Environmental record of layers of bubbles in natural pond ice
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10381774" target="_blank" >RIV/00216208:11310/18:10381774 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/67985831:_____/18:00501241
Výsledek na webu
<a href="https://doi.org/10.1017/jog.2018.73" target="_blank" >https://doi.org/10.1017/jog.2018.73</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/jog.2018.73" target="_blank" >10.1017/jog.2018.73</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Environmental record of layers of bubbles in natural pond ice
Popis výsledku v původním jazyce
Autonomous temperature data loggers were used to measure the temperature profile within a growing ice cover and in the water below. The ice formed under natural conditions over the pond. We observed the presence of distinct layers of gas bubbles throughout the ice thickness. Temperature measurements allowed us to determine growth rates (μm s-1) and cooling rates (°C s-1) of the ice and demonstrated that these bubble layers formed during the peak ice growth rates from 0.58 to 0.92 μm s-1. The growth rates, leading to the formation of layers of bubbles, were more than an order of magnitude lower than for bubbles produced in controlled laboratory conditions (from 3 to 80 μm s-1). This observation introduces the possibility that solid impurities play a role in natural waters and that they must lower the limit of growth rates required for bubble occurrence. Data revealed a decrease in ice growth rates while cooling rates increased. We interpret this observation as an effect of the heat flux from the water to the ice (8.34-34.11 W m-2), and of gas concentration changes in the water below. Calculations of the ice thickness using traditional methods showed the necessity to include the heat flux from the water to the ice and the effect of gas bubbles within the ice and near the ice-water interface.
Název v anglickém jazyce
Environmental record of layers of bubbles in natural pond ice
Popis výsledku anglicky
Autonomous temperature data loggers were used to measure the temperature profile within a growing ice cover and in the water below. The ice formed under natural conditions over the pond. We observed the presence of distinct layers of gas bubbles throughout the ice thickness. Temperature measurements allowed us to determine growth rates (μm s-1) and cooling rates (°C s-1) of the ice and demonstrated that these bubble layers formed during the peak ice growth rates from 0.58 to 0.92 μm s-1. The growth rates, leading to the formation of layers of bubbles, were more than an order of magnitude lower than for bubbles produced in controlled laboratory conditions (from 3 to 80 μm s-1). This observation introduces the possibility that solid impurities play a role in natural waters and that they must lower the limit of growth rates required for bubble occurrence. Data revealed a decrease in ice growth rates while cooling rates increased. We interpret this observation as an effect of the heat flux from the water to the ice (8.34-34.11 W m-2), and of gas concentration changes in the water below. Calculations of the ice thickness using traditional methods showed the necessity to include the heat flux from the water to the ice and the effect of gas bubbles within the ice and near the ice-water interface.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10505 - Geology
Návaznosti výsledku
Projekt
<a href="/cs/project/GA17-05935S" target="_blank" >GA17-05935S: Vliv změn environmentální chemie na jezerní ekosystémy na počátku mladšího dryasu</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2018
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Glaciology
ISSN
0022-1430
e-ISSN
—
Svazek periodika
64
Číslo periodika v rámci svazku
248
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
26
Strana od-do
866-876
Kód UT WoS článku
000454427700002
EID výsledku v databázi Scopus
2-s2.0-85054986051