X-Radiographs Data
Entry ID: USGS_SOFIA_x-radio_data

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Summary
Abstract: The x-radiographs of Florida Bay cores were used to examine the internal sediment structure of sediment contained in a core and assess whether the sediment was mixed.

In order to manage an ecosystem, it is imperative to define the rate at which ecologic, physical and chemical changes have occurred. The lack of historical records documenting ecological changes dictates that other methods are used to measure the rate of change. A common method of "dating" change is to measure the decay of naturally occurring radioactive nuclides.
Related URL
Description: Data may be downloaded from the SOFIA website
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Geographic Coverage
Spatial coordinates   
  N: 25.21   S: 24.9   E: -80.4   W: -81.1

Data Set Citation
Dataset Originator/Creator: Charles W. Holmes (retired) Debra Willard
Dataset Title: X-Radiographs Data
Dataset Release Date: 2002
Data Presentation Form: digital images
Online Resource: http://sofia.usgs.gov/exchange/holmes/holmesxradio.html
Temporal Coverage
Start Date: 1994-01-01
Stop Date: 1997-12-31
Quality X-radiographs were made of cores from Rabbit Key, Cluett Key Pond, Whipray Basin, Bob Allen Key, Rankin Bight, Lake Ingraham, north and south Russell Bank, Johnson Key, Porjoe Key, Pass Key, Crocodile Point, Trout Creek Spiit, and Little Madeira Bay to assess sediment disturbance over the length of the cores. The x-radiographs were made in a hospital using their x-ray equipment.
Access Constraints None
Use Constraints None
Data Set Progress
COMPLETE
Originating Center
Data Center
SOUTH FLORIDA INFORMATION ACCESS, SOUTHEAST ECOLOGICAL SCIENCE CENTER, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF THE INTERIOR Supplemental Info
Data Center URL: http://sofia.usgs.gov/

Data Center Personnel
Name: HEATHER S. HENKEL
Phone: 727-502-8028
Fax: 727-502-8182
Email: hhenkel at usgs.gov
Contact Address:
U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
600 Fourth St. South
City: St. Petersburg
Province or State: FL
Postal Code: 33701
Country: USA
Distribution
Distribution Size: 0.26
Distribution Format: JPEG
Fees: None
Personnel
Role: TECHNICAL CONTACT
Phone: (703) 648-5320
Fax: (703) 648-6953
Email: dwillard at geochange.er.usgs.gov
Email: dwillard at mailrvag2.er.usgs.gov
Contact Address:
MS 926A National Center
U.S. Geological Survey
City: Reston
Province or State: VA
Postal Code: 20192
Country: USA
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Publications/References
Gough, L. P., Kotra, R. K.; Holmes, C. W.; Orem, W. H.; Hageman, P. L.; Briggs, P. H.; Meier, A. L.; Brown, Z. A. 2000, Regional Geochemistry of Metals in Organic-Rich Sediments, Sawgrass, and Surface Water from Taylor Slough, Florida, USGS Open-File Report, 00-327, Reston, VA, U.S. Geological Survey
http://sofia.usgs.gov/publications/ofr/00-327/
Creation and Review Dates
DIF Creation Date: 2007-10-31
Last DIF Revision Date: 2009-02-04
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