The USGS California Deepwater Investigations and Groundtruthing, or Cal DIG, science crew aboard research vessel Bold Horizon on San Francisco Bay.
Guy R Cochrane, PhD
I have a background in marine geophysics which I employ for benthic habitat mapping in the Eastern Pacific Ocean
Professional Experience
Seafloor Mapping
Benthic Habitat Mapping
Coastal and Marine Ecological Classification Standard working group (CMECS)
Expanding Pacific Research and Exploration of Submerged Systems (EXPRESS)
Coastal and Marine Geology Data Management Leadership Team
Education and Certifications
BS Geology and Oceanography Humboldt State University
MS Geo-Oceanography University of Washington
PhD Earth Sciences University of California, Santa Cruz
Affiliations and Memberships*
GeoHab Board of Directors (geohab.org)
Science and Products
Exploring Biodiversity of the Deep Hawaiian Pacific Ocean with Seafloor Mapping and eDNA Technologies
Marine Geomorphology, Evolution, and Habitats
California Seafloor Mapping Program
California Seafloor Mapping Program data collection
California Seafloor Mapping Program map-set production
California Seafloor Mapping Program applications
Bathymetry, backscatter intensity, seismic reflection, and benthic habitat data offshore of Arcata, California
Bathymetry, backscatter intensity, seismic reflection, and benthic habitat data offshore of Eureka, California
Bathymetry, backscatter intensity, and benthic habitat offshore of Cape Mendocino, California
Bathymetry, backscatter intensity, and benthic habitat offshore of the Eel River, California
Multibeam echo sounder, video observation, and derived benthic habitat data offshore of Tacoma, Washington
Bathymetry and topography, video observation, and derived benthic habitat data offshore of Burien, Washington
Bathymetry, backscatter intensity, and benthic habitat offshore of Point Buchon, California (ver. 1.1, January 2024)
Bathymetry, backscatter intensity, and benthic habitat offshore of Point Estero, California (ver 1.1, November 2023)
Bathymetry, backscatter intensity, and benthic habitat offshore of Morro Bay, California (ver. 1.1, January 2024)
Bathymetry and topography, video observation, and derived benthic habitat data offshore of Seattle, Washington
Multibeam echosounder, video observation, and derived benthic habitat data offshore of south-central California in support of the Bureau of Ocean Energy Management Cal DIG I, offshore alternative energy project
Piston and gravity core data collected during USGS cruise 2019-642-FA offshore of south-central California in support of the Bureau of Ocean Energy Management (BOEM) California Deepwater Investigations and Groundtruthing (Cal DIG I) alternative energy pro
California State Waters Map Series: Offshore of Refugio Beach, California
California State Waters Map Series — Offshore of San Gregorio, California
California State Waters Map Series: Offshore of Coal Oil Point, California
California State Waters Map Series: offshore of Santa Barbara, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, and
California State Waters Map Series: Offshore of Carpinteria, California
Marine benthic habitat mapping of the West Arm, Glacier Bay National Park and Preserve, Alaska
California State Waters Map Series — Offshore of Ventura, California
California State Waters Map Series: Offshore of Santa Barbara, California
California State Waters Map Series — Hueneme Canyon and vicinity, California
Marine benthic habitat mapping of Muir Inlet, Glacier Bay National Park and Preserve, Alaska, with an evaluation of the Coastal and Marine Ecological Classification Standard III
Seafloor geology and potential benthic habitats were mapped in Muir Inlet, Glacier Bay National Park and Preserve, Alaska, using multibeam sonar, ground-truth information, and geological interpretations. Muir Inlet is a recently deglaciated fjord that is under the influence of glacial and paraglacial marine processes. High glacially derived sediment and meltwater fluxes, slope instabilities, and v
The USGS California Deepwater Investigations and Groundtruthing, or Cal DIG, science crew aboard research vessel Bold Horizon on San Francisco Bay.
These “pom-pom” anemones (Liponema sp.) have attached to the rock in a place where there are probably very good currents, which bring small floating particles of food to them. Water depth is 1041 m (3415 ft).
