Insulation effects of Icelandic dust and volcanic ash on snow and ice

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F16%3A71198" target="_blank" >RIV/60460709:41330/16:71198 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s12517-015-2224-6" target="_blank" >http://dx.doi.org/10.1007/s12517-015-2224-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s12517-015-2224-6" target="_blank" >10.1007/s12517-015-2224-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Insulation effects of Icelandic dust and volcanic ash on snow and ice

Popis výsledku v původním jazyce

In the Arctic region, Iceland is an important source of dust due to ash production from volcanic eruptions. In addition, dust is resuspended from the surface into the atmosphere as several dust storms occur each year. During volcanic eruptions and dust storms, material is deposited on the glaciers where it influences their energy balance. The effects of deposited volcanic ash on ice and snow melt were examined using laboratory and outdoor experiments. These experiments were made during the snow melt period using two different ash grain sizes from the Eyjafjallajokull 2010 eruption, collected on the glacier. Different amounts of ash were deposited on snow or ice, after which the snow properties and melt were measured. The results show that a thin ash layer increases the snow and ice melt but an ash layer exceeding a certain critical thickness caused insulation. Ash with 1 in grain size insulated the ice below at a thickness of 9 to 15 mm. For the 3,5 grain size, the insulation thickness is 13 mm.

Název v anglickém jazyce

Insulation effects of Icelandic dust and volcanic ash on snow and ice

Popis výsledku anglicky

In the Arctic region, Iceland is an important source of dust due to ash production from volcanic eruptions. In addition, dust is resuspended from the surface into the atmosphere as several dust storms occur each year. During volcanic eruptions and dust storms, material is deposited on the glaciers where it influences their energy balance. The effects of deposited volcanic ash on ice and snow melt were examined using laboratory and outdoor experiments. These experiments were made during the snow melt period using two different ash grain sizes from the Eyjafjallajokull 2010 eruption, collected on the glacier. Different amounts of ash were deposited on snow or ice, after which the snow properties and melt were measured. The results show that a thin ash layer increases the snow and ice melt but an ash layer exceeding a certain critical thickness caused insulation. Ash with 1 in grain size insulated the ice below at a thickness of 9 to 15 mm. For the 3,5 grain size, the insulation thickness is 13 mm.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DI - Znečištění a kontrola vzduchu

OECD FORD obor

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Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Arabian Journal of Geosciences

ISSN

1866-7511

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

10

Strana od-do

1-10

Kód UT WoS článku

000371380500044

EID výsledku v databázi Scopus

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