Grain Size Data from the Brine Disposal Program, Gulf of Mexico
Dataset Identification:
Resource Abstract:
These data are part of the Brine Disposal Program funded by NOAA in the US Gulf of Mexico, compiled by NOAA/CEAS and partially
conducted by R. W. Hann of Texas A and M University. Grain size analyses conducted on 230 grabs by Texas A and M University
were added to the historic NGDC Seafloor Sediment Grain Size Database from multiple cruises of the Lady Gloria conducted during
October of 1982. Data include collecting institution, ship, cruise, sample id, latitude/longitude, date of collection, water
depth, sampling device, method of analysis, sample weight, sampled interval, raw weight percentages of sediment, within a
given phi range. Some samples also have percentages of total gravel, sand, silt, clay, and statistical measurements such as
mean, median, skewness, kurtosis, and standard deviation of grain size. Additional data submitted for the Brine Disposal Program
by Science Applications, Inc. (SAI) and collected during multiple cruises of the Texas Star in September of 1977, the Dixie
Isle in March of 198, and the Gus III from October 1978-May of 1979 were not added to the database due to errors.
Citation
Title Grain Size Data from the Brine Disposal Program, Gulf of Mexico
publication Date
1983-12-31
revision Date
1983-12-31
Edition First
presentationForm
tableDigital
Series
Name Marine Geology and Geophysics (MGG)
Issue MGG23085001
cited responsible party
-
originator
individual Name R. W. Hann
organisation Name
Texas A and M University (TAMU)
cited responsible party
-
publisher
organisation Name
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Description The Library of Congress Subject Headings (LCSH) are part of a Linked Data Service, actively maintained since 1898 to catalog
materials held at the Library of Congress.
Description The SeaDataNet Vocabulary Server is populated with lists describing a wide range of entities relevant to marine metadata and
data such as parameters, sea area names, platform classes, instrument types, and so on.
Description The USGS Thesaurus contains thematic terms for categorizing information resources intended to support finding and understanding
scientific information.
target application profile
web browser
Theme keywords (theme):
EARTH SCIENCE > Oceans > Marine Sediments
EARTH SCIENCE > Paleoclimate > Ocean/Lake Records > Sediments
other Citation Details
Cinergi keyword enhanced.File generated at Fri Dec 14 21:17:42 UTC 2018
purpose:
environmental research
Browse image (thumbnail):
thumbnail file name:
file type: GIF
thumbnail file description:
sample locations in study area
Resource language:
eng; USA
Character set encoding of resource:
UTF8
Resource progress code:
completed
Resource Maintenance Information
maintenance or update frequency:
notPlanned
notes: Completed data set, no additions planned.
Constraints on resource usage:
Constraints
Use limitation statement:
Please cite the originator of the data set, the date downloaded, and the National Centers for Environmental Information, NOAA,
as the source of the data.
Constraints on resource usage:
Constraints
Use limitation statement:
Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United
States.
Constraints on resource usage:
Legal Constraints
use constraint:
otherRestrictions
Other constraints
While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state
of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of
the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact
of distribution constitute such a warranty.
Constraints on resource usage:
Security Constraints
Classification
unclassified
Constraints on resource usage:
Legal Constraints
Access Constraints
otherRestrictions
Other constraints
Access to this dataset is unrestricted.
Spatial representation type code:
vector
Processing environment:
Native Dataset Environment: ASCII text
Spatial resolution:
Resource extent
Extent description
Gulf of Mexico
Geographic Extent
Geographic Bounding Box
westBoundLongitude
-93.509
eastBoundLongitude
-93.311
northBoundLatitude
30.58
southBoundLatitude
29.66
Temporal Extent
Sampling Dates
1982-10-02
1982-10-16
Vertical Extent
bottom -10
top -0
Additional information on resource:
Only data from MGG23085001 are in the NGDC Seafloor Sediment Grain Size Database. Data sets MGG03115001, MGG03495001, MGG03505001,
and MGG03515001 contained extensive errors and were not added to the database.
