Results 11 to 20 of about 15,948 (253)

SASSIER22: Full‐Waveform Tomography of the Eastern Indonesian Region That Includes Topography, Bathymetry, and the Fluid Ocean

open access: yesGeochemistry, Geophysics, Geosystems, 2022
We present a new 3‐D seismic structural model of the eastern Indonesian region and its surroundings from full‐waveform inversion (FWI) that exploits seismic data filtered at periods between 15–150 s.
Deborah Wehner   +7 more
doaj   +1 more source

Modeling seismic wave propagation in the Loess Plateau using a viscoacoustic wave equation with explicitly expressed quality factor

open access: yesFrontiers in Earth Science, 2023
The thick Quaternary loess on the Loess Plateau of China produces strong seismic attenuation, resulting in weak reflections from subsurface exploration targets.
Ziduo Hu   +6 more
doaj   +1 more source

Earth model-space exploration in Southern California: Influence of topography, geotechnical layer, and attenuation on wavefield accuracy

open access: yesFrontiers in Earth Science, 2022
Accurately predicting the seismic wavefield is important for physics-based earthquake hazard studies and is dependent on an accurate source model, a good model of the subsurface geology, and the full physics of wave propagation.
Rasheed Ajala   +2 more
doaj   +1 more source

Lowermost Mantle Structure Beneath the Central Pacific Ocean: Ultralow Velocity Zones and Seismic Anisotropy

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Ultralow velocity zones (ULVZs) and seismic anisotropy are both commonly detected in the lowermost mantle at the edges of the two antipodal large low velocity provinces (LLVPs).
Jonathan Wolf, Maureen D. Long
doaj   +1 more source

Comparison of straight-ray and curved-ray surface wave tomography approaches in near-surface studies [PDF]

open access: yesSolid Earth, 2022
Surface waves are widely used to model shear-wave velocity of the subsurface. Surface wave tomography (SWT) has recently gained popularity for near-surface studies.
M. Karimpour, E. Slob, L. V. Socco
doaj   +1 more source

ADI-based, conditionally stable schemes for seismic P-wave and elastic wave propagation problems [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2022
The modeling of P-waves has essential applications in seismology. This is because the detection of the P-waves is the first warning sign of the incoming earthquake. Thus, P-wave detection is an important part of an earthquake monitoring system.
Marcin Łoś   +3 more
doaj   +1 more source

Digital library for computational seismology [PDF]

open access: yesEos, Transactions American Geophysical Union, 2007
Computational methodologies play an increasingly important role in Earth sciences. However, Earth science curricula in general often do not equip scientists with the necessary background in mathematical and computational aspects of the rapidly expanding field of simulation technology.This lack of preparation applies in particular to the field of ...
Frantisek Gallovic   +3 more
openaire   +1 more source

Generalized Pattern Search Algorithm for Crustal Modeling

open access: yesComputation, 2020
In computational seismology, receiver functions represent the impulse response for the earth structure beneath a seismic station and, in general, these are functionals that show several seismic phases in the time-domain related to discontinuities within ...
Mulugeta Dugda, Farzad Moazzami
doaj   +1 more source

The singing firn

open access: yesAnnals of Glaciology, 2022
Antarctic firn presents an exotic seismological environment in which the behaviors of propagating waves can be significantly at odds with those in other Earth media.
Julien Chaput   +2 more
doaj   +1 more source

Transformation seismology: composite soil lenses for steering surface elastic Rayleigh waves. [PDF]

open access: yes, 2016
Metamaterials are artificially structured media that exibit properties beyond those usually encountered in nature. Typically they are developed for electromagnetic waves at millimetric down to nanometric scales, or for acoustics, at centimeter scales. By
Colombi, A   +3 more
core   +2 more sources

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