The result of long - term net sediment transport calculations confirms the hypothesis proposed by cheng ( 2000 ) that in this area transport of sediment directed to northeastward occurs in addition to the main trend of transport towards the east 沉積物長期凈輸運證實了程鵬( 2000 )關于沉積物在成山頭以北近岸有向東和向東北的凈輸運趨勢的猜測。