Description
From September 23 October 14, 2023 (Seward, Alaska to San Francisco, California), NOAA Ocean Exploration completed Seascape Alaska 6: Gulf of Alaska Transit Mapping (EX2307). Operations during this 22-day expedition included collection of 47,899 square kilometers of seafloor bathymetry (40,108 in the U.S. Exclusive Economic Zone). During mapping operations, NOAA Ocean Exploration simultaneously collected EM 304 multibeam sonar bathymetry observations and Simrad EK60/EK80 split-beam fisheries sonar observations of biologic material in the water column, as well as Knudsen 3260 sub-bottom profiler observations of sub-seafloor geologic structure and sediment. Focused survey regions included closing bathymetric gaps in the Gulf of Alaska, California, and off the coast of British Columbia, Canada. An additional focused survey in the Cascadia margin off the coast of Washington improved data quality in a region of interest for geological hazards. The exploratory mapping operations conducted during this expedition provide initial characterization of the region, as well as data to support further exploration. All data associated with this expedition have been archived and are publicly available through the NOAA archives.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| Global Change Master Directory (GCMD) Keywords | Unknown | The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. | Open resource |
| Global Change Master Directory (GCMD) Keywords | Unknown | The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. | Open resource |
| Global Change Master Directory (GCMD) Keywords | Unknown | The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. | Open resource |
| NCEI Contact Information | Unknown | Information for contacts at NCEI. | Open resource |
Tags
- ak
- alaska
- and california
- aquatic sciences
- bathymetric gaps
- bathymetry
- bathymetry/seafloor topography
- benthic habitats
- ca
- california
- canada
- chemosynthetic communities
- ctd
- deep-sea coral and sponge communities
- deep-sea exploration
- deep-water habitats
- deep-water mapping
- doc/noaa/nesdis/ncei
- doc/noaa/oar/oer
- earth science
- efh
- em304
- essential fish habitats
- expedition
- exploration
- exploration vessel
- explorer
- express
- fish habitats
- gulf of alaska
- habitat areas of particular concern
- hapc
- high-definition underwater video
- mapping survey
- marine education
- marine environment monitoring
- multibeam
- multibeam backscatter
- multi-beam sonar
- multibeam sonar
- national centers for environmental information
- nesdis
- noaa
- noaa fleet
- noaa ship okeanos explorer
- north pacific ocean
- ocean
- ocean discovery
- ocean education
- ocean exploration
- ocean exploration and research
- oceanic & atmospheric research
- ocean literacy
- ocean research
- oceans
- oer
- office of ocean exploration and research
- okeanos
- okeanos explorer
- oregon
- pacific ocean
- r337
- san francisco
- science
- scientific computing system
- scientific mission
- scientific research
- scs
- sea
- seabed 2030
- seafloor topography
- seascape alaska
- seward
- shakedown
- single beam sonar
- single-beam sonar
- singlebeam sonar
- site characterization
- sonar anomalies
- split beam sonar
- stewardship
- sub-bottom profile
- systematic exploration
- technology
- telepresence
- transformational research
- undersea
- underwater
- underwater video
- u.s. department of commerce
- washington
- water column backscatter
- west coast
- west coast of canada