Seismic velocity and anisotropy tomography of southern Sumatra
Sign Up to like & getrecommendations! Published in 2021 at "Physics of the Earth and Planetary Interiors"
DOI: 10.1016/j.pepi.2021.106722
Abstract: Abstract In this study new isotropic P- and S-wave velocity models as well as the P-wave azimuthally anisotropic model of the crust and uppermost mantle beneath southern Sumatra are derived from regional earthquake data by… read more here.
Keywords: velocity; tomography; seismic velocity; mantle wedge ... See more keywords
Seismic Velocity Changes Caused by Water Table Fluctuation in the New Madrid Seismic Zone and Mississippi Embayment
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Geophysical Research"
DOI: 10.1029/2020jb019524
Abstract: We use cross correlation of the ambient seismic field to estimate seasonal variations of seismic velocity in the Mississippi Embayment and to determine the underlying physical mechanisms. Our main observation is that the δt/t variations… read more here.
Keywords: seismic velocity; water; fluctuation; water table ... See more keywords
Hydrological Effects on Seismic‐Noise Monitoring in Karstic Media
Sign Up to like & getrecommendations! Published in 2021 at "Geophysical Research Letters"
DOI: 10.1029/2021gl093191
Abstract: Fluctuations in groundwater content may produce surface deformation and affect the elastic properties of the Earth’s crust. In this study, we evaluate the temporal variations of the Earth’s crust elastic properties (in the form of… read more here.
Keywords: effects seismic; seismic noise; hydrological effects; seismic velocity ... See more keywords
Monitoring Seismic Velocity Changes Across the San Jacinto Fault Using Train‐Generated Seismic Tremors
Sign Up to like & getrecommendations! Published in 2022 at "Geophysical Research Letters"
DOI: 10.1029/2022gl098509
Abstract: Microseismic noise has been used for seismic velocity monitoring. However, such signals are dominated by low‐frequency surface waves that are not ideal for detecting changes associated with small tectonic processes. Here we show that it… read more here.
Keywords: velocity; seismic velocity; fault; jacinto fault ... See more keywords
Interaction of Air Pressure and Groundwater as Main Cause of Sub‐Daily Relative Seismic Velocity Changes
Sign Up to like & getrecommendations! Published in 2023 at "Geophysical Research Letters"
DOI: 10.1029/2022gl101298
Abstract: Our study investigates variations of seismic velocity that occur over short time scales of hours. We use coda wave interferometry to inspect 5 months of continuous data from a seismological array in southern Germany. This… read more here.
Keywords: interaction air; relative seismic; velocity; seismic velocity ... See more keywords
Seismic velocity reduction and accelerated recovery due to earthquakes on the Longmenshan fault
Sign Up to like & getrecommendations! Published in 2019 at "Nature Geoscience"
DOI: 10.1038/s41561-019-0347-1
Abstract: Various studies report on temporal changes of seismic velocities in the crust and attempt to relate the observations to changes of stress and material properties around faults. Although there are growing numbers of observations on… read more here.
Keywords: seismic velocity; fault; recovery; reduction ... See more keywords
Estimating temporal changes in seismic velocity using a Markov chain Monte Carlo approach
Sign Up to like & getrecommendations! Published in 2019 at "Geophysical Journal International"
DOI: 10.1093/gji/ggz535
Abstract: S U M M A R Y We present a new method for estimating time-series of relative seismic velocity changes (dv/v) within the Earth. Our approach is a Markov chain Monte Carlo (MCMC) technique that… read more here.
Keywords: seismic velocity; markov chain; velocity; time series ... See more keywords
Multitask Learning for Super-Resolution of Seismic Velocity Model
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2020.3034502
Abstract: Full waveform inversion (FWI) is a powerful tool for estimating the underground velocity model. However, it is computationally expensive and the resulting models tend to be not accurate enough. Thus, to improve the efficiency and… read more here.
Keywords: seismic velocity; velocity; super resolution; velocity model ... See more keywords
Crustal seismic velocity responds to a magmatic intrusion and seasonal loading in Iceland’s Northern Volcanic Zone
Sign Up to like & getrecommendations! Published in 2019 at "Science Advances"
DOI: 10.1126/sciadv.aax6642
Abstract: Seismic velocity of the shallow crust changes after an intrusion of magma and seasonally due to environmental effects in Iceland. Seismic noise interferometry is an exciting technique for studying volcanoes, providing a continuous measurement of… read more here.
Keywords: seismic velocity; iceland; velocity; intrusion ... See more keywords
Seismic velocity model of the crust in the northern Canadian Cordillera from Rayleigh wave dispersion data
Sign Up to like & getrecommendations! Published in 2017 at "Canadian Journal of Earth Sciences"
DOI: 10.1139/cjes-2016-0115
Abstract: Models of the seismic velocity structure of the crust in the seismically active northern Canadian Cordillera remain poorly constrained, despite their importance in the accurate location and characterization of regional earthquakes. On 29 August 2014,… read more here.
Keywords: seismic velocity; rayleigh wave; crust; cordillera ... See more keywords
Imaging high-resolution seismic velocity from walkaway vertical seismic profile data in a carbonate reservoir using acoustic waveform tomographyVSP acoustic waveform tomography
Sign Up to like & getrecommendations! Published in 2018 at "Geophysics"
DOI: 10.1190/geo2017-0180.1
Abstract: ABSTRACTHigh-resolution seismic velocity was obtained using acoustic full-waveform tomography of walkaway vertical seismic profile (VSP) data from an oil field dominated by carbonate rocks, offshore Abu Dhabi in the United Arab Emirates. The data were… read more here.
Keywords: seismic velocity; resolution seismic; velocity; waveform ... See more keywords