Muography as a new tool to study the historic earthquakes recorded in ancient burial mounds

Autor: H. K. M. Tanaka, K. Sumiya, L. Oláh
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Geoscientific Instrumentation, Methods and Data Systems, Vol 9, Pp 357-364 (2020)
Druh dokumentu: article
ISSN: 2193-0856
2193-0864
DOI: 10.5194/gi-9-357-2020
Popis: Bidirectional muographic measurements were conducted at the Imashirozuka burial mound, Japan. The mound was built in the beginning of the 6th century as a megalithic tomb and later collapsed after a landslide caused by the 1596 Fushimi earthquake, one of the largest earthquakes that has occurred in Japan over the last few centuries. The measurements were conducted in order to find evidence of this past disaster recorded in this historical heritage site. As a result, the vertical low-density regions were found at the top of the mound. These regions were interpreted as large-scale vertical cracks that caused the translational collapse process behind the rotational landslide that was already found in prior trench-survey-based works. These results indicate that there was an intrinsic problem with the stability of the basic foundation of the Imashirozuka mound before the 1596 Fushimi earthquake.
Databáze: Directory of Open Access Journals
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