海洋环境保护
论文1:Critical role of wave–seabed interactions in the extensive erosion of Yellow River estuarine sediments
波浪-海床相互作用在黄河河口广泛侵中的关键作用
estuatine 河口的,港湾的
erodibility侵蚀度
sediment erodibility 沉积侵蚀度
erosion侵蚀
结合实验室的侵蚀试验
turbidity 浊度、浑浊度
浑浊度急剧从50FTU增加到600-800FTU,海床标高每小时降低7mm。
attribute ……to ……将什么归因于什么
where the waves probably acted as a plough and reduced the threshold velocity and critical shear stress values,
plough犁
Wave-induced liquefaction,波浪引起的液化
Wave-induced liquefaction, characterised by the uneven build-up of excess pore pres-sures at different buried depths,
波浪引起的液化,其特征是在不同埋深处不均匀地积聚多余孔隙压力,
with in a shallow estuarine system 在浅海河湾系统内。
Advancing the understanding of sediment mobilisation and trans-port becomes essential for better understanding anthropogenic foot-prints in coastal zones and supporting practical strategies for sustain-able development of ocean resources. Many factors such as waves,currents, multi-scale meteorological events,
推进对沉积物移动和运输的理解对于更好地理解沿海地区的人为足迹和支持海洋资源可持续发展的实际战略至关重要。
meteorological 气象学的
mobility移动性,机动性
re-suspension 再悬浮
be subject to受制于
in most of the subaqueous delta region在大部分的水下三角洲地区
suspended 悬浮的,暂停的,缓期的
suspended sediment悬浮泥沙
topography地形、地貌、地形学
Notably, this erosion increasingly poses serious threats to the stability of offshore structures, oil production platforms, and underwater cables and pipelines in the Chengdao oilfield (Feng et al., 2003).
侵蚀对海岸结构稳定性、海底电缆、石油钻井平台等有巨大影响。
the physical oceanographic process 物理海洋学过程
where F is the erosion flux; E is a parameter that characterises the
bottom sediment properties;
τ
\tau
τ is the bottom shear stress induced by
waves and currents;
τ
c
r
\tau_{cr}
τcrcr is the critical shear stress required for erosion;
and n is a constant ranging from 2 to 6 in the existing literature
Turbidity transducers, 浊度传感器
sensor传感器
triaxial-erosion combined experiments三轴侵蚀联合试验
flume水槽
Vacuum真空的
storm暴雨
the acoustic altimeter声学测高仪
flume scouring experiments,水槽冲刷试验
waves and currents洋流
the drag cofficient 阻力系数
wave friction factor related to the bed roughness,
波浪摩擦因素。
where
A
δ
A_δ
Aδ is the near-bottom excursion amplitude and ksis the bottom
physical roughness (Lou and Peter, 1996). Ucis the measured current
velocity at 50 cm height above the boundary and U is the bottom orbital
velocity, of which the maximum value is calculated by,
Threshold velocity 阈值速度