Results 11 to 20 of about 6,878 (250)

Spontaneous Hot Flow Anomalies in Earth's Foreshock

Journal of Geophysical Research: Space Physics
Abstract In recent years, we have learned that foreshock transients play an influential role in solar wind coupling with Earth's magnetosphere. These transients include spontaneous hot flow anomalies (SHFAs), which are characterized by dips in magnetic field magnitude and ion density, enhanced temperature, decelerated and deflected ...
D Rojas-Castillo, X Blanco-Cano, P Kajdič   +2 more
exaly   +2 more sources

Observations and Simulations of a Double‐Core Hot Flow Anomaly

Geophysical Research Letters
Hot Flow anomalies (HFAs), one of the most well‐analyzed transient phenomena in the Earth's foreshock, are known as kinetic structures driven by tangential discontinuities (TDs).
Xi Lu, Antonius Otto, Hui Zhang, Terry Liu, Xingran Chen   +4 more
doaj   +2 more sources

Formation mechanism and evaluation of geothermal resources in Yanqi Qikexing town, Xinjiang [PDF]

Scientific Reports
The study of geothermal genesis mechanism is the basis for the evaluation and effective development of geothermal field resources. On the basis of previous research results, the formation mechanism of geothermal field in Qikexing Township was analysed ...
Mengmeng Zhao, Kai Chen, Jinyu Chang, Genyi He, Feng Chen, Lifeng Chen, Zhiqi Liu, Yuhang Huang   +7 more
doaj   +2 more sources

Foreshock cavitons and spontaneous hot flow anomalies: a statistical study with a global hybrid-Vlasov simulation [PDF]

Annales Geophysicae, 2021
The foreshock located upstream of Earth's bow shock hosts a wide variety of phenomena related to the reflection of solar wind particles from the bow shock and the subsequent formation of ultra-low-frequency (ULF) waves.
V. Tarvus, L. Turc, M. Battarbee, J. Suni, X. Blanco-Cano, U. Ganse, Y. Pfau-Kempf, M. Alho, M. Dubart, M. Grandin, A. Johlander, K. Papadakis, M. Palmroth, M. Palmroth   +13 more
doaj   +1 more source

On the morphology and amplitude of 2D and 3D thermal anomalies induced by buoyancy-driven flow within and around fault zones [PDF]

Solid Earth, 2020
In the first kilometers of the subsurface, temperature anomalies due to heat conduction processes rarely exceed 20–30 ∘C. When fault zones are sufficiently permeable, fluid flow may lead to much larger thermal anomalies, as evidenced by the ...
L. Guillou-Frottier, L. Guillou-Frottier, H. Duwiquet, H. Duwiquet, H. Duwiquet, G. Launay, A. Taillefer, V. Roche, G. Link   +8 more
doaj   +1 more source

A global study of hot flow anomalies using Cluster multi-spacecraft measurements [PDF]

Annales Geophysicae, 2009
Hot flow anomalies (HFAs) are studied using observations of the magnetometer and the plasma instrument aboard the four Cluster spacecraft. We study several specific features of tangential discontinuities on the basis of Cluster measurements from the ...
G. Facskó, G. Facskó, Z. Németh, G. Erdős, A. Kis, I. Dandouras   +5 more
doaj   +1 more source

Global Asymmetries of Hot Flow Anomalies

Geophysical Research Letters, 2022
AbstractA three‐dimensional global hybrid simulation is conducted for the interaction of the Earth's bow shock with an interplanetary directional tangential discontinuity (TD) whose normal lies in the equatorial plane. Although the convection electric field points into the TD from its trailing side both north and south of the equator, the interaction ...
Yu Lin, Xueyi Wang, David G. Sibeck, Chih‐Ping Wang, Sun‐Hee Lee   +4 more
openaire   +1 more source

European Summer Synoptic Circulations and Their Observed 2022 and Projected Influence on Hot Extremes and Dry Spells

Geophysical Research Letters, 2023
In 2022, western Europe experienced its hottest summer on record and widespread dry conditions, with substantial impacts on health, water and vegetation.
Pedro Herrera‐Lormendez, Hervé Douville, Jörg Matschullat   +2 more
doaj   +1 more source

Cavitons and spontaneous hot flow anomalies in a hybrid-Vlasov global magnetospheric simulation [PDF]

Annales Geophysicae, 2018
In this paper we present the first identification of foreshock cavitons and the formation of spontaneous hot flow anomalies (SHFAs) with the Vlasiator global magnetospheric hybrid-Vlasov simulation code. In agreement with previous studies we show that
X. Blanco-Cano, M. Battarbee, L. Turc, A. P. Dimmock, A. P. Dimmock, E. K. J. Kilpua, S. Hoilijoki, U. Ganse, D. G. Sibeck, P. A. Cassak, R. C. Fear, R. Jarvinen, R. Jarvinen, L. Juusola, L. Juusola, Y. Pfau-Kempf, R. Vainio, M. Palmroth, M. Palmroth   +18 more
doaj   +1 more source

Ion Kinetics in a Hot Flow Anomaly: MMS Observations [PDF]

Geophysical Research Letters, 2018
AbstractHot Flow Anomalies (HFAs) are transients observed at planetary bow shocks, formed by the shock interaction with a convected interplanetary current sheet. The primary interpretation relies on reflected ions channeled upstream along the current sheet. The short duration of HFAs has made direct observations of this process difficult.
Steven J Schwartz, Levon Avanov, Drew Turner, Hui Zhang, Imogen Gingell, Jonathan P Eastwood, Daniel J Gershman, Andreas Johlander, Christopher T Russell, James L Burch, John C Dorelli, Stefan Eriksson, Robert E Ergun, Stephen A Fuselier, Barbara L Giles, Katherine A Goodrich, Yuri V Khotyaintsev, Benoit Lavraud, Per‐Arne Lindqvist, Mitsuo Oka, Tai‐Duc Phan, Robert J Strangeway, Karlheinz J Trattner, Roy B Torbert, Andris Vaivads, Hanying Wei, Victoria Wilder   +26 more
openaire   +3 more sources