Other ID: B-21-09-RI
Status: Completed
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Funding Program(s):
Principal Investigator(s): John Bratton
Affiliate Investigator(s): John King, URI-GSO
Information Specialist(s): VeeAnn Atnipp Cross
Data Type(s): Electro-Magnetic: Resistivity, Environmental Data: Conductivity, Environmental Data: Temperature, Location-Elevation: Navigation, Sonar: Single Beam
Scientific Purpose/Goals: Continuous resistivity profiling to map submarine fresh-saline groundwater interface in Greenwich Bay.
Vehicle(s):
Start Port/Location: East Greenwich, RI
End Port/Location: East Greenwich, RI
Start Date: 2009-05-13
End Date: 2009-05-15
Equipment Used: GPS (wh), HYPACK, Echosounder, Resistivity Profiler, YSI multiparameter sonde
Information to be Derived:
Summary of Activity and Data Gathered: May 13, Weds., Worley arrives in PM to set up gear on boat at Norton's Marina, East Greenwich, RI; May 14, Thurs., Worley, Bratton, King, Miller survey with 50-m CRP streamer in Greenwich Cove, Apponaug Cove, around perimeter of Greenwich Bay, and several N-S crossings in western half, King put off at marina at noon, VeeAnn Cross checks AM data remotely back in Woods Hole -- looks OK; May 15, same crew (incl. King) survey open parts of Greenwich Bay with 100-m streamer, periodic salinity measurements with YSI 30 (all 25.5-27.8 ppt), run long W-E lines, then out mouth to Patience Island, then SW to mouth of Potowomut Cove, then N back to Greenwich Bay, zigzagging N-S-N over eastern half of bay, back at pier at 1530.
Staff: John Bratton, Charles Worley
Affiliate Staff:
John King
URI
co-chief scientist; URI students Emily Shumchenia (shore/marina logistics) and Russ Miller (boat driver)
Notes: Original Center People field contained: John Bratton, co-chief scientist; Chuck Worley, marine resistivity tech.
Project = Direct Groundwater - Chesapeake, Direct Groundwater - Chesapeake
Location:
Greenwich Bay, Narragansett Bay, Rhode Island, United States, North America, North Atlantic;
| Boundaries | |||
|---|---|---|---|
| North: 41.7 | South: 41.64 | West: -71.46 | East: -71.38 |
Platform(s):
Small pontoon boat |
Bratton, J.F., and Cross, V.A., 2018, Continuous resistivity profiling data and associated data from Greenwich Bay, Rhode Island collected in 2009, U.S. Geological Survey Field Activity 2009-021-FA: U.S. Geological Survey data release, https://doi.org/10.5066/F7DR2TSX.
| Title | Survey Equipment | Description |
|---|---|---|
| Cruise log | (document not focused on specific equipment) | PDF file of the data acquisition logs for USGS Field Activity 2009-021-FA. |
| Survey Equipment | Survey Info | Data Type(s) | Data Collected |
|---|---|---|---|
| GPS (wh) | --- | Navigation | |
| HYPACK | The navigation system used was a Lowrance 480M with an LGC-2000 Global Positioning System (GPS) antenna. The antenna was located 1.5 meters forward of the resistivity streamer tow point and directly above the fathometer transducer. The data are part of the resistivity data. | Navigation | 2009-021-FA_res_lines (Trackline of the boat's XY position during the collection of CRP data in Greenwich Bay, Rhode Island in May 2009 (Geographic WGS 84, polyline shapefile format).) |
| Echosounder | Bathymetry values were acquired by the 200 kHz Lowrance fathometer. The fathometer was mounted on the starboard side of the University of Rhode Island pontoon boat, directly below the GPS antenna. The data are part of the resisitivity data. | Single Beam | 2009-021-FA_res_pntnav (The boat's XY position, water depth, and water temperature during the collection of CRP data in Greenwich Bay, Rhode Island in May 2009 (Geographic WGS 84, point shapefile and CSV format).) |
| Resistivity Profiler | AGI SuperSting marine system. Field activity used both a 50m streamer and a 100-m streamer. The 50-m streamer has an 11 electrode array with electrodes spaced 5 meters apart. The 100-m streamer has an 11 electrode array with electrodes spaced 10 meters apart. | Resistivity | 2009-021-FA_may14_rawres (Raw CRP data collected by the USGS on May 14, 2009 in Greenwich Bay, Rhode Island.) 2009-021-FA_may15_rawres (Raw CRP data collected by the USGS on May 15, 2009 in Greenwich Bay, Rhode Island.) 2009-021-FA_may14_procresis (Processed CRP data collected on May 14, 2009 in Greenwich Bay, Rhode Island.) 2009-021-FA_may15_procresis (Processed CRP data collected on May 15, 2009 in Greenwich Bay, Rhode Island.) 2009-021-FA_mrgmay14_resbsed (Processed CRP data that occurs at the sediment water interface or below collected in Greenwich Bay, Rhode Island on May 14, 2009 (Geographic WGS 84, point shapefile and CSV formats).) 2009-021-FA_mrgmay15_resbsed (Processed CRP data that occurs at the sediment water interface or below collected in Greenwich Bay, Rhode Island on May 15, 2009 (Geographic WGS 84, point shapefile and CSV formats).) 2009-021-FA_res2dinv (RES2DINV formatted CRP data from Greenwich Bay, Rhode Island.) |
| YSI multiparameter sonde | The YSI 30 is a handheld system. The unit was placed in the water and measurements taken at 10 locations in Greenwich Bay. The measurements are surface water temperature, salinity, and specific conductance measurements. The specific conductance measurements were temperature-compensated. | Conductivity Dissolved Oxygen ORP pH Temperature | 2009-021-FA_YSIdata (Locations and YSI 30 sensor data used to determine water conductivity values (Geographic WGS 84, point shapefile, XLSX, and CSV formats).) |
