CTD cast data
Table of Contents
IDENTIFICATION_INFORMATION
Citation:
Citation_Information:
Originator: Gilbert Rowe
Originator: Mahlon C. Kennicutt
Originator: Bob J. Presley
Originator: Gary A. Wolff
Originator: Joan Bernhard
Originator: John Morse
Originator: Paul Montagna
Originator: Worth Nowlin
Originator: William Bryant
Originator: Terry L. Wade
Publication_Date: 20040401
Title: CTD cast data
Edition: 1.1
Geospatial_Data_Presentation_Form: Map
Publication_Information:
Publication_Place: GERG/TAMU, College Station, Texas
Publisher: Geochemical Environmental Research Group
Other_Citation_Details:
Online_Linkage: www.gerg.tamu.edu
Larger_Work_Citation:
Citation_Information:
Originator: U.S. Department of the Interior, Minerals Management
Service, Gulf of Mexico OCS"
Publication_Date: 20030501
Title: Deepwater Program Slope Habitats and Benthic Ecology
Publication_Information:
Publication_Place: New Orleans, Louisiana
Publisher: U.S. Department of the Interior - MineralsManagement
Online_Linkage:
Description:
Abstract:
A research program has been initiated by the Minerals
Management Service (Contract No. 1435-01-99-CT-30991) to
gain better knowledge of the benthic communities of the
deep Gulf of Mexico entitled “The Deepwater Program:
Northern Gulf of Mexico Continental Slope Habitat and
Benthic Ecology.” Increasing
exploration and exploitation of fossil hydrocarbon
resources in the deep-sea prompted the Minerals Management
Service of the U.S. Department of the Interior to support
an investigation of the structure and function of the
assemblages of organisms that live in association with the
sea floor in the deep-sea. The program, Deep Gulf of Mexico
Benthos or DGoMB, is studying the northern Gulf of Mexico
(GOM) continental slope from water depths of 300 meters on
the upper continental slope out to greater than 3,000
meters water depth seaward of the base of the Sigsbee and
Florida Escarpments. The study is focused on areas that are
the most likely targets of future resource exploration and
exploitation. However, to develop a Gulf-wide perspective
of deep-sea communities, sampling in areas beyond those
thought to be potential areas for exploration has been
included in the study design. A major enhancement in the
program is the extension of the transects onto the abyssal
plain of the central Gulf of Mexico through collaborative
studies with Mexican scientists. This additional work
effort will allow assessment of benthic communities
structure and function throughout the basin by sampling the
deepest habitats in the region.
The program is designed to gain a better ability to
predict variations in the structure and function of animal
assemblages in relation to water depth, geographic
location, time and overlying water mass. Biological studies
are integrated with measurements of physical and chemical
hydrographic parameters, sediment geochemical properties
and geological characteristics that are known to influence
benthic community distributions and dynamics. Eight (8)
hypotheses are being tested on the basis of measures of
benthic community structure. It is hypothesized that
community structure varies as a function of:
1) water depth, 2)
geographic location (east vs. west),
3) association with canyons, 4)
association with mid-slope basins, 5)
sea surface primary productivity, 6)
proximity to hydrocarbon seeps, 7)
time (seasonal and interannual scales), and 8)
association with the base of escarpments.
Purpose:
The purpose of the "Survey" in DGoMB was to characterize
the principal components of benthic communities over the
entire northern Gulf of Mexico (GoM) from the continental
shelf break out to the southern boundary of the Exclusive
Economic Zone (EEZ) at 26o N. Latitude. This
characterization was intended to assess the abundances and
biomasses of each of the important size classes of the
communities (bacteria, meiofauna, macrofauna, megafauna and
demersal fishes). Species composition is to be determined
for the macrofauna, megafauna and fishes. The diversity and
zoogeographic distribution patterns for each of these size
groups will be determined for assessments of variations
within the GoM and comparisons of the deep GoM with other
continental margins. The variations in biomass within the
groups and in space will be used to construct steady state
budgets of carbon flux within the study area.
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Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GERG
Contact_Person: Dr.GaryWolff
Contact_Position: Research SCIENTIST
Contact_Address:
Address_Type: mailing and physical address
Address: 833 Graham Rd
City: College Station
State_or_Province: TEXAS
Postal_Code: 77845
Country: U.S.
Contact_Voice_Telephone: 979/862-2323
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: gary@gerg.tamu.edu
Hours_of_Service: 8-5
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r:\dgomb\metadata\dgomb_ctd1.shp
Top
DATA_QUALITY_INFORMATION
Attribute_Accuracy:
Attribute_Accuracy_Report:
All attributes created during the creation process were
verified by displaying the lines in both the database and
the spatial coverage, but no formal tests were performed.
Logical_Consistency_Report:
These data are believed to be logically consistent, though
no tests were performed.
Completeness_Report:
These data are believed to be complete, though no tests
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Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The positions were established with differential GPS.
