Downstream variability of channel morphology and bed material in the braided Keller River, James Ross Island, Antarctica
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F20%3A00118120" target="_blank" >RIV/00216224:14310/20:00118120 - isvavai.cz</a>
Result on the web
<a href="http://gfdq.glaciologia.it/043_2_01_2020/" target="_blank" >http://gfdq.glaciologia.it/043_2_01_2020/</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4461/GFDQ.2020.43.8" target="_blank" >10.4461/GFDQ.2020.43.8</a>
Alternative languages
Result language
angličtina
Original language name
Downstream variability of channel morphology and bed material in the braided Keller River, James Ross Island, Antarctica
Original language description
Changes in sediment supply and water availability in rivers are associated with ongoing climate change and glacier melting. The processes connected with increasing temperatures largely determine braidplain activity within glacier forefields. This work focuses on downstream changes in channel morphology (i.e., channel width and braiding intensity) and bed material (i.e., petrological types and clast roundness), as well as possible controlling factors (i.e., sediment sources and sediment connectivity). The study area is the Keller River catchment located on the James Ross Island (JRI), Antarctica. This paper describes the 8.6 km-long Keller River in terms of morphology, including river braidplains, sediment sources and connectivity within the catchment. Eight sediment sources and three types were identified: one moraine sediment source, four debris- flow-dominated sediment sources and three fluvial-flow-dominated sediment sources. Along with high sediment connectivity, the occurrence of lateral sediment sources from tributaries significantly impacted downstream changes in channel morphology and processes. Channel width and braiding intensity showed an increasing downstream trend, although the channel width trend was irregular. As for bed material, sediment sources markedly control clast roundness with little effect of petrological properties.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10508 - Physical geography
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geografia Fisica e Dinamica Quaternaria
ISSN
0391-9838
e-ISSN
—
Volume of the periodical
43
Issue of the periodical within the volume
2
Country of publishing house
IT - ITALY
Number of pages
13
Pages from-to
195-207
UT code for WoS article
000645287600001
EID of the result in the Scopus database
2-s2.0-85125707167