別府火山性扇状地南部域における不圧地下水位の長期変動

• 梁 熙俊

  京都大学大学院理学研究科附属地球熱学研究施設

• 柴田 智郎

  京都大学大学院理学研究科附属地球熱学研究施設

書誌事項

タイトル別名

• Long-term changes in unconfined groundwater level in the southern Beppu volcanic fan
• ベップ カザンセイ センジョウチ ナンブイキ ニ オケル フアツ チカ スイイ ノ チョウキ ヘンドウ

抄録

Transition in effective precipitation, land use change and discharge of hot spring reveals the long term changes in the unconfined groundwater level in the southern Beppu volcanic fan from 1971 to 2019. The unconfined groundwater level was periodically fluctuated between 40 m and 50 m above sea level and indicated the maximum value in October or November and the minimum value in April or May. Annual effective precipitation was related to the maximum groundwater level in each year and it had decreased 0.7 mm every year. The urban area was slightly increased from the 1970s to 2016, but it was not a factor to decrease the unconfined groundwater level. The hot spring yield was inversely related to the maximum groundwater level in each year and it had increased 7.9 mm/y, which is approximately 11 times higher than the effective precipitation. Thus, it could conclude that the increase of the hot spring yield mainly affected the decline of the unconfined groundwater level from 1971 to 1999.

収録刊行物

• 地下水学会誌

  地下水学会誌 63 (3), 151-157, 2021-08-31

  公益社団法人 日本地下水学会

キーワード

• Beppu volcanic fan
• Effective precipitation
• Hot spring yield
• Land use
• Unconfined groundwater level

詳細情報

• CRID: 1390289475882170752
• NII論文ID: 130008091202
• NII書誌ID: AN10088275
• DOI: 10.5917/jagh.63.151
• ISSN: 21855943
• ISSN: 09134182
• NDL書誌ID: 031689359
• Web Site: http://id.ndl.go.jp/bib/031689359
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031689359
• Web Site: https://www.jstage.jst.go.jp/article/jagh/63/3/63_151/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可