Two-dimensional anomalies of heat conductivity. Models l1

you are: Two-dimensional anomalies of heat conductivity

These are models in which one lens with heat conductivity raised or lowered concerning environment is in area with a homogeneous regional thermal stream. Lenses with higher heat conductivity as though focus a thermal stream and concentrate it in itself owing to what in distinctly expressed next zones the vertical component of a thermal stream appears considerably below average size. On profiles of a vertical temperature gradient minima as in a case when the profile crosses a lens and if it passes on some removal from it are accurately allocated; however in the first case fall of a gradient is less, than it is possible to expect at crossing of an infinite horizontal layer with the same difference of factors of heat conductivity. Gradient reduction conducts to growth of values of a vertical thermal stream, but out of a lens the gradient minimum is necessary on containing breeds with homogeneous heat conductivity, though there and are supported lowered (concerning averages) values of a thermal stream. On a profile In, passing at the lens end, these influences are not so great. On a surface lens presence is expressed by increase of a thermal stream over a lens and wide flat minima from both parties. If the length of lenses was essentially more, the thermal stream over an average part of each lens would be normal (i.e. Same as in a case with an infinite layer), and the refraction of a thermal stream would be simply regional effect: would strengthen a stream in a regional zone and weakened it out of this zone. It is necessary to notice, that substantial growth of a difference of heat conductivity influences intensity of a refraction a little. If the difference of heat conductivity has a return sign character of contours is almost identical, but there is a defocusing of a thermal stream round a lens and there is a regional zone of the raised thermal stream.

As a whole it is obvious, what even weak distinction of heat conductivity can cause local strengthening or easing of a vertical gradient approximately on 5% and that on the values of a thermal stream measured in limits of 100 m from the end force or another linzovidnogo of a body in the thickness in 40 m with differing heat conductivity as much will change. The reason of such change in most cases does not manage to be established to any geological signs - even on a core taken from a chink, drilled outside of a lens.