Structural glaciology of Isunguata Sermia, West Greenland

• Published in: Journal of Maps
• Main Authors: Jones, Christine, Ryan, Jonathan, Holt, Tom, Hubbard, Alun Lloyd
• Format: Article in Journal/Newspaper
• Language: English
• Published: Taylor & Francis Open 2018
• Subjects: VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi; glasiologi: 465; VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology; glaciology: 465; Greenland Ice Sheet; structural glaciology; crevasses; supraglacial hydrology; ice flow; Greenland; Arctic; glacier; Ice Sheet
• Online Access: https://hdl.handle.net/10037/13757; https://doi.org/10.1080/17445647.2018.1507952

This is the peer reviewed version of the following article: Jones, C., Ryan, J., Holt, T. & Hubbard, A.L. (2018). Structural glaciology of Isunguata Sermia, West Greenland. Journal of Maps , 14(2), 517-527. https://doi.org/10.1080/17445647.2018.1507952, which has been published in final form at https://doi.org/10.1080/17445647.2018.1507952 . We present a 1:42,000 scale map of Isunguata Sermia, a land-terminating outlet glacier draining the western-sector of the Greenland Ice Sheet. Structure-from-Motion software applied to ∼3,600 aerial images collected by a fixed-wing unmanned aerial vehicle in July 2015 allowed us to produce a high resolution (0.3 m ground sampling distance (GSD)) orthomosaic and digital elevation model (DEM; 1.5 m GSD).These products were used to map and describe the structural, geomorphological and hydrological features of the lower 16 km terminus of Isunguata Sermia and include many thousands of crevasses, crevasse traces and supraglacial channels. Additionally, several geomorphological features and pro-glacial hydrological features were identified, including debris-covered ice, lateral moraines and ice-marginal lakes. The map has potential for informing and reconstructing the long-term dynamic history of the glacier, including its response to variable environmental forcing.