Identification_Information: Citation: Citation_Information: Originator: Rabalais, N. Publication_Date: Unknown Title: Louisiana Coastal Hypoxia Shelfwide Survey, July 1993S Geospatial_Data_Presentation_Form: Database Description: Abstract: Hydrographic data were collected during a July 24 - 30, 1993 survey of the Louisiana continental shelf. Nutrient, pigment, suspended sediment 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: 19930724 Beginning_Time: Unknown Ending_Date: 19930730 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: -93.42 East_Bounding_Coordinate: -89.41 North_Bounding_Coordinate: 29.71 South_Bounding_Coordinate: 28.44 Data_Set_G-Polygon: Data_Set_G-Polygon_Outer_G-Ring: G-Ring_Point: G-Ring_Latitude: 29.71 G-Ring_Longitude: -93.42 G-Ring_Point: G-Ring_Latitude: 28.44 G-Ring_Longitude: -89.41 G-Ring_Point: G-Ring_Latitude: 28.44 G-Ring_Longitude: -93.42 G-Ring_Point: G-Ring_Latitude: 29.71 G-Ring_Longitude: -89.41 G-Ring_Point: G-Ring_Latitude: 29.71 G-Ring_Longitude: -93.42 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 > Suspended Solids Theme_Keyword: EARTH SCIENCE > Hydrosphere > Water Quality > Water Temperature Theme_Keyword: EARTH SCIENCE > Oceans > Coastal Processes 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 > 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 Theme_Keyword: EARTH SCIENCE > Oceans > Water Quality 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 Oceanographic and Atmospheric Administration, Nutrient Enhanced Coastal Ocean Productivity (NECOP) program. Security_Information: Security_Classification_System: None Security_Classification: Unclassified Security_Handling_Description: None Native_Data_Set_Environment: Windows 2000, MSAccess 2000 Analytical_Tool: Analytical_Tool_Description: Autoanalyzer Tool_Access_Information: Tool_Access_Instructions: Unknown. Tool_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Tom Oswald Contact_Address: Address_Type: mailing address Address: 110 Coastal Studies Coastal Ecology Institute LSU City: Baton Rouge State_or_Province: LA Postal_Code: 70803 Contact_Voice_Telephone: 225 388-6700 Contact_Electronic_Mail_Address: Unknown Analytical_Tool: Analytical_Tool_Description: Transmissometer Tool_Access_Information: Tool_Access_Instructions: Sea Tech, Inc. was acquired by Wet Labs, Inc. as of June 1, 1998. Contact Wet Labs, Inc. Tool_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Wet Labs, Inc. Contact_Address: Address_Type: mailing and physical address Address: 620 Applegate St. City: Philomath State_or_Province: OR Postal_Code: 97370-0518 Country: US Contact_Voice_Telephone: 541 929-5650 Analytical_Tool: Analytical_Tool_Description: Beckman type dissolved oxygen sensor. Tool_Access_Information: Tool_Access_Instructions: Contact Sea-Bird Electronics, Inc. Tool_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Sea-Bird Electronics, Inc. Contact_Address: Address_Type: mailing and physical address Address: 1808 136th Place NE City: Bellevue State_or_Province: WA Postal_Code: 98005 Country: USA Contact_Voice_Telephone: 425 643-9866 Contact_Electronic_Mail_Address: seabird@seabird.com Analytical_Tool: Analytical_Tool_Description: Conductivity sensor. Tool_Access_Information: Tool_Access_Instructions: Contact Sea-Bird Electronics, Inc. Tool_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Sea-Bird Electronics, Inc. Contact_Address: Address_Type: mailing and physical address Address: 1808 136th Place NE City: Bellevue State_or_Province: WA Postal_Code: 98005 Country: USA Contact_Voice_Telephone: 425 643-9866 Contact_Electronic_Mail_Address: seabird@seabird.com Analytical_Tool: Analytical_Tool_Description: CTD Tool_Access_Information: Tool_Access_Instructions: Contact Sea-Bird Electronics, Inc. Tool_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Sea-Bird Electronics, Inc. Contact_Address: Address_Type: mailing and physical address Address: 1808 136th Place NE City: Bellevue State_or_Province: WA Postal_Code: 98005 Country: USA Contact_Voice_Telephone: 425 643-9866 Contact_Electronic_Mail_Address: seabird@seabird.com Analytical_Tool: Analytical_Tool_Description: Temperature sensor. Tool_Access_Information: Tool_Access_Instructions: Contact Sea-Bird Electronics, Inc. Tool_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Sea-Bird Electronics, Inc. Contact_Address: Address_Type: mailing and physical address Address: 1808 136th Place NE City: Bellevue State_or_Province: WA Postal_Code: 98005 Country: USA Contact_Voice_Telephone: 425 643-9866 Contact_Electronic_Mail_Address: seabird@seabird.com Analytical_Tool: Analytical_Tool_Description: Pressure sensor. Tool_Access_Information: Tool_Access_Instructions: Contact Sea-Bird Electronics, Inc. Tool_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Sea-Bird