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17 December 2012
As air columns collapse, glaciers tremble
One moment, a block of ice about the size of a 15-passenger van plummets from the edge of a melting glacier to the water below. Seconds later, seismic vibrations shake the glacier and surrounding rock. For years, scientists have been puzzled over why glaciers quake while losing ice. Now, a new study has uncovered how the icequakes and ice loss are connected, which may help glaciologists and climate scientists track retreating ice throughout the Arctic.
7 December 2011
Antarctic ice streams start and stop as they slide
Glacier motion is not always graceful motion. Some glaciers are downright jerky, slipping along in fitful bursts. To better understand the process, scientists are studying ice streams: regions of ice that move faster than their surroundings.
14 December 2010
Ice Volcano? Huh?
I always thought volcanoes belched flaming, crackling chunks of rock, oozed hot goopy magma, and buried everything on their slopes. So when I noticed several presentations on AGU’s schedule about “ice volcanoes,”–like P22A: Titan: The methane cycle and potential for watery warm spots 1 I was intrigued.
GeoSpace is a blog on Earth and space science, managed by AGU’s Public Information staff. The blog features posts by AGU writers and guest contributors on all sorts of relevant science topics, but with a focus on new research and geo and space sciences-related stories that are currently in the news.