Eintrag weiter verarbeiten
Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities
Gespeichert in:
| Zeitschriftentitel: | Journal of Geophysical Research: Space Physics |
|---|---|
| Personen und Körperschaften: | |
| In: | Journal of Geophysical Research: Space Physics, 102, 1997, A11, S. 24265-24281 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
|
| Schlagwörter: |
| author_facet |
Lin, Y. Lin, Y. |
|---|---|
| author |
Lin, Y. |
| spellingShingle |
Lin, Y. Journal of Geophysical Research: Space Physics Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities Paleontology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Earth-Surface Processes Geochemistry and Petrology Soil Science Water Science and Technology Ecology Aquatic Science Forestry Oceanography Geophysics |
| author_sort |
lin, y. |
| spelling |
Lin, Y. 0148-0227 American Geophysical Union (AGU) Paleontology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Earth-Surface Processes Geochemistry and Petrology Soil Science Water Science and Technology Ecology Aquatic Science Forestry Oceanography Geophysics http://dx.doi.org/10.1029/97ja01989 <jats:p>Two‐dimensional hybrid simulations using a curvilinear coordinate system are carried out to study the interaction of the Earth's bow shock (BS) with an interplanetary directional discontinuity. In particular, plasma flow patterns are examined. In the interaction of the bow shock with an interplanetary tangential discontinuity (TD), a bulge of magnetic field and plasma may be present near the intersection between the fronts of the BS and the TD. The bulge expands to the upstream and is embedded in the solar wind. High magnetic field and ion density are present in the boundary regions of the bulge, and the temperature in the bulge is significantly higher than that in the ambient solar wind. A core of low density and sometimes low field is present inside the bulge. The flow speed changes from supersonic in the solar wind to subsonic throughout the bulge. A strong sunward deflection in flow velocity is present both in the bulge and in the magnetosheath behind the bulge. The presence of such hot anomalous flows depends on the direction and symmetry condition of the upstream motional electric field. The formation of the bulge and the associated anomalous flows is found to be mainly due to (1) the reflected ions which are focused to TD under the proper electric field conditions, (2) the unbalanced pressure associated with the geometry change and reformation of the BS which causes the expansion of downstream and the sunward motion of ions, or (3) the occurrence of magnetic reconnection in the current sheet. In the interaction of the BS with an interplanetary rotational discontinuity (RD), the flow may be deflected sunward by the magnetic tension force associated with the resulting rotational discontinuities and slow shocks in the magnetosheath. It is suggested that the observed anomalous flow events upstream of the bow shock may be due to the BS/TD interaction, and both BS/RD and BS/TD interactions may generate strong sunward flow deflections in the magnetosheath.</jats:p> Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities Journal of Geophysical Research: Space Physics |
| doi_str_mv |
10.1029/97ja01989 |
| facet_avail |
Online Free |
| finc_class_facet |
Geologie und Paläontologie Geographie Chemie und Pharmazie Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft Biologie Allgemeine Naturwissenschaft Physik Technik |
| format |
ElectronicArticle |
| fullrecord |
blob:ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTAyOS85N2phMDE5ODk |
| id |
ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTAyOS85N2phMDE5ODk |
| institution |
DE-Brt1 DE-Zwi2 DE-D161 DE-Zi4 DE-Gla1 DE-15 DE-Pl11 DE-Rs1 DE-14 DE-105 DE-Ch1 DE-L229 DE-D275 DE-Bn3 |
| imprint |
American Geophysical Union (AGU), 1997 |
| imprint_str_mv |
American Geophysical Union (AGU), 1997 |
| issn |
0148-0227 |
| issn_str_mv |
0148-0227 |
| language |
English |
| mega_collection |
American Geophysical Union (AGU) (CrossRef) |
| match_str |
lin1997generationofanomalousflowsnearthebowshockbyitsinteractionwithinterplanetarydiscontinuities |
| publishDateSort |
1997 |
| publisher |
American Geophysical Union (AGU) |
| recordtype |
ai |
| record_format |
ai |
| series |
Journal of Geophysical Research: Space Physics |
| source_id |
49 |
| title |
Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities |
| title_unstemmed |
Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities |
| title_full |
Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities |
| title_fullStr |
Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities |
| title_full_unstemmed |
Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities |
| title_short |
Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities |
| title_sort |
generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities |
| topic |
Paleontology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Earth-Surface Processes Geochemistry and Petrology Soil Science Water Science and Technology Ecology Aquatic Science Forestry Oceanography Geophysics |
| url |
http://dx.doi.org/10.1029/97ja01989 |
| publishDate |
1997 |
| physical |
24265-24281 |
| description |
