Archive of Chirp Subbottom Data Collected During USGS Cruise ORGN00005, Northeastern Gulf of Mexico, 15 February - 2 March, 2000

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Mark Capone
Originator: Kathryn M. Scanlon
Originator: B. Ann Swift
Publication_Date: 2002
Title:
Archive of Chirp Subbottom Data Collected During USGS Cruise ORGN00005, Northeastern Gulf of Mexico, 15 February - 2 March, 2000
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2002-045
Publication_Information:
Publication_Place: Woods Hole, MA
Publisher: U.S. Geological Survey
Other_Citation_Details: none
Online_Linkage: https://doi.org/10.3133/ofr0245
Description:
Abstract:
This DVD-ROM contains digital high-resolution seismic-reflection data collected during the USGS ORGN00005 cruise. The seismic-reflection data are stored as SEG-Y standard format which can be read and manipulated by most seismic-processing software. Much of the information specific to the data are contained in the headers of the SEG-Y format files. Software is available on this DVD-ROM for viewing and processing the individual swaths using computer systems running a UNIX operating system.
Purpose:
In 1999, the Gulf of Mexico Fishery Management Council recommended that NOAA's National Marine Fisheries Service establish two approximately 11-square-mile areas on the shelf edge in the northeastern Gulf of Mexico as no-fishing areas. One of the areas, the Madison-Swanson Marine Protected Area (MPA) lies about 100 km south of Panama City, Florida. The second area, Steamboat Lumps MPA lies about 150 km SSE of Madison-Swanson. The high-resolution seismic-reflection data contained herein were collected as part of a larger study of the effectiveness of no-fishing reserves in protecting grouper spawning aggregations. These subbottom profiles will be used in conjunction with other data to map the seafloor geology and the character and extent of benthic habitats within and surrounding the two MPAs. They show the shape and acoustic impedence of the seafloor and the thicknesses and orientations of shallow subsurface horizons. These data may be helpful in the following applications:
1.choosing biological monitoring sites
2.management decisions in the MPAs
3.choosing sites for future MPAs
4.studies of paleo-sealevel
5.studies of the inter-relationships between seafloor geology and benthic ecology
6.studies of sedimentary geology and geologic framework of the northeastern Gulf of Mexico
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20000215
Ending_Date: 20000302
Currentness_Reference: Ground Condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -86
East_Bounding_Coordinate: -84.3
North_Bounding_Coordinate: 29.5
South_Bounding_Coordinate: 28
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5e746c59-46f4-4e48-bf48-19dae98fc096
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: seismic reflection
Theme_Keyword: SEG-Y
Theme_Keyword: Chirp
Theme_Keyword: Datasonics SIS 1000
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: sub-bottom profiling
Theme_Keyword: navigational data
Theme_Keyword: image collections
Theme_Keyword: marine geology
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Gulf of Mexico
Place_Keyword: Pascagoula
Place_Keyword: Mississippi
Place_Keyword: West Florida Shelf
Place_Keyword: Madison-Swanson
Place_Keyword: Steamboat Lumps
Access_Constraints:
The U.S. Geological Survey must be referenced as the originator of this dataset in any future products or research derived from these data.
Use_Constraints: none
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Kathryn M. Scanlon
Contact_Organization: U.S. Geological Survey
Contact_Position: Geology of Benthic Habitats Project
Contact_Address:
Address_Type: mailing address
Address:
U.S. Geological Survey Woods Hole Field Center, 384 Woods Hole Road, Quissett Campus
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 457-2323
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: kscanlon@usgs.gov
Data_Set_Credit: USGS Seafloor Mapping Group
Native_Data_Set_Environment: SEG-Y
Data_Quality_Information:
Logical_Consistency_Report:
The data set was acquired during one cruise and one collection platform, therefore is internally consistent.
Completeness_Report: Data is complete with regard to surveyed area.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: The ship was navigated with differential GPS
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 10
Horizontal_Positional_Accuracy_Explanation: DGPS is assumed to be accurate within 5-10 meters
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
There is an apparent accuracy problem in this data set resulting from inaccurate fish depths recorded when the tow fish was raised or lowered. The result is a small vertical offset of the data that can be seen in the plotted profiles. The fish depth appears to adjust to the proper depth within a lag time of several seconds.
