Evaluation of total sediments movement on the Abukuma River and the Sendai Bay Coast

阿武隈川和仙台湾沿岸总泥沙运动评价

• 批准号: 11650520
• 负责人: SAWAMOTO Masaki
• 金额: $ 2.18万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650520/
• 关键词: Sediment Movement; Abukuma River; Sendai Bay Coast; Sediment Balance; River Mouth Process; 総合土砂収支; 漂砂; 海岸侵食; 海岸浸食

1. Reexamining the results of field survey on the Abukuma River mouth morphology conducted by ourselves since 1984, sediment movement and sediment balance were studied from various time scale of view. It was shown that the estury have a function as a pocket for sediment and the time scale of sediment movement are controled by the ratio of this volume and the sediment flux by the external forces.2. A water runoff and sediment discharge of thle Abukuma River was modeled from the upper reach to the river mouth and the sediment supply from the river to the Sendai Bay Coast was reasonably evaluated.3. Morphology changes, sendiment characteristics and waves along the Sendai Bay Coast and the Fukushima Coast were examined and the sediment balance of the Sendai Bay Coast was evaluated quantatively.4. Combining the above results, the total sediment movement was evaluated both along the Abukuma River and the Sendai Bay Coast. It was pointed out that the Sendai Bay Coast was changed its state from dynamic equilibrium to the unequilibrium state because of lack of sediment supply and the obstraction of sand drift along the coast.5. The engineering measures were considered for the unequilibrium state of sediment along the Sendai Bay Coast.

1。重新审查自1984年以来我们自己进行的关于Abukuma河口形态的现场调查结果，从各种时间范围内研究了沉积物运动和沉积物平衡。结果表明，阳离子的功能是沉积物的口袋，沉积物运动的时间尺度由外力的比率和沉积物通量的比率控制。2。从上游到河口的河流径流和沉积物排放，从河流到仙台湾海岸的沉积物供应得到了合理的评估。3。检查了仙台湾海岸和福岛海岸沿线的形态变化，发送特性和波浪，并对仙台湾海岸的沉积物平衡进行了数量评估。4。结合上述结果，对阿布库马河和仙台湾海岸的总沉积物运动进行了评估。有指出的是，由于缺乏沉积物供应和沿海岸的沙子漂移，仙台湾海岸从动态平衡变为不平衡状态。5。考虑了仙台湾海岸沿着沉积物的不平衡状态的工程措施。

项目成果

Totok Suprijo: "A dynamic Model on the river mouth change"IAHR Symp.River, Coastal & Esturine Morphodynamics. 2. 433-442 (2001)

Totok Suprijo：“河口变化的动态模型”IAHR Symp.River，沿海

Totok Sprijo: "A dynamic model on the river mouth change"IAHR Symp. River, Coastal & Esturine Morphodynamics. Vol. 2. 433-442 (2001)

Totok Sprijo：“河口变化的动态模型”IAHR Symp。

Tsuyoshi Kotoura: "Quasi-three dimensional flood runoff model on surface and subsurface flows"Annual Journal of Hydraulic Engineering. 121-126 (2001)

Tsuyoshi Kotoura：“地表和地下流的准三维洪水径流模型”水利工程学年刊。

Akira Mano: "The August 1998 flood disaster in the Abukuma River basin"Journal of Natural Disaster Science. 22. 1-11 (2000)

马野彰：《1998年8月阿武隈河流域洪涝灾害》自然灾害科学杂志。

Masaki Sawamoto and Akira Mano: "Lecture Notes of the 37th Summer Seminar on Hydraulic Engineering, 2001 Course B"Coastal Engineering Committee &. Committee on Hydraulics. 130 (2001)

泽本正树、真野彰：《第37届水利工程夏季研讨会讲义，2001年B课》海岸工程委员会