Effect of hyaloclastite breccia boulders on meso-scale
periglacial-aeolian landsystem in semi-arid Antarctic
environment, James Ross Island, Antarctic Peninsula

J 2020

Effect of hyaloclastite breccia boulders on meso-scale periglacial-aeolian landsystem in semi-arid Antarctic environment, James Ross Island, Antarctic Peninsula

KŇAŽKOVÁ, Michaela; Filip HRBÁČEK; Jan KAVAN a Daniel NÝVLT

Základní údaje

Originální název

Effect of hyaloclastite breccia boulders on meso-scale periglacial-aeolian landsystem in semi-arid Antarctic environment, James Ross Island, Antarctic Peninsula

Autoři

KŇAŽKOVÁ, Michaela; Filip HRBÁČEK; Jan KAVAN a Daniel NÝVLT

Vydání

Cuadernos de Investigación Geográfica, Universidad de la Rioja, 2020, 0211-6820

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10508 Physical geography

Stát vydavatele

Španělsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Full Text

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/20:00115104

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

ground sorting; periglacial environment; Antarctica; wind accumulation; snowmelt

Štítky

14315030, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 30. 3. 2021 13:37, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

ABSTRACT. In this study we aim to describe the processes leading to the creation of a specific periglacial and aeolian landsystem, which evolves around the hyaloclastite breccia boulders on James Ross Island, north-eastern Antarctic Peninsula. These boulders were deposited as a result of the Late Holocene advance of Whisky Glacier, forming a well-developed boulder train approximately 5-km long, stretching from Whisky Glacier moraine to Brandy Bay. The combination of ground temperature monitoring, snow cover measurements, grain size analysis and field survey were used to quantify and understand the interplay of periglacial and aeolian processes leading to the formation of the specific meso-scale landsystem around the boulders. The ground temperature probes were installed during January 2017 in the vicinity of two selected boulders. The two study sites, at Monolith Lake (large boulder) and Keller Stream (smaller boulder), were also fitted with snow stakes and trail cameras. An automatic weather station (AWS) on the Abernethy Flats, located approximately two kilometres to the north-west, was used as a reference site for ground temperature and snow cover thickness. The hyaloclastite breccia boulders act as obstacles to wind and trap wind-blown snow, resulting in the formation of snow accumulations on their windward and lee sides. These accumulations affect ground thermal regime and lead to the transport of fine particles by meltwater from the snow during the summer season. The snow cover also traps wind-blown fine sand resulting in the formation of fine-grained rims on the windward and lee sides of the boulders after the snow has melted. Furthermore, the meltwater affects ground moisture content, creating favourable, but spatially limited conditions for colonisation by mosses and lichens.

Návaznosti

EF16_013/0001708, projekt VaV

Název: ECOPOLARIS - Změny ve struktuře a funkci součástí terestrických polárních ekosystémů (CzechPolar2)

LM2015078, projekt VaV

Název: Česká polární výzkumná infrastruktura (Akronym: CzechPolar2)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Czech Polar Research Infrastructure

MUNI/A/1251/2017, interní kód MU

Název: Integrovaný výzkum environmentálních změn v krajinné sféře Země III

Investor: Masarykova univerzita, Integrovaný výzkum environmentálních změn v krajinné sféře Země III, DO R. 2020_Kategorie A - Specifický výzkum - Studentské výzkumné projekty

Citovat

KŇAŽKOVÁ, Michaela; Filip HRBÁČEK; Jan KAVAN a Daniel NÝVLT. Effect of hyaloclastite breccia boulders on meso-scale periglacial-aeolian landsystem in semi-arid Antarctic environment, James Ross Island, Antarctic Peninsula. Cuadernos de Investigación Geográfica. Universidad de la Rioja, 2020, roč. 46, č. 1, s. 7-31. ISSN 0211-6820. Dostupné z: https://doi.org/10.18172/cig.3800.

@article{1558039,
   author = {Kňažková, Michaela and Hrbáček, Filip and Kavan, Jan and Nývlt, Daniel},
   article_number = {1},
   doi = {https://doi.org/10.18172/cig.3800},
   keywords = {ground sorting; periglacial environment; Antarctica; wind accumulation; snowmelt},
   language = {eng},
   issn = {0211-6820},
   journal = {Cuadernos de Investigación Geográfica},
   title = {Effect of hyaloclastite breccia boulders on meso-scale periglacial-aeolian landsystem in semi-arid Antarctic environment, James Ross Island, Antarctic Peninsula},
   url = {https://publicaciones.unirioja.es/ojs/index.php/cig/article/view/3800/3485},
   volume = {46},
   year = {2020}
}

TY  - JOUR
ID  - 1558039
AU  - Kňažková, Michaela - Hrbáček, Filip - Kavan, Jan - Nývlt, Daniel
PY  - 2020
TI  - Effect of hyaloclastite breccia boulders on meso-scale periglacial-aeolian landsystem in semi-arid Antarctic environment, James Ross Island, Antarctic Peninsula
JF  - Cuadernos de Investigación Geográfica
VL  - 46
IS  - 1
SP  - 7-31
EP  - 7-31
PB  - Universidad de la Rioja
SN  - 02116820
KW  - ground sorting
KW  - periglacial environment
KW  - Antarctica
KW  - wind accumulation
KW  - snowmelt
UR  - https://publicaciones.unirioja.es/ojs/index.php/cig/article/view/3800/3485
L2  - https://publicaciones.unirioja.es/ojs/index.php/cig/article/view/3800/3485
N2  - ABSTRACT. In this study we aim to describe the processes leading to the creation of a specific periglacial and aeolian landsystem, which evolves around the hyaloclastite breccia boulders on James Ross Island, north-eastern Antarctic Peninsula. These boulders were deposited as a result of the Late Holocene advance of Whisky Glacier, forming a well-developed boulder train approximately 5-km long, stretching from Whisky Glacier moraine to Brandy Bay. The combination of ground temperature monitoring, snow cover measurements, grain size analysis and field survey were used to quantify and understand the interplay of periglacial and aeolian processes leading to the formation of the specific meso-scale landsystem around the boulders. The ground temperature probes were installed during January 2017 in the vicinity of two selected boulders. The two study sites, at Monolith Lake (large boulder) and Keller Stream (smaller boulder), were also fitted with snow stakes and trail cameras. An automatic weather station (AWS) on the Abernethy Flats, located approximately two kilometres to the north-west, was used as a reference site for ground temperature and snow cover thickness. The hyaloclastite breccia boulders act as obstacles to wind and trap wind-blown snow, resulting in the formation of snow accumulations on their windward and lee sides. These accumulations affect ground thermal regime and lead to the transport of fine particles by meltwater from the snow during the summer season. The snow cover also traps wind-blown fine sand resulting in the formation of fine-grained rims on the windward and lee sides of the boulders after the snow has melted. Furthermore, the meltwater affects ground moisture content, creating favourable, but spatially limited conditions for colonisation by mosses and lichens.
ER  -

KŇAŽKOVÁ, Michaela; Filip HRBÁČEK; Jan KAVAN a Daniel NÝVLT. Effect of hyaloclastite breccia boulders on meso-scale periglacial-aeolian landsystem in semi-arid Antarctic environment, James Ross Island, Antarctic Peninsula. \textit{Cuadernos de Investigación Geográfica}. Universidad de la Rioja, 2020, roč.~46, č.~1, s.~7-31. ISSN~0211-6820. Dostupné z: https://doi.org/10.18172/cig.3800.

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