These “pom-pom” anemones (Liponema sp.) have attached to the rock in a place where there are probably very good currents, which bring small floating particles of food to them. Water depth is 1041 m (3415 ft).
A small juvenile skate (left) and a large rockfish (right) hang out on the murky, silty seafloor with sea stars. Water depth: 856 m (2808 ft).
A small juvenile skate (left) and a large rockfish (right) hang out on the murky, silty seafloor with sea stars. Water depth: 856 m (2808 ft).
Retrieving the MBARI (Monterey Bay Aquarium Research Institute) MiniROV from the Pacific Ocean offshore of California, on research vessel (R/V) Bold Horizon.
Retrieving the MBARI (Monterey Bay Aquarium Research Institute) MiniROV from the Pacific Ocean offshore of California, on research vessel (R/V) Bold Horizon.
California State Waters Map Series—Benthic habitat characterization in the region offshore Humboldt Bay, California
Pockmarks offshore Big Sur, California provide evidence for recurrent, regional, and unconfined sediment gravity flows
California State waters map series—Benthic habitat characterization in the region offshore of Morro Bay, California
Multi-factor biotopes as a method for detailed site characterization in diverse benthic megafaunal communities and habitats in deep-water off Morro Bay, California
California Deepwater Investigations and Groundtruthing (Cal DIG) I, volume 3 — Benthic habitat characterization offshore Morro Bay, California
California deepwater investigations and groundtruthing (Cal DIG) I: Fault and shallow geohazard analysis offshore Morro Bay
The California Deepwater Investigations and Groundtruthing (Cal DIG) I project focuses on the potential seafloor hazards and impacts of alternative energy infrastructure in the outer continental shelf region offshore of south-central California. This is one of three reports covering a single study area located between Monterey and Point Conception, California in federal waters outside of the State
Characterization of deep-sea coral and sponge communities in Greater Farallones National Marine Sanctuary: Point Arena South Essential Fish Habitat Conservation Area and New Amendment 28 Areas
California State Waters Map Series — Offshore of Gaviota, California
California State Waters Map Series — Offshore of Point Conception, California
Benthic assemblages of mega epifauna on the Oregon continental margin
Oregon OCS seafloor mapping: Selected lease blocks relevant to renewable energy
The California Seafloor and Coastal Mapping Program – Providing science and geospatial data for California's State Waters
Science and Products
Exploring Biodiversity of the Deep Hawaiian Pacific Ocean with Seafloor Mapping and eDNA Technologies
Marine Geomorphology, Evolution, and Habitats
California Seafloor Mapping Program
California Seafloor Mapping Program data collection
California Seafloor Mapping Program map-set production
California Seafloor Mapping Program applications
Bathymetry, backscatter intensity, seismic reflection, and benthic habitat data offshore of Arcata, California
Bathymetry, backscatter intensity, seismic reflection, and benthic habitat data offshore of Eureka, California
Bathymetry, backscatter intensity, and benthic habitat offshore of Cape Mendocino, California
Bathymetry, backscatter intensity, and benthic habitat offshore of the Eel River, California
Multibeam echo sounder, video observation, and derived benthic habitat data offshore of Tacoma, Washington
Bathymetry and topography, video observation, and derived benthic habitat data offshore of Burien, Washington
Bathymetry, backscatter intensity, and benthic habitat offshore of Point Buchon, California (ver. 1.1, January 2024)
Bathymetry, backscatter intensity, and benthic habitat offshore of Point Estero, California (ver 1.1, November 2023)
Bathymetry, backscatter intensity, and benthic habitat offshore of Morro Bay, California (ver. 1.1, January 2024)
Bathymetry and topography, video observation, and derived benthic habitat data offshore of Seattle, Washington
Multibeam echosounder, video observation, and derived benthic habitat data offshore of south-central California in support of the Bureau of Ocean Energy Management Cal DIG I, offshore alternative energy project
Piston and gravity core data collected during USGS cruise 2019-642-FA offshore of south-central California in support of the Bureau of Ocean Energy Management (BOEM) California Deepwater Investigations and Groundtruthing (Cal DIG I) alternative energy pro
