Identification_Information: Citation: Citation_Information: Originator: Rabalais, N. Publication_Date: 1989 Title: Louisiana Coastal Hypoxia Shelfwide Survey, August 1988 Geospatial_Data_Presentation_Form: Database Description: Abstract: Hydrographic data were collected during a August 12 -16, 1988 survey of the Louisiana continental shelf. Nutrient, pigment and station information data were also acquired. Drought conditions in the upper Mississippi River basin during the spring and summer of 1988 resulted in a significant reduction in the flow of the Mississippi River and an opportunity to document hydrographic conditions under low flow conditions and observe the effects of low flow on hypoxia. 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: 19880812 Beginning_Time: Unknown Ending_Date: 19880816 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: -92.39 East_Bounding_Coordinate: -89.42 North_Bounding_Coordinate: 29.31 South_Bounding_Coordinate: 28.6 Data_Set_G-Polygon: Data_Set_G-Polygon_Outer_G-Ring: G-Ring_Point: G-Ring_Latitude: 29.31 G-Ring_Longitude: -92.39 G-Ring_Point: G-Ring_Latitude: 28.6 G-Ring_Longitude: -89.42 G-Ring_Point: G-Ring_Latitude: 28.6 G-Ring_Longitude: -92.39 G-Ring_Point: G-Ring_Latitude: 29.31 G-Ring_Longitude: -89.42 G-Ring_Point: G-Ring_Latitude: 29.31 G-Ring_Longitude: -92.39 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 > 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 > 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 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., Wiseman Jr, W.J. and Boesch, D.F. Funding: Funds for the research were provided by the National Oceanographic and Atmospheric Administration, Ocean Assessments Division, through the Louisiana Sea Grant Program, the Louisiana Board of Regents Education Quality Support Fund and by the Louisiana Universities Marine Consortium. 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: Fluorometer Tool_Access_Information: Tool_Access_Instructions: Contact Turner Designs. Tool_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Turner Designs Inc. Contact_Address: Address_Type: mailing address Address: 845 W. Maude Avenue City: Sunnyvale State_or_Province: CA Postal_Code: 94085 Country: US Contact_Voice_Telephone: 877 316-8049 Analytical_Tool: Analytical_Tool_Description: CTD Tool_Access_Information: Tool_Access_Instructions: Contact Hydrolab Corporation. Tool_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Hydrolab Corporation Contact_Address: Address_Type: mailing address Address: 8700 Cameron Road City: Austin State_or_Province: TX Postal_Code: 78754 Country: US Contact_Voice_Telephone: 800-949-3766 Contact_Electronic_Mail_Address: techsupport@hydrolab.com Analytical_Tool: Analytical_Tool_Description: A navigation device that uses a radio navigation system operated by the U.S. Coast Guard. Tool_Access_Information: Tool_Access_Instructions: Contact Northstar Technologies Inc. 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 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: S888Hydro: Temperature, pH, dissolved oxygen, conductivity, salinity, and depth were measured with a Hydrolab Surveyor II Water Quality Data System at 1-, 2-, or 3-m intervals through the water column. Readings from a digital display unit were recorded on board ship. Conductivity in 25°C equivalents was converted to in situ conductivity and in situ salinity. Water samples were collected to check the conductivity sensor against water of a known salinity. A correction factor was applied as necessary for in situ salinity calculations. Selected samples for dissolved oxygen analysis were collected from surface and bottom waters and analyzed according to a modified Winkler procedure (Strickland and Parsons, 1972). Operation, maintenance, and calibration of the Hydrolab Surveyor II followed instructions provided by the Hydrolab manual (Hydrolab Corp., 1984). Yearly maintenance of the Surveyor II was performed by Hydrolab Corporation. S888Nutrient: Nutrient analyses were conducted by Tom Oswald under the supervision of R. E. Turner. S888Pigment: 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 analyses followed a modified fluorometric technique as described in Strickland and Parsons (1972). Pigment measurements were supervised and quality controlled by Nancy Rabalais. N. Rabalais performed an additional procedure in quality-control/quality-assurance by evaluating relationships between the data in S888Hydro, S888Nutrient, S888Pigment and S888Stns. Logical_Consistency_Report: Unknown. Completeness_Report: Unknown. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Station positions were logged from RV Acadiana's NorthStar LORAN C at the beginning of sampling operations. Manufacturer's accuracy claim is 30 meters 90% 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 analyses was collected from surface and bottom waters in 5 liter Niskin bottles. Water samples were filtered immediately following collection onto GF/F (0.7micron) filters. The filters where immersed in 5ml of DMSO/90%Acetone (40:60) solution, allowed to extract for at least one hour in the dark, then measured pre and post-acidification. Methodology: Methodology_Type: Field Station Locations Methodology_Description: Stations were occupied along ten generally North-South transects across the Louisiana coastal shelf and into Texas waters. Station depths ranged from 5 to 55 meters. The objective was to delimit and describe the area of midsummer bottom dissolved oxygen less than 2(mg/L). Biological, chemical and physical properties of the water are measured. Northern end stations of transects were chosen based on the survey vessel's minimum depth limits for each longitude. 1988 was a low flow year (see abstract). Transect Southern end-member station locations were based on 1985 - 1987 midsummer hypoxia survey historical station locations. Methodology: Methodology_Type: Field Nutrient Methodology_Description: Water for nutrient analyses was collected from surface and bottom waters in 5-liter Niskin bottles. Care was taken that the collector's hands were clean and avoided touching the water. 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: Samples for nutrients were frozen on board ship for later analysis in the laboratory. Nitrogen and phosphorus were analyzed according to methods described in EPA publication EPA 600/4-79-020 (1979), method 350.1 was used for ammonia-N, method was used for 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). 