Brief communication: Estimating the ice thickness of the Müller Ice Cap to support selection of a drill site
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Brief communication : Estimating the ice thickness of the Müller Ice Cap to support selection of a drill site. / Zinck, Ann Sofie Priergaard; Grinsted, Aslak.
In: Cryosphere, Vol. 16, No. 4, 2022, p. 1399-1407.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Brief communication
T2 - Estimating the ice thickness of the Müller Ice Cap to support selection of a drill site
AU - Zinck, Ann Sofie Priergaard
AU - Grinsted, Aslak
N1 - Publisher Copyright: © 2022 Ann-Sofie Priergaard Zinck.
PY - 2022
Y1 - 2022
N2 - The Müller Ice Cap will soon set the scene for a new drilling project. Therefore, ice thickness estimates are necessary for planning, since thickness measurements of the ice cap are sparse. Here, three models are presented and compared: (i) a simple Semi-Empirical Ice Thickness Model (SEITMo) based on an inversion of the shallow-ice approximation by the use of a single radar line in combination with the glacier outline, surface slope, and elevation; (ii) an iterative inverse method using the Parallel Ice Sheet Model (PISM), and (iii) a velocity-based inversion of the shallow-ice approximation. The velocity-based inversion underestimates the ice thickness at the ice cap top, making the model less useful to aid in drill site selection, whereas PISM and the SEITMo mostly agree about a good drill site candidate. However, the new SEITMo is insensitive to mass balance, computationally fast, and provides as good fits as PISM.
AB - The Müller Ice Cap will soon set the scene for a new drilling project. Therefore, ice thickness estimates are necessary for planning, since thickness measurements of the ice cap are sparse. Here, three models are presented and compared: (i) a simple Semi-Empirical Ice Thickness Model (SEITMo) based on an inversion of the shallow-ice approximation by the use of a single radar line in combination with the glacier outline, surface slope, and elevation; (ii) an iterative inverse method using the Parallel Ice Sheet Model (PISM), and (iii) a velocity-based inversion of the shallow-ice approximation. The velocity-based inversion underestimates the ice thickness at the ice cap top, making the model less useful to aid in drill site selection, whereas PISM and the SEITMo mostly agree about a good drill site candidate. However, the new SEITMo is insensitive to mass balance, computationally fast, and provides as good fits as PISM.
U2 - 10.5194/tc-16-1399-2022
DO - 10.5194/tc-16-1399-2022
M3 - Journal article
AN - SCOPUS:85129294806
VL - 16
SP - 1399
EP - 1407
JO - The Cryosphere
JF - The Cryosphere
SN - 1994-0416
IS - 4
ER -
ID: 342925373