California State Waters Map Series: Offshore of Refugio Beach, California
California State Waters Map Series — Offshore of San Gregorio, California
California State Waters Map Series: Offshore of Coal Oil Point, California
California State Waters Map Series: offshore of Santa Barbara, California
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, and
California State Waters Map Series: Offshore of Carpinteria, California
Marine benthic habitat mapping of the West Arm, Glacier Bay National Park and Preserve, Alaska
California State Waters Map Series — Offshore of Ventura, California
California State Waters Map Series: Offshore of Santa Barbara, California
California State Waters Map Series — Hueneme Canyon and vicinity, California
Marine benthic habitat mapping of Muir Inlet, Glacier Bay National Park and Preserve, Alaska, with an evaluation of the Coastal and Marine Ecological Classification Standard III
Seafloor geology and potential benthic habitats were mapped in Muir Inlet, Glacier Bay National Park and Preserve, Alaska, using multibeam sonar, ground-truth information, and geological interpretations. Muir Inlet is a recently deglaciated fjord that is under the influence of glacial and paraglacial marine processes. High glacially derived sediment and meltwater fluxes, slope instabilities, and v
The USGS California Deepwater Investigations and Groundtruthing, or Cal DIG, science crew aboard research vessel Bold Horizon on San Francisco Bay.
The USGS California Deepwater Investigations and Groundtruthing, or Cal DIG, science crew aboard research vessel Bold Horizon on San Francisco Bay.
These “pom-pom” anemones (Liponema sp.) have attached to the rock in a place where there are probably very good currents, which bring small floating particles of food to them. Water depth is 1041 m (3415 ft).
These “pom-pom” anemones (Liponema sp.) have attached to the rock in a place where there are probably very good currents, which bring small floating particles of food to them. Water depth is 1041 m (3415 ft).
A small juvenile skate (left) and a large rockfish (right) hang out on the murky, silty seafloor with sea stars. Water depth: 856 m (2808 ft).
A small juvenile skate (left) and a large rockfish (right) hang out on the murky, silty seafloor with sea stars. Water depth: 856 m (2808 ft).
Retrieving the MBARI (Monterey Bay Aquarium Research Institute) MiniROV from the Pacific Ocean offshore of California, on research vessel (R/V) Bold Horizon.
Retrieving the MBARI (Monterey Bay Aquarium Research Institute) MiniROV from the Pacific Ocean offshore of California, on research vessel (R/V) Bold Horizon.
California State Waters Map Series—Benthic habitat characterization in the region offshore Humboldt Bay, California
Pockmarks offshore Big Sur, California provide evidence for recurrent, regional, and unconfined sediment gravity flows
California State waters map series—Benthic habitat characterization in the region offshore of Morro Bay, California
Multi-factor biotopes as a method for detailed site characterization in diverse benthic megafaunal communities and habitats in deep-water off Morro Bay, California
California Deepwater Investigations and Groundtruthing (Cal DIG) I, volume 3 — Benthic habitat characterization offshore Morro Bay, California
California deepwater investigations and groundtruthing (Cal DIG) I: Fault and shallow geohazard analysis offshore Morro Bay
The California Deepwater Investigations and Groundtruthing (Cal DIG) I project focuses on the potential seafloor hazards and impacts of alternative energy infrastructure in the outer continental shelf region offshore of south-central California. This is one of three reports covering a single study area located between Monterey and Point Conception, California in federal waters outside of the State
Characterization of deep-sea coral and sponge communities in Greater Farallones National Marine Sanctuary: Point Arena South Essential Fish Habitat Conservation Area and New Amendment 28 Areas
California State Waters Map Series — Offshore of Gaviota, California
California State Waters Map Series — Offshore of Point Conception, California
Benthic assemblages of mega epifauna on the Oregon continental margin
Oregon OCS seafloor mapping: Selected lease blocks relevant to renewable energy
The California Seafloor and Coastal Mapping Program – Providing science and geospatial data for California's State Waters
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government