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sand

Researchers collect sediments from a rocky stream with a helicopter and steep rock hills in the background
Posted inScience Updates

Earth’s Continents Share an Ancient Crustal Ancestor

by J. Hollis, C. Kirkland, M. Hartnady, M. Barham and A. Steenfelt 23 August 202122 February 2022

How did today’s continents come to be? Geological sleuths found clues in grains of sand.

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.

An image depicting bright-toned sand ripples in Proctor Crater on Mars.
Posted inResearch Spotlights

Megaripple Migration Offers Insights into Martian Atmosphere

Rachel Fritts, Science Writer by Rachel Fritts 31 July 20208 March 2022

The movement of large sand ripples, documented for the first time, suggests Mars is windier than we thought.

Aerial view of a massive sand-mining machine in the desert
Posted inNews

To Protect the World’s Sand, We Need to Know How to Measure It

Rachel Fritts, Science Writer by Rachel Fritts 8 July 20203 November 2021

New research provides a more accurate model that coastal managers and engineers can use to account for sand transport over time.

Beach on barrier island Spiekeroog in Germany
Posted inResearch Spotlights

Microbial Mechanisms Change with the Seasons

Elizabeth Thompson by Elizabeth Thompson 1 April 202012 October 2022

Microbes living in the sand on a barrier island alter the way they break down organic matter as their environment changes throughout the year, which has implications for the surrounding water column.

Satellite view of the Nili Patera dune field on Mars in 2014
Posted inResearch Spotlights

Mapping Martian Dunes from Orbit

by David Shultz 24 March 202028 July 2022

New research shows how fast the sands shift on the Red Planet and how useful imagery from different orbiting cameras can be in studies of Mars’s dunes.

Multicomponent ionic transport simulations in a physically and electrostatically heterogeneous domain
Posted inEditors' Highlights

Modeling Transport and Charge Effects in Heterogeneous Media

by Xavier Sanchez-Vila 19 February 20206 February 2023

Simulation of charged species reactive transport in complex physically and electrostatically heterogeneous porous media is possible with a multiple continua approach coupled to a geochemical code.

Close-up of a mussel shell near the waterline on a sandy beach
Posted inNews

Shells Sound Out Sand’s Acoustic Signatures

Hannah Thomasy, Science Writer by Hannah Thomasy 11 November 20193 November 2021

Shell remains give sand from different locations unique acoustic signatures.

Four petri dishes filled with gravel
Posted inNews

Gravel Gives Clues to the Strength of Paleotsunamis

Sarah Derouin, Science Writer by Sarah Derouin 9 October 20193 November 2021

The roundness of sediment deposits may shed light on how big tsunamis were in the past and how to evaluate hazards in the future.

Black-and-white aerial photo of an atomic bomb cloud
Posted inNews

Hiroshima Bomb Created Asteroid Impact–Like Glass

Lucas Joel by L. Joel 28 May 20199 May 2022

The glass rained from the sky as the bomb annihilated the Japanese city.

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