Credits:
Dr. R.W. Hann, Texas A and M University, funded by NOAA/CEAS through the Brine Disposal Program.
point of contact
-
pointOfContact
individual Name Marine Geology Data Manager
organisation Name
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
position Name Marine Geology Data Manager
Contact information
Telephone
Voice (303) 497-4603
Fax (303) 497-6513
Address
325 Broadway, Mail Code E/NE42, Boulder, CO, 80305-3328
Country USA
Cell value attribute description:
The Latitude and Longitude (point) from which a sample of sediment or rock was collected from the sea floor or a lakebed.
Band
descriptor Distance measured north or south from the equator. Distance north is positive, distance south is negative.
sequence Identifier
name Latitude
Long Wavelength
90.00000
Short Wavelength
-90.00000
units
Band
descriptor Longitude is measured from the Prime Meridian (which is the north/south line that runs through Greenwich, England), values
measured east are positive and values measured west are negative.
Cell value attribute description:
Information about the location from which a sample of sediment or rock was collected from the sea floor or a lakebed.
Band
descriptor The depth from the surface of the water to the sea floor or lakebed at the location where a measurement was taken or sample
collection was begun.
Cell value attribute description:
Weight percent of particles within a specified size range.
Band
descriptor Percentage, by weight, of the particles from a sample or subsample that falls within a specified particle size range. The
range may be expressed in milimeters or phi as inidcated in the dataset.
Description Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems
and Coordinate Transformations.
These data were contributed by the originator to NOAA's former National Oceanographic Data Center (NODC) and are part of a
larger compilation archived as oceanographic data by NCEI. The following brine disposal data sets with grain size information
compiled by SAIC were submitted to NGDC in December of 1979: MGG03495001 (Gus III 10/3/78-11/10/78, Brine 1/SEDDY2; 1/23/79-1/28/79,
Brine 2/SEDDY3; 4/25/79-5/2/79, Brine 3/SEDDY4); MGG03505001 (Texas Star 9/17/77, Brine 5); MGG03515001 (Dixie Isle 3/31/78,
Brine 6); Brine 4 (returned for error correction/never resubmitted). Due to extensive errors in weight percentage totals,
none of the preceding data files were added to the NGDC Seafloor Sediment Grain Size database, but copies of these data, with
the exception of Brine 4, are in the archive. In June of 1981 data set MGG03115001 was received from SAI Oakridge through
Francis Mitchel of NODC (42 files from 9/20/1977-10/19/1978 cruises of SW Researcher) but returned to NODC for NOAA/CEAS correction
in May 1982 - the data were never resubmitted. In December of 1983, a final Brine Disposal data set MGG23085001 (13 cruises
of the Lady Gloria) was received from Texas A and M which had no significant errors and was added to the digital grain size
database.
Processing Step
date and time 1983-12-31T00:00:00
description From 1975 through the 1980s, most sediment data collected as part of offshore environmental baseline and/or habitat studies
were part of a suite of measurements sent to NODC or NODC liasons. NODC data managers, primarily Francis Mitchel, then sent
the sediment-related data (e.g., physical properties, composition, geochemstry, mineralogy) to the former NGDC as the authoritative
archive and distribution point for sediment data. Many sediment analyses and descriptions, however, were maintained by NODC
as benthic habitat data, and some additional sediment data were duplicated between the NODC and NGDC archives.
source
source description
R. W. Hann Texas A and M University (TAMU)
AbsoluteExternalPositionalAccuracy
name Of Measure Horizontal Positional Accuracy
measure Description
evaluation Method Description
The horizontal accuracy of data values is approximately .001 degree of latitude/longitude.
QuantitativeAttributeAccuracy
name Of Measure Reliability
measure Description
evaluation Method Description
Quality control was performed by the originator. NCEI performed basic out-of-range location testing.