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projects > geochronology
in the south florida ecosystem and associated ecosystem programs
Summary
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The objectives of the project is to measure the distribution of short- lived radionuclides to provide a temporal
component to the processes at work within the Ecosystem.
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Over the past three decades there has been a dramatic increase in the volume
and range of research on recent sediments. Much of this research effort has
been aimed at understand short-lived sedimentologic processes and the result
of anthropogenic manipulation of natural processes. In south Florida,
ecological changes have alarmed all who are concerned with maintaining the
south Florida way of life. In order to understand what has influenced the
natural processes that have caused these changes, it is necessary to
understand the processes at work within the system and to determine the rates
at which these changes are occurring. The lack of historical records
documenting changes dictates that other methods be used to measure "rates of
change." A common method is to use the decay of naturally occurring
radioactive nuclides. The usefulness of any radioactive nuclides requires
certain conditions be met. These conditions are 1. the chemistry of the
nuclide (element) is known; 2. The nuclide onces incorporated into the
substrate changes only by decay, and 3. in order to be useful, it is
relatively easy to measure. The objectives of the project is to measure the
distribution of short-lived radionuclides to provide a temporal component
to the processes at work within the Ecosystem.
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