Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2007 Title: GRAINSIZE_POLY - Grain Size Distribution of Surficial Sediments offshore of the Grand Strand, South Carolina region (Polygon) Edition: 1.0 Geospatial_Data_Presentation_Form: vector 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 Online_Linkage: http://pubs.usgs.gov/of/2005/1346/arcgis/samples/GrainSize_poly.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: 2006 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 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 polygon shapefile outlining grain size distribution throughout the 1999 - 2003 survey area, offshore of the Grand Strand, SC. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date:2007 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -79.143795 East_Bounding_Coordinate: -78.516507 North_Bounding_Coordinate: 33.845505 South_Bounding_Coordinate: 33.294296 Keywords: Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Woods Hole Science Center Theme_Keyword: WHSC Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: grab samples Theme_Keyword: sample texture Theme_Keyword: grain size Theme_Keyword: shipek Grab Sampler Theme_Keyword: grainsize distribution Theme_Keyword: ESRI polygon shapefile Theme_Keyword: interpretive data layer Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: oceans and coastal Theme_Keyword: oceans and estuaries Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: General Place_Keyword: South Carolina Place_Keyword: North Myrtle Beach Place_Keyword: Grand Strand Place_Keyword: Myrtle Beach Place_Keyword: Surfside Place_Keyword: Garden City Place_Keyword: Pawleys Island Place_Keyword: Waites Island Place_Keyword: Southeast United States Place_Keyword: United States Place_Keyword: Atlantic Ocean Access_Constraints: None Use_Constraints: 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_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Jane Denny 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: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2311 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: jdenny@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2005/1346/images/grainsize_poly.jpg Browse_Graphic_File_Description: Locations of surficial grab samples collected in 2000 and 2001 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: Attribute_Accuracy: Attribute_Accuracy_Report: Interpretations of grain size distribution are based on sample textural information, sidescan-sonar imagery, swath bathymetry and seismic data. The mean grain size of surficial sediment samples were used to generate the grain size polygons. These data were manually interpreted and digitized at a scale of 1:75,000 (regional interpretation). Completeness_Report: These data include all grain size information. Grain size distribution is represented as polygons. All data were included in the analysis. Logical_Consistency_Report: Additional checks for topologic consistency were conducted to ensure polygon boundaries close, and neighboring polygons share borders. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: DGPS is assumed to be accurate within 1-2 meters. Standard GPS is assumed accurate within 5-10 meters. Unless noted, all GPS/DGPS data is referenced to WGS84 (NAD83). Accuracy of sample locations is assumed to be comparable to DGPS accuracy (+ 2 m). Sediment statistics at each sample location were used to generate the grain size polygons. Lineage: Process_Step: Process_Description: The grab samples were acquired with a shipek grab sampler by Coastal Carolina University. Textural analyses were conducted by Coastal Carolina University and the USGS. Process_Date: 2000 - 2002 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jane Denny 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: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2311 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: jdenny@usgs.gov Process_Step: Process_Description: Sample locations and textural information were used to generate a point shapefile. Process_Date: 2002 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jane Denny 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: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2311 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: jdenny@usgs.gov Process_Step: Process_Description: The mean grain size of the surface grab samples were then used to hand digitize grain size polygons. The sidescan-sonar image was used as a base to help distinguish grain size boundaries. Source_Used_Citation_Abbreviation: grabs.dbf Source_Used_Citation_Abbreviation: grabs.shp Source_Used_Citation_Abbreviation: grabs.shx Process_Date: 2004 Source_Produced_Citation_Abbreviation: grainsize_poly.dbf Source_Produced_Citation_Abbreviation: grainsize_poly.shp Source_Produced_Citation_Abbreviation: grainsize_poly.shx Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jane Denny 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: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2311 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: jdenny@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: G-polygon Point_and_Vector_Object_Count: 213 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000008 Longitude_Resolution: 0.000008 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: grainsize_poly Entity_Type_Definition: ESRI point shapefile Entity_Type_Definition_Source: ESRI Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: Id Attribute_Definition: Internal Identifier Attribute_Definition_Source: ESRI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 3 Attribute_Units_of_Measure: integer count Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Grain_Size Attribute_Definition: Grain size definition Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Coarse Sand Enumerated_Domain_Value_Definition: Sediment of 0-1 phi Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: Fine Sand Enumerated_Domain_Value_Definition: Sediment of 2-3 phi Enumerated_Domain_Value_Definition_Source: USGS Enumerated_Domain: Enumerated_Domain_Value: Medium Sand Enumerated_Domain_Value_Definition: Sediment of 1-2 phi Enumerated_Domain_Value_Definition_Source: USGS Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road 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 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: SHP Format_Version_Number: ArcGIS 9.0 Format_Specification: ESRI Polygon Shapefile Format_Information_Content: Shapefile contains polygons defining grain size distribution on the inner shelf offshore of the Grand Strand, SC File_Decompression_Technique: no compression applied Transfer_Size: 0.129 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2005/1346/arcgis/samples/GrainSize_Poly.zip Access_Instructions: Data can be downloaded via the World Wide Web (WWW) 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) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com. Metadata_Reference_Information: Metadata_Date: 20070117 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Jane Denny 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 x2311 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: jdenny@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