecological Dynamics > Oxygen Demand Theme_Keyword: EARTH SCIENCE > Biosphere > Ecological Dynamics > Primary Production Theme_Keyword: EARTH SCIENCE > Human Dimensions > Environmental Impacts > Eutrophication Theme_Keyword: EARTH SCIENCE > Hydrosphere > Water Quality Theme_Keyword: EARTH SCIENCE > Hydrosphere > Water Quality > Chlorophyll Theme_Keyword: EARTH SCIENCE > Hydrosphere > Water Quality > Conductivity Theme_Keyword: EARTH SCIENCE > Hydrosphere > Water Quality > Light Transmission Theme_Keyword: EARTH SCIENCE > Hydrosphere > Water Quality > Nitrogen Compounds Theme_Keyword: EARTH SCIENCE > Hydrosphere > Water Quality > Nutrients Theme_Keyword: EARTH SCIENCE > Hydrosphere > Water Quality > Oxygen Theme_Keyword: EARTH SCIENCE > Hydrosphere > Water Quality > pH Theme_Keyword: EARTH SCIENCE > Hydrosphere > Water Quality > Suspended Solids Theme_Keyword: EARTH SCIENCE > Hydrosphere > Water Quality > Water Temperature Theme_Keyword: EARTH SCIENCE > Oceans > Coastal Processes Theme_Keyword: EARTH SCIENCE > Biosphere > Ecological Dynamics > Biogeochemical Cycles Theme_Keyword: EARTH SCIENCE > Oceans > Marine Environment Monitoring Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Chemistry > Ammonia > Ammonium Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Chemistry > Biogeochemical Cycles Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Chemistry > Chlorophyll Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Chemistry > Nitrate Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Chemistry > Nitrite Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Chemistry > Nitrogen Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Chemistry > Nutrients Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Chemistry > Oxygen Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Chemistry > pH Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Chemistry > Phosphate Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Chemistry > Pigments Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Chemistry > Silicate Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Circulation > Fronts Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Optics > Secchi Depth Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Temperature Theme_Keyword: EARTH SCIENCE > Oceans > Salinity/Density Place: Place_Keyword_Thesaurus: GCMD NASA's Global Change Master Dir. PLACE Place_Keyword: Gulf Of Mexico Place_Keyword: North Atlantic Ocean Place_Keyword: United States Of America Place_Keyword: North America Place_Keyword: Northern Hemisphere Place_Keyword: Sea Surface Access_Constraints: None Use_Constraints: 1. Dataset credit required. 2. Experience with similar datasets has shown that when data are plotted or used in further analysis, outlying values may occasionally be discovered. Please report any possible problems with the data to N. Rabalais. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Nancy N. Rabalais Contact_Organization: Louisiana Universities Marine Consortium Contact_Address: Address_Type: mailing address Address: Louisiana Universities Marine Consortium, 8124 Hwy 56 City: Chauvin State_or_Province: LA Postal_Code: 70344 Country: USA Contact_Voice_Telephone: 985 851 2800 Contact_Facsimile_Telephone: 985 851 2874 Contact_Electronic_Mail_Address: Unknown Data_Set_Credit: Rabalais, N.N., Turner, R.E. and Wiseman, Jr., W.J. Funding: Funds for the research were provided by the National Oceanic and Atmospheric Administration, Coastal Ocean Program, Grant Nos. NA86RG0341 and NA960P0112. Funds for rental of the R/V PELICAN for monthly transect C cruises were provided by National Science Foundation Grant No. OCE-9818985 to Q. Dortch, Louisiana Universities Marine Consortium. The PELICAN was supported by the NOAA grants for the summer shelfwide cruise. Security_Information: Security_Classification_System: None Security_Classification: Unclassified Security_Handling_Description: None Native_Data_Set_Environment: Windows 2000, MSAccess 2000 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: H99Hydrolab: The Hydrolab Surveyor 3 Conductivity, pH and Oxygen sensors were serviced and calibrated before deployment and maintained in accordance with Hydrolab (http://www.hydrolab.com/) recommended procedures. The Sonde and Logger are returned to the factory at least annually for inspection and service. H99Nutrient: Nutrient analyses were conducted using a Technicon (http://www.techniconinstruments.com/) autoanalyzer by Tom Oswald under the supervision of R. E. Turner. H99Pigment: The Turner Designs model 10 and model 10 AU fluorometers were calibrated for chlorophyll a against a chemical supply house chlorophyll a standard measured on a spectrophotometer yearly. During cruises, the fluorometer was blanked and calibrated daily in accordance with Turner Designs recommended procedures. Beginning in June 1999, a Turner Designs model 10 AU replaced the model 10. Each time the model 10 AU was moved, it was tested with a Turner 10-AU solid standard. Pigment measurements were supervised and quality controlled by Nancy Rabalais. H99SeaBird: Sea-Bird SBE 13-01 dissolved oxygen sensors, the Paroscientific Digiquartz(r) pressure sensor, the SBE 3-01/F temperature sensors, SBE 5-01 pumps, and the SBE 4-01/0 Conductivity sensors were factory tested and calibrated at Sea-Bird (http://www.seabird.com/) recommended intervals and maintained and serviced by RV Pelican Electronic