Transient composite electric field disturbances near dip equator associated with auroral substorms
Ionosonde data of Kodaikanal (Geog.Long. 77° 29′E, dip 3.0°N) and Huancayo (Geog.Long. 75°18′W, dip 2.0°N) are used to show the simultaneous occurrence of a transient disturbance in F region height of composite polarity in day and night sectors near the dip equator during the auroral substorm activi...
Gespeichert in:
| Veröffentlicht in: | Geophysical research letters 1992-07, Vol.19 (14), p.1451-1454 |
|---|---|
| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 1454 |
|---|---|
| container_issue | 14 |
| container_start_page | 1451 |
| container_title | Geophysical research letters |
| container_volume | 19 |
| creator | Sastri, J. Hanumath Ramesh, K. B. Rao, H. N. Ranganath |
| description | Ionosonde data of Kodaikanal (Geog.Long. 77° 29′E, dip 3.0°N) and Huancayo (Geog.Long. 75°18′W, dip 2.0°N) are used to show the simultaneous occurrence of a transient disturbance in F region height of composite polarity in day and night sectors near the dip equator during the auroral substorm activity on 20 August 1979. At Kodaikanal which is on the nightside at the time of the substorm activity, h′F first underwent an abrupt and rapid decrease (80km in 1 hr) followed by a much larger increase (120km in 1 hr). Perturbation in hpF2 of exactly opposite polarity was simultaneously seen at Huancayo which is on the dayside. The decrease in h′F at Kodaikanal (increase in hpF2 at Huancayo) occurred in association with an increase in polar cap potential drop, ø (estimated from IMF parameters), and the subsequent increase (decrease at Huancayo) with a decrease in polar cap potential. The F‐region height disturbance is interpreted as the manifestation of a global transient composite disturbance in equatorial zonal electric field caused by the prompt penetration of substorm‐related high latitude electric fields into the equatorial ionosphere. The polarity pattern of the electric field disturbance is consistent with the global convection models which predict westward (eastward) electric fields at night (by day) near the geomagnetic equator in response to an increase in polar cap potential drop, and fields of opposite signs for a decrease in polar cap potential. |
| doi_str_mv | 10.1029/92GL01447 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_7012720</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1642292415</sourcerecordid><originalsourceid>FETCH-LOGICAL-c4595-f4c2f9b15a0991aabe16132a1e490739f03bd398438beecfb2e74177a0b3a8773</originalsourceid><addsrcrecordid>eNqFkV9rFDEUxQdRcK0--A2CiNiHqTf_JptHWXQrLLXYir6FTPYOjc5Otrkz1H77Zpmyb-rTDTe_c7iHU1WvOZxxEPaDFesNcKXMk2rBrVL1EsA8rRYAtryFaZ5XL4h-AYAEyRdVe539QBGHkYW02yeKIzLsMYw5BtZF7LdsG2mccuuHgMQG9Lls9gxvJz-mzDxRCtGPuGV3cbxhfsop-57R1FL539HL6lnne8JXj_Ok-v750_XqvN58XX9ZfdzUQWmr604F0dmWaw_Wcu9b5A2XwnNUFoy0Hch2K-1SyWWLGLpWoFHcGA-t9Etj5En1ZvZNNEZHoSQJNyENQwnjDHBhBBTo3Qztc7qdkEa3ixSw7_2AaSIntOVa8KaA7_8J8kYJYYXi-v-oFkqBLWEKejqjISeijJ3b57jz-d5xcIcC3bHAwr59tPUUfN-VokKko0Ar3Rh-sDybsbvY4_3f_dz626YRcDi3ngWlVvxzFPj82zVGGu1-XKzd5epKXl5cnbuf8gGOx7bx</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1524409132</pqid></control><display><type>article</type><title>Transient composite electric field disturbances near dip equator associated with auroral substorms</title><source>Access via Wiley Online Library</source><creator>Sastri, J. Hanumath ; Ramesh, K. B. ; Rao, H. N. Ranganath</creator><creatorcontrib>Sastri, J. Hanumath ; Ramesh, K. B. ; Rao, H. N. Ranganath</creatorcontrib><description>Ionosonde data of Kodaikanal (Geog.Long. 77° 29′E, dip 3.0°N) and Huancayo (Geog.Long. 75°18′W, dip 2.0°N) are used to show the simultaneous occurrence of a transient disturbance in F region height of composite polarity in day and night sectors near the dip equator during the auroral substorm activity on 20 August 1979. At Kodaikanal which is on the nightside at the time of the substorm activity, h′F first underwent an abrupt and rapid decrease (80km