Settling particulate matter(SPM) is widely used to describe the sedimentary environment.We have investigated here the SPM collected with a time-series sediment trap in the Heini Bay,Weihai,Shandong Peninsula,China,dur...Settling particulate matter(SPM) is widely used to describe the sedimentary environment.We have investigated here the SPM collected with a time-series sediment trap in the Heini Bay,Weihai,Shandong Peninsula,China,during the super typhoon Muifa(August 2011,maximum wind speed 55 m/s).Meteorological and hydrological parameters were measured for 18 days.By analyzing the particle flux,grain size,and loss-on-ignition(organic matter content) of SPM we found dramatic changes in these parameters,induced by typhoon Muifa for about 6 days.With the arrival of typhoon,the daily SPM fluxes increased sharply to the maximum at 76.4 g/(m^2·d) on the first day and this increase is about 9 times of the normal value,and after 6 days the SPM decreased to the normal value gradually.Other parameters,such as grain size of SPM and organic matter also experienced similar changes.Using these SPM parameters,we divided the settling progress by cluster analysis into three phases:strong(for 3 days),weak(for 3 days),and zero typhoon impact.展开更多
本文研究了稀释悬浮体中刚性粒子对的形成率。体系中布朗运动效应小于粒子的强迫运动。后者或是重力相对运动,或是轴对称纯变形运动。本文提出了一个新方法,即求解对分布边界层方程法(在边界层中,van der Waals引力与强迫运动可以相比)...本文研究了稀释悬浮体中刚性粒子对的形成率。体系中布朗运动效应小于粒子的强迫运动。后者或是重力相对运动,或是轴对称纯变形运动。本文提出了一个新方法,即求解对分布边界层方程法(在边界层中,van der Waals引力与强迫运动可以相比),从而第一次得到了粒子碰并率的严格的渐近解。文中还计算了两类强迫运动中的捕获系数。对于轴对称压缩性纯变形运动的均匀粒子,结果与Zeichner和Schowalter用轨迹计算法得到的,伸展性纯变形运动的捕获系数一致。展开更多
基金Supported by the National Natural Science Foundation of China(Nos.41076031,41306190)the Ocean Public Welfare Industry Special Funds for Scientific Research(No.200905004-7)
文摘Settling particulate matter(SPM) is widely used to describe the sedimentary environment.We have investigated here the SPM collected with a time-series sediment trap in the Heini Bay,Weihai,Shandong Peninsula,China,during the super typhoon Muifa(August 2011,maximum wind speed 55 m/s).Meteorological and hydrological parameters were measured for 18 days.By analyzing the particle flux,grain size,and loss-on-ignition(organic matter content) of SPM we found dramatic changes in these parameters,induced by typhoon Muifa for about 6 days.With the arrival of typhoon,the daily SPM fluxes increased sharply to the maximum at 76.4 g/(m^2·d) on the first day and this increase is about 9 times of the normal value,and after 6 days the SPM decreased to the normal value gradually.Other parameters,such as grain size of SPM and organic matter also experienced similar changes.Using these SPM parameters,we divided the settling progress by cluster analysis into three phases:strong(for 3 days),weak(for 3 days),and zero typhoon impact.
文摘本文研究了稀释悬浮体中刚性粒子对的形成率。体系中布朗运动效应小于粒子的强迫运动。后者或是重力相对运动,或是轴对称纯变形运动。本文提出了一个新方法,即求解对分布边界层方程法(在边界层中,van der Waals引力与强迫运动可以相比),从而第一次得到了粒子碰并率的严格的渐近解。文中还计算了两类强迫运动中的捕获系数。对于轴对称压缩性纯变形运动的均匀粒子,结果与Zeichner和Schowalter用轨迹计算法得到的,伸展性纯变形运动的捕获系数一致。
