Identification_Information: Citation: Citation_Information: Originator: U. S. Geological Survey, FISC St. Petersburg Publication_Date: Fall 2007 Title: EAARL Topography-Gulf Islands National Seashore-Mississippi Edition: First Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open File Report Issue_Identification: 2007-1377 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: USGS Larger_Work_Citation: Citation_Information: Series_Information: Publication_Information: Description: Abstract: Represents the extent of usable Lidar data to a specific 2x2km tile. Purpose: This shapefile was generated as an intermediate step to create a series of USGS Lidar maps. The polygons represent specific regions of a 2x2km tile that have usable Lidar data. All areas not covered by polygons correspond to areas of No Data on the Lidar tile. This shapefile is particularly useful as an analysis mask within ArcMap Spatial Analyst. 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: 20050901, 20050903, 20050904, 20050907, 20050908 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: Extent Place: Place_Keyword: Gulf Islands National Seashore Place_Keyword: Mississippi Place_Keyword: Gulf of Mexico Stratum: Stratum_Keyword: Bare earth topography Temporal: Access_Constraints: Any use of these data signifies a user's agreement to comprehension and compliance of the U. S. Geological Survey's 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 Survey interests. 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 USGS does 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 Survey is providing these data "as is", and the U. S. Geological Survey disclaims 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 Survey be 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 USGS staff. 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: U. S. Geological Survey, FISC St. Petersburg 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 Hours_of_Service: Monday-Friday, 8-5, EST Contact_Instructions: Call U. S. Geological 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 Gulf Islands National Seashore. Security_Information: Security_Classification: Unclassified Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcMap 9.2.0 1324 Data_Quality_Information: Attribute_Accuracy: Logical_Consistency_Report: This extent layer was generated from existing Lidar tile data using ARCMap 9.1. Completeness_Report: This layer is complete. 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: Type_of_Source_Media: computer program Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20050901, 20050903, 20050904, 20050907, 20050908 Source_Currentness_Reference: ground condition Process_Step: Process_Description: The floating-point Lidar data required conversion to integer raster. This was done with the Int() command using ArcMap Raster Calculator. Process_Date: July 2007 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: National Park Service South Florida/Caribbean Network Contact_Person: Iris Wilson Contact_Position: Research Assistant Contact_Address: Address_Type: mailing and physical address Address: 18001 Old Cutler Road City: Palmetto Bay State_or_Province: FL Postal_Code: 33157 Country: USA Contact_Voice_Telephone: (305) 252-0347 Hours_of_Service: 8:30-5:00 M-F EST Process_Step: Process_Description: The Raster to Feature command is used to convert the data into a vector shapefile. Process_Date: Summer 2007 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: National Park Service South Florida/Caribbean Network Contact_Person: Iris Wilson Contact_Position: Research Assistant Contact_Address: Address_Type: mailing and physical address Address: 18001 Old Cutler Road City: Palmetto Bay State_or_Province: FL Postal_Code: 33157 Country: USA Contact_Voice_Telephone: (305) 252-0347 Hours_of_Service: 8:30-5:00 M-F EST Process_Step: Process_Description: An attribute query is run to locate polygons with a Grid Code value of -100. An edit session is started on the shapefile, the queried polygons are removed using the delete key, edits are saved, and the edit session is ended. Process_Date: Summer 2007 Process_Step: Process_Description: Metadata created. Process_Date: 20070829 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U. S. Geological Survey, FISC St. Petersburg 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 Spatial_Data_Organization_Information: Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 16 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: 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: Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U. S. Geological Survey, FISC St. Petersburg 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 Hours_of_Service: 8:30-5:00 M-F EST Contact_Instructions: Call U. S. Geological Survey for Details Distribution_Liability: Neither the U. S. Geological Survey nor the National Park Service shall be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics are not legal documents and are not intended to be used as such. Although all data published have been used by the U. S. Geological Survey and the National Park Service, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U. S. Geological Survey in the use of these data or related materials. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Transfer_Size: 0.000 Ordering_Instructions: Call U. S. Geological Survey for Details Custom_Order_Process: Call U. S. Geological Survey for Details Available_Time_Period: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20050901, 20050903, 20050904, 20050907, 20050908 Metadata_Reference_Information: Metadata_Date: 20070829 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U. S. Geological Survey, FISC St. Petersburg 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 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