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A method to invert MUPUS temperature recordings for the subsurface temperature field of P/Wirtanen

Hagermann, A. and Spohn, T. (1999). A method to invert MUPUS temperature recordings for the subsurface temperature field of P/Wirtanen. Advances in Space Research, 23(7) pp. 1333–1336.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1016/S0273-1177(99)00046-0
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Abstract

The thermal sensors on the penetrator of the MUPUS experiment package selected for the ESA Rosetta mission will enable us to determine the near-surface energy balance of the nucleus of comet P/Wirtanen by measuring the subsurface temperature profile and the thermal conductivity of the near-surface layers. Model calculations suggest that the penetrator itself will perturb the ambient temperature field such that the temperature profile will be smoothed if the thermal diffusivity of the nucleus is significantly smaller than that of the penetrator tube. It is possible, however, to calculate the undisturbed temperature profile from the data using a method based on a solution of the transient inverse heat conduction problem. Our model calculations show that a satisfactory estimate of the undisturbed temperature field can be obtained in comparatively little computing time by calculating the temperature distribution in the model volume from temperature histories at discrete points representing the penetrator temperature sensors

Item Type: Journal Article
Copyright Holders: 1999 COSPAR. Published by Elsevier Science Ltd
ISSN: 0273-1177
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetDeutsche Forschungsgemeinschaft
Not SetNot SetDeutsches Zentrum für Luft- und Raumfahrt e.V. [WE 150 OH 9503 7-ZA]
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 18728
Depositing User: Axel Hagermann
Date Deposited: 26 Oct 2009 16:05
Last Modified: 02 Dec 2010 20:39
URI: http://oro.open.ac.uk/id/eprint/18728
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