Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/151019
Title: Thermal squeezing of the seismogenic zone controlled rupture of the volcano-rooted Flores Thrust
Authors: Lythgoe, Karen H.
Muzli, Muzli
Bradley, Kyle
Wang, Teng
Nugraha, Andri Dian
Zulfakriza, Zulfakriza
Widiyantoro, Sri
Wei, Shengji
Keywords: Science::Geology
Issue Date: 2021
Source: Lythgoe, K. H., Muzli, M., Bradley, K., Wang, T., Nugraha, A. D., Zulfakriza, Z., Widiyantoro, S. & Wei, S. (2021). Thermal squeezing of the seismogenic zone controlled rupture of the volcano-rooted Flores Thrust. Science Advances, 7(5), eabe2348-. https://dx.doi.org/10.1126/sciadv.abe2348
Project: 04INS000845A620 
04MNS001950A620 
Journal: Science Advances 
Abstract: Temperature plays a critical role in defining the seismogenic zone, the area of the crust where earthquakes most commonly occur; however, thermal controls on fault ruptures are rarely observed directly. We used a rapidly deployed seismic array to monitor an unusual earthquake cascade in 2018 at Lombok, Indonesia, during which two magnitude 6.9 earthquakes with surprisingly different rupture characteristics nucleated beneath an active arc volcano. The thermal imprint of the volcano on the fault elevated the base of the seismogenic zone beneath the volcanic edifice by 8 km, while also reducing its width. This thermal “squeezing” directly controlled the location, directivity, dynamics, and magnitude of the earthquake cascade. Earthquake segmentation due to thermal structure can occur where strong temperature gradients exist on a fault.
URI: https://hdl.handle.net/10356/151019
ISSN: 2375-2548
DOI: 10.1126/sciadv.abe2348
Rights: © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EOS Journal Articles

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