Journal
APPLIED SCIENCES-BASEL
Volume 12, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/app12062815
Keywords
Arkalochori; Messara Basin; Heraklion Basin; Kastelli fault zone; supra detachment basin; fault segmentation; double-difference relocation; DInSAR
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This study combines seismological and remote sensing data processing techniques to validate the effects of a large earthquake on the village of Arkalochori in central Crete. Through detailed geological mapping, fault surface measuring, UAV data processing, and surface deformation analysis, the contemporary tectonic stress regime that caused the earthquake was determined.
Featured Application Field validation of combined remote sensing and seismological data after a large earthquake. The Arkalochori village in central Crete was hit by a large earthquake (M-w = 6.0) on 27 September 2021, causing casualties, injuries, and severe damage to the infrastructure. Due to the absence of apparent surface rupture and the initial focal mechanism solution of the seismic event, we initiated complementary, multi-disciplinary research by combining seismological and remote sensing data processing, followed by extensive field validation. Detailed geological mapping, fault surface measuring accompanied with tectonic analysis, fault photorealistic model creation by unmanned aerial system data processing, post-seismic surface deformation analysis by DInSAR image interpretation coupled with accurately relocated epicenters recorded by locally established seismographs have been carried out. The combination of the results obtained from these techniques led to the determination of the contemporary tectonic stress regime that caused the earthquake in central Crete, which was found compatible with extensional processes parallel to the Hellenic arc.
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