Ewertowski, M. and Evans, D.J.A. and Roberts, D.H. and Tomczyk, A.M. (2016) 'Glacial geomorphology of the terrestrial margins of the tidewater glacier, Nordenskiöldbreen, Svalbard.', Journal of maps., 12 (sup1). pp. 476-487.
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. 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. 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.
|Full text:||(AM) Accepted Manuscript|
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|Publisher Web site:||http://dx.doi.org/10.1080/17445647.2016.1192329|
|Publisher statement:||This is an Accepted Manuscript of an article published by Taylor & Francis Group in Journal of Maps on 16/06/2016, available online at: http://www.tandfonline.com/[10.1080/17445647.2016.1192329.|
|Date accepted:||04 May 2016|
|Date deposited:||17 June 2016|
|Date of first online publication:||16 June 2016|
|Date first made open access:||17 June 2016|
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