Astronomy Picture of the Day
Astronomy Picture of the Day
Discover the cosmos! [1] Each day a different image or photograph of our
fascinating universe is featured, along with a brief explanation written by a
professional astronomer.
2018 December 18
[2]
Methane Bubbles Frozen in Lake Baikal
Image Credit & Copyright: Kristina Makeeva [3]
Explanation: What are these bubbles frozen into Lake Baikal? Methane [4] .
Lake Baikal, a UNESCO [5] World Heritage Site [6] in Russia [7] , is the
world's largest (by volume), oldest, and deepest lake, containing over 20% of
the world's fresh water. The lake is also a vast storehouse of methane, a
greenhouse gas [8] that, if released, could potentially increase the amount
of infrared light absorbed by Earth's atmosphere [9] , and so increase the
average temperature of the entire planet. Fortunately, the amount of methane
[10] currently bubbling out [11] is not climatologically important. It is not
clear what would happen [12] , though, were temperatures to significantly
increase in the region [13] , or if the water level in Lake Baikal [14] were
to drop. Pictured [15] , bubbles of rising methane froze [16] during winter
into the exceptionally clear ice [17] covering the lake [18] .
Tomorrow's picture: sky searchers
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Authors & editors: Robert Nemiroff [30] (MTU [31] ) & Jerry Bonnell [32]
(UMCP [33] )
NASA Official: Phillip Newman Specific rights apply [34] .
NASA Web Privacy Policy and Important Notices [35]
A service of: ASD [36] at NASA [37] / GSFC [38]
& Michigan Tech. U. [39]
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Site notes:
[1] archivepix.html
[2] image/1812/BaikalBubbles_Makeeva_1000.jpg
[3] https://www.flickr.com/photos/23502952@N03/
[4] https://en.wikipedia.org/wiki/Methane
[5] https://en.wikipedia.org/wiki/UNESCO
[6] https://en.wikipedia.org/wiki/World_Heritage_...
[7] https://en.wikipedia.org/wiki/Russia
[8] https://en.wikipedia.org/wiki/Greenhouse_effe...
[9] https://spaceplace.nasa.gov/atmosphere/en/
[10]
https://www.researchgate.net/publication/
236143909_Sources_and_sinks_of_methane_in_Lake_Baikal_A_synthesis_of_
measurements_and_modeling
[11]
https://climate.nasa.gov/news/2785/
unexpected-future-boost-of-methane-possible-from-arctic-permafrost/
[12] http://arctic-news.blogspot.com/2016/12/lake-...
[13]
https://www.cnbc.com/2017/07/30/
siberian-craters-big-releases-of-methane-could-pose-broad-problems.html
[14] https://en.wikipedia.org/wiki/Lake_Baikal
[15]
https://petapixel.com/2017/01/17/
photographing-frozen-baikal-deepest-oldest-lake-earth/
[16]
http://www.lakescientist.com/frozen-methane-g...
[17] https://youtu.be/r_izDyWAid4
[18]
http://siberiantimes.com/ecology/casestudy/fe...
f0278-gone-endemic-baikal-sponge-has-died-completely-in-several-areas-of-the-
vast-lake/
[19] ap181217.html
[20] archivepix.html
[21] lib/apsubmit2015.html
[22] lib/aptree.html
[23] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apo...
[24] calendar/allyears.html
[25] /apod.rss
[26] lib/edlinks.html
[27] lib/about_apod.html
[28] http://asterisk.apod.com/discuss_apod.php?dat...
[29] ap181219.html
[30] http://www.phy.mtu.edu/faculty/Nemiroff.html
[31] http://www.phy.mtu.edu/
[32] https://antwrp.gsfc.nasa.gov/htmltest/jbonnel...
[33] http://www.astro.umd.edu/
[34] lib/about_apod.html#srapply
[35] https://www.nasa.gov/about/highlights/HP_Priv...
[36] https://astrophysics.gsfc.nasa.gov/
[37] https://www.nasa.gov/
[38] https://www.nasa.gov/centers/goddard/
[39] http://www.mtu.edu/
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