gov.noaa.ncei.oer:GulfofAlaska2004 eng; USA utf8 collectionSession collection-level metadata NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact 2026-03-20T12:32:52 ISO 19115-2 Geographic information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Exploring Alaska's Seamounts on RV Atlantis in North Pacific Ocean and Gulf of Alaska between 20040730 and 20040823 GulfofAlaska2004 ExploringAlaskasSeamounts2004 2012-05 publication Dr. Thomas Shirley 361-825-2030 361-825-2050 Texas A&M University Corpus Christi Department of Life Sciences 6300 Ocean Drive Corpus Christi TX 78412 USA thomas.shirley@tamucc.edu principalInvestigator NOAA Office of Ocean Exploration and Research author NOAA National Centers for Environmental Information publisher Five seamounts (Denson, Dickins, Pratt, Welker and Giacomini) in the Gulf of Alaska that had not previously been observed by manned submersible or ROV were thoroughly mapped with multi-beaming and their fauna explored by a scientific party of 25 participating in the 2004 Gulf of Alaska Seamount Expedition. An estimated 43 coral species and 21 sponge species were collected and identified from 17 dives made by the DSV ALVIN on 5 seamounts. A large number of coral specimens were processed and packaged and sent the National Museum of Natural History, Smithsonian Institution upon disembarkation. Faunal assemblages on the corals included species from 12 different phyla and a large number (hundreds) of lesser taxa. Many of these species represent significant range extensions or records of undescribed species, but await post-cruise processing for identification and clarification. Plasma and tissue samples for genetic and physiological examination were collected from >120 crab specimens belonging to a number of species; tissue samples were collected from >130 shrimp for genetic studies. Samples of 62 coral specimens (22 bamboo, 15 paragorgid, 19 primnoid, 7 black, 23 other), 13 sponge specimens, and 36 water samples were collected for genomic studies of bacterial communities. 58 basaltic rocks were collected for geological studies and 4 rocks were collected for microbiological studies. Detailed mapping of the study area resulted in 14081 km2 of seamounts multibeamed, plus 9000 km2 of seafloor mapped while in transit, equaling 23081 km2 of total seafloor mapped. Education and outreach activities associated with the 2004 Gulf of Alaska Seamount Expedition were extensive, and included an NOAA Ocean Explorer Web site; lesson plans; a Professional Development Institutes (PDI) for Educators; 5 interactive satellite telephone calls to schools or institutes, which included conversations with scientists in situ aboard the Alvin; an Educator at Sea (Carey DeLauder, UCAP Science Teacher); nine undergradute and graduate students, a Dean John A. Knauss Sea Grant Fellow (Nicholas Alvarado), and a MATE Intern (Shinobu Okano) participated in the cruise; and, a media event at the termination of the cruise was held in Astoria, Oregon for public school teachers, newspaper, radio and television reporters. All aspects of the cruise were well documented, and all dives were designed to be multipurpose and collect data for all participants. The cruise was a resounding success and will produce a multitude of scientific discoveries. The 2004 Gulf of Alaska Seamount Expedition departed July 29 from Seattle, Washington. Aboard the R/V Atlantis, the expedition team's mission was to explore five large seamounts, located 200 miles off Alaska in the northeast Pacific. Scientists dove to the depths of these ancient volcanoes with the deep submergence vehicle (DSV) Alvin, searching for signs of life in the hadal (very deep bottom) abyss. The scientific party returned August 23 to Astoria, Oregon. Catalina M. Martinez 401-874-6250 401-874-6854 NOAA's Office of Ocean Exploration and Research 215 South Ferry Rd, URI/GSO Narragansett RI 02882 USA Catalina.Martinez@noaa.gov pointOfContact unknown https://data.noaa.gov/docucomp/image/5abab464-7994-49fc-8a2f-ec337a11bfd4 NOAA logo PNG OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY OCEANS > OCEAN ACOUSTICS > ACOUSTIC SCATTERING theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian MBES > Multibeam Mapping System CTD > Conductivity, Temperature, Depth XBT > Expendable Bathythermograph ECHO SOUNDERS instrument Global Change Master Directory (GCMD) Instrument Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian expedition exploration explorer marine education noaa ocean ocean discovery ocean education ocean exploration ocean exploration and research OER ocean literacy ocean research science scientific mission scientific research sea stewardship systematic exploration technology transformational research undersea underwater Ocean Exploration and Research (OER) Program Discovery Keywords NOAA/OAR/OER - Ocean Exploration and Research 301-734-1014 301-713-4252 1315 East-West Hwy, SSMC3, #10210 Silver Spring MD 20910 USA oceanexplorer@noaa.gov 8am-5pm, Monday through Friday resourceProvider This is a list of static and vetted keywords to assist in search and discovery of Ocean Exploration and Research (OER) program-related records. North Pacific Ocean Gulf of Alaska place None Underwater Exploration Research Volcanic Seamounts Corals Sponges Geology theme None otherRestrictions