Abstract The ongoing India‐Asia collision principally regulates the Cenozoic tectonic deformation of Asian interior, and builds a far‐away but active spectacular intraplate orogen—Tian Shan. However, deep processes dynamics far‐field propagation resultant Tian Shan building remain ambiguous. Here, we construct systematic numerical models with variable thermo‐rheological properties orogen‐featured blocks convergence rates, which reveal that effect on is strongly controlled by direct Indian...

Abstract In this study, we calculated the Coulomb stress change before and after 2018 Palu earthquake (Mw 7.5) induced by historical large earthquakes on around Palu‐Koro fault (PKF) within Sulawesi Island, Indonesia. We found that 1996 7.9) Minahassa thrust likely promoted loading its hypocenter. Stress shadows in PKF impacted rupture’s southward unilateral propagation termination. increases two seismic gaps to north south ends of have resulted increased hazards, calling close attention...

Abstract The thermal structure of East Asian continental lithosphere is critical for understanding its diffuse and variable intracontinental deformation in the Cenozoic. Here, we present a three‐dimensional model lithospheric Asia, using latest conductivity radiogenic heat production measurements mainland China. results show great lateral heterogeneity temperature. crust orogenic belts such as Tibetan Plateau, Mongolia Tian Shan orogen, Northeast China, generally characterized by high...

Abstract We determine 3‐D isotropic and anisotropic P‐wave velocity models beneath eastern SE Asia by inverting a large number of arrival times selected from the ISC‐EHB database. Our results reveal detailed structures subducting South China Sea (SCS), Negros, Molucca Sea, Philippine Banda slabs, previously subducted Proto‐SCS slab remnants other paleo showing long‐lived subductions these oceanic slabs in Asia. There is an obvious change subduction angle SCS at 18°N along Manila trench....

Abstract Earthquake interaction across multiple time scales can reveal complex stress evolution and rupture patterns. Here, we investigate the change's role in 2023 Mw 7.8 7.6 earthquake doublet along Eastern Anatolian Fault (EAF), using simulations of 21 historical earthquakes (M ≥ 6.1) from 1822 to 2023. Focusing on six cascading sub-events during Kahramanmaraş Sequence, how one sub-event's alteration impact emergence dynamics subsequent sub-events. Our analysis unveils that was deferred...

Abstract The 2008 Wenchuan earthquake (Mw 7.9) unilaterally ruptured the Longmen Shan fault (LMSF) along eastern Tibet. rupture propagated about 270 km northeastward, whereas it only 20 southwestward strike of fault. Although a significant attention has been paid to question predominantly unilateral propagation, primary reasons for this type propagation remain unclear. In research, we examined change Coulomb stress LMSF caused by historical earthquakes near and on from 1725 2008. We found...

Abstract N‐S trending rifts are widely distributed in southern Tibet, suggesting that this region is under E‐W extension, behind the collision between Eurasia and India plates. Geophysical anomalies Miocene magma extrusions indicate presence of dispersed weak zones middle to lower crust Tibet. These partially located underneath rifting systems. In order study formation zones, we have developed a high‐resolution 3‐D thermomechanical model continental lithosphere with bidirectional...

Abstract There are two seismic gaps in the southwestern section of Longmen Shan Fault (LMSF): (1) gap amid ruptures 2008 Wenchuan and 2013 Lushan earthquakes (2) southwestern‐most LMSF. Conflicting explanations have previously been proposed to estimate hazards associated with these gaps. In this study, we used a complete earthquake (M ≥ 6.0) catalogue for past 300 years re‐evaluate by calculating change Coulomb stress caused nearby large earthquakes. When combined inter‐seismic tectonic...

Abstract Earthquake interaction across multiple time scales can reveal complex stress evolution and rupture patterns. Here, we investigate the role of static change in 2023 Mw 7.8 7.6 earthquake doublet along East Anatolian Fault (EAF), using simulations 19 historical earthquakes (M ≥ 6.1) from 1822 to 2023. Focusing on six cascading sub‐events during Kahramanmaraş doublet, how one sub‐event's alteration impact emergence subsequent sub‐events. Our analysis unveils that was delayed due shadow...

Abstract The 2021 Mw 7.4 Maduo earthquake in Qinghai, China, filled the seismic gap eastern segment of northern boundary Bayan Har Block, and four other M > 7 historical strong earthquakes occurred at northeastern end Block within a period 80 years before earthquake. This series large events provides an excellent example for investigating stress transfer fault interactions on continent. In this study, we established viscoelastic numerical model to calculate after produced by Block. We...

Abstract The 2022 Mw 6.6 Menyuan earthquake occurred in the Qilian‐Haiyuan fault system northeastern Tibet. To investigate mechanism behind and seismic hazards (SHs) of Tianzhu gap, spatiotemporal stress variations on zone were assessed before after by modeling changes caused 12 historical large earthquakes during last century. results showed that was delayed due to a shadow 1927 8.3 Gulang earthquake. also covers middle section gap inhibits its activities some extent. By preventing rupture...

The southern Longmen Shan region has seismically active faults in its western part, the Beichuan fault (BCF) and Pengguan (PGF), both rooting on a deep décollement, flat topography eastern part that marks current deformation front due to thrusting from shallow décollement. concurrent faulting at rear is separated by Sichuan Basin. objective of this contribution propose mechanical approach based limit analysis theory estimate frictional properties could explain how heterogeneous wedge be...

Abstract The 2021 Mw 7.3 Maduo earthquake ruptured the Kunlun Pass‐Jiangcuo fault (KPJF) in Bayan Har Block (BHB) northeastern Tibet. To explore reasons behind and seismic hazards that followed this event BHB, we simulated Coulomb stress changes before after caused by 27 large historical earthquakes past centuries. We found was delayed for approximately 157 years because of shadow resulting from interaction BHB. This mainly controlled 1937 7.5 on Eastern (EKLF) 1947 7.75 Dari fault. created...

Abstract Exploring geodynamo's scaling laws is of great importance when a tremendous gap still lies between realistic physics and estimated model parameters. Existing need to be tested by numerical simulations. To boost these, taking the outer core viscosity , we studied its impacts on weak strong field geodynamo outputs varying in two orders magnitudes. In mode, fluid velocity varies with law . While very slowly The magnetic does not change much driving force too ( ) but decreases operates...

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Boussinesq-type wave models improve traditional shallow water by incorporating higher-order terms that account for dispersion effects during propagation. Essentially, they are applicable when the number times depth (kd) does not satisfy condition (kd<<1). BWEFoam, introduced in this work, is implemented finite-volume-method based OpenFOAM framework. The high-order equations employed as governing to incorporate effect of dispersion. bottom friction and momentum diffusion also integrated...

Ultra-low velocity zones (ULVZs) above the core-mantle boundary (CMB) are observed structures that may be related to liquid outer-core. As "thin patches" of dramatically low seismic-wave velocity, they occasionally found near base mantle plumes or in/near high speed regions CMB. The causes their morphology and geodynamics remain unclear, simulation high-density melts diverge from observations. We introduce a two-dimensional time-dependent Stokes two-phase flow (with melt migration) numerical...