1. Coastal and Marine Hazards and Resources
  2. Geoscience Data System

Field Activity 2018-642-FA

Identifier 2018-642-FA
Alternate names 2018 Cascadia Margin Mapping; H13117; H13118; H13119; H13206; H13137
Purpose Collect multibeam, backscatter, and water column data along the slope of the Cascadia margin to fill in gaps in hi-resolution multibeam imagery for subduction zone hazard characterization
Location central and southern Cascadia margin
Summary Cruise_Backup, Cruise_Reports, GIS_FINAL_GRIDS_cruise, GIS_for_cruise data on FAD 9/17/2018
Info derived multibeam bathymetry, backscatter, and water column data
Comments NOAA will be the primary data repository for this data. This is a collaborative effort between NOAA and USGS, using NOAA's ship Rainier. OE Funding for this work is coming directly from the CMG Program. Salary support is coming from the Cascadia Task of the Marine Hazards Project.
Projects
Platform
Rainier
Length 231 feet; beam 42 feet; draft 17 feet. Launched 1967, USCGS (United States Coast and Geodetic Survey) owned 1968 to 1970. NOAA acquired in 1970. She is named for Mount Rainier in the state of Washington and is the sister ship of NOAAS Fairweather and the decommissioned NOAAS Mount Mitchell.
Vehicles
None
Itinerary
Start Seattle, WA 2018-07-31
End San Franciscoo, CA 2018-08-23
Days in the field 22
Bounds
West -127.04100963
East -124.01203827
North 46.59242377
South 40.40495725

Personnel

Organization
2885 Mission Street
Santa Cruz, CA95060
(831) 460-7401
Principal investigators Janet Tilden Watt
Crew members
Information specialist(s)
Peter Dartnell
Specialist, Information
Affiliate principal Paul Turner, NOAA

Data types and categories

Data category: Location-Elevation, Sonar
Data type: Navigation, Multibeam

Equipment used

Equipment Usage description Data types Datasets
navigation Navigation (no data reported)
multibeam Multibeam 3

Datasets

Datasets compiled from multiple sources

Dataset name Equipment Description Dataset contact
Methane seep locations derived from water-column acoustic backscatter data collected along Cascadia Margin offshore Oregon and Northern California, 2018-2021 multibeam This dataset contains the locations of 902 methane cold seeps that were detected in acoustic water-column backscatter collected by the U.S. Geological Survey between 2018 to 2021. Rising bubbles emitting from methane seeps on the seafloor can be detected acoustically with multibeam echo sounding sonar used to collected seafloor bathymetric mapping data, which the USGS and NOAA have cooperatively collected along the Cascadia Margin offshore of northern California and Oregon for several years. James E Conrad
Composite multibeam bathymetry surface of the southern Cascadia Margin offshore Oregon and northern California multibeam Data from various sources, including 2018 and 2019 multibeam bathymetry data collected by the National Oceanic and Atmospheric Administration (NOAA) and the U.S. Geological Survey (USGS) were combined to create a composite 30-m resolution multibeam bathymetry surface of southern Cascadia Margin offshore Oregon and northern California. The data are available as a geoTIFF file. Peter Dartnell
Polygon shapefile of data sources used to create a composite multibeam bathymetry surface of the southern Cascadia Margin offshore Oregon and northern California multibeam This polygon shapefile describes the data sources used to create a composite 30-m resolution multibeam bathymetry surface of southern Cascadia Margin offshore Oregon and northern California. Peter Dartnell

Publications

Samples collected during this field activity