otherRestrictions Access Constraints: No access constraints. Use Constraints: No use constraints. NOAA Office of Ocean Exploration and Research (OER) largerWorkCitation program eng; USA oceans 146.33 135.67 53.23 56.5 2004-07-30 2004-08-23 0 Data Overview Ship sensor and submersible sensor meteorological and oceanographic data, navigation data from the submersible Alvin, multibeam sonar system data, multimedia, and products. NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor https://www.ncei.noaa.gov/maps/oer-digital-atlas/mapsOE.htm information asNeeded This metadata is complete. R/V Atlantis Atlantis 2012-05-15 creation Atlantis (AT) The research vessel (R/V) Atlantis is owned by the U.S. Navy and operated by WHOI for the oceanographic community. It is one of the most sophisticated research vessels afloat, and it is specifically outfitted for launching and servicing the Alvin human occupied submersible. Delivered to Woods Hole in April 1997, Atlantis was built with six science labs and storage spaces, precision navigation systems, seafloor mapping sonar, and satellite communications. The ship's three winches, three cranes, machine shop, and specialized hangars were specifically designed to support Alvin and other vehicles of the National Deep Submergence Facility. Woods Hole Oceanographic Institution (WHOI) United States http://argo.whoi.edu/ Argo project website information Sea-Bird Electronics 911plus CTD SBE 911plus CTD Sea-Bird Electronics, Inc. 425-643-9866 425-643-9954 13431 NE 20th Street Bellevue WA 98005 USA seabird@seabird.com SBE 911plus CTD SBE 911plus CTD information information resourceProvider SBE 911plus CTD Conductivity, Temperature The 911plus, consisting of the 9plus underwater CTD and 11plus V2 Deck Unit, is a premium real-time CTD accurate to the highest international standards. It features high resolution sampling (24 Hz), pump-controlled T-C ducted flow, up to 10500 meter (15,000 psia) depth capability, maximum auxiliary sensor flexibility, and modem channel for Water Sampler control. The 911plus has eight 12-bit A/D channels, and supports redundant conductivity and temperature sensors or custom auxiliary digital inputs. Kongsberg EM122 Multibeam Echosounder EM122 Kongsberg Maritime http://www.km.kongsberg.com/ks/web/nokbg0240.nsf/AllWeb/01FB0F22974EA50FC125715E002B2143?OpenDocument Kongsberg EM122 information Information on the Kongsberg EM122 multibeam sonar system information resourceProvider Kongsberg EM122 Multibeam Echosounder EM 122 multibeam echosounder is a high performance echosounder for deep water mapping with up to 288 simultaneous beams. The EM 122 is designed to perform seabed mapping to full ocean depth with an unsurpassed resolution, coverage and accuracy. The system is cost effective, reliable, and easily operated. The design of the EM 122 is based on more than 50 years of hydrographic experience with echo sounders, sonars and underwater positioning for civilian and military use. It is the latest model in a series of deep sea multibeam echo sounders started with the EM 12 in 1990 and followed by the EM 121 and the EM 120, of which about 40 systems are operational. It uses the same transducers as in the EM 120 but with new electronics and software. Compared with the EM 120 the EM 122 has up to four times the resolution in terms of sounding density through inclusion of multiping capability and more than twice the number of detections per swath. High density signal processing is a major improvement, to keep the acoustic footprint size small even for the outer beams in the swath. In typical ocean depths a sounding spacing of about 50 m across and along is achievable. The achievable swath width of the EM 122 is in the order of 30,000 m, or about 25% more than possible with the EM 120. This is obtained by using long FM chirps which gains about 15 dB in signal to noise ratio compared to CW pulses. The EM 122 is a complete system. All necessary sensor interfaces, data displays for quality control and sensor calibration, seabed visualization, and data logging are a standard part of the system, as is integrated seabed acoustical imaging capability (side scan). Including a higher frequency multibeam echo sounder such as EM 710 with the EM 122 system can give a total system solution meeting the strictest IHO requirements for all water depths. As proven with the EM 120, an accuracy of better than 0.2% of depth in deep waters is readily achievable with the EM 122. Teledyne RD Instruments Ocean Surveyor Acoustic Doppler Current Profiler Ocean Surveyor ADCP Teledyne RD Instruments http://www.teledynemarine.com/rdi/ Ocean Surveyor ADCP Ocean Surveyor ADCP information information resourceProvider Ocean Surveyor ADCP ADCP For over twenty years, Teledyne RD Instruments has been the preeminent supplier of Acoustic Doppler Current Profiling (ADCP) instrumentation for open ocean applications. Teledyne RDI's vessel-mounted Ocean Surveyor family of ADCPs continues to raise the bar, collecting detailed maps of the distribution of water currents and suspended materials through the water column and along the ship's path - at depths and resolutions previously considered unattainable. In real time, the ADCP is also used to aid in situ decision-making, to adapt field operations, and to understand current regime characteristics.