Results 41 to 50 of about 35,177 (246)

Ground penetrating radar assessment of historical buildings: the study of the roofs, columns and ground of Santa Maria del Mar, in Barcelona / GPR assessment of the basilica Santa Maria del Mar [PDF]

open access: yes, 2017
Santa Maria del Mar is a magnificent gothic church built between 1329 and 1383 in a neighbourhood outside the city walls, over the remains of a more ancient church.
Caselles Magallón, Josep Oriol   +2 more
core   +1 more source

Shear wave structure of a transect of the Los Angeles basin from multimode surface waves and H/V spectral ratio analysis [PDF]

open access: yes, 2020
We use broad-band stations of the ‘Los Angeles Syncline Seismic Interferometry Experiment’ (LASSIE) to perform a joint inversion of the Horizontal to Vertical spectral ratios (H/V) and multimode dispersion curves (phase and group velocity) for both ...
Beroza, Gregory C.   +3 more
core  

Anelastic sensitivity kernels with parsimonious storage for adjoint tomography and full waveform inversion [PDF]

open access: yes, 2016
We introduce a technique to compute exact anelastic sensitivity kernels in the time domain using parsimonious disk storage. The method is based on a reordering of the time loop of time-domain forward/adjoint wave propagation solvers combined with the use
Bozdag, Ebru   +6 more
core   +5 more sources

Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement

open access: yesGeophysical Monograph Series, Page 27-82., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jennifer Kasbohm   +2 more
wiley  

+4 more sources

Seismic transmission tomography: determination of the elastic properties of building structures (some examples)

open access: yesAnnals of Geophysics, 2000
This paper is a general review on seismic transmission tomography considering data acquisition and processing. Some questions on linear and non linear inversions are tackled, and advice given on the choice of the best damping factor.
E. Cardarelli
doaj   +1 more source

Evidence of micro-continent entrainment during crustal accretion [PDF]

open access: yes, 2015
Peer ...
Bodin, T.   +7 more
core   +1 more source

Seismic fault identification method based on CBAM-TransUNet

open access: yesMeitan xuebao
Detection and identification of faults are crucial in the process of coal exploration and mining, and the traditional manual method of fault interpretation can no longer meet the needs of actual production, and the deep learning-based seismic fault ...
Xin WANG   +4 more
doaj   +1 more source

IMAGING OF 3-D SEISMIC TOMOGRAPHY FOR INTERNAL STRUCTURE UNDER THE MOUNTAIN MERAPI USING THE LOTOS-10 SOFTWARE

open access: yesSpektra: Jurnal Fisika dan Aplikasinya, 2018
Abstrak Telah dilakukan penelitian pencitraan tomografi seismik 3D untuk stuktur internal di bawah Gunung Merapi dengan empat stasiun pencatat gempa dan gempa vulkanik sebagai sumber sinar gelombang.
Ayu Wita Sari, Gede Bayu Suparta
doaj   +1 more source

Wave Equation‐Based Local Traveltime Inversion

open access: yesEarth and Space Science, 2020
Full waveform inversion (FWI) is a strongly nonlinear optimization problem, which suffers from cycle skipping when the initial velocity model is not good enough or the seismic data lack low frequencies.
Y. Hu, L. G. Han, Y. S. Liu, Z. Y. Jin
doaj   +1 more source

Finite-frequency sensitivity of body waves to anisotropy based upon adjoint methods [PDF]

open access: yes, 2007
We investigate the sensitivity of finite-frequency body-wave observables to mantle anisotropy based upon kernels calculated by combining adjoint methods and spectral-element modelling of seismic wave propagation.
Liu, Qinya   +3 more
core   +1 more source

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