The ice-free topography of Svalbard

Fürst, J.J.; Navarro, F.; Gillet‐Chaulet, F.; Huss, M.; Moholdt, G.; Fettweis, X.; Lang, C.; Seehaus, T.; Ai, S.; J, B.T.; Benn, D.; Björnsson, H.; A, D.J.; Grabiec, M.; Kohler, J.; Lavrentiev, I.; Lindbäck, K.; Melvold, K.; Pettersson, R.; Rippin, D.; Saintenoy, A.; Sánchez‐Gámez, P.; V, S.T.; Sevestre, H.; Vasilenko, E.; H, B.M.

Авторы: Fürst Johannes J., Francisco Navarro, Fabien Gillet‐Chaulet, Matthias Huss, Geir Moholdt, Xavier Fettweis, Charlotte Lang, Thorsten Seehaus, Songtao Ai, Benham Toby J., Doug Benn, Helgi Björnsson, Dowdeswell Julian A., Mariusz Grabiec, Jack Kohler, Ivan Lavrentiev, Katrin Lindbäck, Kjetil Melvold, Rickard Pettersson, David Rippin, Albane Saintenoy, Pablo Sánchez‐Gámez, Schuler Thomas V., Heïdi Sevestre, Evgeny Vasilenko, Braun Matthias H.
Журнал: Geophysical Research Letters
Год издания: 2018
Издательство: American Geophysical Union
Местоположение издательства: United States
DOI: 10.1029/2018GL079734
Аннотация: We present a first version of the Svalbard ice-free topography (SVIFT1.0) using a mass conserving approach for mapping glacier ice thickness. SVIFT1.0 is informed by more than one million point-measurements, totaling more than 8 700km of thickness profiles. SVIFT1.0 is publicly available and represents the geometric state around the year 2010. Our estimate for the total ice volume is 6199 km3, equivalent to 1,5 cm sea-level rise. The thickness map suggests that 13% of the glacierized area is grounded below sea-level. A complementary map of error estimates comprises uncertainties in the thickness surveys as well as in other input variables. Aggregated error estimates are used to define a likely ice-volume range of 5200 - 7300km3. The ice-front thickness of marine-terminating glaciers is a key quantity for ice-loss attribution because it controls the potential ice discharge by iceberg calving into the ocean. We find a mean ice-front thickness of 135m for the archipelago (likely range 123 - 158 m).
Добавил в систему: Лаврентьев Иван Иванович

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The ice-free topography of Svalbardстатья

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