eprintid: 1463 rev_number: 13 eprint_status: archive userid: 2 dir: disk0/00/00/14/63 datestamp: 2015-02-24 15:07:25 lastmod: 2017-02-08 12:21:39 status_changed: 2015-04-27 12:10:56 type: article metadata_visibility: show creators_name: McCloskey, John creators_name: Nalbant, Suleyman creators_name: Steacy, Sandy creators_name: Nostro, Concetta creators_name: Scotti, Oona creators_name: Baumont, David creators_id: creators_id: ss.nalbant@ulster.ac.uk creators_id: creators_id: creators_id: creators_id: corp_creators: Geophysics Research Group, University of Ulster, Coleraine, Ireland corp_creators: Geophysics Research Group, University of Ulster, Coleraine, Ireland corp_creators: Geophysics Research Group, University of Ulster, Coleraine, Ireland corp_creators: Istituo Nazionale di Geofisica et Volcanologia, Roma, Italy corp_creators: IRSN, Fontenya-Aux-Roses, France corp_creators: IRSN, Fontenya-Aux-Roses, France title: Structural constraints on the spatial distribution of aftershocks ispublished: pub subjects: SS divisions: EPOS-P full_text_status: none abstract: Calculations of static stress changes due to large earthquakes have shown that the spatial distribution of aftershocks is predictable to first order, with aftershocks primarily occurring in areas experiencing positive stress changes. Delineation of these areas relies on resolving the stress perturbation onto planes with known orientations; common practice is to use poorly constrained regional stress information to compute optimally oriented failure planes, assuming that they exist everywhere. Here we show that this assumption is not supported by observation but rather that aftershock failure planes are controlled by geological structure. We argue that useful aftershock hazard estimates are better made by replacing information on regional stress with statistical measures of structural orientations. date: 2003-06-18 date_type: published publication: Geophysical Research Letters volume: 30 number: 12 publisher: American Geophysical Union pagerange: 1-4 id_number: doi:10.1029/2003GL017225 refereed: TRUE issn: 0094-8276 official_url: http://dx.doi.org/10.1029/2003GL017225 access_IS-EPOS: limited owner: Publisher citation: McCloskey, John and Nalbant, Suleyman and Steacy, Sandy and Nostro, Concetta and Scotti, Oona and Baumont, David (2003) Structural constraints on the spatial distribution of aftershocks. Geophysical Research Letters, 30 (12). pp. 1-4. DOI: https://doi.org/10.1029/2003GL017225