volcanic activity

Volcanic Activity Shaped Mercury After All

harminka — Fri, 04 Jul 2008 10:13:00 -0500

A research team led by Brown University planetary geologist James Head has determined that volcanism played a central role in forming Mercury’s surface. The evidence of volcanic activity lends important insights into Mercury’s geologic history and appears in a special section describing the MESSENGER mission’s recent flyby of Mercury in the July 4 issue of Science.

Yellowstone plume - continental lithosphere interaction beneath Snake River Plain

harminka — Sat, 05 Jan 2008 02:37:03 -0600

The Snake River Plain represents an 800 kilometer swath of volcanic centers stretching across southern Idaho to Wyoming (northwestern United States).

Satellite methods for monitoring volcanic activity in Andes Cordillera

harminka — Sun, 07 Oct 2007 07:31:41 -0500

The central part of the Andes situated between southern Peru and Chile bears 50 active or potentially volcanoes, spread along a 1500 km-long arc. These volcanic structures mostly rise to between 4000 and 7000 m, are very remote with abrupt slopes and are often cloaked in snow.

SMART-1 diagnoses wrinkles and excess weight on the Moon

harminka — Thu, 23 Aug 2007 05:33:49 -0500

Owing to SMART-1’s high resolution and favourable illumination conditions during the satellite’s scientific operations, data from Europe’s lunar orbiter is helping put together a story linking geological and volcanic activity on the Moon.

Stronger evidence for human origin of global warming

harminka — Mon, 30 Jul 2007 10:18:49 -0500

A recent statistical analysis strengthens evidence that human activities are causing world temperatures to rise. Most climate change scientists model Earth systems from the ground up, attempting to account for all climate driving forces. Unfortunately, small changes in the models can lead to a broad range of outcomes, inviting debate over the actual causes of climate change.

Fragmented structure of seafloor faults may dampen effects

harminka — Fri, 13 Jul 2007 08:10:47 -0500

Many earthquakes in the deep ocean are much smaller in magnitude than expected. Geophysicists from the Woods Hole Oceanographic Institution (WHOI) have found new evidence that the fragmented structure of seafloor faults, along with previously unrecognized volcanic activity, may be dampening the effects of these quakes.

Earthquakes may quickly boost regional volcanoes

harminka — Tue, 10 Apr 2007 13:13:54 -0500

Scientists using NASA satellite data have found strong evidence that a major earthquake can lead to a nearly immediate increase in regional volcanic activity.

Lightning is good indicator of volcanic activity

harminka — Thu, 29 Mar 2007 06:42:46 -0500

Although it's been more than a year since Mount Augustine had its memorable eruption, work continues for University of Alaska Fairbanks researchers. The work of Alaska Volcano Observatory employees from UAF's Geophysical Institute will be appearing in the upcoming issue of the journal Science.