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Sökning: (L773:0094 8276) pers:(Lindqvist Per Arne) > Dayside response of...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003606naa a2200445 4500
001oai:DiVA.org:kth-215451
003SwePub
008171019s2017 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2154512 URI
0247 a https://doi.org/10.1002/2017GL0748952 DOI
040 a (SwePub)kth
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Cattell, C.4 aut
2451 0a Dayside response of the magnetosphere to a small shock compression :b Van Allen Probes, Magnetospheric MultiScale, and GOES-13
264 1b AMER GEOPHYSICAL UNION,c 2017
338 a print2 rdacarrier
500 a QC 20171019
520 a Observations from Magnetospheric MultiScale (similar to 8 Re) and Van Allen Probes (similar to 5 and 4 Re) show that the initial dayside response to a small interplanetary shock is a double-peaked dawnward electric field, which is distinctly different from the usual bipolar (dawnward and then duskward) signature reported for large shocks. The associated ExB flow is radially inward. The shock compressed the magnetopause to inside 8 Re, as observed by Magnetospheric MultiScale (MMS), with a speed that is comparable to the ExB flow. The magnetopause speed and the ExB speeds were significantly less than the propagation speed of the pulse from MMS to the Van Allen Probes and GOES-13, which is consistent with the MHD fast mode. There were increased fluxes of energetic electrons up to several MeV. Signatures of drift echoes and response to ULF waves also were seen. These observations demonstrate that even very weak shocks can have significant impact on the radiation belts. Plain Language Summary Very fast moving clouds of charged particles are ejected from the Sun when it is active. Shock waves often develop at the cloud front as it plows through the solar wind. When the shock hits the Earth's magnetic field, it can push the Earth's magnetic shield inside the distance where many communication and weather satellites orbit. The energy associated with the shock can also very rapidly increase the energy of electrons trapped in the Earth's magnetic field in the Van Allen Radiation belts. These electrons can damage satellites. We have used four satellites arrayed at different locations on the dayside of the Earth's magnetic field to show, for the first time, that small shocks have a different effect than the large shocks that are usually studied but that even small shocks can produce relativistic electrons.
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Multidisciplinär geovetenskap0 (SwePub)105032 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geosciences, Multidisciplinary0 (SwePub)105032 hsv//eng
7001 a Breneman, A.4 aut
7001 a Colpitts, C.4 aut
7001 a Dombeck, J.4 aut
7001 a Thaller, S.4 aut
7001 a Tian, S.4 aut
7001 a Wygant, J.4 aut
7001 a Fennell, J.4 aut
7001 a Hudson, M. K.4 aut
7001 a Ergun, Robert4 aut
7001 a Russell, C. T.4 aut
7001 a Torbert, Roy4 aut
7001 a Lindqvist, Per-Arneu KTH,Rymd- och plasmafysik4 aut0 (Swepub:kth)u1yukyk9
7001 a Burch, J.4 aut
7102 a KTHb Rymd- och plasmafysik4 org
7730 t Geophysical Research Lettersd : AMER GEOPHYSICAL UNIONg 44:17, s. 8712-8720q 44:17<8712-8720x 0094-8276x 1944-8007
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-215451
8564 8u https://doi.org/10.1002/2017GL074895

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