NOAA bathymetric data helps scientists more accurately model tsunami risk within Barry Arm

Barry Glacier, Alaska.

In May of 2020, local geologists identified a steep, unstable slope that has the potential to become a tsunami-generating landslide in Barry Arm, a glacial fjord 60 miles east of Anchorage, Alaska. With documented cases of tsunami-generating landslides in Alaska including Lituya Bay in 1958 and Taan Fjord in 2015, this new hazard immediately caught the attention of state and federal partners who quickly joined forces to quantify the risk to those living and boating in Alaska’s Prince William Sound, specifically the communities of Whittier, Valdez, Cordova, Tatitlek, and Chenega.

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NOAA Coast Survey’s new strategy supports charting mandates and broader seafloor mapping

This week, NOAA’s Office of Coast Survey released the Mapping U.S. Marine and Great Lakes Waters: Office of Coast Survey Contributions to a National Ocean Mapping Strategy. This report is part of NOAA’s ongoing commitment to meet core surveying and nautical charting mandates while supporting broader needs to fill gaps in seafloor mapping and environmental sciences.

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NOAA joins federal and state partners in signing MOU on emergency maritime response in Hawaii

Coast Survey’s hydrographic survey experts along with the Office of National Marine Sanctuary staff are ready to survey Honolulu Channel following Hurricane Lane.

NOAA’s Office of Coast Survey, United States Coast Guard (USCG) Sector Honolulu, State of Hawaii Department of Transportation and United States Army Corps of Engineers (USACE) Honolulu Division established a memorandum of understanding (MOU) outlining each signatory’s area of responsibility in the event of a disaster in the Hawaii region. The intent of the MOU is to improve the efficiency and effectiveness of response efforts and speed the reopening of the ports and waterways following an emergency. 

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NOAA certifies San Francisco Bay shipping channel with top survey rating, increasing confidence for deep draft vessel navigation

Tanker heading west and approaching the Richmond–San Rafael Bridge and Pinole Shoal Channel.

There is a risk factor when navigating in and out of our nation’s busiest ports, particularly at the helm of some of the world’s largest deep draft vessels. Mariners rely on tide and water level information, wind and weather data, but perhaps most importantly, they rely on electronic navigational charts and the quality of depth measurements that comprise them. Recently, NOAA’s Office of Coast Survey certified the U.S. Army Corps of Engineers (USACE) hydrographic surveys for the Pinole Shoal Channel in San Francisco Bay —  a critical waterway for bulk carriers and tankers to reach the ports of Sacramento, Stockton, Martinez, and Benicia — the highest possible data quality rating, Category Zone of Confidence (CATZOC) A1, for two years. This is the first USACE federally-maintained channel to receive the highest-level certification. NOAA anticipates the increased CATZOC rating will dramatically increase shipping efficiency.

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NOAA announces new progress report on mapping U.S. ocean, coastal, and Great Lakes waters

Map showing the geographic distribution and extent of the unmapped areas within U.S. waters. Analysis conducted in January 2020.

NOAA released the first annual report on the progress made in mapping U.S. ocean, coastal, and Great Lakes waters. The depth, shape, and composition of the seafloor are foundational data elements that we need to understand in order to explore, sustainably develop, conserve, and manage our coastal and offshore ocean resources. The 2019 Presidential Memorandum on Ocean Mapping of the United States Exclusive Economic Zone and the Shoreline and Nearshore of Alaska and the global Seabed 2030 initiative make comprehensive ocean mapping a priority for the coming decade. The Unmapped U.S. Waters report tracks progress toward these important goals.

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NOAA ship readies for historic deployment to the Western Pacific to map the oceans

NOAA Ship Rainier in the Papahānaumokuākea Marine National Monument.

