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Continuous resistivity profiling (CRP) in the Cedar River Floodplain, Cedar Rapids, Iowa, 2015

Metadata Updated: January 20, 2026

In April 2015, approximately 19 miles of continuous resistivity profiling (CRP) surveys were collected on the Cedar River in Cedar Rapids, Iowa. The CRP method was used to characterize the resistivity of the water column and subbottom materials. Five CRP profiles were collected concurrently with the continuous seismic methods. For this investigation, 11 electrodes spaced 10 m apart and mounted in a streamer were towed behind the boat and data were collected using the dipole-dipole array type. The first two electrodes, closest to the boat, were used to inject current into the water and subbottom materials, and eight electrical potential measurements were made using the remaining nine electrodes. With this system, a complete suite of measurements is collected every 2.8 seconds. Because the boat is moving at a slow rate of speed, a complete measurement is taken while the boat has moved about 3-5 m. In general, voltage measurements taken with larger electrode spacings extend deeper into the subsurface. The exact depth and resistivity are determined through a process of inversion. The raw CRP data are shared in this data release.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date January 11, 2026
Metadata Updated Date January 20, 2026

Metadata Source

Harvested from DOI USGS DCAT-US

Additional Metadata

Resource Type Dataset
Metadata Created Date January 11, 2026
Metadata Updated Date January 20, 2026
Publisher U.S. Geological Survey
Maintainer
Identifier http://datainventory.doi.gov/id/dataset/USGS_5d0295d0e4b05cc71caf1146
Data Last Modified 2020-08-13T00:00:00Z
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://ddi.doi.gov/usgs-data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Datagov Dedupe Retained 20260120105240
Harvest Object Id 4ab4831b-863d-44d9-980e-0845b913be53
Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
Harvest Source Title DOI USGS DCAT-US
Metadata Type geospatial
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Source Datajson Identifier True
Source Hash 07f988d9436999abd97e2c329af148af9a23b343446b0777b83e93b03a347f6d
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -91.80633, 41.97710, -91.80633, 42.06918, -91.64703, 42.06918, -91.64703, 41.97710, -91.80633, 41.97710}

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