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Source_Information:
Source_Citation:
Citation_Information:
Originator: Gilbert Rowe
Originator: Mahlon C. Kennicutt
Originator: Bob J. Presley
Originator: Gary A. Wolff
Originator: Joan Bernhard
Originator: John Morse
Originator: Paul Montagna
Originator: Worth Nowlin
Originator: William Bryant
Originator: Terry L. Wade
Publication_Date: 20040401
Title: Trace Metal
Edition: 1.1
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: GERG/TAMU, College Station, Texas
Publisher: Geochemical Environmental Research Group
Other_Citation_Details:
Online_Linkage: www.gerg.tamu.edu
Larger_Work_Citation:
Citation_Information:
Originator: U.S. Department of the Interior, Minerals Management
Service, Gulf of Mexico OCS"
Publication_Date: 20030501
Title: Deepwater Program: Northern Gulf of Mexico Continental
Slope Habitats and Benthic Ecology
Publication_Information:
Publication_Place: New Orleans, Louisiana
Publisher: U.S. Department of the Interior - MineralsManagement
Online_Linkage:
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Source_Contribution:
CTD data measured from the Gulf of Mexico
Source_Information:
Source_Citation:
Citation_Information:
Originator: Gilbert Rowe
Originator: Mahlon C. Kennicutt
Originator: Bob J. Presley
Originator: Gary A. Wolff
Originator: Joan Bernhard
Originator: John Morse
Originator: Paul Montagna
Originator: Worth Nowlin
Originator: William Bryant
Originator: Terry L. Wade
Publication_Date: 20040401
Title: CTD cast data
Edition: 1.1
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: GERG/TAMU, College Station, Texas
Publisher: Geochemical Environmental Research Group
Other_Citation_Details:
Online_Linkage: www.gerg.tamu.edu
Larger_Work_Citation:
Citation_Information:
Originator: U.S. Department of the Interior, Minerals Management
Service, Gulf of Mexico OCS"
Publication_Date: 20030501
Title: Deepwater Program Slope Habitats and Benthic Ecology
Publication_Information:
Publication_Place: New Orleans, Louisiana
Publisher: U.S. Department of the Interior - MineralsManagement
Online_Linkage:
Source_Scale_Denominator:
Type_of_Source_Media:
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date:
Ending_Date:
Source_Currentness_Reference:
Source_Citation_Abbreviation:
Source_Contribution:
CTD data measured from the Gulf of Mexico
Process_Step:
Process_Description:
Immediately after each field effort was completed, copies
of the field collection forms were forwarded to Data
Management. Based on the copies of the field collection
forms, the status of the samples collected during the
particular field effort were updated by logging the
appropriate information into the sample/data tracking
system. Before a data file is incorporated as valid data
into the program database, it is subjected to a data
screening analysis--a quality control procedure designed to
minimize errors. Original data sheets or laboratory reports
were compared to verification listings, reviewing the
latter for accuracy and completeness. This screening
analysis includes range checking and thematic scanning of
data to detect potential outliers and calculation of a
statistical summary, which includes minimum, maximum, and
mean values; numbers of valid observations, and total
number of observations in the data file. This information
and tabular listings of the data file are sent to the
appropriate Principal Investigator for inspection. The
Principal Investigator reviews the printouts and statistics
for errors. Any errors in the data file are corrected, and
new printouts are generated and sent to the Principal
Investigator. After the Principal Investigator certifies in
writing that the data file is valid, the data file is
incorporated into the program database.
Source_Used_Citation_Abbreviation:
Process_Date:
Source_Produced_Citation_Abbreviation:
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Organization: GERG
Contact_Person: Dr.GaryWolff
Contact_Position: Research SCIENTIST
Contact_Address:
Address_Type: mailing and physical address
Address: 833 Graham Rd
City: College Station
State_or_Province: TEXAS
Postal_Code: 77845
Country: U.S.
