高强度扰动下海岸动力地貌特征研究进展

Coastal dynamic geomorphology under high intensity disturbance:research progress and perspectives

海岸带是陆地、海洋和大气相互作用最强烈的地带,也是受全球气候、海平面变化以及人类活动影响最大的地区。海岸带动力过程具有明显的海洋-陆架-海湾-海岸多尺度多物理场特点,动力地貌过程和响应机制极具特色。台风等极端气象事件的频繁发生,工程措施等强人类活动的影响,导致海岸带动力地貌演变规律呈现出更大的不确定性。从高强度扰动下海岸动力条件、极端条件影响下海岸动力地貌特征和强人类活动影响下海岸动力地貌特征等方面,综述了已有研究工作进展。全球气候变化和人类活动共同作用的海岸带多尺度动力过程和海岸地貌响应内在机制极其复杂,在未来海岸动力地貌特征的研究中,需要进一步从大气、海浪、海洋和泥沙等多物理场,海洋、陆架、海湾和海岸等多尺度,动力条件、泥沙输移和地貌塑造等多过程的角度,探究高强度扰动下海岸带动力过程、响应机制和演变规律。

The coastal zone is the strongest interaction zone among the land,ocean,and atmosphere,and it is also the area that is most affected by global climate,sea-level change,and human activities.The dynamic process of the coastal zone has obvious characteristics of the ocean-shelf-bay-coast multi-scale and multi-physical field,and its dynamic geomorphic process and response mechanism are special.The frequent occurrence of extreme meteorological events,such as typhoons,and the impact of strong human activities,such as engineering measures,have led to greater uncertainty in the dynamic geomorphic evolution of the coastal zone.The research progress of coastal dynamic geomorphology under high-intensity disturbance,extreme conditions,and strong human activities is summarized herein.Owing to the complexity of the multi-scale dynamic process of the coastal zone and the internal mechanism of coastal geomorphology response under the joint action of global climate change and human activities,it is necessary to study the characteristics of coastal dynamic geomorphology and explore the dynamic process and response mechanism of the coastal zone under high-intensity disturbance in the future from the multi-physical field perspective of atmosphere-wave-ocean-sediment,from the multi-scale perspective of ocean-shelf-bay-coast,and from the multi-process perspective of dynamic-sediment-geomorphology.