| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for acquiring electric specific resistance survey data, in which an actual natural potential is previously measured without feeding current before transmitting a rectangular wave current for an electric specific resistance survey to a survey region, and the level of accuracy of survey data is increased so as to predict error characteristics and reliability by acquiring the electric specific resistance survey data by a system for acquiring an electric resistance in each of a normal direction and a reverse direction between a positive current transmission section and a negative current transmission section using this natural potential, thereby increasing accuracy and reliability in an underground electric specific resistance image to be actually acquired.SOLUTION: The electric specific resistance survey data acquisition method includes: (a) a step of measuring a natural potential of a survey region; (b) a step of adding a rectangular wave transmission current to the survey region and calculating a normal direction resistance value for a positive current transmission section and a reverse direction resistance value for a negative current transmission section; and (c) a step of calculating the average value between the normal direction resistance value and the reverse direction resistance value so as to use for an electric resistance value of electric specific resistance survey data.</p> |