<jats:p>Two‐dimensional hybrid simulations using a curvilinear coordinate system are carried out to study the interaction of the Earth's bow shock (BS) with an interplanetary directional discontinuity. In particular, plasma flow patterns are examined. In the interaction of the bow shock with an interplanetary tangential discontinuity (TD), a bulge of magnetic field and plasma may be present near the intersection between the fronts of the BS and the TD. The bulge expands to the upstream and is embedded in the solar wind. High magnetic field and ion density are present in the boundary regions of the bulge, and the temperature in the bulge is significantly higher than that in the ambient solar wind. A core of low density and sometimes low field is present inside the bulge. The flow speed changes from supersonic in the solar wind to subsonic throughout the bulge. A strong sunward deflection in flow velocity is present both in the bulge and in the magnetosheath behind the bulge. The presence of such hot anomalous flows depends on the direction and symmetry condition of the upstream motional electric field. The formation of the bulge and the associated anomalous flows is found to be mainly due to (1) the reflected ions which are focused to TD under the proper electric field conditions, (2) the unbalanced pressure associated with the geometry change and reformation of the BS which causes the expansion of downstream and the sunward motion of ions, or (3) the occurrence of magnetic reconnection in the current sheet. In the interaction of the BS with an interplanetary rotational discontinuity (RD), the flow may be deflected sunward by the magnetic tension force associated with the resulting rotational discontinuities and slow shocks in the magnetosheath. It is suggested that the observed anomalous flow events upstream of the bow shock may be due to the BS/TD interaction, and both BS/RD and BS/TD interactions may generate strong sunward flow deflections in the magnetosheath.</jats:p> |
| container_issue |
A11 |
| container_start_page |
24265 |
| container_title |
Journal of Geophysical Research: Space Physics |
| container_volume |
102 |
| format_de105 |
Article, E-Article |
| format_de14 |
Article, E-Article |
| format_de15 |
Article, E-Article |
| format_de520 |
Article, E-Article |
| format_de540 |
Article, E-Article |
| format_dech1 |
Article, E-Article |
| format_ded117 |
Article, E-Article |
| format_degla1 |
E-Article |
| format_del152 |
Buch |
| format_del189 |
Article, E-Article |
| format_dezi4 |
Article |
| format_dezwi2 |
Article, E-Article |
| format_finc |
Article, E-Article |
| format_nrw |
Article, E-Article |
| _version_ |
1792348518954827785 |
| geogr_code |
not assigned |
| last_indexed |
2024-03-01T18:10:45.119Z |
| geogr_code_person |
not assigned |
| openURL |
url_ver=Z39.88-2004&ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fvufind.svn.sourceforge.net%3Agenerator&rft.title=Generation+of+anomalous+flows+near+the+bow+shock+by+its+interaction+with+interplanetary+discontinuities&rft.date=1997-11-01&genre=article&issn=0148-0227&volume=102&issue=A11&spage=24265&epage=24281&pages=24265-24281&jtitle=Journal+of+Geophysical+Research%3A+Space+Physics&atitle=Generation+of+anomalous+flows+near+the+bow+shock+by+its+interaction+with+interplanetary+discontinuities&aulast=Lin&aufirst=Y.&rft_id=info%3Adoi%2F10.1029%2F97ja01989&rft.language%5B0%5D=eng |
| SOLR | |
| _version_ | 1792348518954827785 |
| author | Lin, Y. |
| author_facet | Lin, Y., Lin, Y. |
| author_sort | lin, y. |
| container_issue | A11 |
| container_start_page | 24265 |
| container_title | Journal of Geophysical Research: Space Physics |
| container_volume | 102 |
| description | <jats:p>Two‐dimensional hybrid simulations using a curvilinear coordinate system are carried out to study the interaction of the Earth's bow shock (BS) with an interplanetary directional discontinuity. In particular, plasma flow patterns are examined. In the interaction of the bow shock with an interplanetary tangential discontinuity (TD), a bulge of magnetic field and plasma may be present near the intersection between the fronts of the BS and the TD. The bulge expands to the upstream and is embedded in the solar wind. High magnetic field and ion density are present in the boundary regions of the bulge, and the temperature in the bulge is significantly higher than that in the ambient solar wind. A core of low density and sometimes low field is present inside the bulge. The flow speed changes from supersonic in the solar wind to subsonic throughout the bulge. A strong sunward deflection in flow velocity is present both in the bulge and in the magnetosheath behind the bulge. The presence of such hot anomalous flows depends on the direction and symmetry condition of the upstream motional electric field. The formation of the bulge and the associated anomalous flows is found to be mainly due to (1) the reflected ions which are focused to TD under the proper electric field conditions, (2) the unbalanced pressure associated with the geometry change and reformation of the BS which causes the expansion of downstream and the sunward motion of ions, or (3) the occurrence of magnetic reconnection in the current sheet. In the interaction of the BS with an interplanetary rotational discontinuity (RD), the flow may be deflected sunward by the magnetic tension force associated with the resulting rotational discontinuities and slow shocks in the magnetosheath. It is suggested that the observed anomalous flow events upstream of the bow shock may be due to the BS/TD interaction, and both BS/RD and BS/TD interactions may generate strong sunward flow deflections in the magnetosheath.</jats:p> |
