the Thermal stream in velikobritanii. Measurements of a geothermal gradient
you are: the Thermal stream in velikobritanii
Scale of an estimation of reliability of measurements of a geothermal gradient
0. The chink is not surrounded. There are only a few separate readout. Thermal balance was not established
1. Temperatures are measured by the mercury maximum thermometer with intervals> 100 m. Thermal balance in a chink was established
2. The Same, that 1, but still is available special instructions on absence of inflow of water in a chink
3. The resistance thermometer in not surrounded chinks with irregularly varying gradient or in chinks in which thermal balance was not established
4. The Same, that 2, but readout are taken with an interval <100 m
5. The resistance thermometer in not surrounded chink in the absence of visible inflow of water. The equilibrium temperature can be received also by extrapolation of results of measurements in a transitive mode (method Bullarda or method Oksburga, etc.)
6. The resistance thermometer. Equilibrium temperatures are measured with intervals <20 m in the surrounded chinks or in chinks where there is quite reliable information on absence of inflow of water
7. The Same, that 6, but intervals make 10 m. Depth of a chink of 150 m
8. The Same, that 7, but depth of a chink> 300 m
9. Ideal carrying out of measurements: accuracy of readout reaches 0,05 K.Skvazhina is well enough isolated from surrounding breeds. A balance condition. Measurements are spent with intervals of 10 m. Absence of inflow of water on depths of measurements. The chink is deeper 300 m; according to stratigrafiej a cut presence vodonosnogo horizon below a chink is improbable. The conditions characterised by a concrete code, are applicable at least to 150 m of a trunk of a chink or on all its length if its general depth is less 150 m. As a whole the big size of a code specifies in big reliability.
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