Technical support staff in accordance with Sea-Bird procedures. The Sea Tech 500m Fluorometer and Sea Tech 5.0 cm Transmissometer were factory tested and calibrated at Sea Tech recommended intervals and maintained and serviced by RV Pelican Electronic Technical support staff in accordance with Sea Tech procedures. Note: WET Labs acquired SEA Tech June 1, 1998, (http://www.wetlabs.com/). The Wet Labs WetStar fluorometer was maintained in accordance with Wet Labs recommendations by RV Pelican Electronic Technical support staff. The Chelsea Fluorometer was also maintained by RV Pelican Electronic Technical support staff in accordance with Chelsea recommended procedures (http://www.chelsea.co.uk/). For the months January - June and August, the calibration of the SeaBird oxygen sensors was accomplished as follows. A large tub of clean seawater was mixed and aerated for 24 hours. The Sea-Bird CTD package was placed in the oxygen-saturated water bath for the next hour. The Hydrolab CTD, freshly calibrated, was also placed in the bath. Both CTD systems were powered up. The SeaBird Deck unit and Hydrolab logger were observed. Time for sensor equilibration was allowed. The manufacturers stated +/- 0.2mg/L as the error allowance for both SeaBird and Hydrolab oxygen sensors. SeaBird and Hydrolab oxygen values were compared. If the sensors agreed within 0.4mg/L, no further action was taken. If sensor values were more than 0.4mg/L apart, The Hydrolab value was used for the "W" value and the SeaBird oxygen sensor was calibrated using the procedure described in Seabird APPLICATION NOTE NO. 13-1, Rev. D. At the beginning of the July shelfwide cruise, oxygen sensors were calibrated using the procedures described in Seabird APPLICATION NOTE NO. 13-1, Rev. D. The Winkler Titration (OXFITW) oxygen value was determined chemically from replicate samples processed using a Mettler DL21 Titrator (http://www.mt.com/). Shipboard Winkler titrations during the cruise were used to develop a regression against CTD data. Winkler titrations and the OXFITW procedure were used to check the SeaBird oxygen sensors at the beginning of the September - December cruises. The September and October cruises were made on RV Acadiana. On those cruises, the General Oceanics CTD rosette was not used and a SeaBird SeaCat CTD was used instead of the SeaBird 911+ CTD used on Pelican cruises. A pumped Sea-Bird SBE 13-01 dissolved oxygen sensor was employed on each of the September and October cruises. The September configuration file was used during the October cruise because it gave better post-calibration results than an October calibration adjustment attempt. Winkler titrations were conducted under the supervision of Nancy Rabalais. Data reductions from the SeaBird were generated by Ben Cole and quality controlled by Nancy Rabalais. H99Stn: Times and locations of operations were acquired from RV Pelican's Multiple Instrument Data Acquisition System (MIDAS), which was maintained by the ship's electronic staff. Navigational data were acquired from a Starlink (http://www.starlinkdgps.com/) differential GPS or a Trimble (http://www.trimble.com/)GPS with a Micronet Receiver Station with sub 5-meter accuracy. Station depths were logged from the ship's Odom Echotrac II (http://www.odomhydrographic.com/) fathometer. The Secchi disk depths were measured by hand using standard protocol. During the September and October cruises on the RV Acadiana, RV Pelican's Starlink and Trimble GPS units were transferred to Acadiana. Position data were logged from the Starlink and Trimble GPS units. Station depths were logged from Acadiana's fathometer. H99PortaSal: The samples were analyzed in the lab by Guildline Instruments PortaSal, using Guildine methods (http://www.guildline.ca/). Salinity analyses were conducted by Jim Lee under the supervision of R. E. Turner. H99MIDAS: Suspended sediment concentrations were supervised and quality controlled by Nancy Rabalais. Times and locations of operations were acquired from the ships MIDAS system (described above in H99Stn). N. Rabalais performed an additional procedure in quality-control/quality-assurance by evaluating relationships between the data in H99PortaSal, H99Hydrolab, H99Nutrient, H99Pigment, H99Stn and H99MIDAS. Logical_Consistency_Report: During monthly surveys conducted in other months, shipboard Winkler titrations for regressions were not made due to logistical constraints. Fewer stations were sampled and water columns were often well mixed, making the considerable effort involved in titrating an inefficient allocation of resources. A suitable range of data could not be acquired to develop a strong regression. Hydrolab data were derived from a pre- and post-calibrated instrument. Therefore, there is often disagreement between SeaBird and Hydrolab oxygen values. It is the opinion of the PI, Nancy Rabalais, that the Hydrolab data for the monthly cruises are the more reliable data. For the July SeaBird data, Winkler titrations were used to develop a regression which was used to correct the SeaBird oxygen data if necessary. The data for the SeaBird and the Hydrolab compare better for the shelfwide July cruise. Completeness_Report: There were problems with the SeaBird CTD plumbing configuration, software configuration, pump and deck unit failure during the February 2nd cruise. Oxygen data values were considered to be unreasonably high. Oxygen data were not included in the dataset because they were considered unreliable. August 24th Hydrolab data were not acquired due to a battery problem. SeaBird FlC (fluorescence Chelsea), FlS (Fluorescence Sea-Tech) and Xmiss (transmission percent) data were not acquired during the September 14th and October 12th surveys on RV Acadiana because of the reduced number of instruments in the SeaCat CTD package. November 4th station C9 Seabird oxygen data were not included because the oxygen sensor failed. