著者

蔵田 延男

出版者

Tokyo Geographical Society

雑誌

地学雑誌 (ISSN:0022135X)

巻号頁・発行日

vol.74, no.6, pp.325-340, 1965

被引用文献数

1

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Since 1946, the exploration used every kinds of prospecting methods to discover groundwater courses in the lava-flows had been practiced on the extensive lower slopes of Mt. Fuji. In this report, the historical explanations and my dearest datum collected extending over past eighteen years are disclosed.<BR>There are several paragraphs, on the geophysical prospecting in large scale derived from the first jointing exploration of 1947, on the adventurous borings to find out the subterranean river in the Mishima lava-flow, on the successful explorations used electric prospecting by the Department of Agriculture and Forestry, on the investigation for Kakitagawa springs as the biggest spring in Japan, on the salt-water encroachment in the artesian aquifer on the southern foot of Mt. Fuji and on the troublesome study to research the hydrogeological connection between the Lake Motosu and the other lakes on the northern foot of the same.

著者

蔵田延男 著

出版者

高山書院

巻号頁・発行日

1947

著者

蔵田 延男

出版者

公益社団法人 日本地下水学会

雑誌

日本地下水学会会誌 (ISSN:00290602)

巻号頁・発行日

vol.25, no.2, pp.109-115, 1983-05-31 (Released:2012-12-11)

参考文献数

3

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The Hashirimizu spring had been utilized for the city water supply of Yokosuka City, since one hundred years ago.“ Where the spring water come from ?” was a mysterious question for a long time.From 1976 to 1978, we could chtllenge to elucidate the semieternal puzzle by means of thermal-infrared imagery method (on air), measurement of temperature of sea-water (by sea), gammaray survey (carborn), geological test boring, pumping water well test and others.It was presumed that the origin of the spring water would be came up from plural brecciated rock zones in Neogene formation.The brecciated zones are extending from the western coast to the eastern coast of Miura peninsula and accordingly the spring has distinct characteristics in constant flowing quantity and water quality all the year round, in spite of its too-small catchment-area compared with yielding amounts from the spring.Next, we could understand that, the yield of the spring had only 300 cubic meters a day or a little more as a surplus, beyond the daily yield of 2,700 cubic meters a day. This matters was actually certified by installation of a horizontal water collector with radially installed strainers at a suitable site to get superfluous ground-water.