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Reference TypeJournal Article
Sitemtc-m21d.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identifier8JMKD3MGP3W34T/48P5UPB
Repositorysid.inpe.br/mtc-m21d/2023/03.21.14.21
Last Update2023:03.21.14.21.11 (UTC) simone
Metadata Repositorysid.inpe.br/mtc-m21d/2023/03.21.14.21.11
Metadata Last Update2024:01.02.17.16.41 (UTC) administrator
DOI10.3847/1538-4357/acb266
ISSN0004-637X
1538-4357
Citation KeyDaiHWYGDLRG:2023:SpChGe
TitleGeoeffectiveness of interplanetary Alfvén waves. II. spectral characteristics and geomagnetic responses
Year2023
MonthMar.
Access Date2024, May 19
Type of Workjournal article
Secondary TypePRE PI
Number of Files1
Size1013 KiB
2. Context
Author1 Dai, Lei
2 Han, Yimin
3 Wang, Chi
4 Yao, Shuo
5 Gonzalez Alarcon, Walter Demétrio
6 Duan, Suping
7 Lavraud, Benoit
8 Ren, Yong
9 Guo, Zhenyuan
Resume Identifier1
2
3
4
5 8JMKD3MGP5W/3C9JJC4
ORCID1 0000-0002-5122-3066
2 0000-0003-0097-7818
3 0000-0001-6991-9398
4 0000-0003-4267-0486
5
6 0000-0002-4835-6888
7 0000-0001-6807-8494
Group1
2
3
4
5 DIHPA-CGCE-INPE-MCTI-GOV-BR
Affiliation1 Chinese Academy of Sciences
2 Chinese Academy of Sciences
3 Chinese Academy of Sciences
4 China University of Geosciences
5 Instituto Nacional de Pesquisas Espaciais (INPE)
6 Chinese Academy of Sciences
7 Universite Bordeaux
8 Chinese Academy of Sciences
9 Chinese Academy of Sciences
Author e-Mail Address1 ldai@spaceweather.ac.cn
2
3
4
5 walterdgalarcon@yahoo.com
JournalAstrophysical Journal
Volume945
Number1
Pagese48
Secondary MarkA1_QUÍMICA A1_INTERDISCIPLINAR A1_GEOCIÊNCIAS A1_ENGENHARIAS_III A1_ASTRONOMIA_/_FÍSICA A2_ENGENHARIAS_IV B2_ENSINO
History (UTC)2023-03-21 14:21:11 :: simone -> administrator ::
2024-01-02 17:16:41 :: administrator -> simone :: 2023
3. Content and structure
Is the master or a copy?is the master
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Transferable1
Content TypeExternal Contribution
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AbstractUsing multipoint observations over 10 yr near 1 au, we investigate the spectra (5 minutes to 2 hr) of interplanetary Alfvén waves and the responses in the geomagnetic activities. We compute the two-point correlations of the wave magnetic field between the ACE and the THEMIS spacecraft, which are separated by ∼200 Earth radius (R E) in the solar wind. Alfvén waves associated with high two-point correlations exhibit steep spectra (spectra index ∼−1.63). Such Alfvén waves occur mostly in slow-speed streams. By contrast, Alfvén waves with low two-point correlations exhibit flatter spectra (spectra index ∼−1.51) with a relative enhancement of power above 2 × 10−4 Hz. The occurrence of Alfvén waves with low two-point correlations is more equally distributed between high-speed and low-speed streams. In general, interplanetary Alfvén waves show correlations with moderate geomagnetic responses in symmetric ring-current intensity, SuperMAG electrojet (SME), and Kp indices. Statistical analyses indicate that the Alfvén waves with flat spectra correspond to stronger responses in the geomagnetic indices than those with steep spectra, suggesting the importance of the tens of minutes (30-90 minutes) Alfvénic power spectra in the generation of SME/Auroral Electrojets. These observations may shed light on the response of the magnetosphere to fluctuating interplanetary magnetic field B z.
AreaCEA
Arrangementurlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGCE > Geoeffectiveness of interplanetary...
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data URLhttp://urlib.net/ibi/8JMKD3MGP3W34T/48P5UPB
zipped data URLhttp://urlib.net/zip/8JMKD3MGP3W34T/48P5UPB
Languageen
Target FileHan_2023_ApJ_945_48.pdf
User Groupsimone
Visibilityshown
Archiving Policyallowpublisher allowfinaldraft
Update Permissionnot transferred
5. Allied materials
Next Higher Units8JMKD3MGPCW/46KTFK8
Citing Item Listsid.inpe.br/mtc-m21/2012/07.13.15.01.50 5
sid.inpe.br/bibdigital/2022/04.03.17.52 1
DisseminationWEBSCI; PORTALCAPES; COMPENDEX; SCOPUS.
Host Collectionurlib.net/www/2021/06.04.03.40
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