PALEOCH_GRD - ESRI ArcRaster grid representing the elevations of paleochannel unconformities underlying the inner shelf of Long Bay, South Carolina

Metadata also available as - [Questions & Answers] - [XML]

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2007
Title:
PALEOCH_GRD - ESRI ArcRaster grid representing the elevations of paleochannel unconformities underlying the inner shelf of Long Bay, South Carolina
Edition: 1.0
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2005-1346
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage:
<http://pubs.usgs.gov/of/2005/1346/arcgis/seismic_srf/paleoch_grd.zip>
Larger_Work_Citation:
Citation_Information:
Originator: Baldwin, W.E.
Originator: Denny, J.F
Originator: Schwab, W.C.
Originator: Gayes, P.T.
Originator: Morton, R.A.
Originator: Driscoll, N.W.
Publication_Date: 2007
Title:
Geologic Framework Studies of South Carolina's Long Bay from Little River Inlet to Winyah Bay, 1999-2003; geospatial data release
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2005-1346
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Other_Citation_Details: 1 DVD-ROM
Online_Linkage: <http://pubs.usgs.gov/of/2005/1346/>
Description:
Abstract:
In 1999, the USGS, in partnership with the South Carolina Sea Grant Consortium, began a study to investigate processes affecting shoreline change along the northern coast of South Carolina, focusing on the Grand Strand region. Previous work along the U.S. Atlantic coast shows that the structure and composition of older geologic strata located seaward of the coast heavily influences the coastal behavior of areas with limited sediment supply, such as the Grand Strand. By defining this geologic framework and identifying the transport pathways and sinks of sediment, geoscientists are developing conceptual models of the present-day physical processes shaping the South Carolina coast. The primary objectives of this research effort are: 1) to provide a regional synthesis of the shallow geologic framework underlying the coastal upland, shoreface and inner continental shelf, and define its role in coastal evolution and modern beach behavior; 2) to identify and model the physical processes affecting coastal ocean circulation and sediment transport, and to define their role in shaping the modern shoreline; and 3) to identify sediment sources and transport pathways; leading to construction of a regional sediment budget.
Purpose:
This data set contains a surface depicting the elevations paleochannel unconformities underlying the inner shelf of Long Bay, offshore of the South Carolina Grand Strand. Chirp seismic data collected with Benthos SIS-1000 and Edgetech SB-512 acquisition systems were processed using SIOSEIS (Scripps Institute of Oceanography) and Seismic Unix (Colorado School of Mines) to produce segy files and jpg images of the profiles. Data were then imported into Landmark SeisWorks, a digital seismic interpretation package, where the paleochannel unconformities were interpreted and digitized to calculate their depth beneath the seafloor. Interpreted horizons were exported at every 50th shot as xyz points, and imported to ArcGIS for interpolation into a 100-m raster grid.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1999
Ending_Date: 2003
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -79.159554
East_Bounding_Coordinate: -78.532220
North_Bounding_Coordinate: 33.849791
South_Bounding_Coordinate: 33.189317
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: WHSC
Theme_Keyword: Seafloor
Theme_Keyword: Marine Geology
Theme_Keyword: Seismic Reflection Profile
Theme_Keyword: Benthos SIS-1000
Theme_Keyword: Edgetech SB-512
Theme_Keyword: Chirp
Theme_Keyword: ArcGIS Raster
Theme_Keyword: paleochannels
Theme_Keyword: unconformitites
Theme_Keyword: elevation
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: oceans and coastal
Theme_Keyword: oceans and estuaries
Theme_Keyword: geoscientific Information
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: Grand Strand
Theme_Keyword: North Myrtle Beach
Theme_Keyword: Myrtle Beach
Theme_Keyword: Surfside
Theme_Keyword: Garden City
Theme_Keyword: Pawleys Island
Theme_Keyword: Waites Island
Theme_Keyword: Southeast United States
Theme_Keyword: United States
Theme_Keyword: Atlantic Ocean
Access_Constraints: None
Use_Constraints:
These data should not be used at resolutions for which it is not intended. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2226
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: <http://pubs.usgs.gov/of/2005/1346/images/paleoch_grd.jpg>
Browse_Graphic_File_Description:
elevations of paleochannel unconformities beneath the Long Bay inner shelf
Browse_Graphic_File_Type: JPEG
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780
Data_Quality_Information:
Logical_Consistency_Report:
No additional checks for topological consistency were performed on the data.
Completeness_Report:
All available interpretations of paleochannel unconformities are included in this data set.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Seismic navigation was by differential GPS; positional accuracy to less than 10 m
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Seismic data were not corrected for tides. Paleochannel unconformity depth was calculated as the distance between the seafloor and their surfaces from interpretation of seismic reflection profiles. A gridded surface of seafloor bathymetry (bathy_grd) was then added to the gridded paleochannel surface to place it at a proper elevation beneath the seafloor.
Lineage:
Process_Step:
Process_Description:
Seismic profiles were interpreted in Landmark software. Each seismic profile was reviewed and acoustic reflectors representing the sea floor and paleochannel unconformities were digitized.
Process_Date: 2003
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2226
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
Process_Step:
Process_Description:
A horizon representing the depth of paleochannel unconformities from the sea floor was exported as x,y,z (depth to reflector) and then imported to ArcGIS as a point shapefile.
Process_Date: 2003
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2226
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
Process_Step:
Process_Description:
XYZ point data were used to generate a Triangulated Irregular Network surface using ARCGIS Create TIN and Edit TIN.
The resulting TIN surface was converted to a floating point grid using ARCGIS TIN to Raster, specifying the natural neighbors method and 100 meter cellsize.
Process_Date: 2003
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2226
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
Process_Step:
Process_Description:
Using the raster calculator in ArcGIS, a sea floor bathymetry grid (bathy_grd) was added to the paleochannel surface in order to approximate the proper elevation beneath the sea floor.
Process_Date: 2003
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2226
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 721
Column_Count: 568
Vertical_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 17
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -81.000000
Latitude_of_Projection_Origin: 0.00000
False_Easting: 500000.000000
False_Northing: 0.00000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 100.00
Ordinate_Resolution: 100.00
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Vertical_Coordinate_System_Definition:
Depth_System_Definition:
Depth_Datum_Name: Mean lower low water
Depth_Resolution: 0.5
Depth_Distance_Units: meters
Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview: Elevation of paleochannel unconformities in ESRI GRID format.
Entity_and_Attribute_Detail_Citation: USGS
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2226
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
Resource_Description: Downloadable Data
Distribution_Liability:
Although all data have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCG
Format_Version_Number: ArcGIS 9.0
Format_Specification: ESRI ArcRaster GRID format
Format_Information_Content: no compression applied
Transfer_Size: 2.255
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://pubs.usgs.gov/of/2005/1346/arcgis/seismic_srf/paleoch_grd.zip>
Offline_Option:
Offline_Media: DVD-ROM
Recording_Capacity:
Recording_Density: 4.75
Recording_Density_Units: Gbytes
Recording_Format: UDF
Fees: none
Technical_Prerequisites:
These data are available in Environmental Systems Research Institute (ESRI) GRID format. The user must have software capable of importing and processing the data file.
Metadata_Reference_Information:
Metadata_Date: 20070117
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Wayne Baldwin
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2226
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Extensions:
Online_Linkage: Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Generated by mp version 2.9.2 on Wed Mar 07 13:09:28 2007