Identification_Information: Citation: Citation_Information: Originator: U. S. Geological Survey, FISC St. Petersburg Publication_Date: 2008 Title: EAARL Bare Earth Topography-Colonial National Historical Park Edition: First Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open File Report Issue_Identification: 2008-1326 Publication_Information: Publication_Place: FISC St. Petersburg Publisher: U. S. Geological Survey Other_Citation_Details: The U. S. Geological Survey in cooperation with the National Park Service (NPS) and the National Aeronautics and Space Administration (NASA), is to provide the coastal management community with usable, useful digital elevation products. The U. S. Geological Survey processes aircraft Lidar data (provided by NASA), develops software tools and algorithms to use and analyze the data and make products available to the coastal management community through a variety of media, including the internet, CD-ROMs, DVDs and data reports. Larger_Work_Citation: Citation_Information: Series_Information: Publication_Information: Description: Abstract: GIS contour lines of Colonial National Historical Park derived from a Lidar GeoTIFF file. Purpose: This contour shapefile was generated from a Lidar GeoTIFF. It shows contour lines at 1-5 meter intervals, and will be used to aid in the interpretation and display of data files. Supplemental_Information: See the source Lidar GeoTIFF tile for more specific accuracy information. Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20050418 Single_Date/Time: Calendar_Date: 20050419 Single_Date/Time: Calendar_Date: 20050420 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: Unknown Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: East_Bounding_Coordinate: North_Bounding_Coordinate: South_Bounding_Coordinate: Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: Contour map Theme_Keyword: elevation change Place: Place_Keyword_Thesaurus: none Place_Keyword: Colonial National Historical Park Place_Keyword: Virginia Stratum: Stratum_Keyword_Thesaurus: none Stratum_Keyword: First surface topography Temporal: Access_Constraints: Any use of these data signifies a user's agreement to comprehension and compliance of the U. S. Geological Survey Standard Disclaimer. Ensure all portions of metadata are read and clearly understood before using these data in order to protect both user and U. S. Geological Surveyinterests. See section 6.3 Distribution Liability. Use_Constraints: Although the U. S. Geological Survey is making these data sets available to others who may find the data of value, the U. S. Geological Surveydoes not warrant, endorse, or recommend the use of these data setse for any given purpose. The user assumes the entire risk related to the use of these data. These data sets are not for navigational purposes. The U. S. Geological Surveyis providing these data "as is", and the U. S. Geological Surveydisclaims any and all warranties, whether expressed or implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose. In no event will the U. S. Geological Surveybe liable to you or to any third party for any direct, indirect, incidental, consequential, special, or exemplary damages or lost profits resulting from any use or misuse of these data. Acknowledgement of the U.S. Geological Survey, FISC St. Petersburg office, as a data source would be appreciated in products developed from these data, and such acknowledgement as is standard for citation and legal practices for data source is expected by users of this data. Sharing new data layers developed directly from these data would also be appreciated by the U. S. Geological Surveystaff. Users should be aware that comparisons with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in photo interpretation, mapping conventions, and digital processes over time. These data are not legal documents and are not to be used as such. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Jacobs Technolpogy contracted to U. S. Geological Survey Contact_Person: Amar Nayegandhi Contact_Position: Computer Sctientist Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727 803-8747 Contact_Electronic_Mail_Address: anayegandhi@usgs.gov Hours_of_Service: 8:30-5:00 M-F EST Contact_Instructions: Call Survey for Details Browse_Graphic: Data_Set_Credit: The U. S. Geological Survey, FISC St. Petersburg office, would like to acknowledge NASA Goddard Space Flight Center for their cooperation and assistance in the development of the data. The U. S. Geological Survey would also like to acknowledge National Park Service management and personnel at Colonial National Historical Park. Security_Information: Security_Classification_System: unknown Security_Classification: Unclassified Security_Handling_Description: unknown Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcMap 9.2.2.1350. