データ不足の山岳地域における地下水の動態の評価
Ya-Sin Yang1, Hsin-Fu Yeh1, Chia-Chi Huang1
1Department of Resources Engineering, National Cheng Kung University, Tainan 701, Taiwan (ROC).
まとめ
台湾の地下水レベル
科学分野:
- 水学と水地学
- 環境科学
- 水資源管理
背景:
- 地球規模の気候変動と人間の活動により 水資源への圧力は高まっています
- 地下水の充填,貯蔵,管理には山岳地帯が不可欠です.
- 山岳地域での限られたデータは,地下水の評価に課題をもたらします.
研究 の 目的:
- 台湾の中央の山岳地帯の地下水位の変化を長期的に評価する.
- 地下水位と降水量の関係を分析するために,単位のパラメータモデルを使用します.
- 山岳地帯の地下水管理のためのAquiModモデルの実用性を評価する.
主な方法:
- 地下水モデル AquiMod を利用した.
- 23の監視ステーションからの長期地下水レベルデータ (2010-2021) を分析した.
- モデルの校正,予測,感度分析を行いました.
主要な成果:
- 山岳地帯の地下水位と降雨量との間に強い相関関係があることが判明しました.
- AquiModモデルは14のステーションで満足のいく予測 (Nash-Sutcliffe効率0.5-0.9) を達成した.
- モデルの性能はデータギャップ,複雑な地質学,モデル化されていないリチャージ/人為的要因によって制限された.
結論:
- 集積パラメータモデルは,山岳地帯の地下水資源を評価するための実用的なツールです.
- モデル感度分析により,地下水の反応に影響を与える主要な不飽和地帯のパラメータが特定されました.
- 発見は,山岳地域の持続可能な水資源管理の基準となる.
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