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Long Valley

http://survival.4u.org/bilder/vulkane/doku/long-valley.jpg
Quelle: Smithsonian Institution, Global Volcanism Program
Vulkan-Info
Breitengrad37.6N
Längengrad118.8W
LandUSA
Höhe3390 m
Potentielle VEI8
Letzter Ausbruch1450
TypCaldera
X
Das Long Valley ist eine Caldera von 17 x 32 km Grösse. Die Caldera liegt östlich der Sierra Nevada in Kalifornien.

Sie entstand vor etwa 730.000 Jahren im Rahmen der voluminösen Bishop Tuff Eruption.

Aktivitäten (wird übersetzt, sobald ich die Zeit dazu finde)

  • 05/82 (SEAN 07:05) Seismic swarms; new fumaroles; uplift
  • 06/82 (SEAN 07:06) Minor earthquake swarm; additional uplift of resurgent dome since 1980
  • 07/82 (SEAN 07:07) No new activity
  • 08/82 (SEAN 07:08) Minor seismicity; deformation data summarized
  • 10/82 (SEAN 07:10) More earthquake swarms
  • 11/82 (SEAN 07:11) No new earthquake swarms or deformation changes
  • 12/82 (SEAN 07:12) Earthquake swarms and increased thermal activity
  • 01/83 (SEAN 08:01) Seismicity declines; epicentral area deforms
  • 02/83 (SEAN 08:02) Seismicity remains elevated; but no new swarms
  • 03/83 (SEAN 08:03) Seismicity declines to near background
  • 06/83 (SEAN 08:06) Earthquake swarms but no deformation changes
  • 07/83 (SEAN 08:07) New collapse pits and fumarole
  • 11/83 (SEAN 08:11) Brief earthquake swarm in S part of the caldera
  • 09/84 (SEAN 09:08) Seismicity at relatively low level and inflation
  • 10/85 (SEAN 10:10) Continued deformation and low-level seismicity
  • 07/86 (SEAN 11:07) Nearby earthquakes cause no pronounced seimicity and deformation change in caldera
  • 02/87 (SEAN 12:02) Tectonic seismicity and slow inflation in 1986
  • 11/88 (SEAN 13:11) Several hundred earthquakes in E caldera moat
  • 06/89 (SEAN 14:06) Earthquake swarm near caldera rim
  • 07/89 (SEAN 14:07) Seismic swarm continues
  • 08/89 (SEAN 14:08) Shallower seismicity; minor deformation
  • 09/89 (SEAN 14:09) Frequent seismicity continues
  • 11/89 (SEAN 14:11) Seismic swarm gradually declines; minor inflation
  • 12/89 (SEAN 14:12) Seismicity increases in caldera's S moat
  • 01/90 (BGVN 15:01) Continued swarm-like activity on S margin of resurgent dome and S moat; brief swarm at Mammoth Mountain
  • 02/90 (BGVN 15:02) Seismicity continues to increase along S margin of resurgent dome
  • 03/90 (BGVN 15:03) Continued earthquake swarm in caldera's S moat
  • 04/90 (BGVN 15:04) S moat earthquake swarms of 6-7 May most intense since 1983-84
  • 05/90 (BGVN 15:05) S moat seismicity declines and deformation slows
  • 03/91 (BGVN 16:03) Earthquake swarm in S moat is most intense inside the caldera since 1983-4
  • 06/92 (BGVN 17:06) Abrupt increase in seismicity triggered by M 7.5 earthquake hundreds of kilometers away
  • 04/94 (BGVN 19:04) Summary of 1992-93 seismicity and deformation
  • 03/95 (BGVN 20:03) Summary of 1994 seismicity, deformation, and CO2 discharge
  • 04/96 (BGVN 21:04) Summary of 1995 activity; March-April 1996 earthquake swarm
  • 06/96 (BGVN 21:06) Two S-moat earthquake swarms during June
  • 11/97 (BGVN 22:11) Summary of 1996 activity
  • 12/97 (BGVN 22:12) Seismic quiescence continues during January-June 1997
  • 06/99 (BGVN 24:06) Continued dome inflation and persistent earthquake swarms through 1998
  • 07/01 (BGVN 26:07) Decreased seismicity during 1999-2000
  • 03/03 (BGVN 28:03) Summary of 2001-2002 activity; renewed inflation of the resurgent dome

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