Alaska News

Image by Pacific Power Group

Scripps Adds New Research Vessel

package to meet all their criteria.”The newest research vessel joins the fleet at Scripps, which is one of the oldest and largest centers for ocean, earth and atmospheric science research, education and public service. The organization’s fleet has plied the waters along the West Coast, Alaska, Indonesia and Mexico, gathering critical data that has helped guide marine industries and governments in making policy decisions.Much of the research work the newest Scripps vessel will conduct requires operating at slow speeds performing tasks like mapping the ocean floor. The ship’s twin

Study: Sunflower Sea Star Population in Peril

once abundant along the West Coast of North America, according to research by Cornell University and the University of California, Davis, in Science Advances.“At one time plentiful in nearshore waters, the sunflower sea stars right now cannot be found off the California coast and are rare into Alaska,” said Drew Harvell, Cornell professor of ecology and evolutionary biology, a co-lead author. “Numbers of the sea stars have stayed so low in the past three years, we consider them endangered in the southern part of their range, and we don’t have data for northern Alaska.&rdquo

An artist’s depiction of LRAUV under sea ice. Using photo-chemical sensors, the robot scans the density of a billowing cloud of oil coming from an ocean floor well. The red and yellow objects are parts of a communication system consisting of antennas suspended under ice from a buoy installed on top of the ice.  Graphic by ADAC.

LRAUV: Arctic Oil-Spill-Mapping Robot Put to the Test

can be developed and deployed.”To help the Coast Guard map oil spills under ice, the DHS Science and Technology Directorate (S&T) has been working on an underwater robot for the past four years through a DHS Center of Excellence, the Arctic Domain Awareness Center (ADAC) at the University of Alaska Anchorage, in partnership with the Woods Hole Oceanographic Institution (WHOI) and Monterey Bay Aquarium Research Institute.The result of this research is the Tethys Long Range Autonomic Underwater Vehicle or LRAUV, a helicopter-portable, torpedo-shaped system with oil sensors and navigation capabilities

Photo: McLane Research Laboratories

McLane Research Announces New WTS-LV Deep Option

. GEOTRACES GP15 cruise. WTS-LV samplers with dual Vertical Intake filter holders are specified by the GEOTRACES program, a global effort to better understand the world’s oceans through their trace elements. Cruise GP15 was the first meridional section of GEOTRACES through the Pacific Ocean between Alaska and Tahiti.WTS-LV samplers collect a single water sample onto 142mm filter media. The Dual Filter model features separately metered, modular 142mm vertical intake filter holders for parallel filtration. In addition to the new Deep feature, other options for this single event sampler include 4L/min

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

online.Each institution will continue to operate and maintain the portion 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

Photo: Phoenix

Phoenix SRDRS Receives Operational Readiness Certification

command (Submarine Squadron ELEVEN) to maintain certification of the operators and equipment for independent operations. This periodic evaluation specifically certified URC and Phoenix to participate in the eighth iteration of the CHILEMAR exercise in San Diego waters and the SSN RESCUEX this fall in Alaska. The SSN RESCUEX will be the first time that the Submarine Rescue Diving and Recompression System (SRDRS) will mate with a U.S. submarine.Following the ORE certification and a brief in port period, the Phoenix team proceeded back to sea with URC to participate in the CHILEMAR VIII rescue exercise

(Photo: ASV Global)

Autonomous Vehicle Completes Survey Mission off Alaska

An autonomous surface vessel recently went the distance for a hydrographic survey mission along a remote stretch of Alaskan coastline.ASV Global and TerraSond said they recently completed a hydrographic survey for charting off the coast of Alaska. The 10,649km survey was carried out by an ASV Global C-Worker 5 unmanned vessel alongside the Q105 survey ship acting as the mother vessel. Fitted with a multibeam echosounder, the C-Worker 5 carried out 53 percent of the survey.Throughout the operation the C-Worker 5 was remotely monitored using ASV Global’s ASView control system from a station on

A dive team investigates sonar targets collected via the REMUS 100 AUV,  with RV Norseman II sailing in the background (Photo: NOAA)

US Destroyer Wreckage Discovered off Remote Alaskan Island

, Ph.D., acting under secretary of commerce for oceans and atmosphere and acting NOAA administrator. “It’s important to honor these U.S. Navy Sailors who made the ultimate sacrifice for our nation.”  Mapping an underwater battlefieldAbner Read was on patrol at about 1:50 a.m. Alaska time when the massive explosion – presumed to be from a Japanese mine – ripped the destroyer apart. Somehow the crew kept the main part of Abner Read’s hull watertight, and two nearby Navy ships towed it back to port. “This was catastrophic damage that by all rights should

(Photo: NOAA)

Scientists Map Fast-moving Fault off Alaska

Researchers from NOAA, U.S. Geological Survey and their partners have completed the first high-resolution, comprehensive mapping of one of the fastest moving underwater tectonic faults in the world, located in southeastern Alaska. This information will help communities in coastal Alaska and Canada better understand and prepare for the risks from earthquakes and tsunamis that can occur when faults suddenly move.Since 2015, scientists have been gathering data on the Queen Charlotte-Fairweather fault system, a 746-mile long strike-slip fault line that extends from offshore of Vancouver Island, Canada

The William B Morgan Large Cavitation Channel (LCC) is a large variable-pressure closed-loop water tunnel that has been operated by the U.S. Navy in Memphis since 1991. This facility is well designed for a wide variety of hydrodynamic and hydroacoustic tests. Its overall size and capabilities allow test-model Reynolds numbers to approach, or even achieve, those of full-scale air- or water-borne transportation systems. (Photo: U.S. Navy)

Navy Tests Scale Models in Big Facilities

for propulsor evaluations in turns and captive model stability and control experiments. The center also has access to a reservoir in Maryland where scaled models of both ships and submarines are tested.But some of Carderock’s most impressive capabilities reside far away, at facilities from the Alaska to the Bahamas, and from Tennessee to Idaho.Carderock’s Combat Craft division in Little Creek, Va., manages a number of small craft projects to include design, construction, acquisition and sustainment.The South Tongue of the Ocean Acoustic Measurement Facility (STAFAC) in the Bahamas and the

(Source: NOAA Climate.gov, Data: Mark Tschudi)

Old Sea Ice is Disappearing from the Arctic Ocean

the 1981–2010 average, but not a record setter.Sea ice generally exits the Arctic through the Fram Strait east of Greenland, and NSIDC reported that the low extent of multiyear ice may have been driven by a vigorous transport of sea ice during the 2017–2018 winter. The Beaufort Gyre north of Alaska has traditionally acted as a nursery for growing sea ice, but warmer conditions have impeded the gyre's ability to preserve older ice since the start of the 21st century.ReferencesArctic winter warms up to a low summer ice season. (2018, May 3). National Snow and Ice Data Center. Accessed May

Marine Technology Magazine Cover Jun 2019 - Hydrographic Survey: Single & Multibeam Sonar

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