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: All station positions, except those acquired during the September and October cruises on RV Acadiana, were logged from RV Pelican's differential GPS at the beginning of sampling operations. GPS manufacturer's accuracy claim is 1-5 meters 95% of the time. Wind, currents and tidal forces may move the ship from the beginning position. Station positions acquired during the September and October cruises on RV Acadiana were logged from the ship's NorthStar 800 LORANC. The manufacturer describes the accuracy to be within 30 meters 90% of the time. On the following dates hydrocasts were made from a small boat tied to the oilfield platform at station C6B: 19990301, 19990322, 19990428, 19990513, 19990520, 19990603, 19990624, 19990712, 19990730, 19990818 and 19990907. Lineage: Methodology: Methodology_Type: Field SeaBird Methodology_Description: The SeaBird CTD number of scans to average in the deck unit was set to one. At the beginning of each hydrocast the entire CTD/Rosette package was soaked while submerged 0.5m to 1.0m below the surface until pump flow and oxygen values observed via the Sea-Bird deck unit indicated the system was operating correctly. In order to minimize the effect of delays in oxygen sensor response time caused by temperature, sensor condition and plumbing configuration, the CTD package was lowered as close to dead slow as possible. The sensor packages were located below the Niskin bottles and rosette. At stations where the watch chief deemed the structure of the oxygen profile contained features useful in post-processing the oxygen data (AlignCTD), the CTD package was raised at the same speed it was lowered. At all other stations, the upcast is rapid in order to save time. Methodology: Methodology_Type: Field Hydrolab C Transect Methodology_Description: Deployment: The Hydrolab CTD was attached by chain to a lead weight. The weight was lowered to the bottom by hydrowire. With the weight on the bottom, the Hydrolab sonde was positioned just above the bottom. When the oxygen sensor stabilized, a data record of all the sensor values was stored electronically. The sonde was raised in approximately 1.0-meter increments, after D.O. sensor stabilization, data records were stored. When the Hydrolab was raised a depth of two to three meters from the surface, The sonde was raised, and records stored, in approximately 0.5-meter increments until finally a record was stored with the sonde submerged but as close as possible to the surface. Methodology: Methodology_Type: Field Hydrolab shelfwide Methodology_Description: Deployment: Due to limitations of time and funding, mid-water depths were generally not sampled with the Hydrolab CTD during the shelfwide cruise. The Hydrolab CTD was attached by chain to a lead weight. The weight was lowered to the bottom by hydrowire. With the weight on the bottom, the Hydrolab sonde was positioned just above the bottom. When the oxygen sensor stabilized, a data record of all the sensor values was stored electronically. The sonde was raised in approximately 0.5-meter increments, after D.O. sensor stabilization, data records were stored. After storing data for the few meters closest to the bottom, the Hydrolab was raised to two to three meters from the surface and a data record was saved. The sonde was raised, and records stored, in approximately 0.5-meter increments until finally a record was stored with the sonde submerged but as close as possible to the surface. Methodology: Methodology_Type: Field Pigment Methodology_Description: Water for chlorophyll analysis (30 - 100 ml) was filtered on board ship through GF/F (0.7 micron) filters, which were then fixed in 5 ml of DMSO/90% acetone (40/60) solution, allowed to extract for at least two hours in the dark, then measured pre- and post-acidification on a Turner Model 10 fluorometer. Beginning in June 1999, a Turner Model 10 AU was used to measure the samples. Methodology: Methodology_Type: Field PortaSal Methodology_Description: Water was collected in an acid-washed, triple-rinsed 500ml Nalgene jar from a twice-rinsed bucket of surface water. The jar lid was secured tightly to minimize evaporation. Methodology: Methodology_Type: Field Station Locations Methodology_Description: C transect lies South and East of Terrebonne Bay. Nine cross-shelf stations on C transect were sampled monthly. Additional water-column hydrology measurements were made at station C6B when other research missions provided opportunities at that location. During the July shelfwide cruise, stations were occupied along 14 generally North-South transects across the Louisiana coastal shelf. Station depths ranged from 4.6 to 61.8 meters. The objective was to delimit and describe the area of midsummer bottom dissolved oxygen less than 2 (mg/L). Due to limitations of equipment, time and funding, this was not always possible. Northern end stations of transects