%0 Electronic Book %E Dieminger, Walter %T Zeitschrift für Geophysik, 29 / 6 %D 1963 %R 10.23689/fidgeo-3076 %I Physika-Verlag%C Würzburg %X Lorch, S.: Messung des Wassergehaltes in Böden mit der Neutronensonde. ; Thrasher, J. E. & Scheidegger, A. E.: On the Connection Between Stress and Displacements in Faulted Regions. SUMMARY 1 [Lorch, S.: Messung des Wassergehaltes in Böden mit der Neutronensonde.]: Based on results of experimental and theoretical investigations it is shown that the calibration curve of a neutron probe depends essentially on the configuration between neutron source and detector. SUMMARY 2 [Thrasher, J. E. & Scheidegger, A. E.: On the Connection Between Stress and Displacements in Faulted Regions. ]: This paper demonstrates a method of obtaining the principal direction of the stress tensor in a faulted area when the principal directions of the displacement tensor are known. Also, the mean and standard deviation of the maximum principal stress axes are determined for a randomly faulted area with null axes parallel to a plane, provided the displacement component normal to this plane has always the same sign; it is then shown that the mean is normal to the plane of the null axes. This result is important in connection with the statistical analysis of earthquake fault plane solutions inasmuch as it proves that the tectonic motion direction obtained as the “most orthogonal” direction to the null axes of an area must coincide with the average (maximum) principal stress direction. %U http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/7390 %~ FID GEO-LEO e-docs