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The difference of sediment sources between high flows and low flows in the Hailuogou Glacier stream

AuthorsChen, Jiacun; Lizaga Villuendas, Iván ; Zhang, Xinbao; Navas Izquierdo, Ana
Issue DateMay-2020
PublisherEuropean Geosciences Union
CitationEGU General Assembly. EGU2020-13337 (Online. 4-8 May 2020)
AbstractDuring a 2 weeks field campaign in May 2016 in the frame of IAEA INT5153 project, source sediment samples and channel bed sediment mixtures were collected along the river valley of the Hailuogou Glacier. Three main sources were identified: surface glacier materials, old moraines and recent moraines. Composite surface samples (2 cm) were created of 10 subsamples in each representative site for surface glacier materials. Following the same scheme on old lateral moraines 10 sites were selected from the more mineral blocky deposits to the most vegetated parts at higher altitudes. On recent moraines 12 sites with different stages of vegetation cover were sampled. Starting from the glacier tongue a total of 7 fine sediment mixtures were collected along the river of which 3 composite samples corresponded to the dry season with low flow and 4 samples corresponded to high flow. A new consensus test method and an unmixing model were used to estimate the apportionments of the sediment sources to the sediment loads.
Description2 Pags. © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
Publisher version (URL)https://doi.org/10.5194/egusphere-egu2020-13337
Appears in Collections:(EEAD) Comunicaciones congresos
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