| 研究課題/領域番号 |
23K13695
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| 研究種目 |
若手研究
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| 配分区分 | 基金 |
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| 審査区分 |
小区分31020:地球資源工学およびエネルギー学関連
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| 研究機関 | 東京大学 |
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研究代表者 |
劉 佳奇 東京大学, 大学院新領域創成科学研究科, 助教 (00885577)
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| 研究期間 (年度) |
2023-04-01 – 2026-03-31
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| 研究課題ステータス |
交付 (2023年度)
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| 配分額 *注記 |
4,680千円 (直接経費: 3,600千円、間接経費: 1,080千円)
2025年度: 1,170千円 (直接経費: 900千円、間接経費: 270千円)
2024年度: 1,690千円 (直接経費: 1,300千円、間接経費: 390千円)
2023年度: 1,820千円 (直接経費: 1,400千円、間接経費: 420千円)
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| キーワード | numerical model / fieldwork / Hydro-geo-chemical / anthropogenic impacts / marine ecosystems |
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| 研究開始時の研究の概要 |
This research will investigate the clarify how hydro-geo-bio-chemical linkages linkages transmit inland anthropogenic impacts to ecosystems. The findings are expected to convey new insights into the scientific understanding and how to balance water resource development with ecosystem conservation.
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| 研究実績の概要 |
Conceptual models as well as models based on Miyakojima Island were developed. The modeling results provide preliminary understanding of the imapcts of subsurface dams on groundwater chemistry in coastal karst aqufiers. A fieldwork was conducted focusing on assessing geological conditions and monitoring well locations both upstream and downstream of the subsurface dam. Water samples were collected from springs near the coastal areas downstream of the dam for analysis of major ions and stable isotopes. The survey aimed to identify suitable locations for coral reef sampling, but unfortunately, no appropriate sites were found. Consequently, the study will shift its focus to analyzing live shellfish, which is expected to provide also useful information on the hydro-geo-bio-chemical linkages.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
3: やや遅れている
理由
Based on the findings from the field survey, identifying suitable locations for sampling coral reefs, as initially intended, has proven challenging. Consequently, this unforeseen difficulty has led to a slight delay in the research progress compared to the original plan.
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| 今後の研究の推進方策 |
We will collect water samples from both dammed and non-dammed watersheds for comparative analysis. In our previous fieldwork survey, we encountered challenges in locating suitable areas for coral reef sampling. To address this obstacle, instead of analyzing coral reef samples as initially planned, we have opted to gather live shellfish samples. Furthermore, we will analyze the microbiological indices present in the water samples. Combining these approaches has the potential to elucidate the correlations between subsurface damming, water chemistry, and ecosystem health. Regarding the numerical modeling aspect, the models developed in previous years will undergo refinement, and the simulation results will be juxtaposed with the measurements obtained from water and shellfish samples.
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