2020
High Latitude Dust Deposition in Snow on the Glaciers of James Ross Island, Antarctica
KAVAN, Jan; Daniel NÝVLT; Kamil LÁSKA; Zbyněk ENGEL; Michaela KŇAŽKOVÁ et al.Základní údaje
Originální název
High Latitude Dust Deposition in Snow on the Glaciers of James Ross Island, Antarctica
Autoři
Vydání
Earth Surface Processes and Landforms, Hoboken, Wiley, 2020, 0197-9337
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10508 Physical geography
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.133
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/20:00114061
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
glaciers; high-latitude dust deposition; snow pit; James Ross Island; Antarctic Peninsula; long-range transport
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 19. 10. 2020 15:54, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
High-latitude dust (HLD) depositions on four glaciers of James Ross Island (the Ulu Peninsula) were analysed. The deposition rate on the selected glaciers varies from 11.8 to 64.0 g m(-2), which is one order of magnitude higher compared to the glaciers in Antarctica or elsewhere in the world. A strong negative relationship between the sediment amount and altitude of a sampling site was found. This is most likely caused by the higher availability of aeolian material in the atmospheric boundary layer. General southerly and south-westerly wind directions over the Ulu Peninsula - with exceptions based on local terrain configuration - help to explain the significantly lower level of sediment deposition on San Jose Glacier and the high level on Triangular Glacier. X-ray fluorescence (XRF) spectrophotometry was used to estimate the relative proportions of the main and trace (lithophile) elements in the sediment samples. Both the sediment amount and the XRF results are analysed in a depth profile at each locality and compared among the glaciers, suggesting long-range transport of fine mineral material from outside James Ross Island. The distribution of aeolian sediment among the glaciers corresponds well with the prevailing wind direction on the Ulu Peninsula.
Návaznosti
| EF16_013/0001708, projekt VaV |
| ||
| GA20-20240S, projekt VaV |
| ||
| GC16-14122J, projekt VaV |
| ||
| LM2015078, projekt VaV |
| ||
| MUNI/A/1576/2018, interní kód MU |
|