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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.
We have investigated here the 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. From 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 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 also similar similar changes. Use 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.