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Radio-echo sounding and ice volume estimates of western Nordenskiöld Land glaciers, Svalbard

  • A. Martín-Español (a1), E.V. Vasilenko (a2), F.J. Navarro (a1), J. Otero (a1), J.J. Lapazaran (a1), I. Lavrentiev (a3), Y.Y. Macheret (a3) and F. Machío (a4)...

Abstract

As part of ongoing work to obtain a reliable estimate of the total ice volume of Svalbard glaciers and their potential contribution to sea-level rise, we present here volume calculations, with detailed error estimates, for ten glaciers on western Nordenskiöld Land, central Spitsbergen, Svalbard. The volume estimates are based upon a dense net of GPR-retrieved ice thickness data collected over several field campaigns spanning the period 1999-2012. The total area and volume of the ensemble are 116.06 ± 4.53 km2 and 10.439 ±0.373 km3, respectively, while the individual areas, volumes and average ice thickness lie within 2.6-50.4 km2, 0.08-5.54 km3 and 29-108 m, respectively. Volume/area scaling relationships overestimate the total volume of these glaciers by up to 35% with respect to our calculation. On the basis of the pattern of scattering in the radargrams, we also analyse the hydrothermal structure of these glaciers. Nine of the ten are polythermal, while only one is entirely cold.

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Radio-echo sounding and ice volume estimates of western Nordenskiöld Land glaciers, Svalbard

  • A. Martín-Español (a1), E.V. Vasilenko (a2), F.J. Navarro (a1), J. Otero (a1), J.J. Lapazaran (a1), I. Lavrentiev (a3), Y.Y. Macheret (a3) and F. Machío (a4)...

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