HR: 1340h
AN: S13B-0193    [Abstracts]
TI: Rain-Triggered Earthquake Activity at Mt. Hochstaufen, SE-Germany.
AU: * Kraft, T
EM: Kraft@LMU.de
AF: Department for Earth and Environmental Sciences, LMU Munich, Theresienstr. 41, Munich, 80333 Germany
AU: Hainzl, S
EM: Hainzl@Geo.Uni-Potsdam.de
AF: Institute for Earth Sciences, University Potsdam, Postfach 60 15 53, Potsdam, 14415 Germany
AU: Wassermann, J
S13B-0193 AF: Department for Earth and Environmental Sciences, LMU Munich, Theresienstr. 41, Munich, 80333 Germany
AU: Igel, H
S13B-0193 AF: Department for Earth and Environmental Sciences, LMU Munich, Theresienstr. 41, Munich, 80333 Germany
AU: Schmedes, E
S13B-0193 AF: Department for Earth and Environmental Sciences, LMU Munich, Theresienstr. 41, Munich, 80333 Germany
AB: A growing body of evidence suggests that fluids are intimately linked to a variety of faulting processes. These include the long-term structural and compositional evolution of fault zones; fault creep; and the nucleation, propagation, arrest and recurrence of earthquake rupture. Yet, the particular mechanisms through which fluids and associated parameters influence the stress regime and thus the seismicity of a particular area are not well understood.
We carry out a study of the spatio-temporal occurrence of earthquakes and its connection to meteorological observables (precipitation) in the swarmquake area of Mt. Hochstaufen, near Bad Reichenhall, in south-eastern Germany. The small volume in which the earthquakes take place, the almost yearly occurring earthquake swarms, and a permanent seismo-meteorological monitoring network, provide nearly controlled experimental conditions to study the physics of earthquake swarms and to infer characteristic properties of the seismogenic crust.
We will show that the small pore-pressure perturbations associated with simple diffusion due to surface rain can explain most of the observed seismicity pattern.
UR: http://www.Geophysik.LMU.de/~toni/AGU05
DE: 4475 Scaling: spatial and temporal (1872, 3270, 4277)
DE: 4480 Self-organized criticality
DE: 7200 SEISMOLOGY
DE: 7223 Earthquake interaction, forecasting, and prediction (1217, 1242)
DE: 7230 Seismicity and tectonics (1207, 1217, 1240, 1242)
SC: Seismology [S]
MN: Fall Meeting 2005