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: 20240318 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: whsc_data_contact@usgs.gov Contact_Instructions: The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240318) Metadata_Standard_Name: FGDC Content Standard Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none Metadata_Use_Constraints: none