Fault displacement rates on a range of timescales

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dc.contributor.author Mouslopoulou, Vasiliki
dc.contributor.author Walsh, John J.
dc.contributor.author Nicol, Andrew
dc.date.accessioned 2011-07-20T15:53:18Z
dc.date.available 2011-07-20T15:53:18Z
dc.date.copyright 2008 Elsevier B.V. en
dc.date.issued 2009-02-25
dc.identifier.citation Earth and Planetary Science Letters en
dc.identifier.issn 0012-821X
dc.identifier.uri http://hdl.handle.net/10197/3029
dc.description.abstract Displacements on tectonic faults primarily accrue during earthquakes at rates that vary through time. To examine the processes that underlie the temporal changes in fault displacement rates we analyse displacements and displacement rates for time periods from the present to 5, 10, 20, 300, 500, 1 000 and 5 000 kyr for 261 active reverse or normal faults from a worldwide dataset. Displacement rates depart from million-year average rates by up to three orders of magnitude with the size of these departures inversely related to fault length and the duration of the sample period. Short-term (≤ 20 kyr) displacement rates generally span a greater range on small faults than large, a feature which suggests more variable growth on smaller faults. Simple earthquake-slip modeling shows that variations in displacement rates require changes in both recurrence interval and slip per event and do not support the Characteristic-slip earthquake model. As long as fault system strain rates are uniform, displacement rates generally become constant over time periods between 20 - 300 kyr, with the length of time required to reach stability being inversely related to the regional basin-wide strain rates. Stable long-term displacements rates and fluctuations in earthquake recurrence intervals and slip arise, in part, due to fault interactions. en
dc.description.sponsorship Irish Research Council for Science, Engineering and Technology en
dc.format.extent 856838 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Elsevier en
dc.rights This is the author’s version of a work that was accepted for publication in Earth and Planetary Science Letters. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Earth and Planetary Science Letters Volume 278, Issues 3-4, 25 February 2009, Pages 186-197 DOI#:10.1016/j.epsl.2008.11.031. en
dc.subject Displacement rate en
dc.subject Timescale en
dc.subject Earthquake slip en
dc.subject Earthquake recurrence en
dc.subject New Zealand en
dc.subject Fault system en
dc.subject.lcsh Faults (Geology)--New Zealand en
dc.subject.lcsh Earthquakes--New Zealand en
dc.subject.lcsh Fault zones--New Zealand en
dc.title Fault displacement rates on a range of timescales en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.internal.webversions http://dx.doi.org/10.1016/j.epsl.2008.11.031 en
dc.status Peer reviewed en
dc.identifier.volume 278 en
dc.identifier.issue 3-4 en
dc.identifier.startpage 186 en
dc.identifier.endpage 197 en
dc.identifier.doi 10.1016/j.epsl.2008.11.031
dc.neeo.contributor Mouslopoulou|Vasiliki|aut| en
dc.neeo.contributor Walsh|John J.|aut| en
dc.neeo.contributor Nicol|Andrew|aut| en
dc.description.othersponsorship University College Dublin, President’s Research Fellowship Scheme en
dc.description.othersponsorship Royal Society of New Zealand, Marsden Fund en

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