CAJ | 학술논문

利用1935年、1962年、1979年、2004年这四个年份的海图资料，建立了甬江口及附近海域的数字高程模型（DEM），进而定量计算了不同时段的海床平面冲淤变化、海岸演变和滩槽平面变化。结果表明，在1935-2004年间，甬江口及附近海域总体上以轻微淤积为主，年均淤积速率4.24 cm/a；岸线持续向海推进，潮滩呈淤涨态势，而深槽则趋于萎缩。但冲淤性质在不同时段有所不同，呈现出由冲转淤的调整趋势，这种趋势主要是人为因素作用的结果。
이용1935년、1962년、1979년、2004년저사개년빈적해도자료，건립료용강구급부근해역적수자고정모형（DEM），진이정량계산료불동시단적해상평면충어변화、해안연변화탄조평면변화。결과표명，재1935-2004년간，용강구급부근해역총체상이경미어적위주，년균어적속솔4.24 cm/a；안선지속향해추진，조탄정어창태세，이심조칙추우위축。단충어성질재불동시단유소불동，정현출유충전어적조정추세，저충추세주요시인위인소작용적결과。
With four sea charts of 1935, 1962, 1979 and 2004, the digital elevation models of Yongjiang River mouth and vicinity are built. And then, calculation of variation in erosion-sedimentation of the seabed plane, coastline and foreshore&deep channels is quantitatively performed. The result indicates that during the period of 1935-2004, the seabed plane is mainly characterized by slight sedimentation at the rate of 4.24 cm/a, along with the coastline advancing, the foreshore silting and the deep channels shrinking. However, the nature of erosion and sedimentation differs from period to period, presenting a trend of change from erosion to deposition. This trend is mainly due to the influence of human impacts.