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 沉积物长期净输运证实了程鹏( 2000 )关于沉积物在成山头以北近岸有向东和向东北的净输运趋势的猜测。