United States Geological Survey, FISC St. Petersburg
December 2007
vector digital data
Open File Report
2007-1431
St. Petersburg, FL
USGS
The USGS, 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 USGS 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.
EAARL Topography-Padre Island National SeashoreFirstnone
GIS contour lines of Padre Island National Seashore derived from a Lidar GeoTIFF file.
This contour shapefile was generated from a Lidar GeoTIFF. It shows contour lines at 1 meter intervals, and will be used to aid in the interpretation and display of data files.
See the source Lidar GeoTIFF tile for more specific accuracy information.
en
200509302005100120051002
ground condition
Unknown
NONE
Contour mapelevation change
Padre Island National Seashore
Texas
United States Gulf of Mexico
Bare earth topography
Any use of these data signifies a user's agreement to comprehension and compliance of the USGS Standard Disclaimer. Ensure all portions of metadata are read and clearly understood before using these data in order to protect both user and USGS interests. See section 6.3 Distribution Liability.
Although the USGS 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 USGS is providing these data "as is", and the USGS 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 USGS 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.
United States Geological Survey, FISC St. Petersburg
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727 803-8747
8:30-5:00 M-F EST
Call Survey for Details
The USGS 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 USGS would also like to acknowledge National Park Service management and personnel at Padre Island National Seashore.
Unclassified
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcMap 9.1.0.722
Shapefile
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 data-processing software.
Contour lines break where there was no data (value of -100) in the original Lidar tiles.
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.
Elevations of the DEM are vertically consistent with the point elevation data, +/- 15cm.
computer program
200509302005100120051002
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.
Summer 2007
National Park Service South Florida/Caribbean Network
mailing and physical address
18001 Old Cutler Road, Suite 419
Palmetto Bay
FL
33157
USA
(305) 252-0347
8:30-5:00 M-F EST
Call Survey for Details
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 (meter). This was output to a permanent shapefile.
Summer 2007
National Park Service South Florida/Caribbean Network
mailing and physical address
18001 Old Cutler Road, Suite 419
Palmetto Bay
FL
33157
USA
(305) 252-0347
8:30-5:00 M-F EST
Metadata imported into ArcCatalog from XML file.
20070911
United States Geological Survey ,FISC St. Petersburg
Laurinda J. Travers
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727 803-8747
8:30-5:00 M-F EST
This layer was generated from an existing Lidar tile.
Vector
Universal Transverse Mercator
14
0.999600
-75.000000
0.000000
500000.000000
0.000000
row and column
1.000000
1.000000
meters
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257222
GCS_North_American_1983NAD_1983_UTM_Zone_14N
North American Vertical Datum of 1988
.15
meters
Explicit elevation coordinate included with horizontal coordinates
United States Geological Survey, FISC St. Petersburg
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727-803-8747
8:30-5:00 M-F EST
Call USGS for Details
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.
0.000
Contact USGS for Details
Contact U. S. Geological Survey for Details
200509302005100120051002
United States Geological Survey, FISC St. Petersburg
Laurinda J. Travers
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727-803-8747
8:30-5:00 M-F EST
Call Survey for Details
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
Unclassified
20080108en
20080108152734002008010912024700TRUE{36D81ED4-A6B4-4C76-909F-70A0C4751918}20080108file://\\IGSAFPESWS114\D$\Science_Support_PC\L_Travers\J_Brock\Updated_Lidar_OFRS\PAIS\Metadata\Meta_temps\Meta_contourLocal Area Network