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Seismology is the study of stress and changes in stress within the Earth and other planetary bodies, particularly earthquakes caused by slip and rupture along faults and by magmatic activity. The field is also concerned with earthquake risks and hazards, as well as the propagation of elastic waves through the surface of the Earth.
Through the detection of postcursors of shear waves diffracted at the core–mantle boundary, a zone of ultralow seismic velocities has been identified at the base of the mantle beneath the Himalayas. The presence of this zone is probably linked to a subducted slab remnant that is driving mantle flow in the region.
Earthquakes not only affect tree growth directly by causing physical injury to individual trees but also indirectly by inducing changes in forest habitats. We established linkage between tree-ring series and seismic disturbances and found that prominent and lasting seismic legacies in drier areas may be due to an increased infiltration of precipitation through earthquake-induced soil cracks.
A record of lower mantle flow from 50 million years ago is preserved in the Pacific region and provides evidence for past lower mantle deformation, according to seismic anisotropy tomography.
The complex signals which precede large earthquake mainshocks highlight a juxtaposition of diverse driving mechanisms and the important influence of boundary conditions, according to a synthesis of recent developments in observing seismic and geodetic earthquake precursor signals.
The Cenozoic eastward growth of the Tibetan Plateau can be explained by slab tear and the resulting mantle flow beneath the eastern region, according to analysis of seismic tomography, tectonic and magmatic records of the Indian mantle lithosphere.
Crustal permeability evolution predicted from observed MEQs using Bi-LSTM models. MEQ-to-permeability relations confirmed across multiple field data sets using transfer learning with scaling relationships confirmed using physics-based models.
Astrophysicist Avi Loeb says that an interstellar meteor showered Earth with particles. At a planetary-science conference this week, researchers begged to differ.
Through the detection of postcursors of shear waves diffracted at the core–mantle boundary, a zone of ultralow seismic velocities has been identified at the base of the mantle beneath the Himalayas. The presence of this zone is probably linked to a subducted slab remnant that is driving mantle flow in the region.
Earthquakes not only affect tree growth directly by causing physical injury to individual trees but also indirectly by inducing changes in forest habitats. We established linkage between tree-ring series and seismic disturbances and found that prominent and lasting seismic legacies in drier areas may be due to an increased infiltration of precipitation through earthquake-induced soil cracks.
Megathrust earthquakes along subduction zones present significant hazards. Evidence from the South Chile subduction zone suggests that the structure and fluid distribution of the megathrust interface governs the size and timing of large earthquakes.