eprintid: 10191318
rev_number: 7
eprint_status: archive
userid: 699
dir: disk0/10/19/13/18
datestamp: 2024-04-25 09:48:23
lastmod: 2024-04-25 09:48:23
status_changed: 2024-04-25 09:48:23
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Mitchell, S
creators_name: Roberts, GP
creators_name: Faure Walker, JP
creators_name: Iezzi, F
creators_name: Sgambato, C
creators_name: Robertson, J
creators_name: Mildon, ZK
creators_name: Ganas, A
creators_name: Papanikolaou, ID
creators_name: Rugen, EJ
title: The relationship between kinematics and fault geometry for surface coseismic ruptures on across-strike faults: New observations of slip vectors and displacements along the Pisia and Skinos faults from the 1981 Eastern Gulf of Corinth, Greece earthquakes
ispublished: pub
divisions: UCL
divisions: B04
divisions: C06
divisions: F57
divisions: ZZ3
note: Copyright © 2024 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
abstract: The relationships between kinematics and fault geometry for the coseismic ruptures from the 24th and February 25, 1981 earthquake sequence in the eastern Gulf of Corinth (Ms 6.7 and 6.4) are analysed. The two earthquakes ruptured faults located across strike rather than along strike as typifies other earthquake sequences. In detail, surface ruptures formed on the sub-parallel Pisia and Skinos Faults, with an 8 km along-strike overlap zone, separated across strike by < 2 km. The largest coseismic offsets occurred in the overlap zone. The 41-year-old ruptures are still well preserved as bedrock fault plane lichen-free stripes and colluvial ruptures, allowing detailed structural mapping at 213 rupture localities. A comparison between our measurements and Jackson et al. (1982) showed no overall consistent signal of post-seismic slip as some of our measurements were greater and some smaller than those recorded in 1981. The ruptures produced a single maximum asymmetric profile (Pisia: maximum throw of 223 cm) and a double maxima profile (Skinos: maximum throw of 109 cm and 130 cm). The shapes of the profiles differed in previous earthquakes on these faults, as evidenced by an older lichen-free stripe, implying non-characteristic earthquakes. Summing the two overlapping throw profiles across-strike reveals a single maximum symmetric bell-like profile. Using the above observations on coseismic offsets, kinematic information, and the geometry of faults, a rupture scenario has been proposed in terms of fault bends and corrugation orientations which suggests that parts of each fault may have ruptured in each earthquake.
date: 2024-05
date_type: published
publisher: Elsevier BV
official_url: https://doi.org/10.1016/j.jsg.2024.105117
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2268564
doi: 10.1016/j.jsg.2024.105117
lyricists_name: Sgambato, Claudia
lyricists_name: Roberts, Gerald
lyricists_name: Faure Walker, Joanna
lyricists_id: CSGAM93
lyricists_id: GPROB04
lyricists_id: JPFAU41
actors_name: Flynn, Bernadette
actors_id: BFFLY94
actors_role: owner
full_text_status: public
publication: Journal of Structural Geology
volume: 182
article_number: 105117
issn: 0191-8141
citation:        Mitchell, S;    Roberts, GP;    Faure Walker, JP;    Iezzi, F;    Sgambato, C;    Robertson, J;    Mildon, ZK;             ... Rugen, EJ; + view all <#>        Mitchell, S;  Roberts, GP;  Faure Walker, JP;  Iezzi, F;  Sgambato, C;  Robertson, J;  Mildon, ZK;  Ganas, A;  Papanikolaou, ID;  Rugen, EJ;   - view fewer <#>    (2024)    The relationship between kinematics and fault geometry for surface coseismic ruptures on across-strike faults: New observations of slip vectors and displacements along the Pisia and Skinos faults from the 1981 Eastern Gulf of Corinth, Greece earthquakes.                   Journal of Structural Geology , 182     , Article 105117.  10.1016/j.jsg.2024.105117 <https://doi.org/10.1016/j.jsg.2024.105117>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10191318/1/1-s2.0-S0191814124000695-main.pdf