Quaternary paleolake formation and cataclysmic flooding along the upper Yenisei River

Goro Komatsu, Sergei G. Arzhannikov, Alan R. Gillespie, Raymond M. Burke, Hideaki Miyamoto, Victor Baker

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

A suite of geomorphological and sedimentological features in the catchment of the upper Yenisei River in the Sayan mountains of southern Siberia testifies to the occurrence of cataclysmic floods that flowed down the river. Evidence of large-scale high-energy flood events includes: 1) gravel dunes, up to a few meters high and spaced 50 to 80 m apart, in the Kyzyl Basin 2) landforms such as hanging valleys and paleochannels and 3) flood sediments in a tributary valley. The origins of the Yenisei floods were likely diverse due to complex hydrological processes operating in the Sayan mountains. The possibilities include failures of multiple, variably impounded (ice, sedimentary, tectonic scarp, and lava flow dams) paleolakes in the two large intermontane basins of Darkhadyn Khotgor and Todza, and other minor basins, in the upper Yenisei River catchment. Dating techniques applied to the paleolakes in the Darkhadyn Khotgor and Todza basins revealed their formation during various periods in the middle-late Pleistocene and Holocene. Flooding from the Darkhadyn Khotgor appears to explain many of the inferred flood features, although contributions by flooding from other paleolake basins cannot be ruled out. Computer simulation of the flooding caused by a Darkhadyn Khotgor paleolake ice-dam failure indicates a probable peak discharge of ∼ 3.5 × 106 m3 s- 1, approximately one-fifth that of the floods that formed the Channeled Scabland in the U.S.A. Many of the outburst events probably occurred in the late Quaternary, but earlier floods could also have occurred.

Original languageEnglish (US)
Pages (from-to)143-164
Number of pages22
JournalGeomorphology
Volume104
Issue number3-4
DOIs
StatePublished - Mar 15 2009

Fingerprint

flooding
river
basin
catchment
intermontane basin
paleochannel
dam failure
ice
valley
mountain
peak discharge
lava flow
outburst
computer simulation
landform
dune
tributary
gravel
dam
Holocene

Keywords

  • Floods
  • Glacial history
  • Mongolia
  • Paleolakes
  • Quaternary
  • Siberia

ASJC Scopus subject areas

  • Earth-Surface Processes

Cite this

Komatsu, G., Arzhannikov, S. G., Gillespie, A. R., Burke, R. M., Miyamoto, H., & Baker, V. (2009). Quaternary paleolake formation and cataclysmic flooding along the upper Yenisei River. Geomorphology, 104(3-4), 143-164. https://doi.org/10.1016/j.geomorph.2008.08.009

Quaternary paleolake formation and cataclysmic flooding along the upper Yenisei River. / Komatsu, Goro; Arzhannikov, Sergei G.; Gillespie, Alan R.; Burke, Raymond M.; Miyamoto, Hideaki; Baker, Victor.

In: Geomorphology, Vol. 104, No. 3-4, 15.03.2009, p. 143-164.

Research output: Contribution to journalArticle

Komatsu, G, Arzhannikov, SG, Gillespie, AR, Burke, RM, Miyamoto, H & Baker, V 2009, 'Quaternary paleolake formation and cataclysmic flooding along the upper Yenisei River', Geomorphology, vol. 104, no. 3-4, pp. 143-164. https://doi.org/10.1016/j.geomorph.2008.08.009
Komatsu, Goro ; Arzhannikov, Sergei G. ; Gillespie, Alan R. ; Burke, Raymond M. ; Miyamoto, Hideaki ; Baker, Victor. / Quaternary paleolake formation and cataclysmic flooding along the upper Yenisei River. In: Geomorphology. 2009 ; Vol. 104, No. 3-4. pp. 143-164.
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