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salinity patterns in florida bay: a synthesis >
1999 proposal
USGS Geologic Division
IDENTIFYING INFORMATION
Project chief:
Michael B. Robblee
Program(s) Integrated Natural Resource Science Program
Program element(s)/task(s) (show percent distribution if more
than one element/task). If submitting to more than one program, include
element(s)/tasks from each program here:
Element 1; Task 1.7 Aspects of Florida Bay, Florida Keys and the Coral
Reefs
BACKGROUND NARRATIVES
At this time direct salinity observations from within Florida Bay extend
from 1936 to the present. Anecdotal references to salinity conditions within
the Bay are known to exist from as early as 1908 within the scientific
literature. Spatially extensive data are available from the mid-1950ís.
The historic salinity data for the Bay and its immediate environs has been
compiled from all sources into a single database relating each observation
to time and place (Robblee et al, 1989). Since the early 1980ís salinity
has been monitored continuously by Everglades National Park at an increasing
number of stations in the Bay. The ENP database includes related data (e.g.
rainfall, water level, etc.) for Florida Bay and adjacent waters as well
as the Bayís headwaters in the Everglades (Smith, NPS). More recently (since
1994) bimonthly spatially intensive salinity surveys have been conducted
by the US Geological Survey within Florida Bay (Halley, USGS).
This project will combine these data sets and available anecdotal data
into a synthesis of salinity conditions within Florida Bay from 1900. During
the first year these databases will be completed, QA/QC will be performed,
and data entry into a relational database including other relevant physical
data (rainfall, evaporation, flow, etc.) searchable by time, location and
depth will begin. During year two a synthesis of salinity patterns in the
Bay including relationships between salinity and freshwater inflow and
rainfall will be completed using this relational database.
Project objectives and strategy: The objectives of this study
are: 1) to characterize salinity conditions in the Bay using all available
sources of salinity data as well as other relevant data and 2) to provide
researchers with a fully relational database searchable in time and space
to facilitate model development and use, to aid in interpretation of cores,
and to help generate and test hypotheses of salinity-related processes.
Year one of this two-year study will see existing data sets completed,
additional data located, QA/QC performed and documentation developed for
each data set. A relational database, populated by these data sets, will
be initiated. The potential for incorporating the new bathymetry map of
Florida Bay into this relational database will be explored. Also in year
one a library search for appropriate anecdotal information, which can be
interpreted in terms of salinity, will be initiated. The purpose of this
effort is to extend our understanding of salinity conditions in Florida
Bay backward in time to the turn of the century when measurements of salinity
are not available.
During year two the library search and relational database development
will continue with additional data being added as available. The relational
database will first be used to summarize temporal and spatial patterns
of salinity in Florida Bay based on actual data (from approximately 1955).
The review and interpretation of anecdotal information will be used to
extend this summary backward in time to about 1900 if possible. It is anticipated
that the summary of salinity conditions in the Bay prior to about 1955
will be coarse as compared with that based on data available after 1955.
The results of this salinity summary as well as this relational database
will be placed on the South Florida website. In year two an interface will
be developed that allows users to define space/time search parameters for
salinity data. The relational database described here would be in a format
and condition suitable for inclusion within a larger data management program.
Potential impacts and major products: The number of requests
received for salinity data indicate that a dedicated effort should be made
to make this information easily available and, at the same time, provide
a vehicle for simplified analyses. At present, salinity maps and data are
available over the internet but are difficult for users to find. The historical
salinity database is available only by request. A salinity data set for
Florida Bay is of sufficient priority to warrant a separate effort to make
it quickly and efficiently available over the internet. The greatest impact
will be gained if this occurs during the next 18 months. Two products are
expected from this project. The first is a relational database that includes
a website interface to allow individual researchers to tailor their searches
of salinity data in time and space to fit their individual needs. To the
extent possible we will add other parameters to the database that may be
useful to understanding salinity conditions in the Bay such as water depth,
rainfall and runoff. The second product will be a report that characterizes
salinity conditions in the Bay both spatially and temporally. To the extent
possible this characterization will be extended back to the turn of the
century. This report will also include sections relating salinities
in the Bay to rainfall, evaporation and overland flow. The potential for
developing a CD for distribution containing the relational database and
salinity summary will be explored.
Collaborators, clients: Collaborator - At this time collaborators
include DeWitt Smith of
WORK PLAN
Overall:
Several steps need to be completed before synthesis can begin. First
there needs to a determination of which data sets logically can be related
and should be included with salinity. Since most data currently exist as
salinity it is likely that salinity will be used as the unit of measure.
Second, although most of the data has been checked for quality control,
some of the early ENP data (1988-1993) needs to be reviewed for accuracy
and edited. While much of the available data is known, a thorough search
for other data will need to be completed. One meeting of the principals
should take place early in FY 1999 to agree on format issues and the general
approach. Data must be processed to agreed format and entered into an Illustrator
or Oracle database depending on the ultimate location of the server. The
database will provide a web browser connection with an interface constructed
to return tables of spatially and temporally defined data.
Using the web interface, historical and spatial summaries of salinity
will be developed for use in a synthesis circular. The synthesis circular
will be written for the educated layman or manager and outline salinity
history and the major processes controlling salinity in the Bay (rainfall,
runoff, evaporation, circulation and bathymetry). The report will rely
on simple spatial and time-series data sets drawn from the database.
Time line (FY 1999 to project end): List MAJOR tasks and deliverables
by fiscal year and indicate key staff responsible for each.
FY 1999
FY2000
FY2001
Deliverables/products: See above
Outreach activities: A circular summarizing salinity conditions
in Florida Bay written for the educated layman or manager which outlines
the major processes controlling salinity in the Bay (rainfall, runoff,
evaporation, circulation and bathymetry).
Proposersí previous experience in the projectís topic or geographic
area: 15 years of experience in Florida Bay as a researcher for Everglades
National Park, the Biological Survey, and the USGS
PROJECT SUPPORT REQUIREMENTS
Other Required Expertise for Which No Individual has been Identified:
Library search specialist - FY 1999-2000
Major Equipment/Facility Needs: None
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U.S. Department of the Interior, U.S. Geological Survey, Center for Coastal Geology This page is: http://sofia.usgs.gov/proposals/1999/salpatternsp99.html Comments and suggestions? Contact: Heather Henkel - Webmaster Last updated: 11 October, 2002 @ 09:31 PM (KP) |