UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Evaluating models of Coulomb stress transfer: Is variable fault geometry important?

Mildon, ZK; Toda, S; Faure Walker, JP; Roberts, GP; (2016) Evaluating models of Coulomb stress transfer: Is variable fault geometry important? Geophysical Research Letters , 43 (24) 12,407-12,414. 10.1002/2016GL071128. Green open access

[thumbnail of Mildon_et_al-2016-Geophysical_Research_Letters.pdf]
Preview
Text
Mildon_et_al-2016-Geophysical_Research_Letters.pdf - Published version

Download (1MB) | Preview

Abstract

To determine the importance of receiver fault geometry in Coulomb stress calculations a new methodology is presented to model faults with variable geometry. Although most models use planar faults, it is known that these are inaccurate representations of faults observed in the field. The central Italian Apennines are chosen as a straightforward tectonic system with well-exposed normal faults to investigate the effect of variable geometry. It is shown that the static Coulomb stress transfer is most sensitive to changes in strike of the receiver faults, rather than changes in dip and rake. Therefore, a novel methodology to generate strike-variable faults composed of discrete rectangular patches is developed. Using the 2009 L'Aquila earthquake (Mw = 6.3) the calculated stress transferred to planar versus variable faults is assessed. The stress transferred to variable faults is sufficiently different when compared to planar cases to merit other earthquake sequences being reassessed with available fault geometry.

Type: Article
Title: Evaluating models of Coulomb stress transfer: Is variable fault geometry important?
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/2016GL071128
Publisher version: http://dx.doi.org/10.1002/2016GL071128
Language: English
Additional information: Copyright © 2016 The Authors. This is an open access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Keywords: Coulomb stress transfer; normal faults; variable fault geometry
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Inst for Risk and Disaster Reduction
URI: https://discovery.ucl.ac.uk/id/eprint/1534621
Downloads since deposit
70Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item