Contact_Voice_Telephone: 979/862-2323
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: gary@gerg.tamu.edu
Hours_of_Service: 8-5
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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: 35595
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SPATIAL_REFERENCE_INFORMATION
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution:
Longitude_Resolution:
Geographic_Coordinate_Units: Decimal Degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis:
Denominator_of_Flattening_Ratio:
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ENTITY_AND_ATTRIBUTE_INFORMATION
Detailed_Description:
Entity_Type:
Entity_Type_Label: dgomb_ctd1.dbf
Entity_Type_Definition: Shapefile Attribute Table
Entity_Type_Definition_Source: None
Attribute:
Attribute_Label: Cruise
Attribute_Definition:
Attribute_Definition_Source:
Attribute_Domain_Values:
Unrepresentable_Domain: Character Field
Attribute:
Attribute_Label: Station
Attribute_Definition:
Attribute_Definition_Source:
Attribute_Domain_Values:
Unrepresentable_Domain: Character Field
Attribute:
Attribute_Label: Latitude
Attribute_Definition:
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 25.9988
Range_Domain_Maximum: 29.3301
Attribute:
Attribute_Label: Longitude
Attribute_Definition:
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -96.0005
Range_Domain_Maximum: -85.748
Attribute:
Attribute_Label: Cast_depth
Attribute_Definition: cast depth in meters
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 212
Range_Domain_Maximum: 3128
Attribute:
Attribute_Label: Water_dept
Attribute_Definition: meters
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 214
Range_Domain_Maximum: 3138
Attribute:
Attribute_Label: Pres_db_
Attribute_Definition: PRESSURE(DB)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2.013
Range_Domain_Maximum: 3172.15
Attribute:
Attribute_Label: Depth_m_
Attribute_Definition: DEPTH(M)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2
Range_Domain_Maximum: 3128
Attribute:
Attribute_Label: Temp_c_
Attribute_Definition: temp centigrade
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4.2092
Range_Domain_Maximum: 30.2755
Attribute:
Attribute_Label: Pottemp_c_
Attribute_Definition: POTENTIAL_TEMPERATURE(C)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4.0395
Range_Domain_Maximum: 30.275
Attribute:
Attribute_Label: Cond_s_m_
Attribute_Definition: CONDUCTIVITY(S/M)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 3.3364
Range_Domain_Maximum: 6.068
Attribute:
Attribute_Label: Salinity
Attribute_Definition:
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 33.8205
Range_Domain_Maximum: 36.8717
Attribute:
Attribute_Label: Sigmat_kg_
Attribute_Definition: SIGMA_THETA(kg/M^3)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 21.6193
Range_Domain_Maximum: 27.7652
Attribute:
Attribute_Label: Do_ml_l_
Attribute_Definition: DISSOLVED_OXYGEN(ml/l)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -9.9
Range_Domain_Maximum: 5.56
Attribute:
Attribute_Label: Trans__
Attribute_Definition: PERCENT_TRANSMISSION
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -99
Range_Domain_Maximum: 89.02
Attribute:
Attribute_Label: Trans_volt
Attribute_Definition: TRANSMISSOMETER(Volts)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -9
Range_Domain_Maximum: 4.451
Attribute:
Attribute_Label: Irr_par__m
Attribute_Definition: IRRADIANCE(PAR)(microEinsteins/M^2/sec)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -9
Range_Domain_Maximum: 2050
Attribute:
Attribute_Label: Rel_flu_vo
Attribute_Definition: RELATIVE_FLUORESCENSE(Volts)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -9
Range_Domain_Maximum: 1.961
Attribute:
Attribute_Label: Rel_back_m
Attribute_Definition: RELATIVE_BACKSCATTERANCE(mg/l)
Attribute_Definition_Source:
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -9
Range_Domain_Maximum: 11.328
Overview_Description:
Entity_and_Attribute_Overview:
Entity_and_Attribute_Detail_Citation:
MMS Deepwater Program: Northern Gulf of Mexico Continental
Shelf Slope Habitat and Bentic Ecology
CTD Data
Bad values flagged with -9 or -99.
GYRE_ID,DGOMB_CRUISE,DGOMB_STATION,DATE_TIME,LATITUDE,LONGITUDE,CAST_DEPTH,WATER_DEPTH,PRESSURE(DB),DEPTH(M),TEMP(C),POTENTIAL_TEMPERATURE(C),CONDUCTIVITY(S/M),SALINITY,SIGMA_THETA(kg/M^3),DISSOLVED_OXYGEN(ml/l),PERCENT_TRANSMISSION,TRANSMISSOMETER(Volts),IRRADIANCE(PAR)(microEinsteins/M^2/sec),RELATIVE_FLUORESCENSE(Volts),RELATIVE_BACKSCATTERANCE(mg/l)
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DISTRIBUTION_INFORMATION
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GERG
Contact_Person: Dr.GaryWolff
Contact_Position: Research SCIENTIST
Contact_Address:
Address_Type: mailing and physical address
Address: 833 Graham Rd
City: College Station
State_or_Province: TEXAS
Postal_Code: 77845
Country: U.S.
Contact_Voice_Telephone: 979/862-2323
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: gary@gerg.tamu.edu
Hours_of_Service: 8-5
Resource_Description:
This section was compiled as
part of the Deep Gulf of Mexico Benthic Ecology Study
Distribution_Liability:
Users must assume responsibility to determine the
appropriate use of these data.
Custom_Order_Process:
Contact GERG DGoMB specialist for a printed copy of the map
or for an ESRI coverage .
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METADATA_REFERENCE_INFORMATION
Metadata_Date: 2004210
Metadata_Review_Date:
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GERG
Contact_Person: Dr.GaryWolff
Contact_Position: Research SCIENTIST
Contact_Address:
Address_Type: Mailing and physical address
Address: 833 Graham Rd
City: College Station
State_or_Province: TEXAS
Postal_Code: 77845
Country: U.S.
Contact_Voice_Telephone: 979/862-2323
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: gary@gerg.tamu.edu
Hours_of_Service: 8-5
Metadata_Standard_Name: FGDC CSDGM
Metadata_Standard_Version: FGDC-STD-001-1998
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