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Data · dataset · 2016

Glacial geomorphology of the terrestrial margins of the tidewater glacier, Nordenskiöldbreen, Svalbard

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A 1:4000 scale map of the terrestrial margins of the foreland of Nordenskiöldbreen depicts a polythermal glacial landsystem containing a record of the landform signatures of individual ice flow units that operate within the glacier snout.

Description

A 1:700 map provides a detailed overview of fluted terrain, based on unmanned aerial vehicle images captured in 2014. The pattern of landforms lying inside the Little Ice Age (LIA) latero-frontal moraine on the northern side of the fjord comprises a fluted till surface, which in turn grades into ice-moulded bedrock.

This signature records the recession of a single, wide ice flow unit, which was characterised by limited incorporation of subglacial material and restricted delivery of supraglacial debris. Inside the latero-frontal moraine on the south side of the fjord, a fluted surface is subordinate to a pronounced and large ice-cored moraine complex related to the confluence of five narrower ice flow units, each of which transported significant quantities of englacial and supraglacial debris at their suture zones as a series of longitudinal debris stripes.

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The suite of foreland landforms is diagnostic of both temperate subglacial and frozen-snout conditions, indicating the operation of a warm polythermal glacier fed by multiple flow units during the LIA.

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Image 65% · Longitudinal study 65%

Related

Provenance · 1 source records, 16 field assertions
SourceKeyLast seenRaw
DataCite10.6084/m9.figshare.347540913 d agoJSON v1
FieldAssertionExtractorEvidence
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concepts[field].fos:earth-and-related-environmental-sciencessource · DataCiteconnector:datacite@1.0.0
concepts[field].fos:physical-sciencessource · DataCiteconnector:datacite@1.0.0
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concepts[field].local:field:medicine-healthmapping · DataCitevocabulary-mapper@1.0.0keywords['Medicine']
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concepts[modality].local:modality:imageenrichment · DataCitekeyword-concept-rules@1.0.0title+description (65%)
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