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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2021-643-FA

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AKA: none

Other ID: 2021 Fairweather EXPRESS Cascadia mapping; H13549

Status: Completed

Organization(s): USGS, Pacific Coastal and Marine Science Center, National Oceanic and Atmospheric Administration, Bureau of Ocean Energy Management

Funding Program(s): Other (Other), Coastal and marine earthquake, tsunami, and landslide active margin field studies (ZP00EQV)

Principal Investigator(s): Janet Watt, Jenna Hill

Affiliate Investigator(s):

Information Specialist(s): Peter Dartnell

Data Type(s): Sonar: Water column reflectivity, Sonar: Multibeam, Electro-Magnetic: Magnetics

Scientific Purpose/Goals: Collect multibeam bathymetry, acoustic-backscatter, water-column backscatter, and magnetics data along the slope of the Cascadia margin to fill in gaps in hi-resolution multibeam imagery for subduction zone hazard characterization

Vehicle(s): None

Start Port/Location: Port Hueneme, CA

End Port/Location: Newport, OR

Start Date: 2021-10-20

End Date: 2021-11-09

Equipment Used: Other, multibeam, magnetics

Information to be Derived: bathymetry, seafloor backscatter, water-column backscatter

Summary of Activity and Data Gathered: Fiarweather successfully mapped remaining data gaps within Eel Basin and along the shelf edge. No marine magnetic data were collected, only multibeam bathymetry, backscatter, and water column data. Data will be released through NEIC.


Affiliate Staff:

Notes: NOAA is the official data repository for this cruise. NOAA cruise ID is H13549.


Pacific Ocean, Northern California, Oregon, United States

North: 45.92336372 South: 40.38212062 West: -125.39842129 East: -123.93350601


photo of Fairweather


Conrad, J.E., and Rudebusch, J.A., 2023, Methane seep locations derived from water-column acoustic backscatter data collected along Cascadia margin offshore Oregon and Northern California, 2018-2021: U.S. Geological Survey data release,


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Other --- --- ---
multibeam --- Multibeam
magnetics --- Magnetics

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