Results 131 to 140 of about 66,350 (296)
Journal of Geophysical Research: Solid Earth, Volume 130, Issue 7, July 2025.Abstract Estimates of the percentage of moderate to large crustal earthquakes (mainshocks) that have foreshocks (the foreshock rate) vary widely: Recent estimates in Southern California using an enhanced catalog range between 19% and 72%. Enhanced catalogs seem to reveal more foreshocks, possibly providing new constraints on nucleation mechanisms, but ...
R. Azad Khan +3 more
wiley +1 more source
Seismic Evidence of Impact Breccia and Unlithified Sediments Under Hiawatha Glacier
Journal of Geophysical Research: Earth Surface, Volume 130, Issue 7, July 2025.Abstract Hiawatha Crater in northwest Greenland is one of only two putative impact craters under an ice sheet. Hiawatha therefore offers a rare proxy for understanding the interactions between active glacial dynamics and impact craters on other planetary bodies.
Rishi Chandra +7 more
wiley +1 more source
The Origins of Africa's Upper Mantle Discontinuities
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 7, July 2025.Abstract Enigmatic discontinuities in the upper mantle beneath Africa, such as the mid‐lithosphere and X‐discontinuities, have prompted various theories regarding their causes. However, most studies rely on S‐to‐P receiver functions, raising concerns about resolution.
Jean‐Joel Legre, Tolulope Olugboji
wiley +1 more source
Journal of Geophysical Research: Solid Earth, Volume 130, Issue 7, July 2025.Abstract The nonlinear mechanical responses of rocks and soils to seismic waves play an important role in earthquake physics, influencing ground motion from source to site. Continuous geophysical monitoring, such as ambient noise interferometry, has revealed co‐seismic wave speed reductions extending tens of kilometers from earthquake sources. However,
Zihua Niu +5 more
wiley +1 more source
Normative expression and accurate understanding of focal mechanism parameters
Geosystems and Geoenvironment, 2023 This paper aims at the understanding of the relationship between the upper and lower hemisphere projection maps of the focal sphere, the correct reading of the focal mechanism parameters on the projection diagram, and to investigate if there is ...
Xuecan Jia +3 more
doaj
Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.Abstract Rifting and magmatism are fundamental geological processes in the evolution of the lithosphere; however, quantitative investigations of their relationship are rare. The Okavango Rift Zone (ORZ) is in the early stages of rifting and magmatic activity and thus is an ideal locale to study this relationship.
Tuo Wang +3 more
wiley +1 more source
Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.Abstract Assessing Radiative Power (RP) output is essential for monitoring and understanding volcanic systems. While Mid‐Infrared channels are used to assess thermal outputs at volcanoes exhibiting effusive activity, Thermal‐InfraRed (TIR) bands are better suited for measuring moderate‐to‐low‐temperature (≲600 K) features, such as those associated with
Simone Aveni +4 more
wiley +1 more source
Interesting seismology （18）：CT and NMR from medicine into seismology
地震科学进展, 2020 Rui Feng
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