Detailed Information on Publication Record
2017
Seasonal hydrological and suspended sediment transport dynamics in proglacial streams, James Ross Island, Antarctica
KAVAN, Jan, Jakub ONDRUCH, Daniel NÝVLT, Filip HRBÁČEK, Jonathan Lee CARRIVICK et. al.Basic information
Original name
Seasonal hydrological and suspended sediment transport dynamics in proglacial streams, James Ross Island, Antarctica
Name in Czech
Sezónní dynamika transportu vody a suspendovaných sedimentů v proglaciálních tocích, ostrov Jamese Rosse, Antarktida
Authors
KAVAN, Jan (203 Czech Republic, guarantor, belonging to the institution), Jakub ONDRUCH (203 Czech Republic, belonging to the institution), Daniel NÝVLT (203 Czech Republic, belonging to the institution), Filip HRBÁČEK (203 Czech Republic, belonging to the institution), Jonathan Lee CARRIVICK (826 United Kingdom of Great Britain and Northern Ireland) and Kamil LÁSKA (203 Czech Republic, belonging to the institution)
Edition
Geografiska Annaler: Series A, Physical Geography, Hoboken, NJ USA, Wiley, 2017, 0435-3676
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10508 Physical geography
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 1.616
RIV identification code
RIV/00216224:14310/17:00095915
Organization unit
Faculty of Science
UT WoS
000395104100004
Keywords (in Czech)
ostrov Jamese Rosse; Antarktický poloostrov; hydrologie; proglaciál; suspenovaná hmota; hydrometeorologie; RFA
Keywords in English
James Ross Island; Antarctic Peninsula; hydrology; proglacial; suspended sediment; sediment sources; hydrometeorology; XRF
Tags
International impact, Reviewed
Změněno: 11/4/2018 21:17, Ing. Nicole Zrilić
Abstract
V originále
Rapid warming of the Antarctic Peninsula is producing accelerated glacier mass loss and can be expected to have significant impacts on meltwater runoff regimes and proglacial fluvial activity. This study presents analysis of the hydrology and suspended sediment dynamics of two proglacial streams on James Ross Island, Antarctic Peninsula. Mean water discharge during 8/1/2015 to 18/2/2015 reached 0.19 m3 s-1 and 0.06 m3 s-1 for Bohemian Stream and Algal Stream, respectively, equivalent to specific runoff of 76 mm month-1 and 60 mm month-1. The daily discharge regime strongly correlated with air and ground temperatures. The effect of global radiation on proglacial water discharge was found low to negligible. Suspended sediment concentrations of Bohemian Stream were very high (up to 2927 mg L-1) due to aeolian supply and due to the high erodibility of local rocks. Total sediment yield (186 t km-2 yr-1) was high for (nearly) deglaciated catchments, but relatively low in comparison with streams draining more glaciated alpine and arctic catchments. The sediment provenance was mostly local Cretaceous marine and aeolian sediments; volcanic rocks are not an important source for suspended load. High Rb/Sr ratios for some samples suggested chemical weathering. Overall, this monitoring of proglacial hydrological and suspended sediment dynamics contributes to the dearth of such data fromAntarctic environments and offers an insight to the nature of the proglacial fluvial activity, which is likely to be in a transient state with ongoing climate change.
Links
| LM2010009, research and development project |
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| LM2015078, research and development project |
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| MUNI/A/1315/2015, interní kód MU |
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