Field Activity Data

Continuous resistivity profiling data and associated data from Greenwich Bay, Rhode Island collected in 2009, U.S. Geological Survey Field Activity 2009-021-FA

  • Field Activity Number: 2009-021-FA
  • Version: 1
  • Area of Operation: Greenwich Bay, Rhode Island
  • Dates: 2009
  • Chief Scientist: John Bratton
  • Contact:VeeAnn Cross

  • Suggested Citation: 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.

Abstract: As part of a larger investigation to understand groundwater-surface water interactions in Greenwich Bay, Rhode Island, a geophysical survey was conducted from a small research boat on 14-15 May 2009. The specific research objective was to gain an improved understanding of the role of direct groundwater discharge in delivery of excess nitrogen to the bay, which may have contributed to the development of low-oxygen conditions in waters of the bay and associated fish kills. Data collected in this survey included digital navigation information, continuous resistivity profiling (CRP) data, and point salinity measurements. The CRP method is a survey and data processing approach that is sensitive to differences in electrical properties of surface water and underlying porewater in sediments that have contrasting salinities. During the survey, Greenwich Bay salinity was approximately 27 ppm, so surface water would be expected to have low electrical resistivity (high conductivity), and any areas of active groundwater discharge from less salty aquifer sources would yield relatively higher resistivity values.

Filename and Description

Preview

Metadata

Download

Chemistry

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).

browse graphic HTML
TEXT
XML
2009-021-FA_YSIdata.zip

Continuous Resistivity Profiling

2009-021-FA_may14_rawres:
Raw CRP data collected by the USGS on May 14, 2009 in Greenwich Bay, Rhode Island.

no browse graphic HTML
TEXT
XML
2009-021-FA_may14_rawres.zip

2009-021-FA_may15_rawres:
Raw CRP data collected by the USGS on May 15, 2009 in Greenwich Bay, Rhode Island.

no browse graphic HTML
TEXT
XML
2009-021-FA_may15_rawres.zip

2009-021-FA_may14_procresis:
Processed CRP data collected on May 14, 2009 in Greenwich Bay, Rhode Island.

browse graphic HTML
TEXT
XML
2009-021-FA_may14_procresis.zip

2009-021-FA_may15_procresis:
Processed CRP data collected on May 15, 2009 in Greenwich Bay, Rhode Island.

browse graphic HTML
TEXT
XML
2009-021-FA_may15_procresis.zip

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).

browse graphic HTML
TEXT
XML
2009-021-FA_mrgmay14_resbsed.zip

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).

browse graphic HTML
TEXT
XML
2009-021-FA_mrgmay15_resbsed.zip

2009-021-FA_res2dinv:
RES2DINV formatted CRP data from Greenwich Bay, Rhode Island.

no browse graphic HTML
TEXT
XML
2009-021-FA_res2dinv.zip

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).

browse graphic HTML
TEXT
XML
2009-021-FA_res_lines.zip

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).

browse graphic HTML
TEXT
XML
2009-021-FA_res_pntnav.zip

Logs

2009-021-FA_logs:
PDF file of the data acquisition logs for USGS Field Activity 2009-021-FA.

no browse graphic HTML
TEXT
XML
2009-021-FA_logs.zip