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Book Chapter

Late Holocene earthquake geology in Sweden

By
Nils-Axel Mörner
Nils-Axel Mörner
Palaeogeophyics & Geodynamics, Rösundavägen 17, S-13336 Saltsjöbaden, Sweden (e-mail: morner@pog.nu)
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Published:
January 01, 2009

Abstract

As a function of the rapid rate of glacial isostatic uplift, deglacial palaeoseismicity in Sweden was exceptionally high, in magnitude as well as frequency. Today, seismic activity is low to moderately low with occasional events reaching M 4–5. In the Late Holocene, 11 events in the order of M 6–7 are recorded. These palaeoseismic events seem also to be recorded in several old place names, as in the tale of the Fenris Wolf. Some of the events generated local to regional tsunamis. The palaeoseismic activity recorded in Late Holocene time implies that our short-term seismic hazard assessment must include the possibility of future events in the order of up to M 7. For long-term hazard assessment, repeating glacial/deglacial phases, we must work with magnitudes of M 8 to 9.

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Contents

Geological Society, London, Special Publications

Palaeoseismology: Historical and Prehistorical Records of Earthquake Ground Effects for Seismic Hazard Assessment

K. Reicherter
K. Reicherter
RWTH Aachen University, Germany
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A. M. Michetti
A. M. Michetti
Università dell’Insubria, Italy
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P. G. Silva
P. G. Silva
Universidad de Salamanca, Spain
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The Geological Society of London
Volume
316
ISBN electronic:
9781862395640
Publication date:
January 01, 2009

GeoRef

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