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: 43 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: S888Hydro Entity_Type_Definition: The table lists Hydrolab CTD station dissolved oxygen, temperature, specific conductance, salinity, pH, percent oxygen saturation and density values at depths. There are 423 records. Entity_Type_Definition_Source: None. Attribute: Attribute_Label: Depth Attribute_Definition: Depth of HydroLab pressure sensor Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.3 Range_Domain_Maximum: 54.2 Attribute_Units_of_Measure: Meters Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: O2 Attribute_Definition: Dissolved oxygen Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.7 Range_Domain_Maximum: 11.13 Attribute_Units_of_Measure: mg/L Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: PctO2Sat Attribute_Definition: Oxygen percent saturation Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 25.6 Range_Domain_Maximum: 173 Attribute_Units_of_Measure: Percent Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: pH Attribute_Definition: pH Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7.4 Range_Domain_Maximum: 8.2 Attribute_Units_of_Measure: pH units Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: Sal Attribute_Definition: Salinity Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 8.69 Range_Domain_Maximum: 36.25 Attribute_Units_of_Measure: ppt Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: Sigma-t Attribute_Definition: Density sigma-t Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.54 Range_Domain_Maximum: 25.73 Attribute_Units_of_Measure: Density sigma-t Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: spCond Attribute_Definition: Conductivity Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 15.13 Range_Domain_Maximum: 55.13 Attribute_Units_of_Measure: mmho/cm Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 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: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 685 Range_Domain_Maximum: 727 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: Temp Attribute_Definition: Temperature Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 20.01 Range_Domain_Maximum: 30.8 Attribute_Units_of_Measure: Degrees centigrade Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Detailed_Description: Entity_Type: Entity_Type_Label: S888Nutrient Entity_Type_Definition: The table lists station NH4, NO2, NO3, PO4 and SiO3 values at depths. There are 83records. Entity_Type_Definition_Source: None. Attribute: Attribute_Label: Depth Attribute_Definition: Depth of HydroLab p sensor Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.3 Range_Domain_Maximum: 54.2 Attribute_Units_of_Measure: Meters Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 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: 24.6 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 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: 4.7 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: NO3 Attribute_Definition: Nitrate Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 58.1 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 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: 2.2 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: SiO3 Attribute_Definition: Silicate Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 30.7 Attribute_Units_of_Measure: µg-at/L Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 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: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 685 Range_Domain_Maximum: 727 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Detailed_Description: Entity_Type: Entity_Type_Label: S888Pigment Entity_Type_Definition: The table lists station mean chlorophyll a, Fo/Fa ratio, and mean phaeopigment values at depths. There are 83 records. Entity_Type_Definition_Source: None. Attribute: Attribute_Label: Depth Attribute_Definition: Depth of HydroLab p sensor Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.3 Range_Domain_Maximum: 54.2 Attribute_Units_of_Measure: Meters Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: MeanC Attribute_Definition: Mean Chlorophyll a Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.2 Range_Domain_Maximum: 45.7 Attribute_Units_of_Measure: µg/L Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: MeanF Attribute_Definition: Mean Fo/Fa ratio Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.3 Range_Domain_Maximum: 16.8 Attribute_Units_of_Measure: FoFa ratio Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 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: 6.4 Attribute_Units_of_Measure: µg/L Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 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: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 685 Range_Domain_Maximum: 727 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Detailed_Description: Entity_Type: Entity_Type_Label: S888Stns Entity_Type_Definition: The table lists station, date, latitude, longitude, Secchi disk, time of HydroLab cast and station ID. There are 43 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: 19880812 Range_Domain_Maximum: 19880816 Attribute_Units_of_Measure: YYYYMMDD Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude of sampling station. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 28.6083 Range_Domain_Maximum: 29.3083 Attribute_Units_of_Measure: Decimal degrees Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: -9999 Attribute_Value_Accuracy_Explanation: Latitude value was recorded from the ship's LORAN C at the beginning of sampling operations. Manufacturer's accuracy claim is 30 meters 90% 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: -92.3833 Range_Domain_Maximum: -89.4267 Attribute_Units_of_Measure: Decimal degrees Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: -9999 Attribute_Value_Accuracy_Explanation: Latitude value was recorded from the ship's LORAN C at the beginning of sampling operations. Manufacturer's accuracy claim is 30 meters 90% 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: Secchi Attribute_Definition: Secchi disk depth. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.3 Range_Domain_Maximum: 18.5 Attribute_Units_of_Measure: meters Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 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: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: StnID Attribute_Definition: Station identification number. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 685 Range_Domain_Maximum: 727 Attribute_Units_of_Measure: Integer Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Attribute: Attribute_Label: Time Attribute_Definition: Time of beginning of HydroLab CTD cast. Attribute_Definition_Source: Producer defined. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7:00:00 Range_Domain_Maximum: 23:10:00 Attribute_Units_of_Measure: HH:mm Beginning_Date_of_Attribute_Values: 19880812 Ending_Date_of_Attribute_Values: 19880816 Overview_Description: Entity_and_Attribute_Overview: The related data tables S888Hydro, S888Nutrient, S888Pigment, and S888Stns contain spatial, temporal, physical and biological water quality data acquired during the August 1988 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: 0.26 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: S888.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: 20020513 Metadata_Review_Date: 20020628 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