Permafrost

Temperature Regime of Atmosphere and Upper Rock Layers on High
Latitudes on Mars
O.N.Abramenko, I.A.Komarov, V.S.Isaev
(Moscow State University by M.V.Lomonosov, Faculty of Geology, Department of Geocryology)
Abstract: The study represents analysis of average diurnal, seasonal, annual atmosphere and
surface temperatures and their amplitudes.
Global Mars Climate Data Base (GMCDB) founded on the climate modeling and Global
Circulation Model (GCM) has been used for evaluation of the temporal and spatial inconstancy
of the surface atmosphere and radiation-thermal balance for the high latitude areas of Mars.
The work focused on the summary of sample processed maps dealing with the distribution
of main components of the surface radiation-thermal balance and a number of parameters
having an influence on it along the meridian and latitudinal strike for the high latitude areas
where intensive manifestation of frost cracking processes were marked. These processes
include complete radiation-heat flux to the surface and its separate part for IR spectrum; heat
flow from the surface and its component for IR spectrum; albedo and emissivity coefficient of
the surface; atmosphere pressure and density for the heights from 5 m to 3 km above the surface;
in near-surface layers of atmosphere towards the latitude and longitude directions.
An attention was paid to analysis of the temperature conditions on the surface and
near-surface atmospheric layers. In particular, next features are characteristic for the dynamics
of seasonal surface temperature: temperature comes up to the highest values at the end of
summer that leads to the warm autumn. This is changed into the strict ceasing of the average
winter temperature with the different distribution of the lowest values on selected areas.
The dynamic of temperature differentiation within the meridian and latitudinal range
shows the character of the temperature changes and its relation to the location and the forming
time of the temperature mode.
Variability of average diurnal, seasonal, annual atmosphere and surface temperatures and
their amplitudes were evaluated. These are characterized by peculiar zoning distribution on
Mars.
This work is supported by fund of RFFI (# 04-05-65110).
Key words: Temperature regime, albedo, radiation heat flux, emmisivity, zoning
Thermophisycal characteristics of dispersion soils in a wide range of
negative temperatures
O. Streletskiy 1 , Komarov I 2 ., Melchakova L 2 .
(1. Lomonosov Moscow State University, Physical Faculty, Leninskie Gory, Moscow, 119992, Russia
2.Lomonosov Moscow State University, Geological Faculty, Leninskie Gory, Moscow, 119992, Russia)
Abstract: In the report the generalization of experimental data on thermophisycal properties of
dispersion soils for the range of temperatures from -125 to +100 o С is presented. The knowledge
of these properties in a wide range of negative temperatures is useful for understanding the
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