Louisiana Coastal Hypoxia Shelfwide Survey, July 1987

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Rabalais, N.

Publication_Date: 1989

Title: Louisiana Coastal Hypoxia Shelfwide Survey, July 1987

Geospatial_Data_Presentation_Form: Database

Description:

Abstract:

Hydrographic data were collected during a July 1 - 5, 1987 survey of the Louisiana continental shelf. Nutrient, pigment 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: 19870701

Beginning_Time: Unknown

Ending_Date: 19870705

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: 29.7

South_Bounding_Coordinate: 28.5

Data_Set_G-Polygon:

Data_Set_G-Polygon_Outer_G-Ring:

G-Ring_Point:

G-Ring_Latitude: 29.7

G-Ring_Longitude: -93.7

G-Ring_Point:

G-Ring_Latitude: 28.5

G-Ring_Longitude: -89.4

G-Ring_Point:

G-Ring_Latitude: 28.5

G-Ring_Longitude: -93.7

G-Ring_Point:

G-Ring_Latitude: 29.7

G-Ring_Longitude: -89.4

G-Ring_Point:

G-Ring_Latitude: 29.7

G-Ring_Longitude: -93.7

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 > Chlorophyll

Theme_Keyword: EARTH SCIENCE > Hydrosphere > Water Quality > Conductivity

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 > Water Temperature

Theme_Keyword: EARTH SCIENCE > Hydrosphere > Water Quality

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

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 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: 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: 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: 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: 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

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

S787Hydro: Temperature, dissolved oxygen, percent oxygen saturation, conductivity, salinity, density and depth were acquired with a SeaBird (91105/11105) CTD system that was used to obtain water column profiles at all stations. Water samples were collected to check the conductivity sensor against water of a known salinity. No correction was necessary for the conductivity measurements. 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).

S787Nutrient: Nutrient analyses were conducted by Tom Oswald under the supervision of R. E. Turner.

S787Pigment: 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. 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 S787Hydro, S787Nutrient, S787Pigment and S787Stns.

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 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.

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 63 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. Optimally, one or two stations South of the Southern most station with bottom dissolved oxygen less than 2 (mg/L). Due to constraints of time and funding it was not possible to sample the southern limits of low oxygen for all transects or to reach the western limit of the hypoxic water mass.

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: Field SeaBird

Methodology_Description: A SeaBird 911 CTD was used to collect hydrographic data.

Methodology:

Methodology_Type: Field Niskin

Methodology_Description:

The CTD unit was mounted on a rosette sampler fitted with eleven 5-liter Niskin bottles for recovering water samples at discrete depths and a horizontally mounted Niskin bottle that triggered upon contact with the bottom. Selected samples for dissolved oxygen analysis were collected from surface and bottom waters.

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 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).

Methodology:

Methodology_Type: Lab Pigment

Methodology_Description:

Analysis for chlorophyll and phaeopigment concentrations followed the fluorometric methods outlined in Strickland and Parsons (1972). Known volume of seawater was filtered onto a GF/F (0.7 micron) filter. Filter was fixed in 90% acetone, stored in the dark for one hour and ground with a Teflon mortar. Filtrant was read on a Turner Designs model 10 fluorometer before and after acidification with 10% Hcl.

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: 60

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: S787Hydro

Entity_Type_Definition:

The table lists SeaBird CTD station conductivity, density, dissolved oxygen, percent oxygen saturation, salinity, and temperature values at depths. There are 831 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: 29.73

Range_Domain_Maximum: 56.62

Attribute_Units_of_Measure: mmho/cm

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

Attribute:

Attribute_Label: Density

Attribute_Definition: Density sigma-t

Attribute_Definition_Source: Producer defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 8.85

Range_Domain_Maximum: 25.92

Attribute_Units_of_Measure: Density sigma-t

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

Attribute:

Attribute_Label: Depth

Attribute_Definition: Depth of SeaBird pressure sensor

Attribute_Definition_Source: Producer Defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.4

Range_Domain_Maximum: 63.1

Attribute_Units_of_Measure: Meters

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

Attribute:

Attribute_Label: O2

Attribute_Definition: Dissolved oxygen

Attribute_Definition_Source: Producer defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.28

Range_Domain_Maximum: 13.51

Attribute_Units_of_Measure: mg/L

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

Attribute:

Attribute_Label: O2PctSat

Attribute_Definition: Oxygen percent saturation

Attribute_Definition_Source: Producer defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 4.2

Range_Domain_Maximum: 205.2

Attribute_Units_of_Measure: Percent

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

Attribute:

Attribute_Label: Sal

Attribute_Definition: Salinity

Attribute_Definition_Source: Producer defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 17.09

Range_Domain_Maximum: 36.42

Attribute_Units_of_Measure: ppt

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

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: 19870701

Ending_Date_of_Attribute_Values: 19870705

Attribute:

Attribute_Label: StnID

Attribute_Definition: Station identification number

Attribute_Definition_Source: Producer defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 592

Range_Domain_Maximum: 654

Attribute_Units_of_Measure: Integer

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

Attribute:

Attribute_Label: Temp

Attribute_Definition: Temperature

Attribute_Definition_Source: Producer defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 19.34

Range_Domain_Maximum: 30.87

Attribute_Units_of_Measure: Degrees centigrade

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

Detailed_Description:

Entity_Type:

Entity_Type_Label: S787Nutrient

Entity_Type_Definition:

The table lists station NH4, NO2, NO3, PO4 and SiO3 values at depths. There are 119 records.

