2019 USGS-NOAA Multibeam Bathymetry Completed
Multibeam bathymetric surveys conducted offshore of Oregon and northern California in 2019, a USGS-NOAA partnership
These surveys are part of the USGS project, “Cascadia Subduction Zone Marine Geohazards.”
Objectives
Fill in critical baseline bathymetric mapping gaps along the mid- to upper-slope
Participants
USGS scientists Pete Dartnell, Jamie Conrad (Principal Investigators)
Partners
National Oceanic and Atmospheric Administration’s (NOAA) Office of Coast Survey (OCS), Expanding Pacific Research and Exploration of Submerged Systems (EXPRESS)
Platform Used
NOAA Ship Fairweather (Figure 1)
Data Collected
EM710 multibeam bathymetry, backscatter, water column data, magnetometer
Highlights
- ~9,500 km2 of multibeam bathymetry collected since 2018 along the Cascadia margin
- These data have provided critical baseline data for 10+ offshore research cruises
- We imaged a number of unique seafloor features offshore OR and northern CA, including: a series of cracks in the seafloor and a possible mud volcano (Figure 2)
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
This survey is part of the USGS project, “Cascadia Subduction Zone Marine Geohazards.”
Cascadia Subduction Zone Marine Geohazards
EXPRESS: Expanding Pacific Research and Exploration of Submerged Systems
Multibeam bathymetric surveys conducted offshore of Oregon and northern California in 2019, a USGS-NOAA partnership
These surveys are part of the USGS project, “Cascadia Subduction Zone Marine Geohazards.”
Objectives
Fill in critical baseline bathymetric mapping gaps along the mid- to upper-slope
Participants
USGS scientists Pete Dartnell, Jamie Conrad (Principal Investigators)
Partners
National Oceanic and Atmospheric Administration’s (NOAA) Office of Coast Survey (OCS), Expanding Pacific Research and Exploration of Submerged Systems (EXPRESS)
Platform Used
NOAA Ship Fairweather (Figure 1)
Data Collected
EM710 multibeam bathymetry, backscatter, water column data, magnetometer
Highlights
- ~9,500 km2 of multibeam bathymetry collected since 2018 along the Cascadia margin
- These data have provided critical baseline data for 10+ offshore research cruises
- We imaged a number of unique seafloor features offshore OR and northern CA, including: a series of cracks in the seafloor and a possible mud volcano (Figure 2)
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
This survey is part of the USGS project, “Cascadia Subduction Zone Marine Geohazards.”