char_dem_meta

Metadata also available as

Metadata:


Identification_Information:

Citation:

Citation_Information:

Originator: US Geological Survey

Publication_Date: 2005

Publication Name: Topogrid Derived 10 Meter Resolution Digital Elevation Model of Charleston, and Parts of Berkeley, Colleton, Dorchester and Georgetown Counties, South Carolina

Title: char_dem

Edition: Open-File Report 2005-1372

Geospatial_Data_Presentation_Form: raster digital data

Description:

Abstract:

CHAR_DEM is a 10 meter horizontal spacing digital elevation model (DEM) derived from topographic contours, USGS Hydrography data streams, selected USGS spot height elevations and topographic breakline features interpreted from aerial photographs for the Charleston and parts of Berkeley, Dorchester, Colleton and Georgetown Counties South Carolina. The DEM was developed through the use of the TOPOGRID command in ARCGrid (ESRI).

Purpose:

The DEM was developed to provide a higher vertical and horizontal resolution elevation model to support geologic interpretation natural resource mapping and other associated uses.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: Variable dates

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -80.504695

East_Bounding_Coordinate: -79.244767

North_Bounding_Coordinate: 33.261473

South_Bounding_Coordinate: 32.364765

Keywords:

Theme:

Theme_Keyword: DEM

Theme_Keyword: terrain model

Theme_Keyword: Charleston

Theme_Keyword: South Carolina

Place:

Place_Keyword: South Carolina

Place_Keyword: Charleston

Place_Keyword: Berkeley

Place_Keyword: Dorchester

Place_Keyword: Colleton

Place_Keyword: Georgetown

Access_Constraints: NONE

Use_Constraints: NONE

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Peter G. Chirico

Contact_Organization: USGS

Contact_Position: Geographer

Contact_Address:

Address_Type: mailing and physical address

Address: 12201 Sunrise Valley Drive

Address: National Center, MS 926A

City: Reston

State_or_Province: VA

Postal_Code: 20192

Country: USA

Contact_Electronic_Mail_Address: pchirico@usgs.gov

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 9.0.0.535


Data_Quality_Information:

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report: The horizontal cell spacing of the DEM is 10m.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

The vertical accuracy of the DEM is +/- 3.27m. This RMSE value is based on a statistical comparison between 788 vertical control National Geodetic Survey (NGS) benchmarks which are included in this publication.

Lineage:

Source_Information:

Source_Scale_Denominator: 24000

Type_of_Source_Media:

digital line graphs, spot height elevations, photo-interpreted data

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: Variable dates

Source_Currentness_Reference: ground condition

Source_Contribution: USGS

Process_Step:

Process_Description:

The DEM was developed through the TOPOGRID command in ARCGrid (ver 8.3). Datasets used in the Topogrid command were: 1. Digital line graphs of 1:24,000 - scale topographic contours (5, 10, and 20 foot contour intervals). 2. Digital Line Graphs of 1:24,000 Hydrography Data streams, lakes and water bodies. 3. Selected digital point spot height elevations scaled from 1:24,000 scale USGS topographic maps. 4. Photo-interpreted breakline data of preeminent topographic and hydrographic features.

The original DEM was then converted to NAVD88 vertical datum from the NGVD29 through use of the VERTCON software distributed by the NGS.

Process_Date: January 2004 - April 2005

Process_Step:

Process_Description: Metadata imported.


Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: Grid Cell

Row_Count: 9819

Column_Count: 11692

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: 0.000000

False_Easting: 500000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column

Coordinate_Representation:

Abscissa_Resolution: 10.000000

Ordinate_Resolution: 10.000000

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: North American Vertical Datum of 1988

Altitude_Distance_Units: meters

Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates


Distribution_Information:

Resource_Description: Downloadable Data

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 439.497


Metadata_Reference_Information:

Metadata_Date: 20050915

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey

Contact_Person: Peter G. Chirico

Address_Type: mailing and physical address

Address: 12201 Sunrise Valley Drive

Address: National Center, MS 926A

City: Reston

State_or_Province: VA

Postal_Code: 20192

Country: USA

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile


Generated by mp version 2.8.6 on Thu Sep 15 11:20:19 2005