Results 51 to 60 of about 2,932,998 (280)

Towards using seismic anisotropy to interpret ductile deformation in mafic lower crust [PDF]

, 2008
The lower crust forms an important geodynamic control in continental tectonics and the communication and coupling of kinematics between surface and deep-Earth processes.
Tatham, Daniel John
core   +5 more sources

Temporal Changes of Seismic Velocity Caused by Volcanic Activity at Mt. Etna Revealed by the Autocorrelation of Ambient Seismic Noise

Frontiers in Earth Science, 2019
On active volcanoes, ambient noise-based seismic interferometry can be a very useful monitoring tool as it allows to detect very slight variations in seismic velocity associated with magma transported toward the surface.
Raphael S. M. De Plaen, Raphael S. M. De Plaen, Andrea Cannata, Flavio Cannavo', Corentin Caudron, Thomas Lecocq, Olivier Francis   +6 more
doaj   +1 more source

Slip versus dilation tendency parameter space as a tool for prospecting structurally controlled geothermal systems in greenfield: insights from the greater Ruhr region

Deep Underground Science and Engineering, EarlyView.
This study highlights that with the static and time‐dependent evolution of slip versus dilation tendency parameter space, structurally controlled deep geothermal systems can be selected within areas of higher permeability and lower seismic hazard. Abstract Faults play a vital role in the Earth's hydraulic system by facilitating fluid flow when dilating
Michal Kruszewski, Alessandro Verdecchia, Oliver Heidbach, Rebecca M. Harrington, David Healy   +4 more
wiley   +1 more source

Optimal processing for seismic noise correlations

Geophysical Journal International, 2020
SUMMARYA wide spectrum of processing schemes is commonly applied during the calculation of seismic noise correlations. This is intended to suppress large-amplitude transient and monochromatic signals, to accelerate convergence of the correlation process or to modify raw correlations into more plausible approximations of interstation Green’s functions ...
Andreas Fichtner, Daniel Bowden, Laura Ermert   +2 more
openaire   +5 more sources

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

Monitoring variation of crustal media in Wulong area of Chongqing Municipality by using repeating earthquakes

地震科学进展, 2021
The waveform and observation report data of 107 earthquakes with ML≥1.5 recorded by Chongqing Digital Seismic Network in Wulong area were selected. The waveform cross-correlation technology was used for correlation calculation.
Jian Wang, Yayun Yang, Wei Ma
doaj   +1 more source

Exploring wave propagation behaviors in rock: A grain‐based perspective on mineral structures

Deep Underground Science and Engineering, EarlyView.
This study investigates wave propagation in rock at the grain scale using a grain‐based model, revealing that mineral elastic modulus significantly influences wave attenuation while grain size and distribution have limited effects. A novel peak particle velocity attenuation prediction model is proposed and validated for grain‐scale wave propagation ...
Zhiyi Liao, Jiachen Xu, Kai Zhang, Changtai Zhou   +3 more
wiley   +1 more source

Seismic Reliability Analysis of Reinforced Concrete Arch Bridges Considering Component Correlation

Buildings
To more effectively account for the correlation between components in the seismic reliability analysis of reinforced concrete arch bridges, this study proposes a system seismic reliability analysis method based on the D-vine Copula function. First, based
Jianjun Liu, Jijin Zhang, Hanzhao Zhang, Hongping Ye, Xuemin Wang   +4 more
doaj   +1 more source

A matched-filter technique with an objective threshold

Scientific Reports, 2022
We propose an objective threshold determination method for detecting outliers from the empirical distribution of cross-correlation coefficients among seismic waveforms.
Shiro Hirano, Hironori Kawakata, Issei Doi   +2 more
doaj   +1 more source

Background seismicity and seismic correlations

Journal of AppliedMath
The law of energy accumulation in the earthquake focus is presented, together with the temporal, energy and magnitude distributions of regular, background earthquakes. The background seismicity is characterized by two parameters—the seismicity rate and the Gutenberg-Richter parameter, which can be extracted by fitting the empirical earthquake ...
openaire   +1 more source