in 1 hr) followed by a much larger increase (120km in 1 hr). Perturbation in hpF2 of exactly opposite polarity was simultaneously seen at Huancayo which is on the dayside. The decrease in h′F at Kodaikanal (increase in hpF2 at Huancayo) occurred in association with an increase in polar cap potential drop, ø (estimated from IMF parameters), and the subsequent increase (decrease at Huancayo) with a decrease in polar cap potential. The F‐region height disturbance is interpreted as the manifestation of a global transient composite disturbance in equatorial zonal electric field caused by the prompt penetration of substorm‐related high latitude electric fields into the equatorial ionosphere. The polarity pattern of the electric field disturbance is consistent with the global convection models which predict westward (eastward) electric fields at night (by day) near the geomagnetic equator in response to an increase in polar cap potential drop, and fields of opposite signs for a decrease in polar cap potential.</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1029/92GL01447</identifier><identifier>CODEN: GPRLAJ</identifier><language>eng</language><publisher>Washington, DC: Blackwell Publishing Ltd</publisher><subject>661320 - Auroral, Ionospheric, & Magnetospheric Phenomena- (1992-) ; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; DATA ; Dipping ; DISTURBANCES ; EARTH ATMOSPHERE ; EARTH MAGNETOSPHERE ; Earth, ocean, space ; ELECTRIC FIELDS ; ELECTRIC POTENTIAL ; ELECTRONIC EQUIPMENT ; Equatorial regions ; Exact sciences and technology ; External geophysics ; F REGION ; GEOGRAPHICAL VARIATIONS ; GEOMAGNETIC EQUATOR ; INFORMATION ; IONOSONDES ; IONOSPHERE ; LATITUDE EFFECT ; MAGNETIC BAYS ; Mathematical models ; Night ; Physics of the ionosphere ; PLANETARY IONOSPHERES ; PLASMA DRIFT ; POLAR REGIONS ; Polarity ; RADIO EQUIPMENT ; VARIATIONS</subject><ispartof>Geophysical research letters, 1992-07, Vol.19 (14), p.1451-1454</ispartof><rights>Copyright 1992 by the American Geophysical Union.</rights><rights>1992 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4595-f4c2f9b15a0991aabe16132a1e490739f03bd398438beecfb2e74177a0b3a8773</citedby><cites>FETCH-LOGICAL-c4595-f4c2f9b15a0991aabe16132a1e490739f03bd398438beecfb2e74177a0b3a8773</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F92GL01447$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F92GL01447$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,314,780,784,885,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=5456712$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/7012720$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Sastri, J. Hanumath</creatorcontrib><creatorcontrib>Ramesh, K. B.</creatorcontrib><creatorcontrib>Rao, H. N. Ranganath</creatorcontrib><title>Transient composite electric field disturbances near dip equator associated with auroral substorms</title><title>Geophysical research letters</title><addtitle>Geophys. Res. Lett</addtitle><description>Ionosonde data of Kodaikanal (Geog.Long. 77° 29′E, dip 3.0°N) and Huancayo (Geog.Long. 75°18′W, dip 2.0°N) are used to show the simultaneous occurrence of a transient disturbance in F region height of composite polarity in day and night sectors near the dip equator during the auroral substorm activity on 20 August 1979. At Kodaikanal which is on the nightside at the time of the substorm activity, h′F first underwent an abrupt and rapid decrease (80km in 1 hr) followed by a much larger increase (120km in 1 hr). Perturbation in hpF2 of exactly opposite polarity was simultaneously seen at Huancayo which is on the dayside. The decrease in h′F at Kodaikanal (increase in hpF2 at Huancayo) occurred in association with an increase in polar cap potential drop, ø (estimated from IMF parameters), and the subsequent increase (decrease at Huancayo) with a decrease in polar cap potential. The F‐region height disturbance is interpreted as the manifestation of a global transient composite disturbance in equatorial zonal electric field caused by the prompt penetration of substorm‐related high latitude electric fields into the equatorial ionosphere. The polarity pattern of the electric field disturbance is consistent with the global convection models which predict westward (eastward) electric fields at night (by day) near the geomagnetic equator in response to an increase in polar cap potential drop, and fields of opposite signs for a decrease in polar cap potential.