Search results for echo sounder

Earth Sciences Mar 21, 2024

Estimating coastal water depth from space via satellite-derived bathymetry

Since ancient times, knowing the depth of coastal waters has been key to safe and successful navigation and to exploit the sea's resources. Today, bathymetry—the measurement of sea depth—is even more important, playing ...

Archaeology Feb 12, 2024

Traces of Stone Age hunter-gatherers discovered in the Baltic Sea

In autumn 2021, geologists discovered an unusual row of stones, almost 1 km long, at the bottom of Mecklenburg Bight. The site is located around 10 kilometers off Rerik at a 21-meter water depth. The approximately 1,500 stones ...

Plants & Animals Jan 11, 2024

Mating anchovies stir up the sea as much as a major storm—and it's good for the environment, too

Why would oceanographers ever care about anchovies having sex? We do because these small fish can help mix different layers of the ocean when they mate. This circulates nutrients, oxygen, and greenhouse gases around different ...

Plants & Animals Jun 8, 2023

Trailblazing research explores life in deepest parts of Indian Ocean

Scientists have used a human-occupied submersible to explore one of the Indian Ocean's deepest and little-known spots, documenting its unique habitat and diverse marine life.

Earth Sciences Mar 16, 2023

3D radar scan provides clues about threats to iconic Alaskan glacier

A detailed "body scan" of Malaspina Glacier, one of Alaska's most iconic glaciers, revealed that its bulk lies below sea level and is undercut by channels that may allow ocean water to gain access, should its coastal barrier ...

Ecology Jan 16, 2023

They say we know more about the moon than about the deep sea—they're wrong

"We know more about the moon than the deep sea."

Ecology Oct 24, 2022

The ocean's twilight zone is filled with life, but there is a big risk of overfishing

Off the coast of Norway, a marine research vessel is on an important mission. A group of researchers aboard the ship are watching closely as a giant steel wire with a fine-meshed trawl net at the end is rolled out. With each ...

Plants & Animals Nov 3, 2021

World's largest whales eat more than previously thought, amplifying their role as global ecosystem engineers

New research co-authored by Nicholas Pyenson, curator of fossil marine mammals at the Smithsonian's National Museum of Natural History, shows evidence that the world's largest whales have been sold short. The study, published ...

Earth Sciences Jul 15, 2021

Building a detailed seafloor map to reveal the ocean's unknowns

Marine scientists often feel like they're fumbling in the dark. The global ocean covers about 71 percent of our planet and is central to life as it exists on Earth. But only about 20 percent of the seafloor has been directly ...

Earth Sciences Jul 9, 2021

Collecting more than just seismic data along the Cascadia Fault

Down in the main lab of the R/V Marcus Langseth, you'll find an array of monitors—46, to be exact!—all displaying information about the data we're collecting. While many of the screens are dedicated to monitoring the ...

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