Spatiotemporal changes of seismic attenuation caused by injected CO2 at the Frio‐II pilot site, Dayton, TX, USA
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2017jb014164
Abstract: A continuous active source seismic monitoring (CASSM) dataset was collected with crosswell geometry during CO2 injection at the Frio-II brine pilot, near Liberty, TX. Previous studies have shown that spatio-temporal changes in the P-wave first… read more here.
Keywords: injected co2; seismic attenuation; frio; saturation ... See more keywords
Sensitivity of seismic attenuation and phase velocity to intrinsic background anisotropy in fractured porous rocks: A numerical study†
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2017jb014558
Abstract: Many researchers have analyzed seismic attenuation and velocity dispersion due to wave-induced fluid flow (WIFF) related to the presence of fluid-saturated fractures embedded in an isotropic porous background. Most fractured formations do, however, exhibit some… read more here.
Keywords: seismic attenuation; background; background anisotropy; intrinsic background ... See more keywords
Seismic attenuation structure of southern Peruvian subduction system
Sign Up to like & getrecommendations! Published in 2019 at "Tectonophysics"
DOI: 10.1016/j.tecto.2019.228203
Abstract: Abstract Seismic attenuation provides key constraints on understanding the structure and dynamics of subduction-zone system. In this study, we provide the first three-dimensional P and S-wave attenuation models beneath the Nazca-South America subduction zone by… read more here.
Keywords: system; seismic attenuation; subduction; nazca ridge ... See more keywords
Seismic Attenuation Monitoring of a Critically Stressed San Andreas Fault
Sign Up to like & getrecommendations! Published in 2020 at "Geophysical Research Letters"
DOI: 10.1029/2020gl089201
Abstract: We show that seismic attenuation ( QS−1 ) along the San Andreas fault (SAF) at Parkfield correlates with the occurrence of moderate‐to‐large earthquakes at local and regional distances. Earthquake‐related QS−1 anomalies are likely caused by… read more here.
Keywords: earthquake; seismic attenuation; san andreas; attenuation ... See more keywords
A viscoelastic model for seismic attenuation using fractal mechanical networks
Sign Up to like & getrecommendations! Published in 2020 at "Geophysical Journal International"
DOI: 10.1093/gji/ggaa549
Abstract: Seismic attenuation (quantified by the quality factor Q) has a significant impact on the seismic waveforms, especially in the fluid-saturated rocks. This dissipative process can be phenomenologically represented by viscoelastic models. Previous seismological studies show… read more here.
Keywords: seismic attenuation; fmn models; model; saturated rocks ... See more keywords
Fitting viscoelastic mechanical models to seismic attenuation and velocity dispersion observations and applications to full waveform modelling
Sign Up to like & getrecommendations! Published in 2019 at "Geophysical Journal International"
DOI: 10.1093/gji/ggz395
Abstract: The Cole–Cole mechanical model can match a simple seismic attenuation curve over a broad frequency range, but it is not a suitable model for replicating complicated seismic attenuation dispersion curves which exhibit multiple peaks or… read more here.
Keywords: frequency; seismic attenuation; model; dispersion ... See more keywords
3-D seismic attenuation structure of Long Valley caldera: looking for melt bodies in the shallow crust
Sign Up to like & getrecommendations! Published in 2019 at "Geophysical Journal International"
DOI: 10.1093/gji/ggz543
Abstract: Janire Prudencio1,2 and Michael Manga3,4 1Department of Theoretical physics and Cosmos, Physics of the Earth area, University of Granada, Profesor Clavera 12, 18071 Granada, Spain. E-mail: [email protected] 2Instituto Andaluz de Geofisica, University of Granada, Campus… read more here.
Keywords: attenuation structure; granada; seismic attenuation; structure long ... See more keywords
Seismic Attenuation Estimation Using an Enhanced Log Spectral Ratio Method
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2022.3140343
Abstract: Seismic attenuation estimation is a significant task for characterizing reservoirs and improving the resolution of seismic data. The logarithmic spectral ratio (LSR) is one of the widely used tools for seismic attenuation estimation. However, how… read more here.
Keywords: spectral ratio; attenuation; seismic attenuation; attenuation estimation ... See more keywords
Structure-Guided L1-2 Minimization for Stable Multichannel Seismic Attenuation Compensation
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2022.3217293
Abstract: Absorption in subsurface media severely degrades seismic data quality. Seismic attenuation compensation as an important processing method can effectively improve the resolution and fidelity of seismic data. Based on sparse reflectivity model and attenuated convolution… read more here.
Keywords: structure; compensation; seismic attenuation; inversion based ... See more keywords
Bulk moduli and seismic attenuation in partially saturated rocks: hysteresis of liquid bridges effect
Sign Up to like & getrecommendations! Published in 2019 at "Geophysical Prospecting"
DOI: 10.1111/1365-2478.12782
Abstract: ABSTRACT A key task of exploration geophysics is to find relationships between seismic attributes (velocities and attenuation) and fluid properties (saturation and pore pressure). Experimental data suggest that at least three different factors affect these… read more here.
Keywords: bridges effect; liquid bridges; hysteresis liquid; seismic attenuation ... See more keywords
Visualization of attenuation structure and faults in incoming oceanic crust of the Nankai Trough using seismic attenuation profiling
Sign Up to like & getrecommendations! Published in 2018 at "Earth, Planets and Space"
DOI: 10.1186/s40623-018-0803-y
Abstract: Seismic attenuation properties were tested as indicators of lateral variation in geological structures and detection of faults within poorly reflective oceanic crust, on a seismic survey line along the Nankai Trough. We can specify both… read more here.
Keywords: nankai trough; seismic attenuation; oceanic crust; attenuation profiling ... See more keywords