Taxonomy term

dune

Red Planet Roundup: April 2018

With two rovers patrolling the surface of Mars, six spacecraft orbiting above it, and scientists here on Earth studying the Red Planet from afar, new findings are announced often. Here are a few of the latest updates.

 
05 Apr 2018

Titan's oddly oriented dunes may be electrostatically sculpted

Saturn’s largest moon, Titan, which has a dense, nitrogen-rich atmosphere with evidence of large amounts of frozen water at the surface, is a world apart from Earth’s moon. Among other strange phenomena, Titan has vast fields of frozen hydrocarbon particles that form 100-meter-tall dunes whose crests point east, opposite the prevailing west-blowing winds predicted by atmospheric models of Titan. In a new study in Nature Geoscience, researchers have found that these mysterious dunes may be sculpted in part by electrostatic charging of the frozen hydrocarbon grains.

01 Aug 2017

Two new looks at Titan's dunes

Saturn’s largest moon, Titan, is covered with extensive fields of sand dunes around its equator. From a distance, the wind-swept landscape looks similar to those seen on Earth, Mars and Venus, but new research suggests that dune formation on Titan may require different conditions than previously thought.

31 Mar 2015

Geotextiles: From sludge to shoreline protection to surfing - what's next?

Since their introduction in the early 1980s, geotextile structures have gained popularity in the engineering community and are now being used for a variety of geotechnical engineering applications. Geotextiles were originally developed as permeable reinforcement for soils in landscape applications. Woven and nonwoven geotextiles, known for their strength and permeability, are typically made from the synthetic polymers polypropylene and polyester, but natural fibers like coir and jute are becoming more popular.

13 Nov 2011