摘要
通过对日照岚山头-傅疃河口段砂质海岸典型观测剖面进行高精度重复观测、沉积物取样分析等,对2010年冬季短期岸滩演化动态进行了研究,并结合地形图、遥感影像等较长时段的历史资料(1957年~2009年),探讨岸线长期演化趋势。结果表明,滩坎-潮水沟是该段海滩特征地形,高滩-中滩间存在明显滩坎,中滩-低滩潮水沟较为典型。滩坎向陆蚀退是该段岸滩侵蚀的主要地貌标志之一,主要受该段强力冲越浪的影响。2010年冬季该岸滩整体呈上蚀下淤的趋势,短期变化以缓慢冲刷为主,侵蚀方式正从岸线蚀退型向岸滩蚀低型转变。
Based on the high-precision repeated observations on the representative cross-section and grain size analysis on surficial sediment,the short-term shoreline evolution dynamics in the winter in 2010 were studied.Combined with the topographic maps and remote sensing images,long-term shoreline evolution was also discussed.The results show that beach ridge-tidal creek is representative topographical feature.Beach ridges commonly develop between high tidal zone and middle tidal zone.Tidal creeks commonly develop between middle tidal zone and low tidal zone.The phenomenon that beach ridges swing landward is a typical signal of coastal erosion,which can be attributed to the strong impulse wave overtopping.The overall tendency that high tidal zone was eroded and low tidal zone is filled up can be clearly revealed in the winter in 2010.The coast is slowly eroded in short term and erosion pattern alters from drawing back to scouring vertically.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2014年第S1期192-195,共4页
Nuclear Power Engineering
关键词
日照
砂质海岸
海岸演化
岸滩剖面
岸滩稳定性
Rizhao,Sandy coast,Coastal evolution,Beach profile,Coastal Stability
