the Thermal stream in italii. A technique

you are: the Thermal stream in italii

If to exclude definitions of a thermal field in lakes where the oceanographic technique was applied, ways of measurements on a land were the diversified. Depth of chinks varied from 75 to 600 m; chinks have been drilled mainly in mergelistyh or sandy glinah, sometimes in limestones or kalkarenitah.

Heat conductivity glin was defined by a needle probe, is more rare in situ; in firm breeds of measurement were spent on a core. In some places heat conductivity was estimated by analogy to other areas of a similar geological structure.

Temperature measurements were carried out by means of platinum resistance or termistorov, connected with three or four bridges Uitstona with the compensatory scheme of connection of wires. The distance between two points of measurement made from 5 to 25 m. As operators used the high quality equipment, we consider, that results are quite homogeneous and comparable, despite distinction of techniques.

As to uniformity, the problem consists in how to consider influence on a thermal stream of local factors and how to make corresponding amendments. Short of geothermal fields where the thermal stream so is great, that no amendments will change essentially it, in other areas of Italy a situation very much izmenchiva. It is possible to allocate, however, some typical cases:

1. In the measured temperature gradients influence of the deforming factors connected with geographical and (or) geological conditions is accurately shown. As a rule, in this case in the measured values amendments are made.

2. On the temperature gradients measured in enough deep chinks, imperceptibly any distortions, but geographical or geological conditions are that, that it is possible to assume existence of any influences. In this case the amendment is better be not to entering.

3. The temperature gradient is measured in chinks, too small that it was possible to find out distortions, but geographical and geological conditions specify that deforming influences should take place. In this case, as a rule, amendments are brought (for example, at measurements in lakes).

4. The temperature gradient was measured in chinks, too small to notice deforming influences whereas geographical and geological conditions show, that such influences are probable; for example, speech can go about climatic changes which occur all over the world, but are not reflected in a thermal field. In this case amendments are not brought.