were chosen based on the survey vessel's minimum depth limits for each longitude. The northern extent of hypoxia was not reached on nine transects. Optimally, one or two stations south of the southern most station with bottom dissolved oxygen less than 2 (mg/L) were sampled. The limit of hypoxia on the southern ends of all transects, except transect J, was reached. The limit of hypoxia was not reached at station M3 on the western end of the survey. The limit of hypoxia was not reached at stations A'1, A'2 and A'3 on the eastern end of the survey. Methodology: Methodology_Type: Field Nutrient Methodology_Description: Care was taken that the collector's hands were clean and avoided touching the sample water. Gloves were worn when three replicate sample vials and caps were triple rinsed with sample before vial filling and closing. Samples were not filtered. The sample vials were frozen for later analysis in the laboratory. Methodology: Methodology_Type: Field SPM Methodology_Description: Water (approximately 300 to 1000 ml) collected for suspended sediment samples was filtered on board ship through pre-weighed GF/F filters, rinsed with distilled water. The filters were placed in Petri dishes and frozen for later analysis. Methodology: Methodology_Type: Field water samples Methodology_Description: Water for chlorophyll, nutrient analyses and PortaSal salinity was collected from the surface by twice-rinsed bucket, from mid-water in 5-l Niskin bottles on the Seabird CTD/rosette system and from bottom in a 5-l bottom tripping Niskin deployed on the Hydrolab hydrowire. Depth values of 0 indicate a bucket sample collected from the surface of the water. Deepest depths of water samples were from the bottom-tripping Niskin and correspond to the deepest depth recorded from the Hydrolab. Other depths indicate the p-sensor reading for 5-l Niskin bottles on the Seabird rosette. The Seabird p-sensor was located approx. 1 meter below the mid-point of the 5-l Niskin. Water for Suspended Sediment samples was collected by tapping into discharge of the shipâ€(tm)s seawater flow through system MIDAS. MIDAS intake was 2 -3 meters below the surface. The watch chief observed MIDAS navigational data, when distance to station was 0.3 miles, a triple-rinsed jar (1000ml) was collected from the silicon MIDAS discharge tube in the ship's bottle lab. Finally, collection time was logged. Methodology: Methodology_Type: Lab SPM Methodology_Description: Suspended sediment filters were dried at 40 - 60 degrees centigrade for 24 hours. Filters were weighed. Total suspended sediments was derived from volume filtered, pre-weight and post weight values. Methodology: Methodology_Type: Lab Nutrient Methodology_Description: Nitrogen and phosphorus are analyzed according to methods described in EPA publication EPA 600/4-79-020 (1979), method 350.1 for ammonia-N, method 353.2 for nitrate/nitrite-N, and method 365.1 for phosphate-P. Silicate is analyzed according to Technicon Industrial method 186-72 W/B (1977). Methodology: Methodology_Type: Lab SeaBird Methodology_Description: Sea-Bird CTD data were acquired using Seasoft version 4.225 in all months except September and October when version 4.217 was used. Data were post processed using Seasoft version 4.225. All scans were processed without averaging or interpolation with a bin size of one scan. In order to improve alignment between oxygen sensor values and other CTD sensor values, the Seasoft module ALIGNCTD was used, when possible, to determine which advance best compensated for the delay in oxygen sensor response time. When Seabird data were processed, dissolved oxygen was advanced relative to temperature and conductivity values as follows: January, November and December +4.25 seconds; March, April, May, June and August +4.5 seconds; July +4.333 seconds. Data values reported are from downcasts. Downcast scans selected for each CTD station were chosen to illustrate: 1) data values as near to the surface as possible, 2) data values at whole meter increments, and 3) data values as close to the bottom as the CTD was lowered. In certain cases where data values of a parameter changed significantly between whole meter increments, 0.1- or 0.2-meter scans were selected. Process_Step: Process_Description: Unknown. Process_Date: Unknown Cloud_Cover: Unknown Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 201 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0001 Longitude_Resolution: 0.0001 Geographic_Coordinate_Units: Degrees and decimal minutes Geodetic_Model: Horizontal_Datum_Name: WGS84 Ellipsoid_Name: WGS84 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: H99Hydrolab Entity_Type_Definition: The table lists Hydrolab CTD station identification number, record date, station name, record time, record depth, dissolved oxygen, temperature, specific conductance, salinity, pH, percent oxygen saturation and density sigma-t. There are 2827 records. Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: Date Attribute_Definition: Date when Hydrolab record was saved. (Date can be different for suspended sediment, Hydrolab CTD cast and SeaBird CTD cast at same station). Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 19990106 Range_Domain_Maximum: 19991207 Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Density Attribute_Definition: Density sigma-t Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7.93 Range_Domain_Maximum: 25.09 Attribute_Units_of_Measure: Density sigma-t Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Depth Attribute_Definition: Depth of Hydrolab pressure sensor Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0 Range_Domain_Maximum: 63.2 Attribute_Units_of_Measure: Meters Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: DO Attribute_Definition: Dissolved oxygen Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.04 Range_Domain_Maximum: 16.93 Attribute_Units_of_Measure: mg/L Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: DOPctSat Attribute_Definition: Oxygen percent saturation Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.7 Range_Domain_Maximum: 194.4 Attribute_Units_of_Measure: Percent Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: pH Attribute_Definition: pH Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7.5 Range_Domain_Maximum: 8.76 Attribute_Units_of_Measure: pH units Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Salin Attribute_Definition: Salinity Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 16.2 Range_Domain_Maximum: 36.5 Attribute_Units_of_Measure: psu Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: SpCond Attribute_Definition: Specific conductance Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 26.6 Range_Domain_Maximum: 55 Attribute_Units_of_Measure: mS/cm Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Sta Attribute_Definition: Station name of location sampled Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7 Range_Domain_Maximum: 365 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Temp Attribute_Definition: Temperature Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 12.49 Range_Domain_Maximum: 32.41 Attribute_Units_of_Measure: Degrees centigrade Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Time Attribute_Definition: Time when Hydrolab record was saved Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 00:06:28 Range_Domain_Maximum: 23:58:16 Attribute_Units_of_Measure: HH:mm:ss Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Detailed_Description: Entity_Type: Entity_Type_Label: H99MIDAS Entity_Type_Definition: The table lists sample date, Latitude, longitude, salinity, suspended sediments, station name, station identification number and sample time. Date, time, salinity and position data were collected from the survey vessel's MIDAS (Multi-Input_Data-Acquisition-System). There are 118 records. Latitude and Longitude values listed in table H99MIDAS are more precise positions for suspended sediment samples. See also: suspended sediment section of field water sample Methodology. Entity_Type_Definition_Source: Producer defined. Attribute: Attribute_Label: Date Attribute_Definition: Date when the SPM (suspended sediment) sample was collected from the survey ship's MIDAS. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 19990106 Range_Domain_Maximum: 19991207 Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude of sampling station. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 28.3921 Range_Domain_Maximum: 29.7052 Attribute_Units_of_Measure: Decimal degrees Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: -9999 Attribute_Value_Accuracy_Explanation: Latitude value was recorded from the ship's differential GPS when suspended sediment sample was collected. GPS manufacturer's accuracy claim is 1-5 meters 95% of the time. Wind, currents and tidal forces may move the ship from the beginning position. Survey vessel was not anchored during sampling. Position at end of sample operations may have changed from beginning operations location. Vessel drift was generally less than 0.3 nm. An Accuracy value of -9999 was entered because accuracy could not be determined. Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude of sampling station. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -93.6539 Range_Domain_Maximum: -89.414 Attribute_Units_of_Measure: Decimal degrees Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: -9999 Attribute_Value_Accuracy_Explanation: Longitude value was recorded from the ship's differential GPS when suspended sediment sample was collected. GPS manufacturer's accuracy claim is 1-5 meters 95% of the time. Wind, currents and tidal forces may move the ship from the beginning position. Survey vessel was not anchored during sampling. Position at end of sample operations may have changed from beginning operations location. Vessel drift was generally less than 0.3 nm. An Accuracy value of -9999 was entered because accuracy could not be determined. Attribute: Attribute_Label: SalM Attribute_Definition: Salinity as measured by RV Pelican's SeaBird SBE 21 Thermosalinograph in the flow-through seawater component of the ship's MIDAS system. NB September and October 1999 salinities were measured with a SeaBird SeaCat in a similarly configured system on RV Acadiana. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.38 Range_Domain_Maximum: 35.67 Attribute_Units_of_Measure: PSU Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: SPM Attribute_Definition: Total suspended sediments collected by tapping into the flow-through seawater component of the ship's MIDAS system. September and October 1999 SPM samples were collected from twice-rinsed buckets of surface water. There are 188 records. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.62 Range_Domain_Maximum: 60 Attribute_Units_of_Measure: mg/L Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Sta Attribute_Definition: Station name of location sampled. