کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1782494 1022340 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal disturbances caused by lander shadowing and the measurability of the martian planetary heat flow
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
Thermal disturbances caused by lander shadowing and the measurability of the martian planetary heat flow
چکیده انگلیسی

A measurement of the martian planetary heat flow requires the determination of the subsurface temperature gradient, which is affected by surface insolation. I investigate the propagation of thermal disturbances caused by lander shadowing and derive measurement requirements for in situ heat flow experiments. I find that for short term measurements spanning 180 sol, a measurement depth of at least 2 m is needed to guarantee a stable thermal environment directly underneath the lander for Moon-like thermal conductivities of 0.02Wm-1K-1. For extremely large conductivities of 0.1Wm-1K-1, this depth needs to be increased to 4 m, but if the probe can be deployed outside the lander structure, the respective depths can be decreased by 1 m. For long term measurements spanning at least a full martian year heat flow perturbations are smaller than 5% below a depth of 3 m directly underneath the lander. Outside the lander structure, essentially unperturbed measurements may be conducted at depths of 0.5 and 1.5 m for thermal conductivities of 0.02 and 0.1Wm-1K-1, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Planetary and Space Science - Volume 57, Issue 1, January 2009, Pages 71–77
نویسندگان
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