Lineage:
Process_Step:
Process_Description:
The subbottom data were recorded on the ISIS data acquisition system in QMIPS format. Chirp subbottom channel extracted from raw QMIPS format sonar files and converted to 16-bit Int. SEG-Y format using program the QMIPSTOSEGY. Before the subbottom data are converted to SEG-Y format, the trace data were padded with zero amplitude samples to correct for the depth of the tow fish beneath the water surface. The SIS-1000 tow fish is equipped wiith a pressure transducer for recording the fish depth to the QMIPS file header. The pressure depth is also stored in the optional part of the SEG-Y trace header, so it can be used for further processing.
Process_Date: 200007
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Foster, Dave
Contact_Organization: U.S. Geological Survey
Contact_Position: Seafloor Mapping Project
Contact_Address:
Address_Type: mailing address
Address:
U.S. Geological Survey, Woods Hole Field Center, 384 Woods Hole Road, Quissett Campus
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-2271
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: dfoster@usgs.gov
Process_Step:
Process_Description:
Edits to the metadata were made to fix any errors that MP v 2.9.50 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. Other minor edits were performed (series information, adding the DOI link, etc.). Added the USGS Thesaurus and appropriate terms as well as the ISO 19115 Topic Categories thesaurus and appropriate term. Originally a DVD only publication, the distribution section was modified to include the format types that are available from the information available online. No attempt was made to add detailed entity and attribute information specific to the data. The user will need to reference the original Open-File Report for that information. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. Additional edits were probably made to the original metadata by someone else who did not document what they changed (20210405). Tweaked a thesaurus name (20211117).
Process_Date: 20211117
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference:
Horizontal X and Y UTM coordinates for each shot location are located in the SEG-Y trace headers
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 16
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: .9997
Longitude_of_Central_Meridian: -087.000000
Latitude_of_Projection_Origin: +00.000000
False_Easting: 500000
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 5
Ordinate_Resolution: 5
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298257
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: assumed sea level
Altitude_Resolution: 1
Altitude_Distance_Units: two-way travel time
Altitude_Encoding_Method: Attribute values
Depth_System_Definition:
Depth_Datum_Name: local surface (sea level)
Depth_Resolution: 1
Depth_Distance_Units: meters
Depth_Encoding_Method: Attribute values
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Soderberg, Nancy
Contact_Organization: U.S. Geological Survey
Contact_Position: Data Library
Contact_Address:
Address_Type: mailing address
Address:
U.S. Geological Survey, Woods Hole Field Center, 384 Woods Hole Road, Quissett Campus
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: nsoderberg@usgs.gov
Resource_Description:
U.S. Geological Suvey Internal DVD-ROM Data Archive. The DVD contains Chirp data in SEG-Y format, shot point navigation, GIF format files of the Chirp subbottom profiles. The Open-File report also contains additional information with regards to data acquisition, processing, and maps of navigation.
Distribution_Liability:
This DVD-ROM publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data published on this DVD-ROM have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and/or the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: SEG-Y
Format_Information_Content: The Open-File Report contains 152 SEG-Y files.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://doi.org/10.3133/ofr0245
Access_Instructions:
The link provided is the DOI link, as opposed to a direct download link. These files will potentially be moved, hence the reason for using just the DOI link for now.
Digital_Form:
Digital_Transfer_Information:
Format_Name: GIF
Format_Information_Content:
The Open-File Report contains a GIF image of each seismic-reflection profile paralleling the SEG-Y files.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://doi.org/10.3133/ofr0245
Access_Instructions:
The link provided is the DOI link, as opposed to a direct download link. These files will potentially be moved, hence the reason for using just the DOI link for now.
Fees: none.
Metadata_Reference_Information:
Metadata_Date: 20211117
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Foster, Dave
Contact_Organization: U.S. Geological Survey
Contact_Position: Seafloor Mapping Group
Contact_Address:
Address_Type: mailing address
Address:
U.S. Geological Survey, Woods Hole Field Center, 384 Woods Hole Road, Quissett Campus
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-2271
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: dfoster@usgs.gov
Metadata_Standard_Name: FGDC Content Standard
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Access_Constraints: none
Metadata_Use_Constraints: none

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2002-045/chirp_subbottom.html>
Generated by mp version 2.9.50 on Thu Nov 18 14:49:53 2021