AHEAD European Archive of Historical EArthquake DataEuropean Archive of Historical EArthquake Data

Elenco studiData sources
Elenco terremotiEarthquakes

Gisler et al., 2004a

Gisler M., Fäh D., Kästli P., 2004a. Historical Seismicity in Central Switzerland. Eclogae Geol. Helv., 97, 2, 221-236. https://doi.org/10.1007/s00015-004-1128-3

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An overview of seismic activity in Central Switzerland is presented. As earthquake activity has been very low for the time period of modern instrumental observation, we focus on the largest known earthquakes in the historical past (September 18, 1601, September 10, 1774, January 23, 1775, and the swarms of 1777 and 1964). The epicenters of these events indicate a concentration of activity around Altdorf (1774, 1775) and Sarnen (1601, 1777, 1964), whereas recent instrumentally observed microearthquakes are distributed more evenly over the whole area. Moreover, earthquake activity was extraordinarily low since the beginning of modern instrumental observations. The irregular episodes of strong earthquakes, both in space and time, characterize the seismicity of Central Switzerland. The results of the study make it evident that earthquake activity is not necessarily stationary. As earthquake recurrence intervals are important factors in seismic hazard assessment, well-documented information on historical earthquakes are particularly important.

Nell'archivio ci sono In the archive there are 3 terremoti provenienti da questo studio: earthquakes considered from this study:

molto grandiextra large
molto piccolivery small
non parametrizzatinot determined

Clicca sulla riga per individuare il terremoto sulla mappa o sulla lente per ottenere più informazioni.Click the row to highlight the earthquake on the map or the lens to obtain more information.

  DataDate    Area epicentraleEpicentral area    MDPs   Imax  EQ in
EQ in
Riferim. in
1774 09 10 15 30Altdorf/UR  48  8  
1775 01 23 03 25Mount Uri-Rotstock/Altdorf  3  D  
1777 02 07 01Kerns/OW  11  7