To explore the west-east variations in underthrusting Indian lithosphere, we investigate lithospheric structure using P and S receiver functions obtained from a linear array of 19 broadband stations spanning Tethyan Himalaya at 85.5–88.5°E. Our observations Main Himalayan Thrust (MHT) Moho serving as top bottom boundaries depths 42–54 km 60–72 km, respectively, suggest that thinning lower crust...

Excitations of seismic background noises are mostly related to fluid disturbances in the atmosphere, ocean and the solid Earth. Earthquakes have not been considered as a stationary excitation source because they occur intermittently. Here we report that acoustic-coupled Rayleigh waves (at 0.7-2.0 Hz) travelling in the ocean and marine sediments, retrieved by correlating ambient noise on a hydro...

Abstract The closure of a subduction zone with continental terrane collision and accretion is generally thought to be followed by the initiation new in neighboring oceanic plate, which suggested happen repeatedly during evolution Tethyan system. Although Indian‐Asian has occurred for >50 Myrs, there still no clear sign (SI) northern Indian puzzling issue requires further investigations. This...

Abstract A model of the thermal and hydrodynamic structure subduction zone is proposed. This includes free convection flows in asthenospheric layer C (mantle transition zone). Temperature profiles subducting lithospheric plate, as well continental limb zone, are presented. The heat flux due to friction at contact between plate significantly affects transfer and, consequently, temperature field ...

Transition zone slab deformation influences Earth’s thermal, chemical, and tectonic evolution. However, the mechanisms responsible for the wide range of imaged slab morphologies remain debated. Here we use 2-D thermo-mechanical models with a mobile trench, an overriding plate, a temperature and stress-dependent rheology, and a 10, 30, or 100-fold increase in lower mantle viscosity, to investiga...