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.
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Yanvar' Fevral' Mart Aprel' Mai Iyun' Iyul' Avgust Sentyabr' Oktyabr' Noyabr' Dekabr' |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Publikacii s klyuchevymi slovami:
chernoe polyarnoe siyanie - polyarnoe siyanie - aurora - black aurora
Publikacii so slovami: chernoe polyarnoe siyanie - polyarnoe siyanie - aurora - black aurora | |
Sm. takzhe:
Vse publikacii na tu zhe temu >> | |
