U.S Geological Survey, Biological Resources Division's National W, 2003, Aerial Survey Maps from Brown Marsh Survey of Coastal Louisiana:.This is part of the following larger work.
Barataria-Terrebonne National Estuary Program Scientific-Technical Committee, 20010207, Requests for submission of Scope of Services for Marsh Dieback and Nutria Control Emergency Response.: Barataria-Terrebonne National Estuary Program Scientific-Technical Committee, Thibodaux, LA.Online Links:
This is a Raster data set.
Planar coordinates are encoded using Coordinate Pair
Abscissae (x-coordinates) are specified to the nearest .61
Ordinates (y-coordinates) are specified to the nearest .61
Planar coordinates are specified in Meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is GRS 1980.
The semi-major axis of the ellipsoid used is 6378137.0.
The flattening of the ellipsoid used is 1/298.257.
| Value | Definition |
|---|---|
| Brown | The percentage of marsh color to determine health designation |
| Brown-Green | The percentage of marsh color to determine health designation |
| Green-Brown | The percentage of marsh color to determine health designation |
| Green | The percentage of marsh color to determine health designation |
U.S. Geological Survey, Biological Resource Division's, National Wetlands Research Center
c/o Tommy Michot
Wildlife Biologist
700 Cajundome Blvd
Lafayette, Louisiana 70506
337-266-8664 (voice)
337-266-8592 (FAX)
tommy_michot@usgs.gov
To determine the extent of the Brown Marsh phenomenon of Coastal Louisiana
U.S. Geological Survey, National Wetlands Research Center, 2000, GPS coordinates with marsh values: USGS National Wetlands Research Center, Lafayette, LA.
Louisiana Oil Spill Coordinator's Office (LOSCO), 1999, Thematic Mapper Image of Louisiana, UTM15 NAD83, LOSCO: Louisiana State University, Baton Rouge, LA.
Louisiana Oil Spill Coordinator's Office (LOSCO), 1999, Parish Boundaries of Louisiana from LDOTD source data: Louisiana State University, Baton Rouge, LA.
The surveys were conducted through aerial observations by the pilot/wildlife biologist and another scientific observer on their respective sides of the aircraft. The health values assigned a given area are reflective of the observers. A more formal on-ground assessment would be needed to determine accuracy of attributes.
No known omissions. Due to weather or other unforeseen circumstances, flights may not be done monthly.
Flight line transects were predetermined before flight. Each and every subsequent flight was flown according to these transects. Observations from both sides of the aircraft were taken every five second along these transects. GPS readings were automatically recorded with each observation.
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- Data generated by the Brown Marsh principal investigators will be available only to the project’s other principal investigators, following the established QA/QC review, for a period of two years. After two years from the finalization of the data, it shall be made available to the public. Please contact the principal investigator for exact date of availability. It is strongly recommended that these data be directly acquired from the Brown Marsh Database Information Management System server and not indirectly through other sources which may have changed the data in some way.
- Use_Constraints:
- Acknowledgement of the principal investigator 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 these data. Users should be aware that comparison with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in mapping conventions, methodologies, data collections and computer processes over time. The principal investigator and the distributor shall not be liable for improper or incorrect use of these data, based on the description of appropriate/inappropriate uses described in this metadata document. The principal investigator and distributor make no claims as to the data’s suitability for other purposes. These data are not legal documents and are not to be used as such.
U.S. Geological Survey, National Wetlands Research Center
c/o Scott Wilson
Electrical Engineer
700 Cajundome Blvd
Lafayette, LA 70506
USA
337-226-8644 (voice)
337-266-8616 (FAX)
scott_wilson@usgs.gov
- Hours_of_Service: 8:00 am to 4:00 pm CST, Monday thru Friday
Brown Marsh Aerial Survey Maps
Although these data have been processed successfully on a computer system at the designated principal investigator’s facility, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other 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. It is strongly recommended that these data are directly acquired from the official Brown Marsh Database Information Management System server or from the principal investigator, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be given to the contents of the metadata file associated with these data. The Brown Marsh committee shall not be held liable for improper or incorrect use of the data described and/or contained herein. So, these data are provided as is and without any express or implied warranties. Also, use of trade names or commercial products in the metadata file is solely for the purpose of providing specific information, and does not imply recommendation or endorsement. Any downloading and use of these data signifies a user’s agreement to comprehension and compliance of the disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and principal investigators interests.
| Data format: | JPEG (version Unknown) |
|---|---|
| Network links: |
<http://www.brownmarsh.net> |
None
R. Scott Kemmerer
U.S. Geological Survey/NWRC-JWCS
Biologist
700 Cajundome Blvd
Lafayette, LA 70506
USA
337-266-8669 (voice)
337-266-8592 (FAX)
scott_kemmerer@usgs.gov
- Hours_of_Service: 8:00 am to 4:00 pm CST, Monday thru Friday