Halley, Robert, 2001, Florida Bay Salinity Data.Online Links:
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.0001. Longitudes are given to the nearest 0.0001. Latitude and longitude values are specified in Decimal degrees.
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.
The flattening of the ellipsoid used is 1/298.257.
Salinity data was collected by R. Halley, K. Ludwig, Kim Yates, Jason Greenwood, Yucong Tuo, Rita Byrd, Hilary Stockton, Heather Mounts, K. Geraghty, B. Remick, R. Peterson, M. Moyle, L. Roulier, D. Wiese, B, Zalew, B.J Reynolds, Nathan Smiley, Chris Dufore, and Nancy DeWitt. Additional data was provided by Everglades National Park, and the South Florida Water Management District.
727 803-8747 ext 3020 (voice)
727 803-2030 (FAX)
rhalley@usgs.gov
Recent algal blooms and seagrass mortality have raised concerns about the water quality of Florida Bay, particularly its nutrient content (nitrogen and phosphorous), hypersalinity, and turbidity. Water quality is closely tied to sediment transport processes because resuspension of sediments increases turbidity, releases stored nutrients, and facilitates sediment export to the reef tract.The objective of this research is to provide a better understanding of how and when sediments within Florida Bay are resuspended and deposited, to define the spatial distribution of the potential for resuspension, to delineate patterns of potential bathymetric change, and to predict the impacts of storms or seagrass die-off on bathymetry and circulation within the bay. By combining these results with the findings of other research being conducted in Florida Bay, we hope to quantify sediment export from the bay, better define the nutrient input during resuspension events, and assist in modeling circulation and water quality. Results will enable long-term sediment deposition and erosion in various regions of the bay to be integrated with data on the anticipated sea-level rise to predict future water depths and volumes. Results from this project, together with established sediment production rates, will provide the basis for a sediment budget for Florida Bay.
During the summer and fall of 1996, the USGS developed a digital measuring system so that subsequent surveys collected several thousand surface measurements. Due to the new digital system, the USGS no longer uses the South Florida Water Management District data nor the Everglades National Park data. Bottom salinity surveys were discontinued after December 1996.
Mention of specific software or hardware products does not constitute an endorsement by the U.S. Geological Survey.
Person who carried out this activity:
727 803-8747 ext 3020 (voice)
727 803-2030 (FAX)
rhalley@usgs.gov
Boscence, D., 1989, Biogenic carbonate production in Florida Bay: Bulletin of Marine Science 44(1): 419-433, University of Florida Press, Coral Gables, FL.
Frankignoulle, M., 1988, Field Measurements of air-sea CO2 exchange: Limnology and Oceanography 33(3):313-322, American Society of Limnology and Oceanography, Washington, D.C..
Millero, F. J., 1979, The thermodynamics of the carbonate system in seawater: Geochimica et Cosmochimica Acta 43:1651-1661, Geochemical Society (Elsevier Science Ltd.), Oxon, United Kingdom.
Smith, S. V. Key, G. S., 1975, 1975 Carbon dioxide and metabolism in marine environments: Limnology and Oceanography 20:493-495, American Society of Limnology and Oceanography, Washington, DC.
Stockman, K. W. Ginsburg, R. N., Shinn, E. , 1967, The production of lime mud by algae in South Florida: Journal of Sedimentary Petrology 37(2):633-648, S E P M Society for Sedimentary Geology, Tulsa, OK.
Sugiura, Y. Ibert, E. R., Hood, D. W., 1963, Mass transfer of carbon dioxide across sea surfaces: Journal of Marine Research 21(1):11-24, Sears Foundation for Marine Research, New Haven, CT.
Wanninkhof, R., 1992, Relationship between wind speed and gas exchange over the ocean: Journal of Geophysical Research 97:7373-7382, American Geophysical Union, Washington, DC.
Barnes, D. J., 1983, Profiling coral reef productivity and calcification using pH and oxygen electrodes: Journal of Experimental Marine Biology and Ecology 66:149-161, Elsevier Science BV, Amsterdam, Netherlands.
Barnes, D. J. Devereux, M. J., 1984, Productivity and calcification on a coral reef: a survey using pH and oxygen electrode techniques: Journal of Experimental Marine Biology and Ecology 79:213-231, Elsevier Science BV, Amsterdam, Netherlands.
Frankignoulle, M. Disteche, A., 1984, CO2 chemistry in the water column above a Posidonia seagrass bed and related air-sea exchanges: Oceanologica Acta 7(2):209-219, Institute Franceis de Recherche pour l'Exploitation de la Mer, Paris, France.
Gattuso, J. P. Pichon, M., Delesalle, B., , 1993, Community metabolism and air-sea CO2 fluxes in a coral reef ecosystem (Moorea, French Polynesia): Marine Ecology Progress Series 96:259-267, Inter-Research, Oldendorf, Germany.
Kayanne, H. Suzuki, A., Saito, H., 1995, Diurnal changes in the partial pressure of carbon dioxide in coral reef water: Science 269:214-216, American Association for the Advancement of Science, Washington, DC.
Smith, S. V., 1973, Carbon dioxide dynamics: a record of organic carbon production, respiration, and calcification in the Eniwetok reef flat community: Limnology and Oceanography 18(1):106-120, American Society of Limnology and Oceanography, Washington, DC.
Local information was recorded in the Bay using a military style GPS unit - Rockwell Precision Lightweight GPS Receiver PLGR+96 with a precision of +/- 10m.
Surface salinity data are available for November, 1994; January, April, June, August, October, and December, 1995; February, April, June, August, October, and December, 1996; January, April, June, August, October, and December, 1997; and February, April, May, August, October, and December, 1998; February, April, June, and August, 1999; December 2000; and April, June, August, and November 2001. Data from November 1994 through August 1997 include the point ID, date, salinity in ppt, and the longitude and latitude of the point in decimal degrees. From October 1997 through August 1999, the time of data collection is also included. From February 1998 through August 1999 water temperature is included. The data for December 2000 contain on the ID, latitude and longitude and the salinity value. The data for 2001 contain the ID, latitude, longitude, salinity, conductivity, and water temperature.
Bottom salinity data is available for November 1994; January, April, June, August, October, and December of 1995; and February, April, June, August, October, and December of 1996. Bottom salinity data collection ceased in December 1996. The data contain the ID, date, salinity value,and longitude and latitude of the collection point.
The salinity data were gathered by USGS with additional data provided by Everglades National Park (ENP) and the South Florida Water Management District (SFWMD) from 1994 through 1997. The files for 1998-2001 contain only data collected by the USGS.
Are there legal restrictions on access or use of the data?
- Access_Constraints: none
- Use_Constraints: none
727 803-8747 ext 3028 (voice)
727 803-2030 (FAX)
hhenkel@usgs.gov
Florida Bay salinity data
The data have no implied or explicit guarantees
| Data format: | Each file contains the salinity data for a specific date in format ASCII Size: 1 |
|---|---|
| Network links: |
<http://sofia.usgs.gov/projects/circulation/data/sal_maps/index.html> |
727 803-8747 ext 3028 (voice)
727 803-2030 (FAX)
sofia-metadata@usgs.gov
U.S. Department of the Interior, U.S. Geological Survey
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Henkel - Webmaster
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