Juan De Fuca News

(Image: Teledyne Marine)

Teledyne Benthos Acoustic Modems Aid in Innovasea Fish Tracking

to support the Ocean Tracking Network (OTN)—an aquatic research platform that connects universities, businesses, not-for-profit organizations, and governments to track animal movements on a global scale. The OTN’s Pacific Ocean acoustic receiver arrays in the Queen Charlotte Strait, Juan de Fuca Strait, and the Northern Strait of Georgia span from Vancouver Island to the mainland, provide an integrated series of regional gates to document the coastal movements of acoustically tagged juvenile salmon migrating to sea, adult salmon returning from the sea to rivers in the region to spawn

A computer-generate view of the seafloor that shows some of the hydrothermal chimneys in the Endeavour hydrothermal vent field. © 2020 MBARI

MBARI: Hydrothermal Mapping is Heating up

A recent paper by Monterey Bay Aquarium Research Institute (MBARI) has revealed almost 600 hydrothermal chimneys around the Endeavour Segment of the Juan de Fuca Ridge, about 350 kilometres (220 miles) northwest of Washington State. The vents, located in a valley about 14 kilometres (8.6 miles) long and 1.5 kilometres (0.9 miles) wide, has been studied previously, but never mapped until now because of difficult access.Hydrothermal vents are created by magma beneath the seafloor that heats water within the surrounding bedrock, emerging from the seafloor in the form of underwater seeps and geysers.

Fetch AZA is a self-calibrating long-life subsea sensor logging node that enables data to be wirelessly extracted via its integrated high speed acoustic modem with a battery life option of up to 10 years. (Photo: D. Chadwell, Scripps Institute of Oceanography (Webb/Chadwell/Nooner US NSF GeoPRISMS project))

Canada's New Observatory Uses 'Seafloor GPS'

hazards is to be deployed offshore Vancouver, Canada, using long endurance acoustic sensing technology supplied by Sonardyne International Ltd.The new Northern Cascadia Subduction Zone Observatory (NCSZO) will use a “seafloor GPS” network to monitor long-term movements of the subducting Juan de Fuca plate and overriding North American tectonic plate. Data gathered by the new observatory will play a critical role in informing assessments of earthquake and tsunami risk to the large populations of the Pacific North-West.The NCSZO is led by Ocean Networks Canada (ONC)—an initiative of the

Photo: C-MAP

C-MAP Launches High-res Coastal Bathymetry

and CaribbeanPassamaquoddy Bay to Block IslandCape Cod, Long Island and Hudson RiverBlock Island to NorfolkNorfolk to JacksonvilleFlorida and the BahamasSt. Lucie Inlet to New OrleansNew Orleans to BrownsvilleSan Diego to Santa CruzPoint Sur to Cape BlancoCape Blanco to Cape FlatteryPuget Sound, Juan de Fuca and San Juan IslandsVictoria, British Columbia to Cape ScottSan Juan Islands to Nigei IslandsQueen Charlotte Sound to Dixon EntranceHawaiian Island

The research vessel Neil Armstrong arrived to recover a surface mooring that is part of the OOI Global Array in the Irminger Sea south of Greenland in 2016. (Photo by James Kuo, Woods Hole Oceanographic Institution)

NSF Awards Contract to Continue Ocean Observatories Initiative

of OOI assets for which it is currently responsible: WHOI will operate the Pioneer Array off the Northeast U.S. coast and the Global Arrays in the Irminger Sea off the southern tip of Greenland and at Station Papa in the Gulf of Alaska; UW will operate the Regional Cabled Array that extends across the Juan de Fuca tectonic plate and overlying ocean; OSU will operate the Endurance Array off the coast of Washington and Oregon; and Rutgers will operate the cyberinfrastructure system that ingests and delivers data for the initiative. In addition, WHOI will serve as the home of a new OOI Project Management Office

ROV Doc Ricketts is launched through the moon pool of its host ship, the R/V Western Flyer. (Photo: MBARI)

MBARI ROV Doc Ricketts Makes 1,000th Dive

Research Institute (MBARI) remotely operated vehicle (ROV) Doc Ricketts completed its 1,000th dive on December 21, 2017, marking a significant milestone for the vehicle and its team of pilots. Since it began operations in February 2009, Doc Ricketts has explored the deep sea as far north as the Juan de Fuca Ridge off the Pacific Northwest coast and as far south as Baja California, Mexico.   The ROV’s milestone dive could not have taken place in a more picturesque place. MBARI researchers and scientists from the Monterey Bay National Marine Sanctuary were revisiting an area called Sur

Figure 1: 3D sidescan image of the J.E. Boyden lying upright on the bottom of Lake Union as captured from the real-time 3DSS sonar display (Image: Ping DSP)

Case Study: 3DSS-DX-450 Sonar

fleet in 1888, the Boyden quickly made a name for herself as a powerful and capable tug, transporting coal, coke and lumber between ports on Vancouver Island and Puget Sound. The J.E. Boyden was also involved for many years as a tug for sailing ships entering the variable waters of the Strait of Juan de Fuca and Puget Sound, and assisted in the salvage efforts of the 256-foot British iron ship Kilbrannan for several months in the spring of 1896. Scuttled in 1935 in 40 feet of water in Lake Union, the J.E. Boyden wreck is still well preserved and its integrity and orientation have been documented using

(Credit: James Delgado Collection)

View from the Top: Dr. James Delgado, NOAA Director of Maritime Heritage

of oceanography at the University of Rhode Island, and the scientist who led the team that found Titanic in 1985) to plan a deep-sea mission off the southern west coast of Canada, where we have an interest, as does the province of British Columbia, in a World War II wreck located in the Strait of Juan de Fuca. Later, I’ll also be travelling to San Francisco where we’ll be doing deep-sea exploration, including what will be the first time we’ll be able to lay eyes on, and do a detailed map of, the wreck of USS Independence aircraft carrier that we did an initial sonar mapping of last

R/V Neil Armstrong sails into San Francisco Harbor at the conclusion of the first leg of its inaugural voyage in late 2015. (Image by Aerial Productions, ©Woods Hole Oceanographic Institution)

Research Vessel Neil Armstrong Joins WHOI Fleet

taken her out into open water yet.”   Then a crowd of well-wishers from town (including one Halloween Frankenstein), who had come to think of Neil Armstrong and its crew as their neighbors, slipped our lines from the dock and we were away. Come what may, our bow pointed down the Strait of Juan de Fuca to the open ocean.   The first vague idea of what would become Neil Armstrong took shape in the 1990s, when the U.S. Navy began to lay the groundwork to replace some the largest Global Class research ships, which were well into their third decade of service at the time. In 2002, the Navy

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