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Numerical simulation of an outflow glacier for the study of crevasses formation and ice tongues. (CREVITON (CREVasses and Ice TONgues))
IADC_id: 28
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Call year: 2015
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The core of this project is the accomplishment of a mathematical numerical description and the numerical simulation of the time evolution of a glacier with an outlet ice flow. This research is aimed at the study of the formation of ice crevasses. The estimate of the stress of ice within the glacier and at its bottom will be resulting from the numerical simulation. The case of a tidal glacier is also considered; in particular we shall study the mechanical interaction of an ice tongue with the sea wave motion; we, also, seek conditions for the occurrence of calving events, relevant to investigations on the modifications to the morphology of a glacier, on ice mass balance and on sea level raising due to climate change.rnTest glaciers will be Hansbreen and Paierlbreen in the Hornsund fjiord, Southern Spitzbergen (Svalbard), that are well characterized with the data provided by the Polish team members, Blaszczyk and Jania. rnIn the inner part of Kongs fjiord, north-west coast of Spitzergen, where Ny-Alesund fronts onto, several glaciers reaching the sea could be good candidates for analogous testing.rnThe mathematical numerical tool, released by this project, will be characterized by a modeling approach and input parameters set making it suitable to the study of similar problems also in Antarctica. Actually, we shall consider the eastern Dome C drainage area with the Priestley, Reeves, David and Mackay outlet glaciers (Antarctica) . With Danesi and Zirizzotti we shall discuss the geological and physical aspects characterizing that area and the interactions with the surrounding environment and decide specific research targets to be addressed.rnThis proposal is based on Di Mascio and Mansutti’s expertise on mathematical modeling of continuum mechanics and thermodynamics, of phase transition processes and on the numerical solution of partial differential equations with moving boundaries. Furthermore, recently, within the project Svalglac (RIS 4660) by numerical simulation, Mansutti have successfully faced the problem of validating the conjecture of a subglacial lake at Svalbard under the Amundsenisen Plateau, Southern Spitzbergen.rnD. Mansutti, E. Bucchignani, J. Otero and P. Glowacki, Modelling and numerical sensitivity study on the conjecture of a subglacial lake at Amundsenisen, Svalbard, Applied Mathematical Modelling, DOI: 10.1016/j.apm.2014.12.043 (in press), 2015.rnD. Mansutti, E. Bucchignani, J. Otero and P. Glowacki, Numerical validation of the conjecture of a subglacial lake at Amundsenisen, Svalbard, (to be submitted to) Applied Mathematical Modelling, 2015.
National/International Cooperation:
> IASC-NAG (D. Mansutti, PI Italian Unit of co-sponsored transnational project PolarClimate – Svalglac, RIS 4660)rn> University of Silesia (Poland)rn> Istituto Nazionale di Geofisica e Vulcanologia (INGV) (Italy)
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