The ice-free topography of Svalbard

Johannes J. Fürst; Francisco Navarro; Fabien Gillet-Chaulet; Matthias Huss; Geir Moholdt; Xavier Fettweis; Charlotte Lang; Thorsten Seehaus; Songtao Ai; Toby J. Benham; Doug Benn; Helgi Björnsson; Julian A. Dowdeswell; Mariusz Grabiec; Jack Kohler; Ivan Lavrentiev; Katrin Lindbäck; Kjetil Melvold; Rickard Pettersson; David Rippin; Albane Saintenoy; Pablo Sánchez-Gámez; Thomas V. Schuler; Heïdi Sevestre; Evgeny Vasilenko; Matthias H. Braun

doi:10.1029/2018GL079734

The ice-free topography of Svalbard

Johannes J. Fürst, Francisco Navarro, Fabien Gillet-Chaulet, Matthias Huss, Geir Moholdt, Xavier Fettweis, Charlotte Lang, Thorsten Seehaus, Songtao Ai, Toby J. Benham, Doug Benn, Helgi Björnsson, Julian A. Dowdeswell, Mariusz Grabiec, Jack Kohler, Ivan Lavrentiev, Katrin Lindbäck, Kjetil Melvold, Rickard Pettersson, David RippinAlbane Saintenoy, Pablo Sánchez-Gámez, Thomas V. Schuler, Heïdi Sevestre, Evgeny Vasilenko, Matthias H. Braun

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Abstract

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, totalling more than 8700 km 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 glacierised 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 — 7300 km³. 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 135 m for the archipelago (likely range 123 — 158m).

Original language	English
Number of pages	10
Journal	Geophysical Research Letters
Volume	Early View
Early online date	5 Nov 2018
DOIs	https://doi.org/10.1029/2018GL079734
Publication status	E-pub ahead of print - 5 Nov 2018

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Fürst_2018_GRL_Ice-freetopography_finalpubversion
Copyright ©2018. American Geophysical Union. All Rights Reserved. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at: https://doi.org/10.1029/2018GL079734
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Fürst, J. J., Navarro, F., Gillet-Chaulet, F., Huss, M., Moholdt, G., Fettweis, X., Lang, C., Seehaus, T., Ai, S., Benham, T. J., Benn, D., Björnsson, H., Dowdeswell, J. A., Grabiec, M., Kohler, J., Lavrentiev, I., Lindbäck, K., Melvold, K., Pettersson, R., ... Braun, M. H. (2018). The ice-free topography of Svalbard. Geophysical Research Letters, Early View. Advance online publication. https://doi.org/10.1029/2018GL079734

@article{4c4e3fdcb0384f069a379da39b8fd502,

title = "The ice-free topography of Svalbard",

abstract = "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, totalling more than 8700 km 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 glacierised 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 — 7300 km3. 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 135 m for the archipelago (likely range 123 — 158m).",

author = "F{\"u}rst, {Johannes J.} and Francisco Navarro and Fabien Gillet-Chaulet and Matthias Huss and Geir Moholdt and Xavier Fettweis and Charlotte Lang and Thorsten Seehaus and Songtao Ai and Benham, {Toby J.} and Doug Benn and Helgi Bj{\"o}rnsson and Dowdeswell, {Julian A.} and Mariusz Grabiec and Jack Kohler and Ivan Lavrentiev and Katrin Lindb{\"a}ck and Kjetil Melvold and Rickard Pettersson and David Rippin and Albane Saintenoy and Pablo S{\'a}nchez-G{\'a}mez and Schuler, {Thomas V.} and He{\"i}di Sevestre and Evgeny Vasilenko and Braun, {Matthias H.}",

note = "This study received primary funding from the German Research Foundation (DFG) within the Svalbard - iFLOWbed project, grant number FU1032/1-1.",

year = "2018",

month = nov,

day = "5",

doi = "10.1029/2018GL079734",

language = "English",

volume = "Early View",

journal = "Geophysical Research Letters",

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Fürst, JJ, Navarro, F, Gillet-Chaulet, F, Huss, M, Moholdt, G, Fettweis, X, Lang, C, Seehaus, T, Ai, S, Benham, TJ, Benn, D, Björnsson, H, Dowdeswell, JA, Grabiec, M, Kohler, J, Lavrentiev, I, Lindbäck, K, Melvold, K, Pettersson, R, Rippin, D, Saintenoy, A, Sánchez-Gámez, P, Schuler, TV, Sevestre, H, Vasilenko, E & Braun, MH 2018, 'The ice-free topography of Svalbard', Geophysical Research Letters, vol. Early View. https://doi.org/10.1029/2018GL079734

TY - JOUR

T1 - The ice-free topography of Svalbard

AU - Fürst, Johannes J.

AU - Navarro, Francisco

AU - Gillet-Chaulet, Fabien

AU - Huss, Matthias

AU - Moholdt, Geir

AU - Fettweis, Xavier

AU - Lang, Charlotte

AU - Seehaus, Thorsten

AU - Ai, Songtao

AU - Benham, Toby J.

AU - Benn, Doug

AU - Björnsson, Helgi

AU - Dowdeswell, Julian A.

AU - Grabiec, Mariusz

AU - Kohler, Jack

AU - Lavrentiev, Ivan

AU - Lindbäck, Katrin

AU - Melvold, Kjetil

AU - Pettersson, Rickard

AU - Rippin, David

AU - Saintenoy, Albane

AU - Sánchez-Gámez, Pablo

AU - Schuler, Thomas V.

AU - Sevestre, Heïdi

AU - Vasilenko, Evgeny

AU - Braun, Matthias H.

N1 - This study received primary funding from the German Research Foundation (DFG) within the Svalbard - iFLOWbed project, grant number FU1032/1-1.

PY - 2018/11/5

Y1 - 2018/11/5

N2 - 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, totalling more than 8700 km 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 glacierised 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 — 7300 km3. 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 135 m for the archipelago (likely range 123 — 158m).

AB - 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, totalling more than 8700 km 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 glacierised 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 — 7300 km3. 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 135 m for the archipelago (likely range 123 — 158m).

U2 - 10.1029/2018GL079734

DO - 10.1029/2018GL079734

M3 - Article

SN - 0094-8276

VL - Early View

JO - Geophysical Research Letters

JF - Geophysical Research Letters

ER -

The ice-free topography of Svalbard

Abstract

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