Entity_Type_Definition_Source: None.

Attribute:

Attribute_Label: Depth

Attribute_Definition: Depth of SeaBird p sensor, 0.4 depth = Niskin surface sample.

Attribute_Definition_Source: Producer defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.4

Range_Domain_Maximum: 63.1

Attribute_Units_of_Measure: Meters

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

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: 12.5

Attribute_Units_of_Measure: µg-at/L

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

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: 9.8

Attribute_Units_of_Measure: µg-at/L

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

Attribute:

Attribute_Label: NO3

Attribute_Definition: Nitrate

Attribute_Definition_Source: Producer defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 34.5

Attribute_Units_of_Measure: µg-at/L

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

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: 2.7

Attribute_Units_of_Measure: µg-at/L

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

Attribute:

Attribute_Label: SiO3

Attribute_Definition: Silicate

Attribute_Definition_Source: Producer defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.1

Range_Domain_Maximum: 4.5

Attribute_Units_of_Measure: µg-at/L

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

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: 19870701

Ending_Date_of_Attribute_Values: 19870705

Attribute:

Attribute_Label: StnID

Attribute_Definition: Station identification number

Attribute_Definition_Source: Producer defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 592

Range_Domain_Maximum: 645

Attribute_Units_of_Measure: Integer

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

Detailed_Description:

Entity_Type:

Entity_Type_Label: S787Pigment

Entity_Type_Definition:

The table lists station mean chlorophyll a, Fo/Fa ratio, and mean phaeopigment values at depths. There are 119 records.

Entity_Type_Definition_Source: None.

Attribute:

Attribute_Label: Depth

Attribute_Definition: Depth of SeaBird p sensor, 0.4 depth = Surface Niskin sample

Attribute_Definition_Source: Producer defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.4

Range_Domain_Maximum: 63.1

Attribute_Units_of_Measure: Meters

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

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: 40.2

Attribute_Units_of_Measure: µg/L

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

Attribute:

Attribute_Label: MeanF

Attribute_Definition: Mean Fo/Fa ratio

Attribute_Definition_Source: Producer defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.2

Range_Domain_Maximum: 9.7

Attribute_Units_of_Measure: FoFa ratio

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

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: 37.5

Attribute_Units_of_Measure: µg/L

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

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: 19870701

Ending_Date_of_Attribute_Values: 19870705

Attribute:

Attribute_Label: StnID

Attribute_Definition: Station identification number

Attribute_Definition_Source: Producer defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 592

Range_Domain_Maximum: 654

Attribute_Units_of_Measure: Integer

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

Detailed_Description:

Entity_Type:

Entity_Type_Label: S787Stns

Entity_Type_Definition:

The table lists station, date, latitude, longitude, Secchi disk, time of SeaBird cast and station ID. There are 60 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: 19870701

Range_Domain_Maximum: 19870705

Attribute_Units_of_Measure: YYYYMMDD

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

Attribute:

Attribute_Label: Latitude

Attribute_Definition: Latitude of sampling station.

Attribute_Definition_Source: Producer defined.

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 28.5833

Range_Domain_Maximum: 29.6417

Attribute_Units_of_Measure: Decimal degrees

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

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: -93.6283

Range_Domain_Maximum: -89.475

Attribute_Units_of_Measure: Decimal degrees

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

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: 0.8

Range_Domain_Maximum: 10.5

Attribute_Units_of_Measure: meters

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

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: 19870701

Ending_Date_of_Attribute_Values: 19870705

Attribute:

Attribute_Label: StnID

Attribute_Definition: Station identification number.

Attribute_Definition_Source: Producer defined.

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 592

Range_Domain_Maximum: 654

Attribute_Units_of_Measure: Integer

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

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: 0:10

Range_Domain_Maximum: 23:03

Attribute_Units_of_Measure: HH:mm

Beginning_Date_of_Attribute_Values: 19870701

Ending_Date_of_Attribute_Values: 19870705

Overview_Description:

Entity_and_Attribute_Overview:

The related data tables S787Hydro, S787Nutrient, S787Pigment, and S787Stns contain spatial, temporal, physical and biological water quality data acquired during the July 1987 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: 0.36

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: S787.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: 20020429

Metadata_Review_Date: 20020627

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