Remote Sensing - Dune Worlds: How Windblown Sand Shapes Planetary Landscapes - page 211

Fig. 18.7 A spectacular sidelong view from the International Space Station of dunes migrating past and across a lake in Mongolia. Image
Science and Analysis Laboratory, NASA-Johnson Space Center http://eol.jsc.nasa.gov

Thermophysical properties of selected geological materials a Table 18.1

Material k

Thermal conductivity
(J m -1

q
Density
(kg m -3 )

c
Heat capacity
(J kg -1

I
Thermal inertia
(J m -2

s -1 K -1 ) K -1 ) s -1/2 K -1 )

Granite 1.78-5.02 2650 900 2060-3460

Basalt 1.12-2.38 2900 830-900 1642-2492

Sandstone 2.1-3.80 2310 850 2054-2731

Water 0.56 999.8 4217 1536

Dry sand 0.29 1650 850 637

Mars sand b 0.044 1650 850 248

Mars dust c

0.004 1100 850 61

a

Values from Table 18.1 of Mellon et al. (2008), p. 401

b

200 lm sand at 6 mb atmospheric pressure, typical of the Martian surface

c

1 lm dust at 6 mb atmospheric pressure, typical of the Martian surface