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Hydrology and fluvial processes

Satellite image of an icy ridge on Mars
Posted inNews

The Massive Ice Avalanches of Mars

by Joshua Learn 27 April 2020

Ice avalanches may have traveled at speeds of up to 80 meters per second.

Image of the Jezero delta on Mars
Posted inEditors' Highlights

How Fast Did an Ancient Martian Delta Form?

by F. Nimmo 23 April 202023 April 2020

Terrestrial meander migration rates are used to estimate a formation timescale of decades for Jezero delta on Mars.

Colorful satellite image of the location where a submarine canyon’s deep waters meet the Grand Bahama Bank
Posted inNews

How Do Submarine and Terrestrial Canyons Compare?

by R. Crowell 6 November 2019

Insights from a new study could spark discoveries about Martian landscapes and also help researchers get to the bottom of canyon formation here on Earth.

Four stages of development of the Lomonosov crater on Mars
Posted inEditors' Highlights

Lomonosov: The Crater That Started a Martian Mega Tsunami

by Laurent G. J. Montési 31 July 201916 July 2019

Three billion years ago, on Mars, the shores of an ocean may have been flooded by a mega-tsunami. Now the crater left by the bolide impact that probably triggered the tsunami has been identified.

A researcher inside the subglacial conduit under Hansbreen, Svalbard
Posted inResearch Spotlights

Mapping Subglacial Meltwater Channels

by E. Underwood 28 May 2019

Researchers find that past studies underestimate the friction meltwater channels exert on glaciers by orders of magnitude.

Martian Polar Layered Deposits
Posted inResearch Spotlights

How Do Intergranular Particles Affect the Flow of Ice?

by Terri Cook 15 April 2019

Laboratory experiments that indicate rock particles can impede sliding along grain boundaries in ice may help researchers more accurately determine the composition of planetary ice masses.

An artist’s rendering of what Mars may have looked like 4 billion years ago with an ocean covering about half of its surface
Posted inResearch Spotlights

A New Way to Analyze Evidence of Martian Oceans

by Elizabeth Thompson 9 April 2019

Mars’s aqueous past holds the answers to many questions about the Red Planet. A new study provides a tool for scouring planetary surfaces for ancient shorelines.

Jezero Crater River Delta on Mars
Posted inNews

What Ancient Rivers on Mars Reveal About Its “Great Drying”

by Jenessa Duncombe 27 March 201928 September 2021

Dried-up rivers on Mars suggest that the planet was wet in the not-too-distant past.

Slope streaks on Mars
Posted inEditors' Vox

Revisiting Enigmatic Martian Slope Streaks

by A. Bhardwaj, L. Sam, F. J. Martín‐Torres and M-P. Zorzano 15 January 201915 January 2019

Slope streaks of different sizes and shapes are a common feature on the surface of Mars, but scientists disagree about the mechanisms for their formation and development.

Researchers assess how past flooding influences river meanders
Posted inResearch Spotlights

A New Model for River Meanders

by E. Underwood 2 August 201715 August 2017

A river’s twists and turns are shaped by its past flood events.

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