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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2018-043-FA

Other ID: none

Status: Completed

Organization(s): USGS, Woods Hole Coastal and Marine Science Center

Funding Program(s): Other (Other)

Principal Investigator(s): Walter Barnhardt

Affiliate Investigator(s):

Information Specialist(s): Brian Andrews

Data Type(s): Sonar: Sound Velocity, Sonar: Multibeam, Seismics: Sub Bottom Profiler, Seismics: Boomer, Sampling: Geology, Location-Elevation: Navigation

Scientific Purpose/Goals: To collect baseline geophysical data on the distribution and thickness of reworked mine tailings on the lake bottom near Buffalo Reef.


Start Port/Location: Houghton, MI

End Port/Location: Houghton, MI

Start Date: 2018-09-13

End Date: 2018-09-27

Equipment Used: Grab sampler - Van Veen , HYPACK, Boomer, Sensor - SVP, Other, Benthos AQ-4 10-element hydrophone streamer, EdgeTech 424 chirp sub-bottom profiler, Reson T20-P

Information to be Derived: bathymetry, backscatter, modern sediment thickness, depth to basement (i.e., top of Pleistocene)

Summary of Activity and Data Gathered: Covered approximately 309 square kilometers of Reson T20P (dual head) bathymetry and backscatter along 387 kilometers of survey lines. Collected (first) 3 days of Boomer data along 115 kms of tracklines. Collected 4 days of 424 Chirp data along 272 kms of tracklines. Collected 17 sediment samples on last day (Sept 26th)

Staff: Other , Alexander Nichols, Barry Irwin, David Foster, Walter Barnhardt, Brian Andrews

Affiliate Staff:



Big Traverse Bay, Lake Superior, Michigan, United States

North: 47.22502 South: 47.147484 West: -88.248604 East: -88.120621


photo of Rafael


Andrews, B.D., Barnhardt, W.W., Foster, D.S., Irwin, B.J., and Nichols, A.R., 2020, High-resolution geophysical data collected in the vicinity of Buffalo Reef, Michigan, within Lake Superior, U.S. Geological Survey Field Activity 2018-043-FA: U.S. Geological Survey data release,


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Sensor - SVP --- Sound Velocity
Reson T20-P --- Water column reflectivity
Benthos AQ-4 10-element hydrophone streamer --- Air Gun / Water Gun
Boomer --- Boomer
EdgeTech 424 chirp sub-bottom profiler --- Sub Bottom Profiler
Other --- --- ---
Grab sampler - Van Veen --- Geology
HYPACK --- Navigation

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