Temperature a gradient in ispanii. A thermal stream

you are: Temperature a gradient in ispanii

Till now exact measurements of temperature or a temperature gradient are spent only in that interval of depths where heat conductivity could not be measured. Therefore calculations of a thermal stream are based on the factors of heat conductivity measured on samples from areas with types of breeds, similar to what are assumed on intervals of depths where gradients of temperatures are known.

From a surface to depth of 3500 m where all measurements of the temperatures were spent almost, prevailing types of breeds are limestones and a chalk (dany - the top chalk), clay slates, argillity, aleurolites and sandstones (the bottom chalk, jura, trias). Factor of heat conductivity of these types of breeds very much izmenchiv. Among 134 samples of a core (the bottom chalk - jura) which have undergone to measurement, pure sand and sandstones show the highest values, argillity and slates in a direction, perpendicular zaleganiju, - the lowest values.

On the data saved up to the present moment about heat conductivity factors only Danish (verhnemelovye) limestones and a chalk show heat conductivity factors homogeneous enough precisely to estimate a thermal stream. In the central parts of the Danish subpool these types of breeds often meet on depths from several tens metres to 1000 2000 m. these Breeds - a fine-grained biogene chalk and limestone. It is supposed, that temperatures in a face of the chinks drilled in it litologicheskom division in five places of northern Jutland, are exact enough to give reliable values of a thermal stream. Besides, for the same purpose temperature measurements from an old chink around Copenhagen, drilled in the same litologicheskih versions of breeds can be used.