Results 11 to 20 of about 20,847 (192)

Strain rate and temperature dependence of Omori law scaling constants of AE data: Implications for earthquake foreshock-aftershock sequences [PDF]

, 2004
Little is known about the temperature and strain rate dependence of acoustic emission AE activity (AE). Hence, we carried out a preliminary series of flow-through triaxial compression tests on porous sandstones at different temperatures and strain rates.
Aki, Costin, Frohlich, Helmstetter, Hirata, Hirata, Ira O. Ojala, Liakopoulou-Morris, Lockner, Lockner, Lockner, Main, Main, Meredith, Mogi, Mogi, Ojala, Ojala, Sano, Scholz, Utsu, Vinciguerra, Von Seggern, Yabe, Yanagidani   +24 more
core   +1 more source

Is Earthquake Triggering Driven by Small Earthquakes? [PDF]

, 2002
Using a catalog of seismicity for Southern California, we measure how the number of triggered earthquakes increases with the earthquake magnitude. The trade-off between this relation and the distribution of earthquake magnitudes controls the relative ...
Helmstetter, Agnes
core   +4 more sources

Sub-critical and Super-critical Regimes in Epidemic Models of Earthquake Aftershocks [PDF]

, 2002
We present an analytical solution and numerical tests of the epidemic-type aftershock (ETAS) model for aftershocks, which describes foreshocks, aftershocks and mainshocks on the same footing.
Abercrombie, Abramowitz, Agnès Helmstetter, Bender, Blanter, Bowman, Bowman, Console, Correig, Daley, Davis, Didier Sornette, Drakatos, Dreger, Evison, Evison, Feller, Felzer, Gardner, Glöckle, Gross, Guo, Guo, Harris, Harris, Hawkes, Hawkes, Hawkes, Hawkes, Helmstetter, Hough, Huang, Johansen, Jones, Kagan, Kagan, Kagan, Kagan, Kagan, Keilis-Borok, Keilis-Borok, Kisslinger, Kisslinger, Knopoff, Laherrère, Lee, Liu, Main, Matsu'ura, Meltzner, Meredith, Molchan, Molchan, Morse, Moyal, Ogata, Ogata, Ogata, Ogata, Ogata, Ogata, Olver, Pujol, Ranalli, Reasenberg, Reasenberg, Reasenberg, Sammis, Scholz, Simeonova, Smith, Sornette, Sornette, Sornette, Steeples, Sykes, Tajima, Utsu, Vere-Jones, Vere-Jones, Viljoen, Wiemer, Wyss, Yamashita, Zhang   +84 more
core   +3 more sources

2014年新疆于田MS7.3地震的发震构造及余震特征

Dizhen xuebao, 2021
利用2014年10月至2019年9月期间欧空局Sentinel-1卫星采集的合成孔径雷达数据分析了2014年2月12日新疆于田MS7.3地震的震后形变场。结果表明，此次地震造成了南硝尔库勒断裂上明显的震后形变，首次从地震形变场的角度验证了此次地震的发震构造为NE向的左旋走滑断裂，而非部分研究所认为的近NS向断裂。由合成孔径雷达干涉测量得到的多年平均速率图显示主震的西侧仅出现了少量震后余滑且仍为强闭锁区，这意味着2008年和2014年于田两次MS7.3地震之间的区域仍存在发生强震的风险 ...
Yi Luo, Yingshun Hu, Yunfeng Tian, Jingfa Zhang   +3 more
doaj   +1 more source

Generation of infrasonic signals during earthquakes under Lake Hovsgool (Northern Mongolia) on December 5, 2014

Solar-Terrestrial Physics, 2018
The paper discusses the results of the detection of seismic and infrasonic waves generated by a major earthquake and its aftershock (the moment magnitude MW=4.9 and MW=4.2 respectively), which occurred in northern Mongolia under Lake Hovsgool on December
Sorokin A.G., Klyuchevskii А.V., Demyanovich V.M.   +2 more
doaj   +1 more source

The Uglovoye Podnyatiye Earthquake on December 20, 2018 (Mw = 7.3) in the Junction Zone between Kamchatka and Aleutian Oceanic Trenches

Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2020
The paper presents the first results of integrated research of the strong seismic event (Uglovoye Podnyatiye earthquake (UPE) with a magnitude of Mw=7.3) that occurred on December 20, 2018 in the junction zone between the Kuril-Kamchatka and Aleutian ...
Чебров Д.В., Кугаенко Ю.А., Ландер А.В., Абубакиров И.Р., Дрознина С.Я., Митюшкина С.В., Павлов В.М., Салтыков В.А., Серафимова Ю.К., Титков Н.Н.   +9 more
doaj   +1 more source

SOME CHARACTERISTICS OF THE EARTHQUAKE CATALOG AND THE SEISMIC PROCESS ACCORDING TO THE KNET NETWORK

Геодинамика и тектонофизика, 2022
Some characteristics of the earthquake catalog and seismic process are considered. The catalog is obtained according to the KNET network (KN-code in FSDN, International Federation of Digital Seismograph Networks, that is operated by Research Station of ...
N. A. Sycheva
doaj   +1 more source

Forecasting strong aftershocks in earthquake clusters from northeastern Italy and western Slovenia

, 2020
In this study, we propose an analysis of the earthquake clusters that occurred in North-Eastern Italy and western Slovenia from 1977 to today. Given a mainshock generating alarm in the population, we are interested in forecasting if a similar magnitude ...
Di Giovambattista, R., Gentili, S.
core   +1 more source

Artifactual log-periodicity in finite size data: Relevance for earthquake aftershocks [PDF]

, 2000
The recently proposed discrete scale invariance and its associated log-periodicity are an elaboration of the concept of scale invariance in which the system is scale invariant only under powers of specific values of the magnification factor. We report on
A. Johansen, Anifrani, Bowman, Brehm, D. Sornette, Geller, Gross, H. Saleur, Huang, Johansen, Johansen, Johansen, Johansen, Kisslinger, Lee, M. W. Lee, Newman, Onsager, Ouillon, Ouillon, Ouillon, Press, Reasenberg, Reasenberg, Sahimi, Saleur, Saleur, Saleur, Slutzky, Sornette, Sornette, Sornette, Sornette, Tsunogai, Tsunogai, Turcotte, Utsu, Y. Huang, Zajdenweber   +38 more
core   +2 more sources

Fault plane solutions of the 1993 and 1995 Gulf of Aqaba earthquakes and their tectonic implications

Annals of Geophysics, 1997
The stereographic projection of P-wave first motions for the 3 August 1993 Gulf of Aqaba earthquake, its largest aftershock (16 h 33 min), and for the 22 November 1995 earthquake were constructed using the polarity readings of regional and teleseismic ...
E. M. Ibrahim, H. M. Hussein, A. K. Abdel-Fattah, A. S. Abu El Atta   +3 more
doaj   +1 more source