Wavelet analysis of the seismograms of the 2004 Sumatra-Andaman earthquake and its application to tsunami early warning [PDF]
, 2006 We applied the wavelet transform in an attempt to detect long-period components early in a seismogram. We analyzed the displacement seismograms of the 26 December 2004 Sumatra-Andaman earthquake (Mw = 9.2) and the 28 March 2005 Nias earthquake (Mw = 8.7).
Kanamori, Hiroo, Lockwood, Oliver G.
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Anelastic sensitivity kernels with parsimonious storage for adjoint tomography and full waveform inversion [PDF]
, 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
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, 2007 New Theory of the Earth is an interdisciplinary advanced textbook on all aspects of the interior of the Earth and its origin, composition, and evolution: geophysics, geochemistry, dynamics, convection, mineralogy, volcanism, energetics and thermal ...
Anderson, Don L.
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Transformation seismology: composite soil lenses for steering surface elastic Rayleigh waves. [PDF]
, 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
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Conditioning bounds for traveltime tomography in layered media [PDF]
, 2011 This paper revisits the problem of recovering a smooth, isotropic, layered wave speed profile from surface traveltime information. While it is classic knowledge that the diving (refracted) rays classically determine the wave speed in a weakly well-posed ...
Abramowitz M +18 more
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Subsonic near-surface P-velocity and low S-velocity observations using propagator inversion [PDF]
, 2005 Detailed knowledge of near-surface P- and S-wave velocities is important for processing and interpreting multicomponent land seismic data because (1) the entire wavefield passes through and is influenced by the near-surface soil conditions, (2) both ...
Curtis, A., Trampert, J., van Vossen, R.
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Seismological structure of the 1.8 Ga Trans-Hudson Orogen of North America [PDF]
, 2016 Precambrian tectonic processes are debated: what was the nature and scale of orogenic events on the younger, hotter, and more ductile Earth? Northern Hudson Bay records the Paleoproterozoic collision between the Western Churchill and Superior plates—the ∼
Abbott +62 more
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Microelectromechanical system gravimeters as a new tool for gravity imaging [PDF]
, 2018 A microelectromechanical system (MEMS) gravimeter has been manufactured with a sensitivity of 40 ppb in an integration time of 1 s. This sensor has been used to measure the Earth tides: the elastic deformation of the globe due to tidal forces.
Bramsiepe, Steven G. +8 more
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A Seismological and Geophysical Database of Kos Island: 10 Years of Digital Records [PDF]
Earth, 2021 A ten-year complete seismological database is evaluated in the present work. These data are provided for events with magnitude ML ≥ 1.0, which have occurred in Eastern Greece and, more specifically, in Kos Island. Several selection criteria are applied and, hence, a catalog of the seismological records is compiled.
openaire +2 more sources
Dynamic inverse problem in a weakly laterally inhomogeneous medium [PDF]
, 2005 An inverse problem of wave propagation into a weakly laterally inhomogeneous medium occupying a half-space is considered in the acoustic approximation. The half-space consists of an upper layer and a semi-infinite bottom separated with an interface.
Blagovestchenskii, A. S. +2 more
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