Climatic and tectonic significance of Taboche Lake, Khumbu Region, Nepal

A.P. Gajurel, M.S. Hubbard, B. Giri, A.C. Elmore, S. Maka, P.A. Rafter, A.E. Putnam, S. Elvin, A. Tait, P.A. Mayewski

Research output: Contribution to journalArticlepeer-review

Abstract

The Everest region is characterized by its alpine glacial environment. In an effort to understand environmental change and tectonic activity, our team cored Taboche Lake, situated at 4,712 m along the western margin of the Ngozumpa Glacier. This research catalogs past earthquakes using geological records of the lake core that are important for the assessment of future earthquake hazards in the region and provides information for tectonic risk of glacial lake floods. Core grain size characteristics and internal sedimentary structures from computed tomographic scan were coupled with radiocarbon dating of organic matter preserved in the core to reconstruct the environmental history of the area. The 58-cm-long core consists of laminated silty sands and sandy silts with particle diameters
Original languageEnglish (US)
Article number102418
JournaliScience
Volume24
Issue number5
DOIs
StatePublished - May 21 2021

Bibliographical note

Funding Information:
This research was conducted in partnership with National Geographic Society, Rolex, and Tribhuvan University, with approval from all relevant agencies of the Government of Nepal. Funding provided by National Geographic and Rolex Perpetual Planet. We also wish to thank the communities of the Khumbu Region, our climbing support team, and Shangri-La Nepal Trek. We thank the LacCore facility at the University of Minnesota for imaging and other analyses of our cores. Tri-Chandra Multiple Campus of Tribhuvan University, Kathmandu, is thanked for administrative facilities provided to the first author. Mr. Anil Ghimire and Mr. Balkrishna Shrestha from Tri-Chandra M. Campus are highly acknowledged for their gracious support during fieldwork. We also extend our gratitude to Tyler Dinley, Sam Sheline, and Freddie Wilkinson for their help during lake coring. We also acknowledge to the reviewers for their thoughtful additions to the manuscript. Funding: This work was supported by National Geographic Society and Rolex. Conceptualization, A.P.G and M.S.H; methodology, S.M. P.A.R. M.S.H. A.P.G, B.G. and A.T.; investigation, A.P.G. M.S.H. A.E.P. S.E. P.A.M. A.T. and B.G.; formal analysis, P.A.R. S.M. and M.S.H.; Data curation, P.A.R. S.M. A.P.G. B.G. and M.S.H.; writing ? original draft, A.P.G.; writing ? review & editing, A.P.G. M.S.H. P.A.R. A.E.P. A.T. P.A.M. A.C.E. S.E. and B.G.; resources, A.C.E. S.E. The authors declare no conflict of interest.

Funding Information:
Funding: This work was supported by National Geographic Society and Rolex .

Publisher Copyright:
© 2021 The Authors

Keywords

  • Glacial Landscapes
  • Glacial Processes
  • Sedimentology
  • Tectonics

Continental Scientific Drilling Facility tags

  • NGS

PubMed: MeSH publication types

  • Journal Article

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