Decade Wind and Wave Data for NW Iberia, Cabo Sillerio

Seafloor sediment mobilization on the inner Northwest Iberian continental shelf is caused largely by ocean surface waves. The temporal and spatial variability in the wave height, wave period, and wave direction has a profound effect on local sediment mobilization, leading to distinct sediment mobilization scenarios. Six grain-size specific sediment mobilization scenarios, representing seasonal average and storm conditions, were simulated with a physics-based numerical model. Model inputs included meteorological and oceanographic data in conjunction with seafloor grain-size and the shelf bathymetric data. The results show distinct seasonal variations, most importantly in wave height, leading to sediment mobilization, specifically on the inner shelf shallower than 30 m water depth where up to 49% of the shelf area is mobilized. Medium to severe storm events are modeled to mobilize up to 89% of the shelf area above 150 m water depth. […]

西北伊比利亚大陆架内侧海底沉积物活化主要受海洋表面波浪影响。波浪高度、周期及方向的时空变化对局部沉积物活化产生深远影响，导致不同的沉积物活化情景。利用基于物理的数值模型，模拟了六种粒径特定的沉积物活化情景，包括季节平均和风暴条件。模型输入包括气象和海洋数据，以及海底粒径和大陆架地形数据。结果显示，季节性变化显著，尤其是在波浪高度方面，导致沉积物活化，尤其是在水深低于30米的海底内侧，该区域可达大陆架面积的49%。中等至严重风暴事件模拟显示，在水深超过150米的区域，大陆架面积可达89%。