| doi_str_mv | 10.1029/97ja01989 |
| facet_avail | Online, Free |
| finc_class_facet | Geologie und Paläontologie, Geographie, Chemie und Pharmazie, Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft, Biologie, Allgemeine Naturwissenschaft, Physik, Technik |
| format | ElectronicArticle |
| format_de105 | Article, E-Article |
| format_de14 | Article, E-Article |
| format_de15 | Article, E-Article |
| format_de520 | Article, E-Article |
| format_de540 | Article, E-Article |
| format_dech1 | Article, E-Article |
| format_ded117 | Article, E-Article |
| format_degla1 | E-Article |
| format_del152 | Buch |
| format_del189 | Article, E-Article |
| format_dezi4 | Article |
| format_dezwi2 | Article, E-Article |
| format_finc | Article, E-Article |
| format_nrw | Article, E-Article |
| geogr_code | not assigned |
| geogr_code_person | not assigned |
| id | ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTAyOS85N2phMDE5ODk |
| imprint | American Geophysical Union (AGU), 1997 |
| imprint_str_mv | American Geophysical Union (AGU), 1997 |
| institution | DE-Brt1, DE-Zwi2, DE-D161, DE-Zi4, DE-Gla1, DE-15, DE-Pl11, DE-Rs1, DE-14, DE-105, DE-Ch1, DE-L229, DE-D275, DE-Bn3 |
| issn | 0148-0227 |
| issn_str_mv | 0148-0227 |
| language | English |
| last_indexed | 2024-03-01T18:10:45.119Z |
| match_str | lin1997generationofanomalousflowsnearthebowshockbyitsinteractionwithinterplanetarydiscontinuities |
| mega_collection | American Geophysical Union (AGU) (CrossRef) |
| physical | 24265-24281 |
| publishDate | 1997 |
| publishDateSort | 1997 |
| publisher | American Geophysical Union (AGU) |
| record_format | ai |
| recordtype | ai |
| series | Journal of Geophysical Research: Space Physics |
| source_id | 49 |
| spelling | Lin, Y. 0148-0227 American Geophysical Union (AGU) Paleontology Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Earth-Surface Processes Geochemistry and Petrology Soil Science Water Science and Technology Ecology Aquatic Science Forestry Oceanography Geophysics http://dx.doi.org/10.1029/97ja01989 <jats:p>Two‐dimensional hybrid simulations using a curvilinear coordinate system are carried out to study the interaction of the Earth's bow shock (BS) with an interplanetary directional discontinuity. In particular, plasma flow patterns are examined. In the interaction of the bow shock with an interplanetary tangential discontinuity (TD), a bulge of magnetic field and plasma may be present near the intersection between the fronts of the BS and the TD. The bulge expands to the upstream and is embedded in the solar wind. High magnetic field and ion density are present in the boundary regions of the bulge, and the temperature in the bulge is significantly higher than that in the ambient solar wind. A core of low density and sometimes low field is present inside the bulge. The flow speed changes from supersonic in the solar wind to subsonic throughout the bulge. A strong sunward deflection in flow velocity is present both in the bulge and in the magnetosheath behind the bulge. The presence of such hot anomalous flows depends on the direction and symmetry condition of the upstream motional electric field. The formation of the bulge and the associated anomalous flows is found to be mainly due to (1) the reflected ions which are focused to TD under the proper electric field conditions, (2) the unbalanced pressure associated with the geometry change and reformation of the BS which causes the expansion of downstream and the sunward motion of ions, or (3) the occurrence of magnetic reconnection in the current sheet. In the interaction of the BS with an interplanetary rotational discontinuity (RD), the flow may be deflected sunward by the magnetic tension force associated with the resulting rotational discontinuities and slow shocks in the magnetosheath. It is suggested that the observed anomalous flow events upstream of the bow shock may be due to the BS/TD interaction, and both BS/RD and BS/TD interactions may generate strong sunward flow deflections in the magnetosheath.</jats:p> Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities Journal of Geophysical Research: Space Physics |
| spellingShingle | Lin, Y., Journal of Geophysical Research: Space Physics, Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities, Paleontology, Space and Planetary Science, Earth and Planetary Sciences (miscellaneous), Atmospheric Science, Earth-Surface Processes, Geochemistry and Petrology, Soil Science, Water Science and Technology, Ecology, Aquatic Science, Forestry, Oceanography, Geophysics |
| title | Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities |
| title_full | Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities |
| title_fullStr | Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities |
| title_full_unstemmed | Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities |
| title_short | Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities |
| title_sort | generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities |
| title_unstemmed | Generation of anomalous flows near the bow shock by its interaction with interplanetary discontinuities |
| topic | Paleontology, Space and Planetary Science, Earth and Planetary Sciences (miscellaneous), Atmospheric Science, Earth-Surface Processes, Geochemistry and Petrology, Soil Science, Water Science and Technology, Ecology, Aquatic Science, Forestry, Oceanography, Geophysics |
| url | http://dx.doi.org/10.1029/97ja01989 |