Results 1 to 10 of about 4,706 (153)

From Foreshock 30-Second Waves to Magnetospheric Pc3 Waves. [PDF]

Space Sci Rev
Ultra-low frequency waves, with periods between 1-1000 s, are ubiquitous in the near-Earth plasma environment and play an important role in magnetospheric dynamics and in the transfer of electromagnetic energy from the solar wind to the magnetosphere.
Turc L, Takahashi K, Kajdič P, Kilpua EKJ, Sarris T, Palmroth M, Soucek J, Pfau-Kempf Y, Dimmock A, Takahashi N.   +9 more
europepmc   +2 more sources

New Physical Implications From Revisiting Foreshock Activity in Southern California

Geophysical Research Letters, 2023
Foreshock analysis promises new insights into the earthquake nucleation process and could potentially improve earthquake forecasting. Well‐performing clustering models like the Epidemic‐Type Aftershock Sequence (ETAS) model assume that foreshocks and ...
Ester Manganiello, Marcus Herrmann, Warner Marzocchi   +2 more
doaj   +2 more sources

Transmission of foreshock waves through Earth's bow shock. [PDF]

Nat Phys, 2023
The Earth’s bow shock results from the interaction of the solar wind with the terrestrial magnetic field. With global numerical simulations and spacecraft observations, the transmission of fast magnetosonic waves through the bow shock is revealed.
Turc L, Roberts OW, Verscharen D, Dimmock AP, Kajdič P, Palmroth M, Pfau-Kempf Y, Johlander A, Dubart M, Kilpua EKJ, Soucek J, Takahashi K, Takahashi N, Battarbee M, Ganse U.   +14 more
europepmc   +2 more sources

Connection Between Foreshock Structures and the Generation of Magnetosheath Jets: Vlasiator Results

Geophysical Research Letters, 2021
Earth’s magnetosheath consists of shocked solar wind plasma that has been compressed and slowed down at the Earth’s bow shock. Magnetosheath jets are pulses of enhanced dynamic pressure in the magnetosheath. Jets have been observed by numerous spacecraft
J. Suni, M. Palmroth, L. Turc, M. Battarbee, A. Johlander, V. Tarvus, M. Alho, M. Bussov, M. Dubart, U. Ganse, M. Grandin, K. Horaites, T. Manglayev, K. Papadakis, Y. Pfau‐Kempf, H. Zhou   +15 more
doaj   +2 more sources

Irregular rupture process of the 2022 Taitung, Taiwan, earthquake sequence [PDF]

Scientific Reports, 2023
In September 2022, two destructive earthquakes of moment magnitude (M w) 6.6 (foreshock) and 7.1 (mainshock) occurred in Taitung County, south-eastern Taiwan.
Yuji Yagi, Ryo Okuwaki, Bogdan Enescu, Junjie Lu   +3 more
doaj   +2 more sources

A laboratory perspective on accelerating preparatory processes before earthquakes and implications for foreshock detectability. [PDF]

Nat Commun
Dynamic failure in the laboratory is commonly preceded by many foreshocks which accompany premonitory aseismic slip. Aseismic slip is also thought to govern earthquake nucleation in nature, yet, foreshocks are rare. Here, we examine how heterogeneity due
Goebel THW, Schuster V, Kwiatek G, Pandey K, Dresen G.   +4 more
europepmc   +2 more sources

Statistical Study of Foreshock Transients in the Midtail Foreshock

Journal of Geophysical Research: Space Physics, 2021
In the dayside foreshock, many foreshock transients have been observed and simulated. Because of their strong dynamic pressure perturbations, foreshock transients can disturb the local bow shock, magnetosheath, magnetopause, and thus the magnetosphere ...
Hui Zhang, Xueyi Wang, Vassilis Angelopoulos   +2 more
exaly   +2 more sources

Pervasive Foreshock Activity Across Southern California

Geophysical Research Letters, 2019
Foreshocks have been documented as preceding less than half of all mainshock earthquakes. These observations are difficult to reconcile with laboratory earthquake experiments and theoretical models of earthquake nucleation, which both suggest that ...
Daniel T. Trugman, Zachary E. Ross
doaj   +2 more sources

Relationship Between the 2019 Ridgecrest, California, M_W7.1 Earthquake and Its M_W6.4 Foreshock Sequence [PDF]

Entropy
The 2019 Ridgecrest MW7.1 earthquake has received significant attention due to its complex fault activity. It is also noticeable for its MW6.4 foreshock sequence.
Jianchang Zheng, Zhengshuai Zhang, Xiaohan Li   +2 more
doaj   +2 more sources

Foreshock migration preceding the 2016 Mw 7.0 Kumamoto earthquake, Japan

Geophysical Research Letters, 2016
We investigated the spatiotemporal evolution of an earthquake sequence following a series of large shallow intraplate earthquakes, including a Mw 6.2 foreshock and Mw 7.0 main shock, in the Kumamoto area of Kyushu, SW Japan.
Aitaro Kato
exaly   +2 more sources