Kelin Wang's research while affiliated with Natural Resources Canada and other places

... As an alternative explanation for the rock-models discrepancy, it has been proposed that the exhumation of rocks is rare and that they may likely sample snapshots of a subduction zone thermal evolution that are warmer on average than the conditions in present day subduction zones (van Keken et al. 2018;Wang et al. 2023). Suggestions that exhumation of rocks occurs with some regularity during subduction initiation and termination provides geological support for this explanation (Agard et al. 2009). ...

... We use only the Fourier transform of the Love number for viscoelastic deformation caused by the impulse force (Peltier 1974 ;Mitrovica & Davis 1995 ;Michel & Boy 2022 ), and this calculation does not involve any numerical integ ral transfor m operator. This method fundamentally avoids the dependence and nonuniversality of the inverse integ ral transfor mation method for a special earth model (Mitrovica & Peltier 1992 ;Piersanti et al. 1995 ;Pollitz 1997 ;Tanaka et al. 2006 ;Tanaka et al. 2011 ;Zhou & Wang 2023 ). One only need to use different forms of the complex Lam é parameter to calculate the complex Love number (Yuen & Peltier 1982 ;Spada 2008 ;Lau & Holtzman 2019 ). ...

... The resolution of the lagoon records is not precise enough to distinguish pre-or post-seismic deformation (Hayward et al., 2016). Post-seismic deformation from afterslip and visco-elastic rebound, however, is much smaller than paleoseismic record uncertainties (<4% peak coseismic slip) (e.g., Luo & Wang, 2022). An additional 1.6-2 m of subsidence since over the last c. ...

... We employ the finite element code PGCviscl-3D, which allows the incorporation of spatially variable upper-plate properties. Technical details of the finite-element mesh and modeling methods can be found in Carvajal et al. (2022), who used the same code for a modeling study of subduction zone earthquake and tsunami processes. In Figure 13, we compare the modeled deformation fields of two contrasting scenarios that employ uniform versus heterogeneous upper-plate rigidities, each with the same assigned slip distribution. ...

... Dehydration is by far the most prevailing hypothesis for the physical mechanism of intermediate-depth earthquakes in the upper plane. However, the physical mechanism for fluid to penetrate tens of kilometers below the slab surface to arrive at the lower plane is still under debate (Pennacchioni et al., 2020;Scambelluri et al., 2017;Shi et al., 2022). Figures 1 and 4b show that the M7 Miyagi earthquake, one of the largest aftershocks of the Tohoku earthquake, occurred near the enhanced intermediate-depth earthquake activities in the lower plane. ...

... The important point is that the proxy surface load model in both the Table 1 therein. This is the maximum uplift rate, also consistent with the uplift reported by Russo et al. (2022) experiments is constantly accelerating, driving a constantly evolving GIA response as vertical surface uplift even in the elastic case. ...

... Hacker et al. (2003) predicted that the volume fraction of talc in the subduction zone can reach as high as 41 vol% in mantle wedge serpentinites. In addition, Peacock and Wang (2021) believe that talc is stable in H 2 O-undersaturated ultramafic (mantle) rocks at depths of 70-80 km and T < ∼650°C. Therefore, talc may be the secondary dominant hydrous mineral that cannot be negligible Figure 5. ...

... Determining regions with higher earthquake potential is a complicated endeavor because the occurrence of large earthquakes depends on numerous factors including fault geometry and frictional properties, regional stress regimes, lithosphere structures, and strain accumulation stage (Scholz, 1998;Wang et al., 2021). We preliminarily obtained earthquake recurrence intervals and identified regions of higher seismic hazard based on the b-value estimated using micro-earthquakes and on geodetic strain rates inferred from GNSS observations. ...

... Entire thin-section scans were made using an Epson Perfection Pro scanner in plane-polarized and cross-polarized light. We use our microscopic observations to search for evidence for grain-scale brittle, crystal-plastic, diffusive mass transfer, and alteration-related deformation (c.f., Rutter, 1986;Blenkinsop et al., 2020;Wang, 2021). Systematic X-ray diffraction (XRD) analyses were done to determine whole-rock mineralogy and to constrain rock compositions, possible depth ranges, and fluid-rock interactions in the fault-related rocks. ...

... The upper continental mantle, oceanic upper mantle, and weak layer were all assumed to have a Burgers rheology, while the lower mantle was given a Maxwell rheology with a viscosity of 10 20 Pa·s. A fully elastic mantle wedge was also anticipated to exist at the interface between the continental crust and the slab; this feature (cold nose) is thought to be associated with the post-seismic uplift on the western side of Honshu Island (Luo & Wang, 2021). The shear modulus and density of the fully elastic part (slab, continental crust, and oceanic crust) were set to 48 GPa and 3.3 × 10 3 kg/m 3 , respectively, and the preliminary reference earth model (PREM, Dziewonski & Anderson, 1981) was utilized to characterize the viscoelastic part as shown in Fig. S4. ...