Results 41 to 50 of about 314,541 (295)

The Sonora Earthquake [PDF]

Science, 1887
n ...
openaire   +4 more sources

Active Metamaterials with Tunable Shear Nonreciprocity and Nonlinear Dynamics

Advanced Science, EarlyView.
Active gear‐based mechanical metamaterials enable simultaneous control of translational and torsional stiffnesses by 30–100×, break shear reciprocity under positive versus negative loads, broadly tune resonant frequencies, and offer programmable dynamic responses.
Xin Fang, Miao Yu, Dianlong Yu, Li Cheng
wiley   +1 more source

Seafloor observations indicate spatial separation of coseismic and postseismic slips in the 2011 Tohoku earthquake

Nature Communications, 2016
Postseismic slip of the 2011 Tohoku earthquake in Japan has occurred on the plate interface, but quantifying the slip has been difficult due to a lack of seafloor data.
Takeshi Iinuma, Ryota Hino, Naoki Uchida, Wataru Nakamura, Motoyuki Kido, Yukihito Osada, Satoshi Miura   +6 more
doaj   +1 more source

A semi-automated algorithm to quantify scarp morphology (SPARTA): application to normal faults in southern Malawi [PDF]

Solid Earth, 2019
Along-strike variation in scarp morphology reflects differences in a fault's geomorphic and structural development and can thus indicate fault rupture history and mechanical segmentation. Parameters that define scarp morphology (height, width, slope) are
M. Hodge, M. Hodge, J. Biggs, J. Biggs, Å. Fagereng, Å. Fagereng, A. Elliott, A. Elliott, H. Mdala, F. Mphepo   +9 more
doaj   +1 more source

A way to synchronize models with seismic faults for earthquake forecasting: Insights from a simple stochastic model

, 2006
Numerical models are starting to be used for determining the future behaviour of seismic faults and fault networks. Their final goal would be to forecast future large earthquakes.
Aki, Amalio F. Pacheco, Baba, Bak, Ben-Zion, Boness, Bowman, Castellaro, Dahmen, Das, Das, Dowrick, Drossel, Fitzenz, Goltz, González, González, Grant, Gutenberg, Gutenberg, Gómez, Hainzl, Hainzl, Hainzl, Harris, Hashimoto, Heimpel, Helmstetter, Henley, Hickman, Houghton, Ikeda, Ishimoto, Javier B. Gómez, Kanamori, Kanamori, Kato, Keilis-Borok, Kisslinger, Kossobokov, Kuroki, Lei, López-Ruiz, Main, Mason, Michael, Miguel Vázquez-Prada, Miller, Molchan, Moreno, Newman, Okada, Olami, Palmer, Pepke, Preston, Reasenberg, Robinson, Robinson, Rubin, Rundle, Rundle, Rundle, Rundle, Rundle, Scholz, Scholz, Schorlemmer, Schwartz, Seeber, Sieh, Soloviev, Steacy, Stirling, Stirling, Tanioka, Tiampo, Tsukahara, Turcotte, Vázquez-Prada, Vázquez-Prada, Ward, Wells, Wesnousky, Wesnousky, Wyss, Yabuki, Yagi, Yamamoto, Yeats, Youngs, Zoback, Zöller, Álvaro González   +93 more
core   +1 more source

Observations of stress relaxation before earthquakes [PDF]

, 2004
Theory and observations suggest that seismic shear wave splitting, caused by fluid-saturated stress-aligned microcracks, directly monitors low-level deformation before fracturing, faulting and earthquakes occur.
Angerer, Booth, Crampin, Crampin, Crampin, Crampin, Crampin, Crampin, Crampin, Crampin, Gao, Gao, Haar, Imoto, Lockner, Main, Peacock, Rikitake, Stuart Crampin, Volti, Volti, Yuan Gao   +21 more
core   +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

Improvement in Marine CSEM Imaging for Towed Electromagnetic Receivers Through Multirate Signal Processing and Adaptive Noise Suppression

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Multirate signal processing and adaptive filtering techniques have been widely employed to mitigate noise contamination and enhance the efficiency of data analysis.
Yu Long, Xiaochen Li, Dong Liang, Minghui Chen, Kai Chen   +4 more
doaj   +1 more source

Earthquake slip surfaces identified by biomarker thermal maturity within the 2011 Tohoku-Oki earthquake fault zone. [PDF]

, 2020
Extreme slip at shallow depths on subduction zone faults is a primary contributor to tsunami generation by earthquakes. Improving earthquake and tsunami risk assessment requires understanding the material and structural conditions that favor earthquake ...
Kirkpatrick, James D, Polissar, Pratigya J, Rabinowitz, Hannah S, Rowe, Christie D, Savage, Heather M   +4 more
core  

Gate‐Align‐SED: Semi‐Supervised Sound Event Detection via Adaptive Feature Gating and Cross‐Task Alignment in Situation Awareness

Advanced Intelligent Systems, EarlyView.
Overview of the proposed Gate‐Align‐SED, including two stages of training: (1) Mean‐Teacher SSL Training; and (2) Enhancer Model Training. In complex real‐world environments such as disaster monitoring, effective sound event detection (SED) is often hindered by the presence of noise and limited labeled data.
Jieli Chen, Li‐Minn Ang, Chee Shen Lim, Kah Phooi Seng, Jeremy Smith   +4 more
wiley   +1 more source