Volume of Martian midlatitude glaciers from radar observations and ice flow modeling

N. B. Karlsson, L. S. Schmidt, C. S. Hvidberg

doi:10.1002/2015gl063219

Volume of Martian midlatitude glaciers from radar observations and ice flow modeling

DOI Web Site Web Site 被引用文献2件

N. B. Karlsson

Centre for Ice and Climate, Niels Bohr Institute University of Copenhagen Copenhagen Denmark
L. S. Schmidt

Centre for Ice and Climate, Niels Bohr Institute University of Copenhagen Copenhagen Denmark
C. S. Hvidberg

Centre for Ice and Climate, Niels Bohr Institute University of Copenhagen Copenhagen Denmark

書誌事項

公開日: 2015-04-27

権利情報

http://onlinelibrary.wiley.com/termsAndConditions#vor

DOI

10.1002/2015gl063219

公開者: American Geophysical Union (AGU)

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説明

<jats:title>Abstract</jats:title><jats:p>Numerous glacier‐like forms have been identified in the midlatitudes of Mars, and within recent years the acquisition of radar sounding data has revealed that the features are chiefly composed of water ice. Here we use radar observations in combination with ice flow models and inverse methods to calculate the volume of ice present at the midlatitudes of Mars. In order to obtain ice thicknesses, we infer the yield stress of the ice deposits, and we find that they are consistently lower than those of most terrestrial glaciers. We estimate the present ice volume of lobate debris aprons (identified by Levy et al. (2014)) on Mars to correspond to 1.55 · 10<jats:sup>5</jats:sup> km<jats:sup>3</jats:sup> with an uncertainty of 25%. This corresponds to a global ice cover of 1.1m. Thus, the water ice found at midlatitudes is an important water reservoir, and an important part of the global surface ice budget.</jats:p>