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Multibeam trackline data collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior during USGS Field Activity 2021-005-FA using a dual-head Reson T20-P multibeam echosounder (Esri polyline shapefile, Geographic, WGS 84)

Dates

Publication Date
Start Date
2021-08-05
End Date
2021-08-11

Citation

Andrews, B.D., Barnhardt, W.A., Moore, E.M., Nichols, A.R., Ackerman, S.D., and Berube, P.J. 2022, High-resolution geophysical and sample data collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior, U.S. Geological Survey Field Activity 2021-005-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9NJY125.

Summary

In August 2021, the U.S. Geological Survey, in collaboration with the U.S. Army Corps of Engineers, collected high-resolution geophysical data, sediment samples, and bottom imagery to determine the distribution of historical mine tailings on the floor of Lake Superior. Large amounts of waste material from copper mining, locally known as “stamp sands,” were dumped into the lake in the early 20th century, with wide-reaching consequences that have continued into the present. Mapping was focused offshore of the town of Gay on the Keweenaw Peninsula of Michigan, where ongoing erosion and re-deposition of the stamp sands has buried miles of native, white-sand beaches. Stamp sands are also encroaching onto Buffalo Reef, a large area of cobble/boulder [...]

Contacts

Attached Files

Click on title to download individual files attached to this item.

Shapefile: 2021-005-FA_ResonT20P_Tracklines.zip
2021-005-FA_ResonT20P_Tracklines_browse.jpg
“browse image of multibeam echosounder tracklines”
thumbnail 84.54 KB
2021-005-FA_ResonT20P_Tracklines.cpg 5 Bytes
2021-005-FA_ResonT20P_Tracklines.dbf 122.67 KB
2021-005-FA_ResonT20P_Tracklines.prj 145 Bytes
2021-005-FA_ResonT20P_Tracklines.sbn 1.14 KB
2021-005-FA_ResonT20P_Tracklines.sbx 196 Bytes
2021-005-FA_ResonT20P_Tracklines.shp 204.43 KB
2021-005-FA_ResonT20P_Tracklines.shx 948 Bytes

Purpose

The purpose of this polyline shapefile is to provide a geospatial record of the tracklines recorded by the Reson T20-P sonar and to provide the line names and dates in the shapefile attribute table.

Additional Information

Shapefile Extension

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