Results 21 to 30 of about 5,765 (201)

A global view of Pc3 wave activity in near-Earth space: Results from hybrid-Vlasov simulations

Frontiers in Astronomy and Space Sciences, 2022
Ultra-low frequency (ULF) waves in the Pc3 range, with periods between 10–45 s, are routinely observed in Earth’s dayside magnetosphere. They are thought to originate in the foreshock, which extends upstream of the quasi-parallel bow shock and is ...
Lucile Turc, Hongyang Zhou, Vertti Tarvus, Matti Ala-Lahti, Matti Ala-Lahti, Markus Battarbee, Yann Pfau-Kempf, Andreas Johlander, Urs Ganse, Maxime Dubart, Harriet George, Maxime Grandin, Konstantinos Horaites, Fasil Tesema, Jonas Suni, Markku Alho, Konstantinos Papadakis, Minna Palmroth, Minna Palmroth   +18 more
doaj   +1 more source

Cluster-based foreshock discrimination model with flexible time horizon and mainshock magnitudes

Progress in Earth and Planetary Science, 2023
Foreshock detection before mainshock occurrence is an important challenge limiting the short-term forecasts of large earthquakes. Various models for predicting mainshocks based on discrimination of foreshocks activity have been proposed, but many of them
Shunichi Nomura, Yosihiko Ogata
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

Statistical study of foreshock cavitons [PDF]

Annales Geophysicae, 2013
In this work we perform a statistical analysis of 92 foreshock cavitons observed with the Cluster spacecraft 1 during the period 2001–2006. We analyze time intervals during which the spacecraft was located in the Earth's foreshock with durations ...
P. Kajdič, X. Blanco-Cano, N. Omidi, K. Meziane, C. T. Russell, J.-A. Sauvaud, I. Dandouras, B. Lavraud   +7 more
doaj   +1 more source

Upper crust anisotropy of the 2020 Jiashi MS 6.4 earthquake

Frontiers in Earth Science, 2023
The 2020 Jiashi MS 6.4 earthquake occurred north of the 1997–1998 Jiashi earthquake swarm. Because of its complex tectonic environment and frequent strong earthquake occurrence, scholars have paid extensive attention to this area.
Jin Li, Jin Li, Jin Li, Yuan Gao, Shaohui Zhou   +4 more
doaj   +1 more source

Local bow shock environment during magnetosheath jet formation: results from a hybrid-Vlasov simulation [PDF]

Annales Geophysicae, 2023
Magnetosheath jets are plasma structures that are characterised by enhanced dynamic pressure and/or plasma velocity. In this study, we investigate the formation of magnetosheath jets in four two-dimensional simulation runs of the global magnetospheric ...
J. Suni, M. Palmroth, M. Palmroth, L. Turc, M. Battarbee, G. Cozzani, M. Dubart, U. Ganse, H. George, E. Gordeev, K. Papadakis, Y. Pfau-Kempf, V. Tarvus, F. Tesema, H. Zhou   +14 more
doaj   +1 more source

Shocklets, SLAMS, and field-aligned ion beams in the terrestrial foreshock [PDF]

, 2012
We present Wind spacecraft observations of ion distributions showing field-aligned beams (FABs) and large-amplitude magnetic fluctuations composed of a series of shocklets and short large-amplitude magnetic structures (SLAMS).
Akimoto, Bale, Behlke, Blanco-Cano, Bonifazi, Bonifazi, Bougeret, Briand, Dubouloz, Eastwood, Fuselier, Fuselier, Gary, Giacalone, Gosling, Gosling, Greenstadt, Gurgiolo, Hellinger, Hoppe, Hoppe, Kawano, Khrabrov, Kis, Koval, Lepping, Lin, Lucek, Lucek, Lucek, Mann, Meziane, Meziane, Meziane, Meziane, Ogilvie, Onsager, Paschmann, Paschmann, Scholer, Scholer, Schwartz, Schwartz, Slavin, Sundkvist, Thomsen, Tsubouchi, Wilkinson, Wilson, Wilson, Wilson, Winske   +51 more
core   +3 more sources

Properties of Foreshocks and Aftershocks of the Non-Conservative SOC Olami-Feder-Christensen Model: Triggered or Critical Earthquakes? [PDF]

, 2003
Following Hergarten and Neugebauer [2002] who discovered aftershock and foreshock sequences in the Olami-Feder-Christensen (OFC) discrete block-spring earthquake model, we investigate to what degree the simple toppling mechanism of this model is ...
A. Helmstetter, A. Helmstetter, A. Helmstetter, A. Helmstetter, B. C. Papazachos, B. Gutenberg, C. G. Bufe, D. D. Bowman, D. Marsan, D. Sornette, D. von Seggern, F. Omori, G. Zöller, G. Zöller, G. Zöller, H. J. Jensen, K. R. Felzer, L. M. Jones, P. Bak, R. Burridge, T. Utsu, Y. Y. Kagan, Y. Y. Kagan, Y. Y. Kagan   +23 more
core   +5 more sources

Prediction probabilities from foreshocks [PDF]

Journal of Geophysical Research: Solid Earth, 1991
When any earthquake occurs, the possibility that it might be a foreshock increases the probability that a larger earthquake will occur nearby within the next few days. Clearly, the probability of a very large earthquake ought to be higher if the candidate foreshock were on or near a fault capable of producing that very large mainshock, especially if ...
Agnew, Duncan Carr, Jones, Lucile M.
openaire   +3 more sources

The ULF wave foreshock boundary: Cluster observations [PDF]

, 2015
The interaction of backstreaming ions with the incoming solar wind in the upstream region of the bow shock gives rise to a number of plasma instabilities from which ultra-low frequency (ULF) waves can grow.
Andres, Nahuel, Bertucci, Cesar, Gomez, Daniel, Mazelle, Christian, Meziane, Karim   +4 more
core   +2 more sources