The flights over Biscayne National Park constituted the first survey of a coral reef ecosystem using the NASA EAARL instrument. An acquisition artifact, a subtle NW/SE striation perpendicular to the flight line, is present in some data tiles. Subsequent refinements in the acquisition and processing of the data have substantially reduced the presence of these artifacts in datasets derived from later surveys.
United States Geological Survey Center for Coastal and Watershed Studies, 2006, bisc_e580n2802edit1.tif: Biscayne National Park USGS-NPS-NASA EAARL Submarine Topography, USGS, St. Petersburg, FL.
This is a Raster data set. It contains the following raster data types:
Planar coordinates are encoded using row and column
Abscissae (x-coordinates) are specified to the nearest 1.000000
Ordinates (y-coordinates) are specified to the nearest 1.000000
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257222.
The USGS Center for Coastal and Watershed Studies would like to acknowledge NASA Goddard Space Flight Center for their cooperation and assistance in the development of the data. The National Park Service also contributed by editing the lidar tiles to remove processing artifacts.
Dr. John C. Brock
United States Geological Survey, Center for Coastal and Watershed Studies
Research Oceanographer
600 4th Street South
St. Petersburg, Florida 33701
USA
727 803-8747 ext3088 (voice)
727 803-2031 (FAX)
jbrock@usgs.gov
- Hours_of_Service: Monday-Friday, 8-5, EST
One objective of this research is the creation of techniques for the surveying of coral reefs for the purposes of habitat mapping, ecological monitoring, change detection, and event assessment (e.g., bleaching, hurricanes, disease outbreaks, etc.). As part of this project, data from an innovative instrument developed at NASA Wallops Flight Facility, the NASA Experimental Airborne Advanced Research Lidar (EAARL), was used. This sensor has the potential to make significant contributions in this realm for measuring water depth and conducting cross-environment surveys. High spectral resolution, water-column correction, and low costs were found to be key factors in providing accurate and affordable imagery to managers of coastal tropical habitats.
Person who carried out this activity:
United States Geological Survey Center for Coastal and Watershed Studies
c/o Amar Nayegandhi
Computer Scientist
600 4th Street South
St. Petersburg, Florida 33701-
USA
727-803-8747 (voice)
- Hours_of_Service: 8:00am to 5:00pm Monday thru Friday, EST
- Contact_Instructions: Call Survey for Details
Person who carried out this activity:
National Park Service South Florida / Caribbean Network Inventory and Monitoring Program
c/o Judd Patterson
Research Assistant
18001 Old Cutler Road, Suite 419
Palmetto Bay, Florida 33157
United States
(305) 252-0347 (voice)
(305) 253-0463 (FAX)
Brock, J.C.; Wright, C.W.; Sallenger, A.H; K, 2003, Basis and Methods of NASA Ariborne Topographic Mapper Lidar Surveys for Coastal Studies: Journal of Coastal Research, Proceedings of the Seventh International Conference on Remote Sensing for Marine and Coastal Environments, US Geological Survey, West Palm Beach, FL; Miami, FL; St. Petersburg, FL.
Nayegandhi, A.; Brock, J.C.; Wright, C.W.; Clay, May 23-28, 2004, Processing and Filtering 'Bare Earth' Topographic Data Acquired by NASA's Experimental Advanced Airborne Research Lidar (EAARL).
Nayegandhi, A.; Brock, J.C.; Wright C.W., Small-footprint, waveform-resolving lidar estimation of submerged and sub-canopy topography in coastal environments..
The expected accuracy of the measured variables are as follows: attitude within 0.07 degree, 3-cm nominal ranging accuracy, and vertical elevation accuracy of +/-20 cm for the "first return" surface. Quality checks are built into the data-processing software.
Raw elevation measurements have been determined to be within 1 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, +/-20 cm.
Several regions of the dataset are labeled as "No Data", which corresponds to a cell value of -100 m in the GeoTiff file. These "No Data" areas are a result of the survey not covering a particular region, optical water depth of greater than 1.5 Secchi disc depths, or the manual removal of lidar processing artifacts.
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- 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.
- Use_Constraints:
- Although the USGS is making these data sets available to others who may find the data of value, USGS does not warrant, endorse, or recommend the use of these data 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. USGS is providing these data "as is", and 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 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 Center for Coastal and Watershed Studies 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 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
c/o Jerry Butcher
Windows System Administrator
600 4th Street South
St. Petersburg, FL 33701
USA
727-803-8747 ext3049 (voice)
Biscayne National Park Digital Map Atlas DVD
The United States Geological Survey shall not 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.The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. The related graphics are intended to aid the data user in acquiring relevant data; it is not appropriate to use the related graphics as data.
The United States 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 an USGS 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 United States 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.
Data format: | TIFF Size: 15.291 |
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Media you can order: | DVD-ROM |
Call USGS for details
Call USGS for Details
United States Geological Survey
600 4th Street South
St. Petersburg, Florida 33704
USA
727-803-8747 (voice)
- Contact_Instructions: Call Survey for Details