</description><subject>661320 - Auroral, Ionospheric, & Magnetospheric Phenomena- (1992-)</subject><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>DATA</subject><subject>Dipping</subject><subject>DISTURBANCES</subject><subject>EARTH ATMOSPHERE</subject><subject>EARTH MAGNETOSPHERE</subject><subject>Earth, ocean, space</subject><subject>ELECTRIC FIELDS</subject><subject>ELECTRIC POTENTIAL</subject><subject>ELECTRONIC EQUIPMENT</subject><subject>Equatorial regions</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>F REGION</subject><subject>GEOGRAPHICAL VARIATIONS</subject><subject>GEOMAGNETIC EQUATOR</subject><subject>INFORMATION</subject><subject>IONOSONDES</subject><subject>IONOSPHERE</subject><subject>LATITUDE EFFECT</subject><subject>MAGNETIC BAYS</subject><subject>Mathematical models</subject><subject>Night</subject><subject>Physics of the ionosphere</subject><subject>PLANETARY IONOSPHERES</subject><subject>PLASMA DRIFT</subject><subject>POLAR REGIONS</subject><subject>Polarity</subject><subject>RADIO EQUIPMENT</subject><subject>VARIATIONS</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1992</creationdate><recordtype>article</recordtype><recordid>eNqFkV9rFDEUxQdRcK0--A2CiNiHqTf_JptHWXQrLLXYir6FTPYOjc5Otrkz1H77Zpmyb-rTDTe_c7iHU1WvOZxxEPaDFesNcKXMk2rBrVL1EsA8rRYAtryFaZ5XL4h-AYAEyRdVe539QBGHkYW02yeKIzLsMYw5BtZF7LdsG2mccuuHgMQG9Lls9gxvJz-mzDxRCtGPuGV3cbxhfsop-57R1FL539HL6lnne8JXj_Ok-v750_XqvN58XX9ZfdzUQWmr604F0dmWaw_Wcu9b5A2XwnNUFoy0Hch2K-1SyWWLGLpWoFHcGA-t9Etj5En1ZvZNNEZHoSQJNyENQwnjDHBhBBTo3Qztc7qdkEa3ixSw7_2AaSIntOVa8KaA7_8J8kYJYYXi-v-oFkqBLWEKejqjISeijJ3b57jz-d5xcIcC3bHAwr59tPUUfN-VokKko0Ar3Rh-sDybsbvY4_3f_dz626YRcDi3ngWlVvxzFPj82zVGGu1-XKzd5epKXl5cnbuf8gGOx7bx</recordid><startdate>19920724</startdate><enddate>19920724</enddate><creator>Sastri, J. Hanumath</creator><creator>Ramesh, K. B.</creator><creator>Rao, H. N. Ranganath</creator><general>Blackwell Publishing Ltd</general><general>American Geophysical Union</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7TN</scope><scope>F1W</scope><scope>H96</scope><scope>KL.</scope><scope>L.G</scope><scope>7SR</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>JG9</scope><scope>KR7</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>19920724</creationdate><title>Transient composite electric field disturbances near dip equator associated with auroral substorms</title><author>Sastri, J. Hanumath ; Ramesh, K. B. ; Rao, H. N. Ranganath</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4595-f4c2f9b15a0991aabe16132a1e490739f03bd398438beecfb2e74177a0b3a8773</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1992</creationdate><topic>661320 - Auroral, Ionospheric, & Magnetospheric Phenomena- (1992-)</topic><topic>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</topic><topic>DATA</topic><topic>Dipping</topic><topic>DISTURBANCES</topic><topic>EARTH ATMOSPHERE</topic><topic>EARTH MAGNETOSPHERE</topic><topic>Earth, ocean, space</topic><topic>ELECTRIC FIELDS</topic><topic>ELECTRIC POTENTIAL</topic><topic>ELECTRONIC EQUIPMENT</topic><topic>Equatorial regions</topic><topic>Exact sciences and technology</topic><topic>External geophysics</topic><topic>F REGION</topic><topic>GEOGRAPHICAL VARIATIONS</topic><topic>GEOMAGNETIC EQUATOR</topic><topic>INFORMATION</topic><topic>IONOSONDES</topic><topic>IONOSPHERE</topic><topic>LATITUDE EFFECT</topic><topic>MAGNETIC BAYS</topic><topic>Mathematical models</topic><topic>Night</topic><topic>Physics of the ionosphere</topic><topic>PLANETARY IONOSPHERES</topic><topic>PLASMA DRIFT</topic><topic>POLAR REGIONS</topic><topic>Polarity</topic><topic>RADIO EQUIPMENT</topic><topic>VARIATIONS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sastri, J. Hanumath</creatorcontrib><creatorcontrib>Ramesh, K. B.