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Unrepresentable_Domain: Character field Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 356 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: TimeM Attribute_Definition: Time when SPM sample was collected Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0:11:21 Range_Domain_Maximum: 23:50:05 Attribute_Units_of_Measure: Hours:minutes:seconds Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Detailed_Description: Entity_Type: Entity_Type_Label: H99Nutrient Entity_Type_Definition: The table lists station vial number, NH4, NO2, NO2+NO3, NO3, PO4 and SiO3 values at depths. There are 398 records. Entity_Type_Definition_Source: Producer defined. Attribute: Attribute_Label: Depth Attribute_Definition: Bottom sample depths are depths of Hydrolab p sensor, 0.0 depth = bucket sample. Samples at 6.5m and 14.0m and the bottom sample at Station C9 8/24/99 were collected using Niskin bottles on the SeaBird rosette. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 63.2 Attribute_Units_of_Measure: Meters Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: NH4 Attribute_Definition: Ammonium Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.1 Range_Domain_Maximum: 45 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: NO2 Attribute_Definition: Nitrite Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.1 Range_Domain_Maximum: 12.6 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: NO2+NO3 Attribute_Definition: Nitrite + Nitrate Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.2 Range_Domain_Maximum: 117 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: NO3 Attribute_Definition: Nitrate Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 116 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: PO4 Attribute_Definition: Phosphate Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.1 Range_Domain_Maximum: 6.5 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: SiO3 Attribute_Definition: Silicate Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.3 Range_Domain_Maximum: 120.4 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Sta Attribute_Definition: Station name of location sampled Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 356 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Vial Attribute_Definition: Number identifying vial in which sample was collected. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 221 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Detailed_Description: Entity_Type: Entity_Type_Label: H99Pigment Entity_Type_Definition: The table lists sample date, sample depth, mean chlorophyll a, Fo/Fa ratio, mean phaeopigments, mean total pigments, station name and station identification number. There are 398 records. Entity_Type_Definition_Source: Producer defined. Attribute: Attribute_Label: Date Attribute_Definition: Date station was sampled. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 19990106 Range_Domain_Maximum: 19991207 Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Depth Attribute_Definition: Depth of Hydrolab p sensor, 0.0 depth = bucket sample. 6.5m and 14m samples and the bottom sample at station C9 8/24/99 were collected using Niskin bottles on the Seabird rosette. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 63.2 Attribute_Units_of_Measure: Meters Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: MeanC Attribute_Definition: Mean Chlorophyll a Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 54.88 Attribute_Units_of_Measure: µg/L Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: MeanF Attribute_Definition: Mean Fo/Fa ratio. F(original), F(acidified). Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.46 Range_Domain_Maximum: 2.06 Attribute_Units_of_Measure: Fo/Fa ratio Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: MeanP Attribute_Definition: Mean Phaeopigments Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 151.8 Attribute_Units_of_Measure: µg/L Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Sta Attribute_Definition: Station name of location sampled Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 356 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Total Attribute_Definition: Total pigments Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.39 Range_Domain_Maximum: 151.8 Attribute_Units_of_Measure: µg/L Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Detailed_Description: Entity_Type: Entity_Type_Label: H99PortaSal Entity_Type_Definition: The table lists sample depth and sample salinity (psu), station name and station identification number of values measured using a Guildline Instruments PortaSal. There are 229 records. Entity_Type_Definition_Source: Producer defined. Attribute: Attribute_Label: Depth Attribute_Definition: Depth of Hydrolab p sensor, 0.0 depth = bucket sample. The bottom sample at station C9 8/24/99 was collected using Niskin bottles on the SeaBird rosette. