深海风暴的原位观测

 深海风暴是高悬浮颗粒浓度水体在深海近海底的快速运动，能够损坏甚至摧毁一切障碍物，改变海底地形，影响深海底栖生态环境，但对其发生过程和沉积记录的认识尚缺乏原位观测研究。选择南海东北部台湾岸外高屏海底峡谷堤岸，通过布放锚系原位观测了2016年9月一次由浊流活动引发深海风暴的沉积物弥散发生过程，发现其表现为近海底悬浮颗粒浓度快速增加，并伴随温度升高和盐度降低。研究认为，深海风暴的沉积物弥散是海底峡谷沉积纹层形成的主要动力过程。

In-situ observations of deep-sea storms

The deep-sea storm involves the rapid movement of the water with high suspended particle concentration near the bottom of the deep sea. It can damage or even destroy all obstacles, change the submarine topography, and affect the benthic ecological environment. However, in-situ observational studies of its occurrence and the sedimentary record were few and far between. This paper studies the sediment dispersion process of a deep-sea storm in September 2016 caused by the turbidity current activity and observed in situ by deploying a mooring system on the levee of the Gaoping Submarine Canyon in the northeastern South China Sea. It is shown that the suspended particle concentration in places near the bottom increases rapidly with the increase of the temperature and the decrease of the salinity. It is believed that the sediment dispersion of the deep-sea storm is the main dynamic process for the formation of sedimentary laminae in the submarine canyon.