J 2016

Active layer thermal regime in two climatically contrasted sites of the Antarctic Peninsula region

HRBÁČEK, Filip, Marc OLIVA, Kamil LÁSKA, Jesús RUIZ-FERNÁNDEZ, Miguel Ángel De PABLO et. al.

Basic information

Original name

Active layer thermal regime in two climatically contrasted sites of the Antarctic Peninsula region

Authors

HRBÁČEK, Filip (203 Czech Republic, belonging to the institution), Marc OLIVA (724 Spain), Kamil LÁSKA (203 Czech Republic), Jesús RUIZ-FERNÁNDEZ (724 Spain), Miguel Ángel De PABLO (724 Spain), Gonçalo VIEIRA (620 Portugal), Miguel RAMOS (724 Spain) and Daniel NÝVLT (203 Czech Republic, belonging to the institution)

Edition

Cuadernos de Investigación Geográfica, Universidad de La Rioja, 2016, 0211-6820

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10508 Physical geography

Country of publisher

Spain

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

RIV identification code

RIV/00216224:14310/16:00089826

Organization unit

Faculty of Science

DOI

UT WoS

000384226300009

Keywords in English

Antarctic Peninsula; James Ross Island; Livingston Island; active layer; air and ground temperatures

Tags

Změněno: 1/11/2019 13:11, Mgr. Michal Petr

Abstract

V originále

Permafrost controls geomorphic processes in ice-free areas of the Antarctic Peninsula (AP) region. Future climate trends will promote significant changes of the active layer regime and permafrost distribution, and therefore a better characterization of present-day state is needed. With this purpose, this research focuses on Ulu Peninsula (James Ross Island) and Byers Peninsula (Livingston Island), located in the area of continuous and discontinuous permafrost in the eastern and western sides of the AP, respectively. Air and ground temperatures in as low as 80 cm below surface of the ground were monitored between January and December 2014. There is a high correlation between air temperatures on both sites (r=0.74). The mean annual temperature in Ulu Peninsula was -7.9°C, while in Byers Peninsula was -2.6°C. The lower air temperatures in Ulu Peninsula are also reflected in ground temperatures, which were between 4.9 (5 cm) and 5.9°C (75/80 cm) lower. The maximum active layer thickness observed during the study period was 52 cm in Ulu Peninsula and 85 cm in Byers Peninsula. Besides climate, soil characteristics, topography and snow cover are the main factors controlling the ground thermal regime in both areas.

Links

LM2015078, research and development project
Name: Česká polární výzkumná infrastruktura (Acronym: CzechPolar2)
Investor: Ministry of Education, Youth and Sports of the CR
MUNI/A/1315/2015, interní kód MU
Name: Integrovaný výzkum environmentálních změn v krajinné sféře Země
Investor: Masaryk University, Category A