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surface waves & tides

Two figures from the paper that show wave measurements in the presence of sea ice using satellite remote sensing.
Posted inEditors' Highlights

Satellites Remotely Measure Ocean Waves and Sea Ice Interactions

by Ryan P. Mulligan 12 July 202215 September 2025

A new method for using satellite observations from multiple sensors improves measurements of ocean waves as they propagate through and interact with sea ice.

Map showing the global distribution of surface-mixed layer depth.
Posted inEditors' Highlights

An Ocean Surface Layer with Potential

by Lars Umlauf 11 July 202217 August 2022

The depth of the ocean’s surface mixed layer is typically defined based on density thresholds. However, a more physically appealing definition can be constructed from potential energy considerations.

Muon detectors in a tunnel under Tokyo Bay
Posted inNews

Muography Array Under Tokyo Bay Spots Meteotsunami Waves

Tim Hornyak, Science Writer by Tim Hornyak 20 May 20227 March 2023

A new study shows how muons can be used to study tide and wave phenomena, helping secure coastal communities.

A large, fully loaded container ship arrives at a busy port in California.
Posted inNews

Rising Seas Boost Tsunami Impacts on Distant Shorelines

Katherine Kornei, Science Writer by Katherine Kornei 31 January 202231 January 2022

Modeling suggests that rising sea levels will render Southern California ports increasingly vulnerable to waves from distant-source tsunamis.

An artist’s rendering of early Earth with a huge Moon looking over the alien landscape, including oceans of water
Posted inNews

How Much Did the Moon Heat Young Earth?

by Jure Japelj 11 January 202211 January 2022

Tidal heating may have raised the surface temperature of early Earth and triggered global volcanism, a new study says.

An atmospheric river drenches California with heavy rain in 2019.
Posted inNews

Atmospheric Rivers Spur High-Tide Floods on U.S. West Coast

by Guananí Gómez-Van Cortright 17 December 202130 January 2024

Researchers analyzed 36 years of data to understand how atmospheric rivers and other factors drive chronic coastal flooding.

An icy Arctic vista is seen from a slight elevation. The landscape contains patches of white ice and randomly positioned pools of meltwater. Four scientists, small and seen from a distance, stand on the ice on the right side of the image.
Posted inNews

Melting Arctic Sea Ice Strengthens Tides

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 21 October 20213 January 2023

If climate change throws off the seasonal freeze-thaw cycle of Arctic sea ice, it could trigger a reinforcing cycle of sea ice melt in parts of the Canadian Arctic.

A boat floats between flood buildings, with people walking on the sidewalks and across a bridge.
Posted inENGAGE, News

For Venice’s Floodgates to Work, Better Forecasts Are Needed

Damond Benningfield, Science Writer by Damond Benningfield 14 October 202129 March 2023

Climate change increases massive storm surges, which may be more than Venice’s flood-control system can handle.

The heat surface of El Niño in 2015 looks like El Niño in 1997.
Posted inResearch Spotlights

Explaining Thermal Tides in the Upper Atmosphere During the 2015 El Niño

by David Shultz 26 August 202116 March 2023

Increased tropospheric heating and reduced dissipation combine to explain an anomalously large thermal tide.

Map showing location of study area (left) and conceptual model of tidally driven mixed sand–mud sediment transport at flood tide (right).
Posted inEditors' Highlights

Unravelling Sands and Muds Suspended in Coastal Environments

by Ryan P. Mulligan 26 July 202129 June 2022

A new study uses the response of optical and acoustic measurements to derive a sediment composition index for prediction of the relative fractions of mixed sediments in suspension.

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Features from AGU Publications

Research Spotlights

Rocket Launches and Reentries Harm Earth’s Ozone Layer

8 June 20268 June 2026
Editors' Highlights

Pre-Existing Structure and Stress Shape Geothermal-Induced Seismicity

2 June 20261 June 2026
Editors' Vox

Small-Scale Indian Ocean Dynamics Underpin Marine Ecology and Climate

4 June 20263 June 2026
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