Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/86326
Title: The 2015 Mw 6.0 Mt. Kinabalu earthquake: an infrequent fault rupture within the Crocker fault system of East Malaysia
Authors: Wang, Yu
Wei, Shengji
Wang, Xin
Lindsey, Eric Ostrom
Tongkul, Felix
Tapponnier, Paul
Bradley, Kyle
Chan, Chung-Han
Hill, Emma Mary
Sieh, Kerry
Keywords: 2015 Sabah earthquake
Mt. Kinabalu
Issue Date: 2017
Source: Wang, Y., Wei, S., Wang, X., Lindsey, E. O., Tongkul, F., Tapponnier, P., et al. (2017). The 2015 Mw 6.0 Mt. Kinabalu earthquake: an infrequent fault rupture within the Crocker fault system of East Malaysia. Geoscience Letters, 4, 6-.
Series/Report no.: Geoscience Letters
Abstract: The Mw 6.0 Mt. Kinabalu earthquake of 2015 was a complete (and deadly) surprise, because it occurred well away from the nearest plate boundary in a region of very low historical seismicity. Our seismological, space geodetic, geomorphological, and field investigations show that the earthquake resulted from rupture of a northwest-dipping normal fault that did not reach the surface. Its unilateral rupture was almost directly beneath 4000-m-high Mt. Kinabalu and triggered widespread slope failures on steep mountainous slopes, which included rockfalls that killed 18 hikers. Our seismological and morphotectonic analyses suggest that the rupture occurred on a normal fault that splays upwards off of the previously identified normal Marakau fault. Our mapping of tectonic landforms reveals that these faults are part of a 200-km-long system of normal faults that traverse the eastern side of the Crocker Range, parallel to Sabah’s northwestern coastline. Although the tectonic reason for this active normal fault system remains unclear, the lengths of the longest fault segments suggest that they are capable of generating magnitude 7 earthquakes. Such large earthquakes must occur very rarely, though, given the hitherto undetectable geodetic rates of active tectonic deformation across the region.
URI: https://hdl.handle.net/10356/86326
http://hdl.handle.net/10220/43978
ISSN: 2196-4092
DOI: http://dx.doi.org/10.1186/s40562-017-0072-9
Rights: © 2017 The Author(s). This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EOS Journal Articles

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