</creatorcontrib><creatorcontrib>Rao, H. N. Ranganath</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sastri, J. Hanumath</au><au>Ramesh, K. B.</au><au>Rao, H. N. Ranganath</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Transient composite electric field disturbances near dip equator associated with auroral substorms</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>1992-07-24</date><risdate>1992</risdate><volume>19</volume><issue>14</issue><spage>1451</spage><epage>1454</epage><pages>1451-1454</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><coden>GPRLAJ</coden><abstract>Ionosonde data of Kodaikanal (Geog.Long. 77° 29′E, dip 3.0°N) and Huancayo (Geog.Long. 75°18′W, dip 2.0°N) are used to show the simultaneous occurrence of a transient disturbance in F region height of composite polarity in day and night sectors near the dip equator during the auroral substorm activity on 20 August 1979. At Kodaikanal which is on the nightside at the time of the substorm activity, h′F first underwent an abrupt and rapid decrease (80km in 1 hr) followed by a much larger increase (120km in 1 hr). Perturbation in hpF2 of exactly opposite polarity was simultaneously seen at Huancayo which is on the dayside. The decrease in h′F at Kodaikanal (increase in hpF2 at Huancayo) occurred in association with an increase in polar cap potential drop, ø (estimated from IMF parameters), and the subsequent increase (decrease at Huancayo) with a decrease in polar cap potential. The F‐region height disturbance is interpreted as the manifestation of a global transient composite disturbance in equatorial zonal electric field caused by the prompt penetration of substorm‐related high latitude electric fields into the equatorial ionosphere. The polarity pattern of the electric field disturbance is consistent with the global convection models which predict westward (eastward) electric fields at night (by day) near the geomagnetic equator in response to an increase in polar cap potential drop, and fields of opposite signs for a decrease in polar cap potential.</abstract><cop>Washington, DC</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/92GL01447</doi><tpages>4</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0094-8276 |
| ispartof | Geophysical research letters, 1992-07, Vol.19 (14), p.1451-1454 |
| issn | 0094-8276 1944-8007 |
| language | eng |
| recordid | cdi_osti_scitechconnect_7012720 |
| source | Access via Wiley Online Library |
| subjects | 661320 - Auroral, Ionospheric, & Magnetospheric Phenomena- (1992-) CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS DATA Dipping DISTURBANCES EARTH ATMOSPHERE EARTH MAGNETOSPHERE Earth, ocean, space ELECTRIC FIELDS ELECTRIC POTENTIAL ELECTRONIC EQUIPMENT Equatorial regions Exact sciences and technology External geophysics F REGION GEOGRAPHICAL VARIATIONS GEOMAGNETIC EQUATOR INFORMATION IONOSONDES IONOSPHERE LATITUDE EFFECT MAGNETIC BAYS Mathematical models Night Physics of the ionosphere PLANETARY IONOSPHERES PLASMA DRIFT POLAR REGIONS Polarity RADIO EQUIPMENT VARIATIONS |
| title | Transient composite electric field disturbances near dip equator associated with auroral substorms |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-26T20%3A38%3A02IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Transient%20composite%20electric%20field%20disturbances%20near%20dip%20equator%20associated%20with%20auroral%20substorms&rft.jtitle=Geophysical%20research%20letters&rft.au=Sastri,%20J.%20Hanumath&rft.date=1992-07-24&rft.volume=19&rft.issue=14&rft.spage=1451&rft.epage=1454&rft.pages=1451-1454&rft.issn=0094-8276&rft.eissn=1944-8007&rft.coden=GPRLAJ&rft_id=info:doi/10.1029/92GL01447&rft_dat=%3Cproquest_osti_%3E1642292415%3C/proquest_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1524409132&rft_id=info:pmid/&rfr_iscdi=true |