Imperial College London
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DrMartinArcher

Faculty of Natural Sciences, Department of Physics

Stephen Hawking Fellow (Advanced Research Fellow)
 
 
 
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Contact

 

+44 (0)20 7594 7661m.archer10 Website

 
 
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Location

 

6M58Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Turc:2019:10.1029/2019GL084437,
author = {Turc, L and Roberts, OW and Archer, MO and Palmroth, M and Battarbee, M and Brito, T and Ganse, U and Grandin, M and Pfau-Kempf, Y and Escoubet, CP and Dandouras, I},
doi = {10.1029/2019GL084437},
journal = {Geophysical Research Letters},
pages = {12644--12653},
title = {First observations of the disruption of the Earth's foreshock wave field During magnetic clouds},
url = {http://dx.doi.org/10.1029/2019GL084437},
volume = {46},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The foreshock, extending upstream of Earth's bow shock, is a region of intense electromagnetic wave activity and nonlinear phenomena, which can have global effects on geospace. It is also the first geophysical region encountered by solar wind disturbances journeying toward Earth. Here, we present the first observations of considerable modifications of the foreshock wave field during extreme events of solar origin called magnetic clouds. Cluster's multispacecraft data reveal that the typical quasimonochromatic foreshock waves can be completely replaced by a superposition of waves each with shorter correlation lengths. Global numerical simulations further confirm that the foreshock wave field is more intricate and organized at smaller scales. Ion measurements suggest that changes in shockreflected particle properties may cause these modifications of the wave field. This state of the foreshock is encountered only during extreme events at Earth, but intense magnetic fields are typical close to the Sun or other stars.
AU  - Turc,L
AU  - Roberts,OW
AU  - Archer,MO
AU  - Palmroth,M
AU  - Battarbee,M
AU  - Brito,T
AU  - Ganse,U
AU  - Grandin,M
AU  - Pfau-Kempf,Y
AU  - Escoubet,CP
AU  - Dandouras,I
DO  - 10.1029/2019GL084437
EP  - 12653
PY  - 2019///
SN  - 0094-8276
SP  - 12644
TI  - First observations of the disruption of the Earth's foreshock wave field During magnetic clouds
T2  - Geophysical Research Letters
UR  - http://dx.doi.org/10.1029/2019GL084437
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000497053200001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/86352
VL  - 46
ER  -
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