Electronics, Inc. Contact_Address: Address_Type: mailing and physical address Address: 1808 136th Place NE City: Bellevue State_or_Province: WA Postal_Code: 98005 Country: USA Contact_Voice_Telephone: 425 643-9866 Contact_Electronic_Mail_Address: seabird@seabird.com Analytical_Tool: Analytical_Tool_Description: Fluorometer Tool_Access_Information: Tool_Access_Instructions: Sea Tech, Inc. was acquired by Wet Labs, Inc. as of June 1, 1998. Contact Wet Labs, Inc. Tool_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Wet Labs, Inc. Contact_Address: Address_Type: mailing and physical address Address: 620 Applegate St. City: Philomath State_or_Province: OR Postal_Code: 97370-0518 Country: US Contact_Voice_Telephone: 541 929-5650 Analytical_Tool: Analytical_Tool_Description: Fathometer Tool_Access_Information: Tool_Access_Instructions: Japan Radio Co. Ltd. Tool_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Japan Radio Co. Ltd. Contact_Address: Address_Type: mailing address Address: Akasaka Twin Tower (Main), 17-22, Akasaka 2-chome, Minato-ku, City: TOKYO State_or_Province: Unknown Postal_Code: Unknown Country: JAPAN Contact_Voice_Telephone: 81-3-3584-8836 Analytical_Tool: Analytical_Tool_Description: A navigation device that uses a GPS (Global Positioning System) when available and LORAN (a radio navigation system operated by the U.S. Coast Guard) when GPS is not available. Tool_Access_Information: Tool_Access_Instructions: Contact Northstar Technologies Tool_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Northstar Technologies Inc. Contact_Address: Address_Type: mailing address Address: Northstar Technologies City: Acton State_or_Province: Mass. Postal_Code: 01720 Contact_Voice_Telephone: 978-897-6600 Contact_Electronic_Mail_Address: service@northstarcmc.co Analytical_Tool: Analytical_Tool_Description: Laboratory salinometer. Tool_Access_Information: Tool_Access_Instructions: Contact Guildline Instruments Tool_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Guildline Instruments Contact_Address: Address_Type: mailing address Address: 103 Commerce Street, Suite 160 City: Lake Mary State_or_Province: FL Postal_Code: 32746 Country: US Contact_Voice_Telephone: 800-232-4536 Contact_Electronic_Mail_Address: sales@guildline.com Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Nutrient and Pigment bottom water samples were collected with a 30-liter bottom tripping Niskin bottle secured in a frame with a Hydrolab Surveyor 3 CTD. The data logger for the Surveyor 3 flooded mid-way through the cruise and the only available data were from hand-recorded surface and bottom values. Depth values of bottom pigment and nutrient samples based on the Surveyor 3 pressure sensor are given when available. The range of values between the station fathometer depth and the maximum Seabird CTD pressure sensor depth may be useful for extrapolation of approximate depth values for bottom nutrient and pigment samples. S793Nutrient: Nutrient analyses were conducted by Tom Oswald under the supervision of R. E. Turner S793Pigment: The Turner Designs model 10 fluorometer was calibrated for chlorophyll a against a chemical supply house chlorophyll a standard measured on a spectrophotometer yearly (or more frequently if needed). During the cruise, the Fluorometer was blanked and calibrated daily in accordance with Turner Designs recommended procedures. Chlorophyll concentrations were supervised and quality controlled by Nancy Rabalais. S793Seabird: Temperature, dissolved oxygen, percent oxygen saturation, conductivity, salinity, density, percent light transmission, fluorescence and depth were acquired with a SeaBird 911 CTD system that was used to obtain water column profiles at all stations. Oxygen concentration determinations, upper and lower end, were made prior to the cruise by the LUMCON CTD technician and entered into the SeaSoft configuration file. Winkler oxygen titrations were conducted during the cruise. A regression equation developed from Winkler titrations gave a strong, good relationship. A correction of the SeaBird oxygen data was not necessary. Negative density sigma-t values are reported for two depths at station A'2. Data reductions from the SeaBird were generated by Ben Cole and quality controlled by Nancy Rabalais. S793Sal: Salinity determinations for surface water samples were made by on a Guildine Autosal maintained by the LSU Coastal Studies Institute shop. S793Stns: Position coordinates were logged from RV Pelican’s Loran C/GPS. Station depths were logged from the ship’s fathometer. N. Rabalais performed an additional procedure in quality-control/quality-assurance by evaluating relationships between the data in S793Nutrient, S793Pigment, S793Sal, S793Seabird and S793Stns. Logical_Consistency_Report: Unknown Completeness_Report: Unknown. