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The electrical conductivity of the earth is used to help infer lithological and pore fluid properties. Various geophysical methods can provide estimates of the distribution of below ground electrical conductivity, with each method having certain limitations. This data release presents raw and processed results from hand-caried frequency domain electromagnetic induction imaging (EMI) data collected from June 27-28 along Blacktail Creek near Williston, North Dakota. Data were primarily collected by walking in the creek or along the riparian zones with the GEM-2 instrument (Geophex, Ltd.) at approximately 0.5 m off the ground in horizontal coplanar (ski flat) mode.
Tags: Groundwater,
North Dakota,
Surface Water,
Williston,
electromagnetic surveying, All tags...
environment,
geophysics,
geoscientific information,
hydrogeology,
hydrology,
inland waters, Fewer tags
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The extraction of unconventional oil and gas (UOG) resources often produces highly saline waste waters, which can be released to the river corridor environment during spills and pipe leakage. In North Dakota, USA more than 8,000 spills were recorded from 2008-2015, and more than half of those spills were related to pipelines. Data collected for this study were related to UOG wastewater leakage from a pipeline into a creek in the Williston Basin, North Dakota discovered on the January 6th, 2015. Although the spill was followed by extensive remediation efforts, we conducted geophysical surveys in June 2017 to assess the potential for waste water retention along the Blacktail Creek corridor as part of a larger evaluation...
Tags: Geoscientific information,
Groundwater,
Inland Waters,
North Dakota,
Surface Water, All tags...
Thermal,
USGS Science Data Catalog (SDC),
Williston,
electrical resistivity imaging,
electromagnetic surveying,
environment,
geophysics,
hydrogeology,
hydrology, Fewer tags
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In June 2017, U.S. Geological Survey (USGS) collected geophysical measurements to help map variations in electrical properties to infer shallow flowpaths and storage zones influenced by residual spilled unconventional oil and gas (UOG). Blacktail Creek ERT site 1, BTC_Site1, is located near the area of wastewater leakage. Blacktail Creek ERT site 2 is located southeast of BTC_Site1 on the north bank of the creek. One ERT survey profile was collected at each site, each including dipole-dipole and Wenner-Schlumberger configurations. For each survey a total of 56 electrodes spaced 1.0 meter (m) apart were used. During the ERT measurement, current is injected through two current electrodes and voltage is measured sequentially...
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