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日本地下水学会会誌
Vol. 15 (1973) No. 1 p. 31-36

記事言語:

http://doi.org/10.5917/jagh1959.15.31


Water well has a large-diameter hole, and is protected by the thick steel casing for the sake of pumping-up of water.
The writer fited the probe of small density logging equipment in water wells, as shown in figure 1.
A water well in Sofue toun Aichi prefecture which has the already known data of normal resistivity and natural-gamma logs was tested with use of the improvemental density logging equipment to depth of 160 meters.
In consequence, the writer known that density logs was more efficiency for the geological identification in quaternary than normal resistivity and natural-gamma logs.

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