Other ID: none
Status: Completed
Organization(s): USGS, St. Petersburg Coastal and Marine Science Center
Funding Program(s):
Principal Investigator(s): Christopher Reich
Affiliate Investigator(s):
Information Specialist(s): Jordan Sanford
Data Type(s): Electro-Magnetic: Resistivity, Environmental Data: Conductivity, Imagery: Photo, Location-Elevation: Navigation, Location-Elevation: Profiles
Scientific Purpose/Goals: The objective of this contract is to obtain HRMSRP and DC Resistivity profiles as applicable to the sites designated as Sentinel Lakes to characterize the subsurface of each water body. Of special concern is identifying discontinuities in the confining units between surface water and groundwater systems.
Vehicle(s):
Start Port/Location: Johns Lake, FL
End Port/Location: Lake Colby, FL
Start Date: 2008-04-07
End Date: 2008-04-18
Equipment Used: Continuous Resistivity Profiler (CRP), Electrical Resistivity Tomography (ERT), YSI 556, Camera, Digital, Hand Held, GPS
Information to be Derived: Resistivity techniques will be utilized to obtain information on geologic framework and composition in lakes identified in the project.
Summary of Activity and Data Gathered: CRP surveys were conducted in 8 lakes: Avalon, Cherry, Helen, Hiawassee, Johns, Louisa, Saunders and Sylvan. Land-based resistivity surveys were conducted in 3 lakes: Colby, Crooked, and Prevatt.
Staff: Jordan Sanford
Affiliate Staff:
Notes: Equipment: Advanced Geosciences, Inc. (AGI) Supersting R8/IP,100-m CRP cable (10-m electrode spacing) and Lowrance DGPS WAAS navigation for CPR system; AGI Supersting R8/IP and 112-m-long cable (2-m electrode spacing) for stationary DC Resistivity; Yellow Springs Instrument (YSI) 556MPS.
Location:
Central Florida Lakes
| Boundaries | |||
|---|---|---|---|
| North: 27.93982029 | South: 25.77954435 | West: -82.2848 | East: -79.82709257 |
Platform(s):
Jon Boat |
Reich, C., Flocks, J., Davis, J., 2012, Geophysical investigation of sentinel lakes in Lake, Seminole, Orange, and Volusia Counties, Florida: U.S. Geological Survey Open-File Report 2012-1201, 52 p., https://doi.org/10.3133/ofr20121201.
| Survey Equipment | Survey Info | Data Type(s) | Data Collected |
|---|---|---|---|
| Continuous Resistivity Profiler (CRP) | --- | Resistivity | 08LCA02-EM-pd-1 (continuous resisitivity profiles) |
| Electrical Resistivity Tomography (ERT) | --- | Resistivity | 08LCA02-EM-pd-1 (land-based resistivity profiles) 08LCA02-EM-rd-2 (Land-based Resistivity Profile data; Prevatt, Crooked, and Colby Lakes) |
| YSI 556 | --- | Conductivity | 08LCA02-EN-rd-1 (YSI field parameters) |
| Camera, Digital, Hand Held | --- | Photo | |
| GPS | --- | Navigation | 08LCA02-NL-pd-1 (shapefile, cont. resistivity) 08LCA02-NL-rd-1 (GPS points, tracklines) 08LCA02-NL-pd-2 (shapefile, land-based resistivity) 08LCA02-EL-rd-1 (Elevation data) |
