The active layer research on James Ross Island, an overview
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F19%3A10399466" target="_blank" >RIV/00216208:11310/19:10399466 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=bqwB6i9dMq" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=bqwB6i9dMq</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5817/CPR2019-1-3" target="_blank" >10.5817/CPR2019-1-3</a>
Alternative languages
Result language
angličtina
Original language name
The active layer research on James Ross Island, an overview
Original language description
This study summarizes the current state of the active layer and permafrost research on James Ross Island. The analysis of climate parameters covers the reference period 2011-2017. The mean annual air temperature at the AWS-JGM site was -6.9 °C (ranged from -3.9 °C to -8.2 °C). The mean annual ground temperature at the depth of 5 cm was -5.6 °C (ranged from -3.3 °C to -6.7 °C) and it also reached -5.6 °C (ranged from -4.0 to -6.8 °C) at the depth of 50 cm. The mean daily ground temperature at the depth of 5 cm correlated moderately up to strongly with the air temperature depending on the season of the year. Analysis of the snow effect on the ground thermal regime confirmed a low insulating effect of snow cover when snow thickness reached up to 50 cm. A thicker snow accumulation, reaching at least 70 cm, can develop around the hyaloclastite breccia boulders where a well pronounced insulation effect on the near-surface ground thermal regime was observed. The effect of lithology on the ground physical properties and the active layer thickness was also investigated. Laboratory analysis of ground thermal properties showed variation in thermal conductivity (0.3 to 0.9 Wm-1K-1). The thickest active layer (89 cm) was observed on the Berry Hill slopes site, where the lowest thawing degree days index (321 to 382 ° C.day) and the highest value of thermal conductivity (0.9 Wm-1K-1) was observed. The clearest influence of lithological conditions on active layer thickness was observed on the CALM-S grid. The site comprises a sandy Holocene marine terrace and muddy sand of the Whisky Bay Formation. Surveying using a manual probe, ground penetrating radar, and an electromagnetic conductivity meter clearly showed the effect of the lithological boundary on local variability of the active layer thickness.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
10508 - Physical geography
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Czech Polar Reports
ISSN
1805-0689
e-ISSN
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Volume of the periodical
9
Issue of the periodical within the volume
1
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
17
Pages from-to
20-36
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-85071233784