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The expected accuracy of the measured variables is as follows: attitude within 0.07 degree, 3-cm nominal ranging accuracy, and verticle elevation accuracy of +/- 15cm (bare earth). Quality checks are built into the dataprocessing software. Logical_Consistency_Report: This layer was generated from an existing Lidar tile. Completeness_Report: Contour lines break where there was no data (value of -100) in the original Lidar tiles. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Raw elevation measurements have been determined to be within 1.5 meter horizontal accuracy. Processing steps (grid interpolation) may introduce additional error which has not been tested at the time of this publication. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Elevations of the DEM are vertically consistent with the point elevation data, +/- 15cm. Lineage: Source_Information: Source_Scale_Denominator: 2500 Type_of_Source_Media: computer program Source_Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20050418 Single_Date/Time: Calendar_Date: 20050419 Single_Date/Time: Calendar_Date: 20050420 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: unknown Source_Contribution: unknown Process_Step: Process_Description: The Lidar GeoTIFF data was too coarse to create aesthetically pleasing contours. A Neighborhood Statistics operation was run on the Lidar GeoTIFF file in ARCMap. The settings for the Neighborhood Statistics operation were a 14x14 cell rectangle, using the mean as the statistic type and then output to a temporary raster grid. Process_Date: 20071205 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U. S. Geological Survey, FISC St. Petersburg Contact_Person: Laurinda J. Travers Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: Saint Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-803-8747 Hours_of_Service: 8:30-5:00 M-F EST Contact_Instructions: Call Survey for Details Process_Step: Process_Description: Contour lines were generated using the Contour operation in ArcMap. The temporary Neighborhood Statistics grid was used as the input surface and the contour interval was set to 1-5 meters, depending on elevation and slope. This was output to a permanent shapefile. Process_Date: 20080105 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U. S. Geological Survey, FISC St. Petersburg Contact_Person: Laurinda J.Travers Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: Saint Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-803-8747 Hours_of_Service: 8:30-5:00 M-F EST Process_Step: Process_Description: Metadata imported into ArcCatalog from XML file. Process_Date: 20080111 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U. S. Geological Survey, FISC St. Petersburg Contact_Person: Laurinda J. Travers Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: Saint Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727 803-8747 Hours_of_Service: 8:30-5:00 M-F EST Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 18 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -75.000000 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: 1.000000 Ordinate_Resolution: 1.000000 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_Resolution: .15 Altitude_Distance_Units: meters Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: This contour shapefile was generated from a Lidar GeoTIFF. It shows contour lines at 1-5 meter intervals, and will be used to aid in the interpretation and display of data files. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U. S. Geological Survey, FISC St. Petersburg Contact_Person: Emily Klipp Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-803-8747 Contact_Electronic_Mail_Address: eklipp@usgs.gov Hours_of_Service: 8:30-5:00 M-F EST Contact_Instructions: Call USGS for Details Resource_Description: GIS contour lines of Colonial National Historical Park derived from a Lidar GeoTIFF file. Distribution_Liability: The U. S. Geological Survey gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from a U. S. Geological Survey server and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on a computer system at the U. S. Geological Survey, no warranty expressed or implied is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: DEM Transfer_Size: 0.000 Digital_Transfer_Option: Offline_Option: Offline_Media: DVD Fees: Contact USGS for Details Ordering_Instructions: Contact USGS for Details Custom_Order_Process: Contact U. S. Geological Survey for Details Available_Time_Period: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20050418 Single_Date/Time: Calendar_Date: 20050419 Single_Date/Time: Calendar_Date: 20050420 Metadata_Reference_Information: Metadata_Date: 20080222 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U. S. Geological Survey, FISC St. Petersburg Contact_Person: Laurinda J. Travers Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-803-8747 Contact_Electronic_Mail_Address: ltravers@usgs.gov Hours_of_Service: 8:30-5:00 M-F EST Contact_Instructions: Call Survey for Details Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Security_Information: Metadata_Security_Classification: Unclassified