Landslides induced by the 2017 Mw7.3 Sarpol Zahab earthquake (Iran)

نویسندگان

چکیده

Landslides are the main secondary effects of earthquakes in mountainous areas. The spatial distribution these landslides is controlled by local seismic ground motion and slope stability. While gravitational instabilities arid semi-arid environments understudied, we document triggered Sarpol Zahab earthquake (November 12, 2017, Mw7.3, Iran/Iraq border), largest event ever recorded Zagros Mountains. An original earthquake-induced landslide inventory was derived, encompassing various sizes velocities (from rapid disrupted rockfalls to slow-moving coherent landslides). This confirms low level environments. It also displays clear differences volumetric distributions landslides, having 386 limited size around epicenter, 9 giant (areas ca. 106 m2) active ancient deep-seated coseismically accelerated at locations up 180 km from epicenter. unusual distant triggering discussed interpreted as an interaction between source properties geological conditions, emphasizing key role variability short scales landslides. Finally, study documents kinematics earthquakes, opens new perspectives for studying over (~ 1–10 years) long-time 1000–10,000 periods.

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ژورنال

عنوان ژورنال: Landslides

سال: 2022

ISSN: ['1612-510X', '1612-5118']

DOI: https://doi.org/10.1007/s10346-021-01832-0