Abstract
For the research of apparent unit area discharge of spring, trial calculations were carried out on the Karst-spring resources in Kusama and Nariwa plateaus. The results are as follows:
Karst region
Kusamaplateau, north part 1.33 4.2 480
Kusamaplateau, south part 1.04 16.3 1, 500
Nariwa plateau 4.7 0.256 108
Apparent unit area discharge of spring, Z can be expressed by the following formula:
where Q is discharge average of springs, A is the area of same hydro-geologic condition and n is the number of springs in that area. Values of Z in Karst region and the north-west area of Mt. Daisen volcano are plotted against corresponding values of Q on the logarithmic paper. The result is as shown in Fig. 9. Plotted points are distributed on a linear zone. This fact suggests the availability of the conception of “apparent unit area discharge of spring” in the comparison of spring resources.
The author asserts to be of importance to calculate the unit area discharge Z for the evaluation of spring resources by hydrogeological survey for the exploitation and further development of fissure water resources.
