Results 21 to 30 of about 1,819 (186)

Synchronizing seismic networks with ambient noise [PDF]

open access: yesGeophysical 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.
openaire   +3 more sources

On the Green's function emergence from interferometry of seismic wave fields generated in high-melt glaciers: implications for passive imaging and monitoring [PDF]

open access: yesThe 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
doaj   +1 more source

The Search of Diffusive Properties in Ambient Seismic Noise

open access: yesBulletin of the Seismological Society of America, 2021
ABSTRACTAmbient seismic noise (ASN) is becoming of interest for geophysical exploration and engineering seismology, because it is possible to exploit its potential for imaging. Theory asserts that the Green’s function can be retrieved from correlations within a diffuse field.
Piña-Flores, José   +4 more
openaire   +2 more sources

Near-Surface Structure Investigation Using Ambient Noise in the Water Environment Recorded by Fiber-Optic Distributed Acoustic Sensing

open access: yesRemote 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
doaj   +1 more source

Single‐station monitoring of volcanoes using seismic ambient noise [PDF]

open access: yesGeophysical Research Letters, 2016
AbstractSeismic ambient noise cross correlation is increasingly used to monitor volcanic activity. However, this method is usually limited to volcanoes equipped with large and dense networks of broadband stations. The single‐station approach may provide a powerful and reliable alternative to the classical “cross‐station” approach when measuring ...
Raphael S. M. De Plaen   +4 more
openaire   +5 more sources

A novel horizontal to vertical spectral ratio approach in a wired structural health monitoring system [PDF]

open access: yesJournal 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
doaj   +1 more source

Identifying the Fingerprint of a Volcano in the Background Seismic Noise from Machine Learning-Based Approach

open access: yesApplied 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
doaj   +1 more source

Seismic Gradiometry using Ambient Seismic Noise in an Anisotropic Earth [PDF]

open access: yesGeophysical 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
openaire   +2 more sources

Dead Sea Basin Imaged by Ambient Seismic Noise Tomography [PDF]

open access: yesPure and Applied Geophysics, 2011
In the framework of the Dead Sea Integrated Research project (DESIRE), 59 seismological stations were deployed in the region of the Dead Sea Basin. Twenty of these stations recorded data of sufficiently high quality between May and September 2007 to be used for ambient seismic noise analysis.
Stankiewicz, J.   +3 more
openaire   +5 more sources

Impacts of Reservoir Water Level Fluctuation on Measuring Seasonal Seismic Travel Time Changes in the Binchuan Basin, Yunnan, China

open access: yesRemote Sensing, 2021
An airgun source in a water reservoir has been developed in the past decade as a green active source that had been proven effective to derive short-term subsurface structural changes. However, seasonal water level fluctuation in the reservoir affects the
Chunyu Liu   +3 more
doaj   +1 more source

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