Hydrographic surveys Archives - Page 4 of 17

May 24, 2022

Conducting survey operations with Coast Survey’s navigation response teams

An image showing the navigation response team retrieving the survey vessel from the water.

Strategically placed around the country, NOAA’s navigation response teams―30-foot survey vessels with a three-person survey team―maintain emergency readiness while checking chart accuracy in changing ports and harbors. Navigation response teams work day-to-day in ports and harbors, collecting data to update the nation’s nautical charts. They measure depths, locate obstructions, report dangers to navigation, and update features for safe navigation. Whether there is a need to investigate wrecks, check for suspected shoals, conduct surveys for coastal management, or work with other federal agencies to support homeland security, Coast Survey’s navigation response teams have the expertise to get the job done safely and efficiently.

May 9, 2022

NOAA focuses on the Great Lakes for the 2022 field season

NOAA Ship Thomas Jefferson shown from the bridge wing of a passing ship outside of Montreal, Quebec.

In 2022, NOAA and NOAA contractors will survey U.S. coastal waters and beyond, including multiple missions in the Great Lakes. As the volume, value and size of marine vessels in U.S. waters continues to grow, it is essential that NOAA increase the accuracy and frequency of surveys. A great amount of data on nautical charts of the Great Lakes is more than 50 years old, and only about 5 to 15 percent of the Great Lakes are mapped to modern standards using remote sensing methods such as light detection and ranging and sound navigation and ranging.

April 4, 2022

Coast Survey’s mobile integrated survey team goes to Antarctica

An image of the United States Coast Guard cutter Polar Star docked at McMurdo Station ice pier on a relatively ice free day for Winter Quarters Bay.

By, Annie Raymond

In 1959, following the International Geophysical Year of 1957-58, scientists from twelve nations conducting active research in Antarctica came together and signed the Antarctic Treaty. In the years following, 42 additional countries acceded to the treaty. The treaty preserves the entire continent and surrounding waters solely for purposes of peaceful scientific collaboration and bans resource extraction and military activity. McMurdo Station on Ross Island, operated by the United States through the United States Antarctic Program, a branch of the National Science Foundation (NSF), has emerged as the largest year-round station and primary logistics hub for the region. The first U.S. Operation Deep Freeze happened prior to and in support of the International Geophysical Year of 1957-58. Since then, Operation Deep Freeze has continued annually and has become the name for supply sealift missions to McMurdo, delivering fuel, food, and supplies to scientists in Antarctica.

March 28, 2022March 31, 2022

NOAA ocean mapping and reef surveys in the Mariana Islands

NOAA Ship Rainier alongside Ford Island in Pearl Harbor, Hawaii. on a sunny day with white clouds in the sky.

On March 26, NOAA Ship Rainier set sail from Honolulu, Hawaii on a 3,307-nautical mile expedition to the Western Pacific. Originally planned for 2020, this will be the ship’s first multidisciplinary expedition to Guam and the Commonwealth of the Northern Mariana Islands. This collaborative mission between NOAA’s National Ocean Service and National Marine Fisheries Service will deliver high‐quality data, data products, and tools to the region including a seamless map linking hilltops to underwater depths and integrated data on the surrounding coral reef ecosystems. These data can provide information for countless users to make critical management decisions within disciplines such as habitat management and restoration, tsunami modeling, monitoring, and marine resource management.

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March 9, 2022March 23, 2022

The Interagency Working Group on Ocean and Coastal Mapping announces progress report on mapping U.S. ocean, coastal, and Great Lakes waters

Graphic showing the percentage of coastal, ocean, and Great Lakes waters of the United States that are unmapped as of January 2022.

The Interagency Working Group on Ocean and Coastal Mapping (IWG-OCM) has released the third annual report on the progress made in mapping U.S. ocean, coastal, and Great Lakes waters. Knowledge of the depth, shape, and composition of the seafloor has far-reaching benefits, including safer navigation, hazard mitigation for coastal resilience, preservation of marine habitats and heritage, and a deeper understanding of natural resources for sustainable ocean economies. The 2020 National Strategy for Mapping, Exploring, and Characterizing the United States Exclusive Economic Zone 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.

