Results 31 to 40 of about 1,799 (182)

Distributed and Communication-Efficient Spatial Auto-Correlation Subsurface Imaging in Sensor Networks

Sensors, 2019
A wireless seismic network can be effectively used as a tool for subsurface monitoring and imaging. By recording and analyzing ambient noise, a seismic network can image underground infrastructures and provide velocity variation information of the ...
Maria Valero, Fangyu Li, Jose Clemente, Wenzhan Song   +3 more
doaj   +1 more source

Review of progress in passive seismic reflection exploration

地球与行星物理论评, 2023
Seismic exploration is a key method for the study of underground structures. Active seismic surveys can acquire high signal-to-noise ratio reflection data; however, the operation of active seismic surveys is complicated, and the exploration cost is high.
Xiaomin Ruan, Mingchun Chen, Zhendong Liu, Zhihui Wang, Zhiwu Xu, Miao Chen, Xingang Zhang   +6 more
doaj   +1 more source

Spatial and temporal influence of sea level on inland stress based on seismic velocity monitoring

Earth, Planets and Space, 2022
Earth’s crust responds to perturbations from various environmental factors. To evaluate this response, seismic velocity changes offer an indirect diagnostic, especially where velocity can be monitored on an ongoing basis from ambient seismic noise ...
Rezkia Dewi Andajani, Takeshi Tsuji, Roel Snieder, Tatsunori Ikeda   +3 more
doaj   +1 more source

Towards the Monitoring of Underground Caves Using Geomatics and Geophysical Techniques: 3D Analyses and Seismic Response

ISPRS International Journal of Geo-Information, 2023
Analyses of climate change, due to its impact not only on the weather and the environment but also on human health and life, are one of the most important study activities made in recent years.
Paolo Dabove, Chiara Colombero, Andrea Salerno Quaroni   +2 more
doaj   +1 more source

Seismic attenuation from recordings of ambient noise [PDF]

Geophysics, 2012
ABSTRACT We applied seismic interferometry to data from an ocean-bottom survey offshore Norway and found that ambient seismic noise can be used to constrain subsurface attenuation on a reservoir scale. By crosscorrelating only a few days of recordings by broadband ocean bottom seismometers, we were able to retrieve empirical Green’s ...
Weemstra, Cornelis, Boschi, Lapo, Goertz, Alexander, Artman, Brad   +3 more
openaire   +3 more sources

Societal Impact of COVID-19 Crisis on the Ambient Seismic Noise in Metropolitan France

Seismica
The COVID-19 pandemic led to restrictions on human mobility worldwide. In France, numerous phases of lockdowns and curfews were instituted in an attempt to limit the consequences of this pandemic.
Flavien Mattern, Loretta Bardavid, Arnaud Delsuc, Vivien Belin, Jérôme Vergne, Dimitri Zigone, Jean Schmittbuhl   +6 more
doaj   +1 more source

WMSAN Python Package: From Oceanic Forcing to Synthetic Cross-correlations of Microseismic Noise

Seismica
Seismic ambient noise spectra ubiquitously show two amplitude peaks corresponding to distinct oceanic wave interaction mechanisms called primary (seismic period (T) ~ 14 s) and secondary (T ~ 7 s) microseism.
Lisa Tomasetto, Pierre Boué, Fabrice Ardhuin, Éléonore Stutzmann, Zongbo Xu, Raphaël De Plaen, Laurent Stehly   +6 more
doaj   +1 more source

Metasurface‐Enabled Active‐Like Passive Radar

Advanced Science, EarlyView.
A programmable space‐time‐coding metasurface embeds distinct spatiotemporal tags into ambient wireless signals, allowing passive radar to operate in an active‐like manner. By enabling code‐correlated reconstruction under interference, the approach supports robust real‐time UAV tracking in complex environments and points to intelligent, low‐power ...
Mingyi Li, Jiawen Xu, Hanting Zhao, Xu Zhao, Yanjin Chen, Tie Jun Cui, Vincenzo Galdi, Lianlin Li   +7 more
wiley   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

An application of a seismic nodal system with seismic ambient noise near Kunlun Station, Antarctica: estimating ice thickness and firn structure

Earth and Planetary Physics
The thickness and upper densification structure of an ice sheet are important parameters for dynamic ice sheet modeling and glacier mass balance studies.
YuQiao Chen, Peng Yan, YuanDe Yang, XueKe Huang, Fei Li   +4 more
doaj   +1 more source