Latitudinal and Longitudinal Oscillations of Cloud Features on Neptune
Voyager observations suggest that three of Neptune's major cloud features oscillate in latitude by 2° to 4° and that two of them simultaneously oscillate in longitude by 7.8° and 98° about their mean drift longitudes. The observations define most convincingly the two orthogonal oscillations of...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 1991-11, Vol.254 (5032), p.684-686 |
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| creator | Sromovsky, Lawrence A. |
| description | Voyager observations suggest that three of Neptune's major cloud features oscillate in latitude by 2° to 4° and that two of them simultaneously oscillate in longitude by 7.8° and 98° about their mean drift longitudes. The observations define most convincingly the two orthogonal oscillations of the second dark spot (near 53° south). These oscillations have similar periods near 800 hours and approximately satisfy a simple advective model in which a latitudinal oscillation produces a phase-shifted longitudinal oscillation proportional to the local wind shear. The latitudinal motion of the Great Dark Spot can be fit with an oscillation period of about 2550 hours, whereas its dominant longitudinal motion, if oscillatory at all, has such a long period that it is not well constrained by the Voyager data. |
| doi_str_mv | 10.1126/science.254.5032.684 |
| format | Article |
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The observations define most convincingly the two orthogonal oscillations of the second dark spot (near 53° south). These oscillations have similar periods near 800 hours and approximately satisfy a simple advective model in which a latitudinal oscillation produces a phase-shifted longitudinal oscillation proportional to the local wind shear. The latitudinal motion of the Great Dark Spot can be fit with an oscillation period of about 2550 hours, whereas its dominant longitudinal motion, if oscillatory at all, has such a long period that it is not well constrained by the Voyager data.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.254.5032.684</identifier><identifier>PMID: 17774793</identifier><identifier>CODEN: SCIEAS</identifier><language>eng</language><publisher>Legacy CDMS: American Society for the Advancement of Science</publisher><subject>Atmosphere ; Axes of rotation ; Clouds ; Clouds (Meteorology) ; Empirical modeling ; Lunar And Planetary Exploration ; Neptune ; Neptune (Planet) ; Oscillation ; Phase shift ; Planetary atmospheres ; Planets ; Rotation ; Scooters ; Wind shear</subject><ispartof>Science (American Association for the Advancement of Science), 1991-11, Vol.254 (5032), p.684-686</ispartof><rights>Copyright 1991 American Association for the Advancement of Science</rights><rights>COPYRIGHT 1991 American Association for the Advancement of Science</rights><rights>COPYRIGHT 1991 American Association for the Advancement of Science</rights><rights>Copyright American Association for the Advancement of Science Nov 1, 1991</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c772t-401f134abca5e250a6bf776d0c1fdd6703263092b4f3675b9f23f85c1061cd823</citedby><cites>FETCH-LOGICAL-c772t-401f134abca5e250a6bf776d0c1fdd6703263092b4f3675b9f23f85c1061cd823</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/2879275$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/2879275$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,778,782,801,2873,2874,27911,27912,58004,58237</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17774793$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Sromovsky, Lawrence A.</creatorcontrib><title>Latitudinal and Longitudinal Oscillations of Cloud Features on Neptune</title><title>Science (American Association for the Advancement of Science)</title><addtitle>Science</addtitle><description>Voyager observations suggest that three of Neptune's major cloud features oscillate in latitude by 2° to 4° and that two of them simultaneously oscillate in longitude by 7.8° and 98° about their mean drift longitudes. The observations define most convincingly the two orthogonal oscillations of the second dark spot (near 53° south). These oscillations have similar periods near 800 hours and approximately satisfy a simple advective model in which a latitudinal oscillation produces a phase-shifted longitudinal oscillation proportional to the local wind shear. The latitudinal motion of the Great Dark Spot can be fit with an oscillation period of about 2550 hours, whereas its dominant longitudinal motion, if oscillatory at all, has such a long period that it is not well constrained by the Voyager data.</description><subject>Atmosphere</subject><subject>Axes of rotation</subject><subject>Clouds</subject><subject>Clouds (Meteorology)</subject><subject>Empirical modeling</subject><subject>Lunar And Planetary Exploration</subject><subject>Neptune</subject><subject>Neptune (Planet)</subject><subject>Oscillation</subject><subject>Phase shift</subject><subject>Planetary atmospheres</subject><subject>Planets</subject><subject>Rotation</subject><subject>Scooters</subject><subject>Wind 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(American Association for the Advancement of Science)</jtitle><addtitle>Science</addtitle><date>1991-11-01</date><risdate>1991</risdate><volume>254</volume><issue>5032</issue><spage>684</spage><epage>686</epage><pages>684-686</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><coden>SCIEAS</coden><abstract>Voyager observations suggest that three of Neptune's major cloud features oscillate in latitude by 2° to 4° and that two of them simultaneously oscillate in longitude by 7.8° and 98° about their mean drift longitudes. The observations define most convincingly the two orthogonal oscillations of the second dark spot (near 53° south). These oscillations have similar periods near 800 hours and approximately satisfy a simple advective model in which a latitudinal oscillation produces a phase-shifted longitudinal oscillation proportional to the local wind shear. The latitudinal motion of the Great Dark Spot can be fit with an oscillation period of about 2550 hours, whereas its dominant longitudinal motion, if oscillatory at all, has such a long period that it is not well constrained by the Voyager data.</abstract><cop>Legacy CDMS</cop><pub>American Society for the Advancement of Science</pub><pmid>17774793</pmid><doi>10.1126/science.254.5032.684</doi><tpages>3</tpages></addata></record> |
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| ispartof | Science (American Association for the Advancement of Science), 1991-11, Vol.254 (5032), p.684-686 |
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| language | eng |
| recordid | cdi_proquest_miscellaneous_743282789 |
| source | American Association for the Advancement of Science; Jstor Complete Legacy; NASA Technical Reports Server |
| subjects | Atmosphere Axes of rotation Clouds Clouds (Meteorology) Empirical modeling Lunar And Planetary Exploration Neptune Neptune (Planet) Oscillation Phase shift Planetary atmospheres Planets Rotation Scooters Wind shear |
| title | Latitudinal and Longitudinal Oscillations of Cloud Features on Neptune |
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