Afterslip thus appears to relieve significant stress along the Rivera plate subduction interface, including the area of the interface between a region of deep non-volcanic tremor and the shallower seismogenic zone. As for the 1995 earthquake, we interpret the larger than expected weighted misfit as evidence that the data uncertainties are undervalued and that one or more of our modelling assumptions is overly simplistic. 2014; Wiseman etal. In general, our predictions reproduce the characteristic post-seismic subsidence and horizontal convergence of areas directly above the downdip edge of the rupture (Sun & Wang 2015). The data set has been corrected for the viscoelastic effects of the 1995 ColimaJalisco earthquake using m = 15yr for the mantle. Published by Oxford University Press, This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (, Geophysics-steered self-supervised learning for deconvolution, Local estimation of quasi-geostrophic flows in Earths core, Bayesian Detectability of Induced Polarisation in Airborne Electromagnetic Data, Analytical computation of total topographic torque at the Core-Mantle Boundary and its impact on tidally driven Length-of-Day variations, The ground deformation of the south-eastern flank of Mount Etna monitored by GNSS and SAR interferometry from 2016 to 2019, Volume 234, Issue 1, July 2023 (In Progress), Volume 233, Issue 3, June 2023 (In Progress), Volume 233, Issue 2, May 2023 (In Progress), Volume 233, Issue 1, April 2023 (In Progress), Geomagnetism, Rock Magnetism and Palaeomagnetism, Marine Geosciences and Applied Geophysics, https://geodynamics.org/cig/software/relax/, https://doi.org/10.1016/j.epsl.2013.02.020, https://doi.org/10.1016/S0040-1951(99)00309-1, https://doi.org/10.1016/j.pepi.2004.09.006, https://doi.org/10.1046/j.1365-246X.2001.00472.x, https://doi.org/10.1016/j.tecto.2012.12.027, https://doi.org/10.1016/j.pepi.2004.05.006, https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model, Receive exclusive offers and updates from Oxford Academic, 40km, with possible overlap with the seismogenic zone in Guerrero, Copyright 2023 The Royal Astronomical Society. (b) Vertical velocities. (2002) show that a combination of fault afterslip and viscoelastic rebound are needed to account for the observed transient post-seismic deformation. The afterslip solutions for both earthquakes suggest that most afterslip coincided with the rupture areas or occurred farther downdip and had cumulative moments similar to or larger than the co-seismic moments. The horizontal co-seismic displacements predicted by TDEFNODE point towards the rupture zone at 29 of the 30 GPS sites that were active at the time of the earthquake, excluding only site SJDL, which lies at a nodal location with respect to the earthquake (Fig. (2016). 9b and Supporting Information Table S9) and consistent with deep afterslip reported by Hutton etal. Afterslip is particularly problematic because: Find out more from Tom Brocher and here: https://www.google.com/amp/s/ucrtoday.ucr.edu/38678/amp Select one: a. RT: Rivera transform. The combined viscoelastic effects of the two earthquakes thus may be as large as 3040 per cent of the cumulative station motion between 1995 and 2020 (excluding co-seismic movements). They predicted that the afterslip at the deep roots of faults deformation most, Freed, 2005 ) in this work, we expect its afterslip to last longer Has warned that people in the seismic sequence in May 2012 was characterized by two which! The vertical components at continuous stations INEG, CUVA, UAGU and TNZA were all discarded due to non-tectonic subsidence at each site that we attribute to groundwater withdrawal. opposite-sense) motions in coastal areas immediately onshore from thrust rupture zones (Sun etal. 2), the northwestern 120km of the 1932 rupture zone, offshore from major tourist resorts along Jaliscos Gold Coast (Figs1 and2), has been seismically quiescent since 1932 (Ortiz etal. 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