Results 91 to 100 of about 74,393 (284)

Reverse Detection of Short-Term Earthquake Precursors [PDF]

, 2003
We introduce a new approach to short-term earthquake prediction based on the concept of selforganization of seismically active fault networks. That approach is named "Reverse Detection of Precursors" (RDP), since it considers precursors in reverse order ...
A. Gabrielov, Bird, Blanter, Bowman, Buffe, Caputo, D. Turcotte, Gabrielov, Gabrielov, Jaume, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, Keilis-Borok, King, Knopoff, Kossobokov, Newman, Novikova, P. Shebalin, Press, Romanowicz, Rotwain, Rundquist, Shebalin, V. Keilis-Borok, Zaliapin, Zaliapin, Zaliapin, Zöller   +33 more
core   +1 more source

Numerical and experimental study on P‐wave propagation across a rock joint with different orientations

Deep Underground Science and Engineering, EarlyView.
Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei, Mojtaba D. fallahi, Ali Uromeihy, Mohammad R. Nikoodel, Mohammad Fathollahy   +4 more
wiley   +1 more source

Gaborlet‐guided sparse filtering: A novel intelligent method for lithology identification by vibration signals while drilling

Deep Underground Science and Engineering, EarlyView.
The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao, Danqi Zhang, Zhenqi Song, Jinrui Wang, Qi Wang, Heqing Liu   +5 more
wiley   +1 more source

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

Deep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang, Jinxiao Liu, Gaoshuo Zhang, Wenxin Li, Changdi He   +4 more
wiley   +1 more source

Strengthening urban resilience in China through underground infrastructures management: Addressing global climate challenges with technological solutions

Deep Underground Science and Engineering, EarlyView.
This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh, Tonni Agustiono Kurniawan, Christia Meidiana, Abdelkader Anouzla, Faissal Aziz, Imran Ali, Joan Cecilia C. Casila, M. Imran Khan, Dongdong Zhang, Meihui Jiang, Mohd Hafiz Dzarfan Othman, Md Munir Hayet Khan, Kasun Kumara Dissanayake   +12 more
wiley   +1 more source

The seismicity of the Carpathians in 2022

Геофизический журнал
According to the results of observations at the seismic stations of the Carpathian region of Ukraine in 2022, the main parameters of 50 earthquakes in the range of energy classes KR=5.7÷13.7 were obtained.
S.T. Verbytskyi, R.S. Pronyshyn, V.I. Prokopyshyn, A.T. Stetskiv, I.M. Nischimenko, I.M. Keleman, G.A. Gerasymenyuk   +6 more
doaj   +1 more source

Importance of small earthquakes for stress transfers and earthquake triggering

, 2004
We estimate the relative importance of small and large earthquakes for static stress changes and for earthquake triggering, assuming that earthquakes are triggered by static stress changes and that earthquakes are located on a fractal network of ...
Abercrombie, Agnew, Agnès Helmstetter, Console, Das, Davis, Dieterich, Drakatos, Ekström, Felzer, Felzer, Felzer, Felzer, Guo, Hanks, Harris, Harris, Hauksson, Helmstetter, Helmstetter, Helmstetter, Helmstetter, Hergarten, Huc, Hutton, Izenman, Jones, Jones, Kagan, Kagan, Kagan, Kagan, Kagan, Kagan, Kagan, Kagan, Kagan, Kagan, Kagan, Kilb, King, Marsan, Marsan, Michael, Mikumo, Molchan, Nur, Ogata, Ogata, Papazachos, Parsons, Reasenberg, Reasenberg, Reasenberg, Scholz, Shaw, Shearer, Singh, Solov'ev, Steacy, Stein, Utsu, Utsu, Working Group On California Earthquake Probabilities, Yamanaka, Zeng, Zhuang   +66 more
core   +4 more sources

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

Deep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +1 more source

Creep behaviour of sandstone under different water conditions and its response to varying impact energy

Geomatics, Natural Hazards & Risk
Creep deformation and failure of immersed sandstone under mining disturbances are critical factors driving water inrush and goaf collapse. This study employed a specialized creep-impact testing system capable of simultaneous water immersion and ...
Honglei Liu, Jianhua Zhou, Jinduo Li, Wenxue Deng, Leilei Niu, Tianhong Yang, Shixian Zhang   +6 more
doaj   +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