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 30.1 Attribute_Units_of_Measure: Meters Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: PortaSal Attribute_Definition: Salinity Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.07 Range_Domain_Maximum: 36.315 Attribute_Units_of_Measure: psu Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Sta Attribute_Definition: Station name of location sampled Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Character field Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19901207 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 356 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Detailed_Description: Entity_Type: Entity_Type_Label: H99SeaBird Entity_Type_Definition: The table lists SeaBird CTD conductivity, depth, FlC (Chelsea fluorometer voltage), FlS (SeaTech fluorometer voltage), dissolved oxygen, oxygen percent saturation, salinity, density sigma-t, station name, station identification number, temperature, WetStar fluorometer voltage and light transmissivity. There are 3493 records. Entity_Type_Definition_Source: Producer defined. Attribute: Attribute_Label: COS/m Attribute_Definition: Conductivity Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.618123 Range_Domain_Maximum: 5.957732 Attribute_Units_of_Measure: S/m Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: DepS Attribute_Definition: Depth of SeaBird pressure sensor. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.328 Range_Domain_Maximum: 61.584 Attribute_Units_of_Measure: Meters Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: FlC Attribute_Definition: in vivo fluorescence. Chelsea fluorometer voltage. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.01019 Range_Domain_Maximum: 7.285 Attribute_Units_of_Measure: Voltage Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: FlS Attribute_Definition: in vivo fluorescence. SeaTech fluorometer voltage. N.B. 30 is the maximum value for the instrument. Values of 30 indicate in vivo fluorescence was equal to or greater than what the instrument measured. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.3346 Range_Domain_Maximum: 30 Attribute_Units_of_Measure: Voltage Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: OxMg/L Attribute_Definition: Dissolved oxygen Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.00886 Range_Domain_Maximum: 14.55184 Attribute_Units_of_Measure: mg/L Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: OxPS Attribute_Definition: Percent oxygen saturation. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.1302 Range_Domain_Maximum: 191.5108 Attribute_Units_of_Measure: Percent Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Sal00 Attribute_Definition: Salinity Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 16.2414 Range_Domain_Maximum: 36.2044 Attribute_Units_of_Measure: psu Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Sigma-t00 Attribute_Definition: Density sigma-t Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7.7476 Range_Domain_Maximum: 25.2665 Attribute_Units_of_Measure: sigma-t Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Sta Attribute_Definition: Station name of location sampled. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Unrepresentable_Domain: Character field Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7 Range_Domain_Maximum: 356 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: T068 Attribute_Definition: Water Temperature Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 12.0932 Range_Domain_Maximum: 33.1086 Attribute_Units_of_Measure: Degrees centigrade Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: WetStar Attribute_Definition: In vivo fluorescence. WetStar fluorometer voltage. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.8445 Range_Domain_Maximum: 13.7357 Attribute_Units_of_Measure: Voltage Beginning_Date_of_Attribute_Values: 19990914 Ending_Date_of_Attribute_Values: 19991012 Attribute: Attribute_Label: Xmiss Attribute_Definition: Percent light transmission Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.13 Range_Domain_Maximum: 102.39 Attribute_Units_of_Measure: Percent Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Detailed_Description: Entity_Type: Entity_Type_Label: H99Stn Entity_Type_Definition: The table lists altimeter height, date, fathometer depth, latitude, longitude, secchi disk depth, station name, station identification number, time of Hydrolab CTD cast and time of SeaBird CTD cast. There are 201 records. Entity_Type_Definition_Source: Producer defined. Attribute: Attribute_Label: Alt Attribute_Definition: Height of SeaBird CTD package above the bottom. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 5 Attribute_Units_of_Measure: Feet Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Date Attribute_Definition: Date samples were collected at station. (Date may be different for SPM sample, Hydrolab CTD cast and SeaBird CTD cast at same station). Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 19990106 Range_Domain_Maximum: 19991207 Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Fath Attribute_Definition: Depth of Station as measured by ship's fathometer, corrected for hull depth. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4.6 Range_Domain_Maximum: 61.8 Attribute_Units_of_Measure: Meters Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude of sampling station. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 28.3915 Range_Domain_Maximum: 29.706 Attribute_Units_of_Measure: Decimal degrees. Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: -9999 Attribute_Value_Accuracy_Explanation: Latitude value was recorded from the ship's differential GPS at the beginning of sampling operations. GPS manufacturer's accuracy claim is 1-5 meters 95% of the time. Wind, currents and tidal forces may move the ship from the beginning position. Survey vessel was not anchored during sampling on July shelfwide cruise. Vessel was only occasionally anchored or tied to an oilfield structure during other monthly cruises. Position at end of sample operations may have changed from beginning operations location. Vessel drift was generally less than 0.3 nm. An Accuracy value of -9999 was entered because accuracy could not be determined. Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude of sampling station. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -93.6535 Range_Domain_Maximum: -89.4758 Attribute_Units_of_Measure: Decimal degrees. Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: -9999 Attribute_Value_Accuracy_Explanation: Longitude value was recorded from the ship's differential GPS at the beginning of sampling operations. GPS manufacturer's accuracy claim is 1-5 meters 95% of the time. Wind, currents and tidal forces may move the ship from the beginning position. Survey vessel was not anchored during sampling on July shelfwide cruise. Vessel was only occasionally anchored or tied to an oilfield structure during other monthly cruises. Position at end of sample operations may have changed from beginning operations location. Vessel drift was generally less than 0.3 nm. An Accuracy value of -9999 was entered because accuracy could not be determined. Attribute: Attribute_Label: Secc Attribute_Definition: Secchi disk depth. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.2 Range_Domain_Maximum: 16 Attribute_Units_of_Measure: meters Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: Sta Attribute_Definition: Station name of location sampled. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Unrepresentable_Domain: Character field Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 356 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: TimeHL Attribute_Definition: Time of beginning of Hydrolab CTD cast as well as time of Pigment, PortaSal and Nutrient samples. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 00:06:28 Range_Domain_Maximum: 23:53:27 Attribute_Units_of_Measure: HH:mm:ss Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Attribute: Attribute_Label: TimeSB Attribute_Definition: Time of beginning of Seabird CTD cast. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 00:15 Range_Domain_Maximum: 23:55 Attribute_Units_of_Measure: HH:mm Beginning_Date_of_Attribute_Values: 19990106 Ending_Date_of_Attribute_Values: 19991207 Overview_Description: Entity_and_Attribute_Overview: The related data tables H99Hydrolab, H99MIDAS, H99Nutrient, H99Pigment, H99PortaSal and H99SeaBird contain spatial, temporal, physical and biological water quality data acquired during the 1999 Hypoxia Surveys of the Louisiana coastal waters. Each table contains a StnID field that can be used to key joins with other tables. Entity_and_Attribute_Detail_Citation: For detailed attribute information contact N. Rabalais. Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Nancy N. Rabalais Contact_Organization: Louisiana Universities Marine Consortium Contact_Address: Address_Type: mailing address Address: Louisiana Universities Marine Consortium, 8124 Hwy 56 City: Chauvin State_or_Province: LA Postal_Code: 70344 Country: USA Contact_Voice_Telephone: 985 851 2800 Contact_Facsimile_Telephone: 985 851 2874 Contact_Electronic_Mail_Address: Unknown Distribution_Liability: I, the data requestor, agree to credit the data originators in any publications, reports or presentations generated from this data. I also accept that although these data have been processed successfully on a computer system at the Louisiana Universities Marine Consortium, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. I recognize that these data are best acquired from the originator and not from a secondary source. I recognize that careful attention must be paid to the contents of the metadata file associated with these data. I will not hold Louisiana Universities Marine Consortium liable for improper or incorrect use of the data described and/or contained herein. This disclaimer applies both to individual use of the data and aggregate use with other data. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: MDB Format_Version_Number: 9 File_Decompression_Technique: File compression not used. Transfer_Size: 0.816 Digital_Transfer_Option: Offline_Option: Offline_Media: 3-1/2 inch floppy disk or CDROM Recording_Format: DOS Copy Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: LAHS1999.mdb Access_Instructions: Contact Distributor. Fees: None Ordering_Instructions: Call or write the Distributor with requests for data sets. Standard_Order_Process: Non-digital_Form: Contact distributor. Fees: None. Custom_Order_Process: Contact distributor Metadata_Reference_Information: Metadata_Date: 20030605 Metadata_Review_Date: 20030615 Metadata_Future_Review_Date: 20130615 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Ben Cole or Adam Sapp Contact_Organization: Louisiana Universities Marine Consortium Contact_Address: Address_Type: mailing address Address: LUMCON, 8124 Hwy 56 City: Chauvin State_or_Province: LA Postal_Code: 70344 Country: USA Contact_Voice_Telephone: 985 851 2800 Contact_Facsimile_Telephone: 985 851 2874 Contact_Electronic_Mail_Address: Unknown Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time