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Taina Chernogo Polyarnogo siyaniya
<< Vchera 1.01.2002 Zavtra >>
Taina Chernogo Polyarnogo siyaniya
Avtory i prava: Jan Curtis
Poyasnenie: Chto vyzyvaet chernye polyarnye siyaniya ? Vidimye kak temnye breshi v obychnyh svetlyh polyarnyh siyaniyah, ih chasto zamechali, no redko zadumyvalis' nad ih prirodoi. Nedavnee issledovaniya s ispol'zovaniem dannyh, poluchennyh gruppoi iz 4-h sputnikov, vrashayushihsya vokrug Zemli, pokazali, chto, po-vidimomu, chernye polyarnye siyaniya na samom dele vyzvany prichinami, protivopolozhnymi tem, kotorye vyzyvayut obychnye polyarnye siyaniya. V obychnyh polyarnyh siyaniyah, elektrony i/ili v osnovnom otricatel'no zaryazhennye chasticy padayut v napravlenii k Zemle vdol' poverhnostei postoyannogo magnitnogo polya. Pri stolknovenii, oni ioniziruyut Zemnuyu atmosferu, vyzyvaya yarkoe zarevo. V to vremya kak, v chernyh anti-siyaniyah, otricatel'no zaryazhennye chasticy pokidayut zemnuyu ionosferu vdol' smykayushihsya silovyh linii magnitnogo polya. Eti temnye anti-siyaniya mogut imet' razmery prevyshayushie 20,000 kilometrov i dlit'sya neskol'ko minut. Na foto, chernoe anti-siyanie razdelyaet yarkoe polyarnoe siyanie nad Fairbanks, Alyaska, SShA.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

English text
Po materialam Astronomy Picture Of the Day
Publikacii s klyuchevymi slovami: chernoe polyarnoe siyanie - polyarnoe siyanie - aurora - black aurora
Publikacii so slovami: chernoe polyarnoe siyanie - polyarnoe siyanie - aurora - black aurora
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