Results 31 to 40 of about 27,395 (224)
Seismic gravity-gradient noise in interferometric gravitational-wave detectors [PDF]
, 1998 When ambient seismic waves pass near and under an interferometric gravitational-wave detector, they induce density perturbations in the Earth, which in turn produce fluctuating gravitational forces on the interferometer’s test masses.
Hughes, Scott A., Thorne, Kip S.
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Terrae Didatica, 2019 Rainfall-induced variations in pore water pressures are the most common sources of significant disasters like landslides, dams’ failure, and other structural collapses. This study aimed at communicating preliminary results of seasonal monitoring of the Sobradinho landslide, Brasilia, Brazil, using ambient seismic noise.
Yawar Hussain +7 more
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On the Green's function emergence from interferometry of seismic wave fields generated in high-melt glaciers: implications for passive imaging and monitoring [PDF]
The Cryosphere, 2020 Ambient noise seismology has revolutionized seismic characterization of the Earth's crust from local to global scales. The estimate of Green's function (GF) between two receivers, representing the impulse response of elastic media, can be reconstructed ...
A. Sergeant +9 more
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Coherence-based approaches for estimating the composition of the seismic wavefield [PDF]
, 2019 As new techniques exploiting the Earth's ambient seismic noise field are developed and applied, such as for the observation of temporal changes in seismic velocity structure, it is crucial to quantify the precision with which wave‐type measurements can ...
Bowden, D. C. +7 more
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Synchronizing seismic networks with ambient noise [PDF]
Geophysical Journal International, 2008 SUMMARY The technique of retrieving Green’s functions by pairwise correlation of a random wavefield is used to estimate the stability of the timing system of a seismic network. The method is demonstrated with data from a network consisting of stations with four independent clocks and GPS-receivers.
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A novel horizontal to vertical spectral ratio approach in a wired structural health monitoring system [PDF]
Journal of Sensors and Sensor Systems, 2014 This work studies the effect ambient seismic noise can have on building constructions, in comparison with the traditional study of strong seismic motion in buildings, for the purpose of structural health monitoring. Traditionally, engineers have observed
F. P. Pentaris
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Remote Sensing, 2023 Near-surface structure investigation plays an important role in studying shallow active faults and has various engineering applications. Therefore, we developed a near-surface structure investigation method using ambient noise in a water environment ...
Jie Shao +4 more
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Seismic Gradiometry using Ambient Seismic Noise in an Anisotropic Earth [PDF]
Geophysical Journal International, 2017 We introduce a wavefield gradiometry technique to estimate both isotropic and anisotropic local medium characteristics from short recordings of seismic signals by inverting a wave equation. The method exploits the information in the spatial gradients of a seismic wavefield that are calculated using dense deployments of seismic arrays.
De Ridder, Sjoerd +1 more
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Applied Sciences, 2022 This work is devoted to the analysis of the background seismic noise acquired at the volcanoes (Campi Flegrei caldera, Ischia island, and Vesuvius) belonging to the Neapolitan volcanic district (Italy), and at the Colima volcano (Mexico).
Diego Rincon-Yanez +4 more
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Microtremor response of a mass movement in Federal District of Brazil [PDF]
, 2017 The present study provides a brief description of the ambient noise recorded at a slow moving mass movement in Ribeirão Contagem Basin. The area is an interesting natural laboratory as river detachment processes in a number of different stages can be ...
Cárdenas-Soto, Martin +5 more
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