Credit: NOAA Researchers found a unique seismic signal just before the January 2022 eruption of the Hunga Tonga-Hunga Ha’apai volcano, potentially offering early warnings for oceanic eruptions. By ...
The solid Earth's medium is heterogeneous over a wide range of scales. Seismological observations, including envelope broadening with increasing distance from an earthquake source and the excitation ...
New trigger proposed for record-smashing 2022 Tonga eruption Previously unstudied data from a seismic wave, detected 750 kilometers from the seamount, may bolster tsunami early-warning systems ...
Caltech researchers have developed a new method to study the earth's structure deep beneath the surface, at the boundary between Earth's brittle crust ...
A satellite image of the Tonga eruption. Images: NASA Earth Observatory / Joshua Stevens / Lauren Dauphin / CALIPSO data from NASA/CNES, MODIS and VIIRS data from NASA EOSDIS LANCE and GIBS ...
Abstract: This study introduces a distributional finite-difference method (DFDM) for modelling the propagation of elastic waves in heterogeneous media in the time domain. DFDM decomposes the modelling ...
This course gives a basis for understanding how elastic waves, generated by earthquakes or controlled sources, propagate through the Earth and thus provide information about its interior. Students ...