In three weeks, NOAA Ship Rainier will depart on the farthest journey of its 52-year history as it embarks on a multidisciplinary mapping trip to the Western Pacific. Rainier and a diverse team of scientists on board will map the waters from shore to almost 2000 meters deep around Guam and the Commonwealth of the Northern Mariana Islands including Saipan, Rota, and Tinian. The data and observations collected will support safe navigation, coral habitat and fisheries conservation, and storm surge and tsunamis modeling. The data will also be made available to those at the local level and contribute to the larger national and global initiatives regarding comprehensive seafloor mapping.

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NOAA releases 2020 hydrographic survey season plans

NOAA 2020 Hydrographic Survey Season Story Map Cover

NOAA hydrographic survey ships and contractors are preparing for the 2020 hydrographic survey season. The ships collect bathymetric data (i.e. map the seafloor) to support nautical charting, modeling, and research, but also collect other environmental data to support a variety of ecosystem sciences. NOAA considers hydrographic survey requests from stakeholders such as marine pilots, local port authorities, the Coast Guard, and the boating community, and also consider other hydrographic  and NOAA science priorities in determining where to survey and when. Visit our “living” story map to find out more about our mapping projects and if a hydrographic vessel will be in your area this year!

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NOAA supports safe ferry transit in Puget Sound

By Lt. j.g. Michelle Levano

If you have spent time on the water in Puget Sound, you have probably seen the large, distinct green and white vessels. These vessels move passengers, vehicles, and cargo across Puget Sound to the San Juan Islands and to Victoria, Canada, year round. They are a part of the Washington State Department of Transportation ferry system. The state has been operating ferries since 1951, and intended to run the ferry service until cross Sound bridges could be built.  These bridges were never built, and the state continues to operate the ferries to this day. As of last July, there are 22 state-operated ferries on Puget Sound, with the largest vessel able to carry 2500 passengers and 202 vehicles. 

One of these routes is a 30-minute transit from Coupeville, WA, to Port Townsend, WA, at the mouth of Puget Sound. This route carries roughly 820,000 passengers a year, and saves travelers from a five- hour drive around the Sound. n 2013 the Washington Department of Ecology and the Applied Physics Laboratory at the University of Washington installed instruments on board to measure the velocity of current at the entrance of the Sound. Due to the shallow depth of the ferry terminal at Coupeville, extreme (low) tidal conditions interrupt this ferry route up to three times a month. 

Ferry with navigation response vessel.
NRT-Seattle with the F/V Salish, one of the two ferries completing the Coupeville to Port Townsend route this summer. Credit: Adrian Biesel

NOAA’s Northwest and Pacific Islands Navigation Manager Crescent Moegling received a survey request from the Washington State Ferries in early summer of 2019 to survey this route. Following completion of a routine survey in Bellingham Bay, Navigation Response Team – Seattle (NRT-Seattle) along with augmenters Lt j.g. Joshua Fredrick, NOAA’s Center for Operational Oceanographic Products and Services, and Adrian Biesel, an intern at NOAA Office of Coast Survey’s Pacific Hydrographic Branch, traveled to Oak Harbor, Washington, on August 14. After safety and familiarization briefings, NRT-Seattle got underway from the Fort Casey State Park boat ramp daily to collect multibeam data. The team completed this request on August 19.

Lt. j.g. Joshua Fredrick on trailered survey response vessel.
Lt. j.g. Joshua Fredrick following a fresh water rinse of the boat at the end of a survey day. Credit: Lt. j.g. Michelle Levano
Intern Adrian Biesel prepares the boat for daily operations by deploying the surface sound speed sensor.
Intern Adrian Biesel prepares the boat for daily operations by deploying the surface sound speed sensor. Credit: Lt. j.g. ichelle Levano

The density of the team’s data allows for confident detection of 1×1 meter objects on the seafloor. In addition to collecting information on the depth of the seafloor, the team also verified, investigated, and updated several features on the chart including but not limited to kelp beds, fog signals, and pier pilings.

NRT-Seattle truck and response vessel transiting from Mukilteo, Washington, to Clinton, Washington. Credit: Lt. j.g. Michelle Levano