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dc.contributor.authorThompson, Sarah S.
dc.contributor.authorKulessa, Bernd
dc.contributor.authorBenn, Douglas I.
dc.contributor.authorMertes, Jordan R.
dc.date.accessioned2018-01-04T16:30:09Z
dc.date.available2018-01-04T16:30:09Z
dc.date.issued2017-04-20
dc.identifier.citationThompson , S S , Kulessa , B , Benn , D I & Mertes , J R 2017 , ' Anatomy of terminal moraine segments and implied lake stability on Ngozumpa Glacier, Nepal, from electrical resistivity tomography (ERT) ' , Scientific Reports , vol. 7 , 46766 . https://doi.org/10.1038/srep46766en
dc.identifier.issn2045-2322
dc.identifier.otherPURE: 251876713
dc.identifier.otherPURE UUID: 14c864ac-c758-4a37-9ad6-54b1609e811f
dc.identifier.otherScopus: 85038836924
dc.identifier.otherWOS: 000425902800001
dc.identifier.otherORCID: /0000-0002-3604-0886/work/64697400
dc.identifier.urihttp://hdl.handle.net/10023/12433
dc.descriptionThis research was supported financially by the European Commission FP7-MC-IEF (PIEF-GA-2012-330805), the University Centre in Svalbard (UNIS), National Geographic Society GRANT #W135-10.en
dc.description.abstractMoraine-dammed lakes at debris-covered glaciers are becoming increasingly common and pose significant outburst flood hazards if the dam is breached. While moraine subsurface structure and internal processes are likely to influence dam stability, only few sites have so far been investigated. We conducted electrical resistivity tomography (ERT) surveys at two sites on the terminal moraine complex of the Ngozumpa Glacier, Nepal, to aid assessment of future terminus stability. The resistivity signature of glacier ice at the site (100-15 kΩ m) is more consistent with values measured from cold glacier ice and while this may be feasible, uncertainties in the data inversion introduce ambiguity to this thermal interpretation. However, the ERT data does provide a significant improvement to our knowledge of the subsurface characteristics at these sites, clearly showing the presence (or absence) of glacier ice. Our interpretation is that of a highly complex latero-terminal moraine, resulting from interaction between previous glacier advance, recession and outburst flooding. If the base-level Spillway Lake continues to expand to a fully formed moraine-dammed glacial lake, the degradation of the ice core could have implications for glacial lake outburst risk.
dc.format.extent12
dc.language.isoeng
dc.relation.ispartofScientific Reportsen
dc.rights© The Author(s) 2017. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/en
dc.subjectGE Environmental Sciencesen
dc.subjectQE Geologyen
dc.subjectNDASen
dc.subject.lccGEen
dc.subject.lccQEen
dc.titleAnatomy of terminal moraine segments and implied lake stability on Ngozumpa Glacier, Nepal, from electrical resistivity tomography (ERT)en
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Geography & Sustainable Developmenten
dc.contributor.institutionUniversity of St Andrews. Bell-Edwards Geographic Data Instituteen
dc.identifier.doihttps://doi.org/10.1038/srep46766
dc.description.statusPeer revieweden


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