Continue reading “The Interagency Working Group on Ocean and Coastal Mapping announces progress report on mapping U.S. ocean, coastal, and Great Lakes waters”

February 2, 2022March 23, 2022

NOAA releases 2022 hydrographic survey season plans

NOAA Ship Fairweather in College Fiord, Alaska

NOAA hydrographic survey ships and contractors are preparing for the 2022 hydrographic survey season in U.S. coastal waters and beyond. 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 considers 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!

January 24, 2022March 23, 2022

The nautical chart update process – build it and we will chart it

Nautical charts are updated with the most current information available through several processes and workflows within NOAA’s Office of Coast Survey. The large majority of these updates consist of revisions to water depth information. The bottom of a water body is changeable by nature, thus hydrographic surveys are constantly necessary to show contemporary depths in a given body of water. What doesn’t happen quite as often are changes to land along the coast, altering the way inlets, harbor entrances, and river mouths appear from a bird’s eye view. Unless there has been a catastrophic event, these changes in land are usually the result of human interaction.

November 16, 2021March 23, 2022

Underway from Alaska to California encountering a new phenomenon, cellular service

Image showing NOAA Ship Fairweather turning towards the Golden Gate at the end of the project.

By ACHST Simon Swart, Operations Officer Lt. Shelley Devereaux, and HST Adriana Varchetta

After six months of surveying in Alaska, NOAA Ship Fairweather was ready to point the bow south and set sail for San Francisco Bay. However, an unforeseen circumstance stymied the planned underway date. Although we eagerly anticipated the warmer waters of San Francisco Bay, this delay was well received by the hydrographers in the survey department and amongst the NOAA Corps officers. Our work had begun stacking up due to an extremely busy season, coupled with the fact that for most of us, this was our first time working on hydrographic project sheets. Therefore, we happily used this week of “down-time” to complete previous project sheets and plan for the upcoming survey. Those of us as sheet managers focused on cleaning multibeam data, processing backscatter mosaics, attributing features, conducting quality control checks, and writing descriptive reports. This process was greatly assisted with the help of augmenting physical scientists Pete Holmberg and Janet Hsiao. In the end, we were able to finish processing a number of sheets and reach a comfortable place on all the others. After a week of long hours, we were finally ready to toss lines and say “see you next year Alaska.”

October 18, 2021March 23, 2022

Deep fiords and hydrographic history in Glacier Bay National Park

NOAA Ship Rainier at anchor in Bartlett Cove, Glacier Bay National Park.

By Ensign Alice Beittel and Ensign Karl Wagner

Throughout the spring and summer of 2021, NOAA Ship Rainier surveyed numerous bays and inlets of Alaska’s Glacier Bay National Park and Preserve. As one of the largest national wilderness systems and a United Nations designated World Heritage Site, Glacier Bay National Park includes over 2.7 million acres of marine, terrestrial, and freshwater ecosystems. This dynamic landscape is a living example of a never-ending cycle of geological and ecological change and adaptation. With up to 20-foot tide ranges, seasonal migrations of humpback whales and salmon, and glaciers in flux, the resilient ecosystem attracts millions of visitors each year. This year, Rainier surveyed the Beardslee Islands, Geikie Inlet, Berg Bay, Muir Inlet, Bartlett Cove, Pleasant Island, Taylor Bay, and Dundas Bay. Each survey area revealing several changes in seafloor bathymetry and bottom type. High-resolution seafloor bathymetry will be used to update nautical charts for safe navigation and serve as baseline data to support further research of this culturally and ecologically significant marine environment.

September 30, 2021March 23, 2022

The Kodiak archipelago – whales, foxes, and bears, oh my!

An image showing the mountainous shoreline of Kodiak Island

By Simon Swart and Adriana Varchetta

Between April and August of 2021, NOAA Ship Fairweather visited the southern part of the Kodiak archipelago to survey and provide updated bathymetry for a remote, yet important area that sorely needed new chart data. Early in the year, abundant wildlife and the sparse population meant the ship’s crew only had to contend with spritely weather patterns. But as spring turned to summer and the weather improved, the village of Akhiok became a hive of activity. Many types of fishing vessels began plying the waters around Alitak Bay, dropping crab pots and casting nets as they went. The increase in sunlight also transformed the landscape from brown, barren hills into a lush green canvas. Quick waves hello and calls from locals to not run over their crab pots, kept the importance of the mission at the forefront of the crews mind, with an occasional aircraft sighting jolting them back to the 21st century.