Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorMallick, Rishaven_US
dc.contributor.authorMeltzner, Aron J.en_US
dc.contributor.authorTsang, Louisa L. H.en_US
dc.contributor.authorLindsey, Eric Ostromen_US
dc.contributor.authorFeng, Lujiaen_US
dc.contributor.authorHill, Emma M.en_US
dc.identifier.citationMallick, R., Meltzner, A. J., Tsang, L. L. H., Lindsey, E. O., Feng, L. & Hill, E. M. (2021). Long-lived shallow slow-slip events on the Sunda megathrust. Nature Geoscience, 14(5), 327-333.
dc.description.abstractDuring most of the time between large earthquakes at tectonic plate boundaries, surface displacement time series are generally observed to be linear. This linear trend is interpreted as a result of steady stress accumulation at frictionally locked asperities on the fault interface. However, due to the short geodetic record, it is still unknown whether all interseismic periods show similar rates, and whether frictionally locked asperities remain stationary. Here we show that two consecutive interseismic periods at Simeulue Island, Indonesia experienced significantly different displacement rates, which cannot be explained by a sudden reorganization of locked and unlocked regions. Rather, these observations necessitate the occurrence of a 32-year slow-slip event on a shallow, frictionally stable area of the megathrust. We develop a self-consistent numerical model of such events driven by pore-fluid migration during the earthquake cycle. The resulting slow-slip events appear as abrupt velocity changes in geodetic time series. Due to their long-lived nature, we may be missing or mis-modelling these transient phenomena in a number of settings globally; we highlight one such ongoing example at Enggano Island, Indonesia. We provide a method for detecting these slow-slip events that will enable a substantial revision to the earthquake and tsunami hazard and risk for populations living close to these faults.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.relationNRF-NRFI05– 2019–0009en_US
dc.relation.ispartofNature Geoscienceen_US
dc.rights© 2021 The Author(s). All rights reserved. This paper was published by Springer Nature] in Nature Geoscience and is made available with permission of The Author(s).en_US
dc.titleLong-lived shallow slow-slip events on the Sunda megathrusten_US
dc.typeJournal Articleen
dc.contributor.schoolAsian School of the Environmenten_US
dc.contributor.researchEarth Observatory of Singaporeen_US
dc.description.versionAccepted versionen_US
dc.subject.keywordsNatural Hazardsen_US
dc.description.acknowledgementThis research was supported by the National Research Foundation Singapore under a Singapore NRF Investigatorship to E.M.H. (proposal ID NRF-NRFI05– 2019–0009), Singapore NRF Fellowship to A.J.M. (NRF-NRFF11–2019–0008), the Earth Observatory of Singapore (EOS), the National Research Foundation of Singapore, and the Singapore Ministry of Education under the Research Centers of Excellence initiative.en_US
item.fulltextWith Fulltext-
Appears in Collections:ASE Journal Articles
EOS Journal Articles
Files in This Item:
File Description SizeFormat 
Mallick_etal_SimeulueSSE_final.pdf304.33 kBAdobe PDFThumbnail

Citations 20

Updated on Mar 25, 2023

Web of ScienceTM
Citations 20

Updated on Mar 24, 2023

Page view(s)

Updated on Mar 27, 2023

Download(s) 50

Updated on Mar 27, 2023

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.