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Tidal forces explain how an icy moon of Saturn keeps its ‘tiger stripes’

By Guest PostMay 9, 2016Scienceedwin kite, enceladus, icy moon, saturn, tidal forces, tiger stripes

The persistence of the massive, explosive fissures on the surface of Saturn’s sixth-largest moon, Enceladus — despite the moon’s astoundingly frigid surface — have remained a mystery for 11 years. Researchers from Princeton University and the University of Chicago show, however, that the fissures could be kept active by the sloshing of water in the vast ocean that scientists suppose is beneath the moon’s thick ice shell. The findings could help provide a clear objective for future satellite missions to Enceladus, which scientists suspect could host life. (more…)

‘Tiger stripes’ underneath Antarctic glaciers slow the flow

By Guest PostNovember 30, 2013Environmentantarctic glaciers, antarctic ice, bed of rock, british antarctic survey, climate change, douglas macayeal, Europe, flow of glaciers, friction zones, massive antarctic glaciers, mathematical modeling, North America, olga sergienko, pattern, pine island glacier, princeton university, richard hindmarsh, satellite measurements, sea-level rise, sediment, thwaites glacier, tiger stripes, university of chicago, warming climate, west antarctica

Narrow stripes of dirt and rock beneath massive Antarctic glaciers create friction zones that slow the flow of ice toward the sea, researchers at Princeton University and the British Antarctic Survey have found. Understanding how these high-friction regions form and subside could help researchers understand how the flow of these glaciers responds to a warming climate.

Just as no-slip strips on flooring prevent people from slipping on a wet floor, these ribs or “tiger stripes” — named in reference to Princeton’s tiger mascot — provide friction that hinders the glaciers from slipping along the underlying bed of rock and sediment, the researchers report online in the journal Science. (more…)

Water Geysers on Saturn’s Moon

By Guest PostAugust 1, 2013Sciencecassini spacecraft, christophe sotin, cornell university, data, enceladus, enceladus plume, galileo, gravity, hydrocarbon composition, icy surface, instrument, ithaca, jet propulsion laboratory, linda spilker, matt hedman, moon, moon of saturn, NASA, organic material, robert brown, saturn, saturn gravity, saturnian moon, seismological signs, tiger stripes, titan, university of arizona, vims, water geysers

A new study published in Nature this week describes the forces that control the jets of water and organic material that erupt from the icy surface of Enceladus, a moon of Saturn. UA scientists contributed data to the study.

The intensity of the jets of water ice and organic molecules that shoot out from Saturn’s moon Enceladus depends on the moon’s proximity to the planet, according to data obtained by NASA’s Cassini spacecraft. The finding, detailed in the journal Nature this week, is the first clear observation that shows the Enceladus plume varies in a predictable manner. (more…)

Tag Archives: tiger stripes

Tidal forces explain how an icy moon of Saturn keeps its ‘tiger stripes’

‘Tiger stripes’ underneath Antarctic glaciers slow the flow

Water Geysers on Saturn’s Moon