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Is an earthquake scenario compatible with the fall of the 'Grand Menhir Brisé' of Locmariaquer (Brittany, France)?
- Source :
- Bulletin of the Geological Society of Greece; 2023 Special Issue, p178-181, 4p
- Publication Year :
- 2023
-
Abstract
- The menhir of Locmariaquer lays in four fragments 200 m north of Locmariaquer (Morbihan, Brittany, France). Several hypotheses have been raised over time to explain its fall. This study discusses a potential earthquake origin and investigates the associated ground motion features. The historical seismicity and the current instrumental seismicity support the concept of an active seismic area. Soil and subsurface characterization highlights a complex site response. Several models of the menhir based on archaeological observations are proposed to simulate the dynamic response of the menhir. A ground motion selection from the European Strong Motion database is used as inputs. An earthquake scenario is compatible with the fall of the menhir. The associated Intensity Measures are discussed. [ABSTRACT FROM AUTHOR]
- Subjects :
- EARTHQUAKE intensity
GROUND motion
PALEOSEISMOLOGY
MENHIRS
Subjects
Details
- Language :
- English
- ISSN :
- 04389557
- Database :
- Complementary Index
- Journal :
- Bulletin of the Geological Society of Greece
- Publication Type :
- Academic Journal
- Accession number :
- 173798988