Quantifying the impacts of dredging through satellite remote sensing could serve as a valuable resource in future geopolitical disputes over contested waters.
sand
Posted inNews
Sand from Greenland’s Melting Ice Sheet Could Bring in Business
The effects of climate change could fuel a new sand mining industry in Greenland.
Posted inEditors' Vox
A Rover’s Eye View of Moving Martian Dunes
A new special issue of JGR: Planets presents findings on sand motion, morphology, and mineralogy from the Curiosity rover’s traverse of the active Bagnold dune field in Gale crater.
Posted inResearch Spotlights
Curiosity Spies Shifting Sands on Mars
Images from the rover’s pioneering encounter with sand dunes on Mars constrain wind speeds required to move sand in the thin Martian atmosphere.
Posted inResearch Spotlights
Boulders Limit Transport of Sand and Gravel in Steep Rivers
Mountain rivers and streams actively reshape landscapes by eroding material from uplands and depositing it in lowlands. Scientists can now predict this transport in very steep streams.
Posted inFeatures
Building Sandbars in the Grand Canyon
Annual controlled floods from one of America's largest dams are rebuilding the sandbars of the iconic Colorado River.
Posted inResearch Spotlights
Exploring How Wind Blows Sand on Dunes
Sand dunes migrate—so why haven’t some budged in 60 years?
Posted inResearch Spotlights
Wave Ripples Spaced by Flow Downstream of Ripple Peaks
The well-known ratio between sand ripple spacing and wave-driven flow oscillations may be dictated by flow dynamics downstream of ripple crests.
Posted inResearch Spotlights
Exploring How Water Flow Affects Bed Forms in Different Environments
In a flat sand bed, water creates undulating features.
Posted inResearch Spotlights
Modeling Sand Grains in Water
Scientist creates a numerical model that explores sediment transport.