| 2 | Impact of PhaseⅢProject of Maji Mountain Port on sediment siltation in adjacent sea area显示文摘Based on a 3-D Finite Volume Coastal Ocean Model(FVCOM), tidal dynamics has been studied in the sea area around the Phase III Project of Maji Mountain Port(MMP). Furthermore, taking typhoon 'Canhong' as an example, a storm surge and sediment model has also been established to study the impact of the Phase III Project on current flows and siltation during extreme weather. Tidal currents before and after the project have been compared. Model results show that the changes of tidal current mainly occur in the engineering areas with a magnitude change of 0.3–0.4 m/s during maximum flood and ebb tides. The flow condition for the port has been improved as the flow direction is changed to parallel to the wharf after the completion of the project. There is little siltation in the adjacent area, which will not affect the safety of ship navigation. Besides, the sudden siltation during typhoon period is relatively weak. The back silting in two days is less than 5 cm indicating no sudden siltation occurs. | JIN Zuowen ZUO Changsheng WANG Zhizu | 2017 | Acta Oceanologica Sinica2017，36，12： | 1 |
| 3 | Establishment of ocean dumping area capacity assessment model显示文摘Dumping area capacity is mainly affected by the hydrodynamic process(tidal sediment, storm surge and wave,etc.) as well as the size and depth of dumping area. Based on three-dimensional ocean circulation model known as FVCOM(Finite Volume Coast and Ocean Model) and the stochastic dynamic statistical analysis model, taking advantage of dumping ground topography evolution and dumping quantity, the author aims to discuss the influence of hydrodynamic processes and dumping activity so as to built a new model of ocean dumping area capacity. With the data of depth and dumped amount in the dumping area, the changes of bottom topographic which caused by tidal current under the natural condition based on the FVCOM hydrodynamic and sediment module, the author strive to analyze the statistical relation of the changes for dumping amount, tidal current and bottom topographic. Through real data to fit revision coefficient values, which will be regarded as topographic changes reference value affected by wave and storm surges. Thus taking this evaluation as the long-term changes in the dumping capacity. In the premise of setting up the threshold of bottom topographic changes, the dumping area capacity is calculated. Take Yangtze Estuary No. 1 dumping area as an example, As the water depth reduces by 0.5 m annually, the dumping area capacity is about 6.7 million m^3/a, the model results are in reasonable agreement with the actual amount. Then the model is validated in Luoyuan Bay dumping area,Shengsishangchuan Mountain dumping area, Dongding dumping area, Dongshan dumping area, and Wenzhou Port dumping area, it is turns out the results are similar to that of the actual observations. | WANG Zhizu ZUO Juncheng XU Ren JIN Zuowen CHEN Meixiang | 2016 | Acta Oceanologica Sinica2016，35，1： | 0 |
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