CO OZNACZA SŁOWO CRYOCONITE
Kriokonit
Kriokonit to pył rozpryskowy pyłu wykonany z połączenia małych cząstek rocka, sadzy i mikroorganizmów, które osadzają się i gromadzą się na śniegu, lodowcach lub lodowcach. Ciemnienie, zwłaszcza z małych ilości sadzy, pochłania promieniowanie słoneczne topiące śnieg lub lód pod osadem, a czasami tworząc otwór krystalonowy. Kriokonit może zawierać kurz z odległych kontynentalnych pustyń lub terenów rolniczych, cząstek z erupcji wulkanów lub emisji z elektrowni i sadzy. Został po raz pierwszy opisany i nazwany przez Nils A. E. Nordenskiöld podczas podróży na lodowisku Greenland w 1870 roku. Latem otwory krykieta często zawierają ciekłą wodę, a więc stanowią niszę dla zimnowodnych mikroorganizmów, takich jak bakterie i glony. Soot zmniejsza współczynnik odbicia, czyli albedo lodu, zwiększając absorpcję ciepła. Kriokonit jest stale dodawany do formacji śniegu i lodu wraz ze śniegiem. Jest pochowany w śniegu lub lodzie, ale gdy śnieg lub lód topnieją, na powierzchni odsłonięto coraz większe ilości ciemnego materiału, przyspieszając topienie.
Definicja słowa cryoconite w słowniku
Definicja kriokonitu w słowniku to ciemny proszek znaleziony na dnie otworów lodowcowych, wcześniej uważany za kosmiczny, ale obecnie powszechnie uważany za ziemski.
KSIĄŻKI POWIĄZANE ZE SŁOWEM «CRYOCONITE»
Poznaj użycie słowa
cryoconite w następujących pozycjach bibliograficznych Książki powiązane ze słowem
cryoconite oraz krótkie ich fragmenty w celu przedstawienia kontekstu użycia w literaturze.
1
Encyclopedia of Snow, Ice and Glaciers
cryoconite holes. As the cryoconite absorbs solar radiation and promotes melting
of the ice beneath it, the cylindrical holes are formed. Constituents of cryoconite
have been studied mineralogically and biologically. Cryoconite contains mineral
...
Vijay P. Singh, Pratap Singh, Umesh K. Haritashya,
2011
2
Encyclopedia of the Antarctic
This implies that the species within cryoconite holes originate from adjacent
terrestrial sources and suggests that similar survival strategies may be in effect in
both lake ice and cryoconite holes. Besides the dry valleys of Antarctica, no other
...
3
Life at Extremes: Environments, Organisms, and Strategies ...
Other cyanobacterial genera found in cryoconite holes include unicellular
Aphonothece. Chroococcus and Chamaesiphon. and filamentous Oscilloton'a,
Microcoleus, Schizothrix, Anabaeno. Colothrix. Crinalium and Plectonema (
Gerdel and ...
4
The Ecology of Snow and Ice Environments
Cryoconite aggregate can be found beneath this layer. (B) Left -scanning
electron micrograph of bacteria attached to a filamentous cyanobacterium, and
right showing mucus-like exopolysaccharide binding. Images courtesy of N.
Takeuchi.
Johanna Laybourn-Parry, Martyn Tranter, Andrew J. Hodson,
2012
CRYOCONITE HOLES Cryoconite holes occur on glaciers in the Arctic and
Antarctic as well as in alpine environments in the glacial ablation zone. They are
formed when wind-blown particulates lodge on the surface in small depressions
in ...
6
Issues in Earth Sciences, Geology, and Geophysics: 2011 Edition
and. Greenland. “Supraglacial dust (cryoconite) is an important but poorly
understood component of the glacial system. There is a lack of primary data on
cryoconite form, extent and dynamics,” scientists in Sheffield, the United Kingdom
report.
7
Scientists Debate Gaia: The Next Century
Cryoconite microbial mats are known for forming dark humic acid accumulations
that accelerate ice melting (Takeuchi et al., 2001; Margesin et al., 2002). A Life-
Induced Meltdown? The ice of a snowball Earth would thus be biotically thawed ...
Stephen Henry Schneider,
2004
8
The Diatoms: Applications for the Environmental and Earth ...
The lower albedo of the sediment causes the ice to melt more
quicklythanitssurroundings,formingahole.Overtime,wind-
blownsedimentandorganicmatteraccumulatesandenhances the melting process.
Organisms transported into cryoconite ...
John P. Smol, Eugene F. Stoermer,
2010
9
Issues in Ecosystem Ecology: 2013 Edition
University of Sheffield: Structure and diversity of bacterial, eukaryotic and
archaeal communities in glacial cryoconite holes from the Arctic and the Antarctic
By a News Reporter-Staff News Editor at Ecology, Environment & Conservation ...
10
Micrometeorites and the Mysteries of Our Origins
Two of the participants (H.T and M.M) get cold feet and cold fingers collecting
cryoconite with a hose linked to a light plastic pump weighting about one pound (
usually used to empty the heads in pleasure boats) activated on the shore by our
...
WIADOMOŚCI, KTÓRE ZAWIERAJĄ SŁOWO «CRYOCONITE»
Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
cryoconite w wiadomościach.
Microbial diversity throughout ice sheet melt season
Debris-filled holes on the glacier surface, called 'cryoconite holes', are considered 'hot spots' for microbial activity in these environments. «Phys.Org, Kwi 15»
Bristol student among first to study on microbial diversity throughout …
Debris-filled holes on the glacier surface, called 'cryoconite holes', are considered 'hot spots' for microbial activity in these environments. «University of Bristol, Mar 15»
Icy pools are oases for unique glacier ecosystems
The holes occur when windblown dust – cryoconite – settles on the glacier surface. Being darker than the ice, the dust absorbs more heat, ... «New Scientist, Mar 15»
Glacier Melting Sets Free Organic Carbon
According to the article, glacier ecosystems accumulate OC from primary production on the glacier surface, particularly in cryoconite deposits, ... «GlacierHub, Lut 15»
'Chasing Ice' screens in Beaver Creek Wednesday
... Adam LeWinter surveys Birthday Canyon Black deposit in bottom of channel is cryoconite. Birthday Canyon is approximately 150 feet deep. «Vail Daily News, Lut 15»
An Icy Art Installation Clear As Crystal
The holes are meant to resemble cryoconite holes, tiny perforations found on glaciers that are created by wind-blown dust made of rock ... «GlacierHub, Sty 15»
Life Blooms in Tiny Cities at the Surface of Glaciers
You might think glaciers would be hostile to life. But small water-filled holes at the surfaces of glaciers called cryoconite holes contain diverse ... «GlacierHub, Gru 14»
Satellite Images Offer Clues to Causes of Glacial Lake Flooding
It is widely believed that rising temperatures due to climate change and reduced albedo of the ice from cryoconite (also known as carbon dust ... «GlacierHub, Paz 14»
Is a new Fern Gully in the making on a sub-Antarctic island?
Material called cryoconite –windblown dust made of rock, soot and microscopic organisms– has settled on the surface of ice on Signy Island, as ... «GlacierHub, Wrz 14»
'Dark snow' in Greenland caused by forest fires is yet another sign of …
This black material is called cryoconite, and is comprised of dust and soot deposited on the surface, and melted out from the older ice exposed ... «Daily Mail, Wrz 14»