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Bathymetry

All articles tagged with #bathymetry

science8 days ago•6 min saved

Antarctica's Hidden Canyon Network May Rewrite Ocean Circulation and Ice Melt

A high‑resolution survey around Antarctica identified 332 submarine canyons, some deeper than 4,000 meters, with distinct eastern and western morphologies that challenge prior climate assumptions. These canyons regulate exchanges between the continental shelf and the deep Southern Ocean, channeling warm water toward ice shelves to accelerate melting while exporting freshwater that influences global ocean circulation. The dataset enables more realistic seafloor topography in climate models, though direct flow measurements are still limited and further mooring/observational campaigns are planned.

via Indian Defence Review|

#antarctica #bathymetry #ice-shelves

science-and-technology1 year ago•5 min saved

Revolutionary Satellite Technology Maps Ocean Floors Remotely

Researchers at the U.S. Geological Survey have developed a new method to map ocean depths in shallow coastal waters using Landsat satellite data. This approach uses a physics-based algorithm to derive bathymetry from visible-light observations, overcoming traditional challenges of sonar and lidar mapping. The method, which can map depths greater than 20 meters in clear water, is particularly useful for tracking coastal changes and studying coral reef health. This satellite-based technique offers a more efficient and practical solution for seafloor mapping, contributing to initiatives like the National Ocean Mapping and Seabed 2030 projects.

via SciTechDaily|

#bathymetry #landsat #oceanography

scienceenvironment1 year ago•4 min saved

"Ocean Floor Topography Crucial to Carbon Storage, Study Finds"

A new study reveals that the shape and depth of the ocean floor significantly influence carbon sequestration, accounting for up to 50% of changes in carbon storage depth over the past 80 million years. This finding highlights the critical role of seafloor topography in the long-term carbon cycle, which has implications for climate change mitigation and the search for habitable planets.

via Phys.org|

#bathymetry #carbon-cycle #carbon-sequestration