Active Layer Warming and Thickening on CALM-S JGM, James Ross Island, in the Period 2013/14-2022/23

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00141871" target="_blank" >RIV/00216224:14310/25:00141871 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1002/ppp.2274" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/ppp.2274</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ppp.2274" target="_blank" >10.1002/ppp.2274</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Active Layer Warming and Thickening on CALM-S JGM, James Ross Island, in the Period 2013/14-2022/23

Popis výsledku v původním jazyce

The Circumpolar Active Layer Monitoring-South (CALM-S) site was established near the Johann Gregor Mendel (JGM) research station on James Ross Island in February 2014. The CALM-S JGM grid, measuring 80 x 70 m, encompasses two distinct lithological units: a Holocene marine terrace (covering approximately 75% of the grid) and Cretaceous sediments of the Whisky Bay Formation (covering the remaining 25%). Within each lithology, a monitoring profile was established to track the active layer thermal regime and thickness. Additionally, active layer thaw depth probing has been conducted annually around mid-February. Since 2017, the dataset has been further supplemented by surficial soil water content measurements. During the study period (2013/14-2022/23), air temperature increased at a rate of 0.2°C per year. Consequently, the active layer thickness, defined by the 0°C isotherm, increased by an average of 1.5 cm per year, while mechanically probed thaw depths showed an annual increase of 1.9 cm. This study confirms that local lithology strongly influences active layer thermal regime. On average, the active layer thickness was 24 cm greater on AWS-CALM (Cretaceous sediments) than on AWS-JGM (marine terrace). The thaw depth was 28 cm greater in the Cretaceous sediment part of CALM-S compared with the marine terrace part. A strong correlation (r = 0.82 to r = 0.91) was found between active layer thickness and thaw depth with thawing degree days of air and near-surface ground temperature in both lithologies.

Název v anglickém jazyce

Active Layer Warming and Thickening on CALM-S JGM, James Ross Island, in the Period 2013/14-2022/23

Popis výsledku anglicky

The Circumpolar Active Layer Monitoring-South (CALM-S) site was established near the Johann Gregor Mendel (JGM) research station on James Ross Island in February 2014. The CALM-S JGM grid, measuring 80 x 70 m, encompasses two distinct lithological units: a Holocene marine terrace (covering approximately 75% of the grid) and Cretaceous sediments of the Whisky Bay Formation (covering the remaining 25%). Within each lithology, a monitoring profile was established to track the active layer thermal regime and thickness. Additionally, active layer thaw depth probing has been conducted annually around mid-February. Since 2017, the dataset has been further supplemented by surficial soil water content measurements. During the study period (2013/14-2022/23), air temperature increased at a rate of 0.2°C per year. Consequently, the active layer thickness, defined by the 0°C isotherm, increased by an average of 1.5 cm per year, while mechanically probed thaw depths showed an annual increase of 1.9 cm. This study confirms that local lithology strongly influences active layer thermal regime. On average, the active layer thickness was 24 cm greater on AWS-CALM (Cretaceous sediments) than on AWS-JGM (marine terrace). The thaw depth was 28 cm greater in the Cretaceous sediment part of CALM-S compared with the marine terrace part. A strong correlation (r = 0.82 to r = 0.91) was found between active layer thickness and thaw depth with thawing degree days of air and near-surface ground temperature in both lithologies.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10508 - Physical geography

Projekt

<a href="/cs/project/GM22-28659M" target="_blank" >GM22-28659M: Vliv změny klimatu na dynamiku periglaciálního prostředí v oblasti Antarktického poloostrova</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Permafrost and Periglacial Processes

ISSN

1045-6740

e-ISSN

1099-1530

Svazek periodika

36

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

378-389

Kód UT WoS článku

001454054500001

EID výsledku v databázi Scopus

2-s2.0-105001137213