Geophysical data from the unnamed lake at the National Crude Oil Spill Fate and Natural Attenuation Research Site, Bemidji, MN (ver. 2.0, June 2020)
Dates
Start Date
2018-06-25
End Date
2019-06-29
Publication Date
2019-03-13
Last Revision
2020-06-05
Citation
Terry, N., Bekins, B.A., Trost, J.J., and Day-Lewis, F.D., 2020, Geophysical data from the unnamed lake at the National Crude Oil Spill Fate and Natural Attenuation Research Site, Bemidji, MN (ver. 2.0, June 2020): U.S. Geological Survey data release, https://doi.org/10.5066/P9BLZPJT.
Summary
This dataset has been archived; it has been superseded by version 3.0 (May 2022) which can be found at https://doi.org/10.5066/P9BLZPJT. The National Crude Oil Spill Fate and Natural Attenuation Research Site is located near Bemidji, MN, USA. A high pressure oil pipeline ruptured in 1979 releasing ~1.7 million liters of light crude oil, which sprayed over an area of ~6500 square meters and collected in topographic depressions. Approximately 75% of the spilled oil was recovered. Much of the remainder reached the water table, where it is distributed into three residual oil bodies (the north, middle, and south oil pools). Groundwater flows east-northeast toward a small lake roughly 300 m downgradient from the original spill site. Secondary [...]
Summary
This dataset has been archived; it has been superseded by version 3.0 (May 2022) which can be found at https://doi.org/10.5066/P9BLZPJT.
The National Crude Oil Spill Fate and Natural Attenuation Research Site is located near Bemidji, MN, USA. A high pressure oil pipeline ruptured in 1979 releasing ~1.7 million liters of light crude oil, which sprayed over an area of ~6500 square meters and collected in topographic depressions. Approximately 75% of the spilled oil was recovered. Much of the remainder reached the water table, where it is distributed into three residual oil bodies (the north, middle, and south oil pools). Groundwater flows east-northeast toward a small lake roughly 300 m downgradient from the original spill site. Secondary reactions of sediments with byproducts from anaerobic degradation of the oil plumes cause increases in total dissolved solids, which are transported in groundwater and raise the electrical conductivity of the groundwater above background levels, presenting a potential monitoring target for electromagnetic induction methods. This data release contains electromagnetic induction (EMI), ground penetrating radar (GPR), and specific conductance (SpC) data collected over and within the lake where it is believed high SpC groundwater associated with degradation of the oil plume is discharging. Direct measurements of lake sediment specfic conductance and temperature, as well as pore water specific conductance, are also included. The current release (ver. 2.0) contains data from 2018 and 2019. The original data release contained only data from 2018. The interested user can contact Neil Terry (nterry@usgs.gov) or the USGS Hydrogeophysics Branch to obtain a copy of the original release.
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Metadata_main.xml Original FGDC Metadata
View
11.82 KB
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GPR.zip
791.92 MB
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DirectSampling.zip
113.45 KB
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FDEM.zip
26.26 MB
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README.txt
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thumb.JPG
455.96 KB
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revision_history.txt
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Purpose
The waterborne electromagnetic induction data and supporting datasets collected at Bemidji were mainly used to map where an elevated specific conductance plume, associated with biodegradation of oil at the National Crude Oil Spill Fate and Natural Attenuation Research Site, is discharging to surface water.