标 题: PHOTO OF THE DAY (Febuary,7,2004)
发信站: BBS 听涛站 (Sat Feb 7 16:45:58 2004)
WHERE: Dry Valleys region, Antarctica
WHEN: 1997
PHOTOGRAPHER: Maria Stenzel
Because air temperatures are below freezing in this Antarctic desert, glacial
melting is largely due to dust and rocks blown onto the ice. The particles ab
sorb heat from the sun and melt into the glacial surface, creating a pool.
Melt pools, like this one, may join and create a channel whose flow deposits r
ocks and dust elsewhere, facilitating more melting.
(Photograph shot on assignment for, but not published in, "Timeless Valleys of
the Antarctic Desert," October 1998, National Geographic magazine)
※ 修改:·rennina 于 Feb 8 23:28:37 修改本文·[FROM: 61.149.76.28]
※ 来源:·BBS 听涛站 http://tingtao.net·[FROM: 202.108.207.179]
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