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Station positions were logged from RV Pelican's NorthStar LORAN C/GPS at the beginning of sampling operations. GPS when it was available, LORAN when GPS was not available. Manufacturer's LORAN accuracy claim is 30 meters 90% of the time. Manufacturer's GPS accuracy claim is 100 meters 95% of the time. Wind, currents and tidal forces may have moved the ships from the beginning positions. Lineage: Methodology: Methodology_Type: Field Pigment Methodology_Description: Water for chlorophyll analysis (50 - 100 ml) is filtered on board ship through GF/F (0.7 micron) filters, which are then fixed in 5 ml of DMSO/90% acetone (40/60) solution, allowed to extract for at least one hour in the dark, then measured pre- and post-acidification on a Turner Model 10 fluorometer. Methodology: Methodology_Type: Field Station Locations Methodology_Description: Stations were occupied along 13 generally North-South transects across the Louisiana coastal shelf. Station depths ranged from 5 to 63 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 five 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 end of transect G was not reached. Methodology: Methodology_Type: Field Nutrient Methodology_Description: Care was taken that the collector's hands were clean and avoided touching the 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: Lab Nutrient Methodology_Description: Nitrogen and phosphorus were 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 was analyzed according to Technicon Industrial method 186-72 W/B (1977). Methodology: Methodology_Type: Lab CTD Methodology_Description: CTD data were post processed using Seasoft version 4026. 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 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: + 3.45 seconds. Data values reported are from downcasts. Downcast scans selected for each CTD station are 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-meter scans were selected. Methodology: Methodology_Type: Lab Suspended Sediment Methodology_Description: Suspended sediment filters were dried 24 hours 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: Field water samples Methodology_Description: Water for chlorophyll, nutrient analyses, and salinity were collected from the surface by bucket, from mid-water in 5-l Niskin bottles on the Seabird CTD/rosette system, and from bottom in a 30-l bottom tripping Niskin bottle secured in a frame with the Hydrolab Surveyor 3. Depth of 0.00 or ""bucket"" indicates a bucket sample collected from the surface of the water. Deepest depths of water samples were from the bottom-tripping Niskin and (when available) correspond to the deepest depth recorded from the Hydrolab (see Attribute Accuracy). Other depths indicate the p-sensor reading for 5-l Niskin bottles on the rosette. p-sensor was located approx. 1 meter below the mid-point of the 5-l Niskin. Pigment sample depth values = ""midas"" indicate samples were collected from RV Pelican’s seawater flow-through system. The seawater intake was located in the sea chest approximately 3 meters below the surface. Methodology: Methodology_Type: Field Sal Methodology_Description: Water is collected in a triple-rinsed 500ml Nalgene jar from a twice rinsed bucket of surface water. The jar lid is closed tight. The jar is stored for later analysis in the laboratory. Process_Step: Process_Description: Unknown. Process_Date: Unknown Cloud_Cover: Unknown Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 84 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: S793Seabird Entity_Type_Definition: The table lists values for SeaBird CTD station conductivity, density sigma-t, fluorometer voltage, dissolved oxygen, percent oxygen saturation, salinity, percent light transmission and temperature values at depths. There are 2312 records. Entity_Type_Definition_Source: None. Attribute: Attribute_Label: Cond Attribute_Definition: Conductivity Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.907694 Range_Domain_Maximum: 5.641359 Attribute_Units_of_Measure: S/m Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: Density Attribute_Definition: Density sigma-t Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.2025 Range_Domain_Maximum: 26.0127 Attribute_Units_of_Measure: Density sigma-t Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: Depth Attribute_Definition: Depth of SeaBird pressure sensor Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.682 Range_Domain_Maximum: 53.004 Attribute_Units_of_Measure: Meters Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: Fluor Attribute_Definition: Fluormeter voltage Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Unrepresentable_Domain: Character field, generally numeric equivalent of text value except