Identification_Information:
Citation:
Citation_Information:
Originator: Schwab, William
Publication_Date: 2000
Title:
Archive of Datasonics SIS-1000 Chirp Subbottom Data Collected During USGS Cruise MGNM 00014, Central South Carolina, 13-30 March 2000
Publication_Information:
Publication_Place: Woods Hole, MA
Publisher: U.S. Geological Survey
Other_Citation_Details: none
Online_Linkage: none
Description:
Abstract:
This CD-ROM contains digital high resolution seismic reflection data collected during the USGS MGNM 00014 cruise. The coverage is the nearshore of central South Carolina. The seismic-reflection data are stored as SEG-Y standard format that 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. The file system format is ISO 9660 which can be read with DOS, Unix, and MAC operating systems with the appropriate CD-ROM driver software installed.
Purpose:
In November 1999, the U. S. Geological Survey, in cooperation with Coastal Carolina University, began a program to produce geologic maps of the nearshore regime off northern South Carolina, utilizing high resolution sidescan sonar, interferometric (direct phase methods) swath bathymetry, and seismic subbottom profiling systems. The study areas extends from the ~7m isobath to about 10km offshore (water depths <12m). The goals of the investigation are to determine regional scale sand resource availability needed for planned beach nourishment programs, to investigate the roles that the inner shelf morphology and geologic framework play in the evolution of this coastal region, and to provide baseline geologic maps for use in proposed biologic habitat studies.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20000313
Beginning_Time: 000000
Ending_Date: 20000330
Ending_Time: 000000
Currentness_Reference: publication date
Status:
Progress: In work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -78.5
East_Bounding_Coordinate: -79.17
North_Bounding_Coordinate: 33.833
South_Bounding_Coordinate: 33.25
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: seismic reflection
Theme_Keyword: SEG-Y
Theme_Keyword: Theme_Keyword Datasonics
Theme_Keyword: SIS-1000
Theme_Keyword: CD-ROM
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Atlantic Ocean
Place_Keyword: South Carolina
Place_Keyword: SC
Access_Constraints:
Use_Constraints:
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Schwab, William
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) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: bschwab@usgs.gov
Data_Set_Credit: Seafloor Mapping Group
Native_Data_Set_Environment: SEG-Y
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value:
Attribute_Accuracy_Explanation:
Logical_Consistency_Report:
The SEG-Y files were plotted onboard ship using SEISUNIX seismic processing software
Completeness_Report: archive of SEG-Y format seismic data
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: 5-10 meters
Horizontal_Positional_Accuracy_Explanation: DGPS is assumed to be accurate within 5-10 meters
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The vertical position was local sea level and there was no correction to a datum
Quantitative_Vertical_Positional_Accuracy_Assessment:
Vertical_Positional_Accuracy_Value:
Vertical_Positional_Accuracy_Explanation:
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 the program QMIPSTOSEGY. The fish depth was recorded in two-way time (ms) in the delay field (byte 109) of the SEG-Y trace header.
Source_Used_Citation_Abbreviation:
Process_Date: 200003
Source_Produced_Citation_Abbreviation:
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Foster, David S.
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) 548-8700
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: dfoster@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:
UTM_Zone_Number: 17
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: .9997
Longitude_of_Central_Meridian: -81
Latitude_of_Projection_Origin: 0
False_Easting: 0
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
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
Entity_and_Attribute_Detail_Citation:
Barry, K.M., Cavers, D.A., and Kneale, C.W., 1975, Recommended standards for digital tape formats, in Digital Tape Standards; Society of Exploration Geophysicists ["Recommended standards for digital tape formats" reprinted from Geophysics, v. 32, p. 1073 - 1084; v. 37, p. 36-44; v. 40, p. 344 - 352.] p. 22 - 30.
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 Open-File Report CD-ROM Data Archive
Distribution_Liability:
This Compact Disc-Read Only Memory (CD-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 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 CD-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: CD-ROM
Format_Version_Number: ISO 9660
Format_Specification:
Format_Information_Content: SEG-Y
File_Decompression_Technique: none
Transfer_Size: 650 Mb
Digital_Transfer_Option:
Offline_Option:
Offline_Media: CD-ROM
Recording_Format: ISO 9660
Compatibility_Information: UNIX, DOS, MAC

Fees:
Metadata_Reference_Information:
Metadata_Date: 20000925
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Foster, David S.
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) 548-8700
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_Time_Convention: universal time
Metadata_Access_Constraints: none
Metadata_Use_Constraints: none

Generated by mp version 2.5.4 on Thu Sep 28 16:34:16 2000