http://www.pnsn.org/WEBICORDER/VOLC/RCM_SHZ_UW_--.2011091312.htmlAm Mt Rainier wurden schwache Erdebeben registriert. Es muss nicht sein, dass eine Eruption bevorsteht...aber ungewöhlich sei es schon.
Todays tremor is by far the biggest one since many months.
List of previous quakes
Sate Time Location Depth Mag
11/06/19 01:46:39 46.84N 121.76W 4.0 0.1 AB
11/06/20 21:08:36 46.84N 121.75W 3.4 0.2 AB
11/06/23 04:29:41 46.84N 121.75W 2.1 1.4 AB
11/06/24 18:40:11 46.84N 121.75W 2.6-0.1 AA
11/06/28 12:50:16 46.85N 121.74W 3.8 0.8 AA
11/07/04 18:31:13 46.85N 121.77W 6.2 0.0 AA
11/07/05 18:22:19 46.86N 121.72W 0.0 1.1 BC
11/08/03 19:00:27 46.85N 121.76W 4.6 0.9 AA
11/08/12 23:43:42 46.86N 121.73W 0.9 0.5 AA
11/08/16 15:41:46 46.84N 121.76W 3.3 0.5 AB
11/08/18 17:04:48 46.86N 121.73W 1.8-0.3 AC
11/08/21 17:24:45 46.87N 121.74W 3.2 0.0 AC
11/08/22 23:20:34 46.85N 121.75W 4.2 1.3 AA
11/08/29 15:25:58 46.86N 121.75W 3.7-0.5 AC
11/09/01 12:20:20 46.85N 121.78W 0.0 0.8 AC
11/09/04 02:56:33 46.85N 121.74W 3.8 0.3 AB
11/09/04 02:57:41 46.85N 121.74W 3.5 0.8 AA
11/09/04 10:50:09 46.85N 121.75W 3.9 0.6 AB
11/09/12 07:49:04 46.84N 121.75W 3.8 0.9 AA
11/09/12 07:51:05 46.85N 121.75W 3.7-0.1 AC
Volcano information
Mount Rainier, at 4392 m the highest peak in the Cascade Range, forms a dramatic backdrop to the Puget Sound region. Large Holocene mudflows from collapse of this massive, heavily glaciated andesitic volcano have reached as far as the Puget Sound lowlands.
The present summit was constructed within a large crater breached to the northeast formed by collapse of the volcano during a major explosive eruption about 5600 years that produced the widespread Osceola Mudflow. Rainier has produced eruptions throughout the Holocene, including about a dozen during the past 2600 years; the largest of these occurred about 2200 years ago. The present-day summit cone is capped by two overlapping craters. Extensive hydrothermal alteration of the upper portion of the volcano has contributed to its structural weakness; an active thermal system has caused periodic melting on flank glaciers and produced an elaborate system of steam caves in the summit icecap. Reported 19th-century eruptions have not left identifiable deposits, but a phreatic eruption may have taken place as recently as 1894.
Text : Courtesy Smithsonian Institute
http://earthquake-report.com/2011/09/13/weak-earthquake-right-below-mount-rainier-volcano-washington-usa/ (Archiv-Version vom 23.09.2011)