in 15 cases where ">10.0" indicates fluorometer was maximized. Range_Domain: Range_Domain_Minimum: 0.2125 Range_Domain_Maximum: 6.415 Attribute_Units_of_Measure: volts Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: O2 Attribute_Definition: Dissolved oxygen Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.061 Range_Domain_Maximum: 9.339 Attribute_Units_of_Measure: mg/L Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: PctO2Sat Attribute_Definition: Oxygen percent saturation Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.9 Range_Domain_Maximum: 128.9 Attribute_Units_of_Measure: Percent Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: PctXmiss Attribute_Definition: Percent light transmission Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7.4 Range_Domain_Maximum: 93.2 Attribute_Units_of_Measure: Percent Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: Sal Attribute_Definition: Salinity Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4.7578 Range_Domain_Maximum: 36.6585 Attribute_Units_of_Measure: ppt Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 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: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1605 Range_Domain_Maximum: 1687 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: Temp Attribute_Definition: Temperature Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 19.2108 Range_Domain_Maximum: 33.3242 Attribute_Units_of_Measure: Degrees centigrade Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Detailed_Description: Entity_Type: Entity_Type_Label: S793Nutrient Entity_Type_Definition: The table lists values for station NH4, NO2, NO2+NO3, NO3, PO4 and SiO3 values at depths. There are 181 records. Entity_Type_Definition_Source: None. Attribute: Attribute_Label: Depth Attribute_Definition: 0 = bucket surface sample. Depth of SeaBird p sensor for mid-water samples. Depth of Hydrolab p-sensor for bottom samples. Midas = approximately 3 meters. Bot = may be extrapolated (see Attribute Accuracy). Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0 Range_Domain_Maximum: 52.6 Attribute_Units_of_Measure: Meters Unrepresentable_Domain: Character field. Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: NH4 Attribute_Definition: Ammonium Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.2 Range_Domain_Maximum: 20.4 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 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: 6.4 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: NO2+NO3 Attribute_Definition: Nitrite+Nitrate Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.1 Range_Domain_Maximum: 150 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: NO3 Attribute_Definition: Nitrate Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 149.1 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 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: 5.5 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 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: 167.7 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 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: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1604 Range_Domain_Maximum: 1687 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Detailed_Description: Entity_Type: Entity_Type_Label: S793Pigment Entity_Type_Definition: The table lists values for station mean chlorophyll a, Fo/Fa ratio, mean phaeopigment and total pigment values at depths. There are 264 records. Entity_Type_Definition_Source: None. Attribute: Attribute_Label: Depth Attribute_Definition: 0 = bucket surface sample. Depth of SeaBird p sensor for mid-water samples. Depth of Hydrolab p-sensor for bottom samples. Midas = approximately 3 meters. Bot = may be extrapolated (see Attribute Accuracy). Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Character field. Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: MeanC Attribute_Definition: Mean Chlorophyll a Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.06 Range_Domain_Maximum: 23.92 Attribute_Units_of_Measure: µg/L Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: MeanF Attribute_Definition: Mean Fo/Fa ratio Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 2.05 Attribute_Units_of_Measure: FoFa ratio Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: MeanP Attribute_Definition: Mean Phaeopigments Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 20.2 Attribute_Units_of_Measure: µg/L Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 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: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1604 Range_Domain_Maximum: 1687 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: Total Attribute_Definition: Total pigments Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.3 Range_Domain_Maximum: 31.99 Attribute_Units_of_Measure: µg/L Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Detailed_Description: Entity_Type: Entity_Type_Label: S793Stns Entity_Type_Definition: The table lists values for station, date, fathometer, latitude, longitude, Secchi disk, time of Seabird cast, time of Hydrolab cast and station ID. There are 84 records. Entity_Type_Definition_Source: None. Attribute: Attribute_Label: Date Attribute_Definition: Date station was sampled. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 19930724 Range_Domain_Maximum: 19930730 Attribute_Units_of_Measure: YYYYMMDD Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: Fath Attribute_Definition: Estimated total depth of station from ship's fathometer, with addition of constant hull depth. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5 Range_Domain_Maximum: 53 Attribute_Units_of_Measure: meters Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude of sampling station. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 28.45 Range_Domain_Maximum: 29.7065 Attribute_Units_of_Measure: Decimal degrees Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: -9999 Attribute_Value_Accuracy_Explanation: Latitude value was recorded from the ship's GPS or LORAN C if GPS was unavailable at the beginning of sampling operations. 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: -93.4167 Range_Domain_Maximum: -89.4193 Attribute_Units_of_Measure: Decimal degrees Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: -9999 Attribute_Value_Accuracy_Explanation: Longitude value was recorded from the ship's GPS or LORAN C if GPS was unavailable at the beginning of sampling operations. 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: Secchi Attribute_Definition: Secchi disk depth in meters. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Unrepresentable_Domain: Character field. Stn J6 had a value of >13 meters. Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 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: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1604 Range_Domain_Maximum: 1687 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: Time Attribute_Definition: Time of beginning of SeaBird CTD cast. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0:05 Range_Domain_Maximum: 23:51 Attribute_Units_of_Measure: HH:mm Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Detailed_Description: Entity_Type: Entity_Type_Label: S793Sal Entity_Type_Definition: The table lists values for station, depth, salinity and stationID. There are 84 records. Entity_Type_Definition_Source: None. Attribute: Attribute_Label: Depth Attribute_Definition: Depth of salinity sample. 0 = bucket sample. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute_Units_of_Measure: meters Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: Sal Attribute_Definition: Salinity. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.5843 Range_Domain_Maximum: 30.5472 Attribute_Units_of_Measure: ppt Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: Sta Attribute_Definition: Name of station sampled. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Character field. Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Attribute: Attribute_Label: StationID Attribute_Definition: Station identification number. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1604 Range_Domain_Maximum: 1687 Attribute_Units_of_Measure: Integer. Beginning_Date_of_Attribute_Values: 19930724 Ending_Date_of_Attribute_Values: 19930730 Overview_Description: Entity_and_Attribute_Overview: The related data tables S793Nutrient, S793Pigment, S793Sal, S793Seabird and S793Stns contain spatial, temporal, physical and biological water quality data acquired during the July 1993 cruise. Each table contains a StnID field that can be used to key joins with the other tables. Entity_and_Attribute_Detail_Citation: For detailed attribute information contact Nancy 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: 0.576 Digital_Transfer_Option: Offline_Option: Offline_Media: 3-1/2 inch floppy disk Recording_Format: DOS Copy Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: S793.mdb Access_Instructions: Contact Distributor. Fees: None Ordering_Instructions: Call, email or write the Distributor with requests for data sets. Standard_Order_Process: Fees: None. Custom_Order_Process: Contact distributor Metadata_Reference_Information: Metadata_Date: 20020521 Metadata_Review_Date: 20020701 Metadata_Future_Review_Date: 20120615 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Ben Cole Contact_Organization: Louisiana Universities Marine Consortium Contact_Address: Address_Type: mailing address Address: LUMCON 8124 Hwy 24 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