日本地下水学会会誌
Online ISSN : 2186-5515
Print ISSN : 0029-0602
霞ケ浦北岸台地.出島地域における地下水流動系の解析(第二報)
新藤 静夫石川 力
著者情報
ジャーナル フリー

27 巻 (1985) 4 号 p. 157-170

詳細
PDFをダウンロード (2665K) 発行機関連絡先
抄録

We discussed basic characteristics on the groundwater bearing conditions of the Dejima area in our first report. The present report is concerned with the result of subsequent detailed research on groundwater flow systems in the experimental basin.
Table 1 summarizes the major arguments of our study. At first, we divided the groundwater flow systems of this area into three category from their spacial scale. That is to say, the partial scale, the local scale and the regional scale.
The dominating factors on the groundwater flow systems are different according to the above mentioned scale. In the case of the small scale, the groundwater phenomena, for instance“ concentrated flow of groundwater”, are more intensively affected by the geological factors rather than topographic conditions.
On the other hand in the case of the regional flow system of which scale covers one drainage basin, the topographic conditions come up as the dominating factor for groundwater flow systems.
Next, in this paper, we emphasized the human activities on groundwater. Especially, irrigation to paddy fields becomes so large that it can no more be disregarded as compared to natural factors.
The examples of such case are given below.
1) In the paddy fields which are irrigated in summer season, the groundwater level rises about 2-4m compare with the other areas.
2) Ephemeral groundwater mounds or artificial groundwater mounds appear in the paddy areas within summer season.
3) The direction and velosity of groundwater flow vary with the above mentioned conditions.

著者関連情報
© 公益社団法人 日本地下水学会
前の記事 次の記事

閲覧履歴
後続誌

地下水学会誌

feedback
Top