莱州湾东岸动力地貌对陆海相互作用的响应研究

发布时间：2018-01-29 22:57

本文关键词： DEM 河流地貌沙坝-o_湖系统全新世莱州湾　出处：《海洋科学》2016年08期 　论文类型：期刊论文

【摘要】：基于SRTM3_DEM、RS数据分析,结合野外调查和前人研究结果,作者对莱州湾东岸临海冲积-海积小平原的地貌特征及地貌发育进行了研究。研究表明:研究区的海岸地貌结构存在横向上的沙坝-o_湖体系以及纵向上的连岛沙坝-o_湖系统;入海河流下游具有系统性的弯曲特征,其与横向上的沙坝-o_湖体系相对应,是自全新世中期以来海岸带陆海相互作用最显著的河流地貌标志;基于DEM的水文分析显示:研究区西部存在自南而北和自东向西的地势倾斜,王河流域与自东向西的王河下游古河道相对应,现今河道及古河道从DEM中以不同阈值提取的河网得到表达。
[Abstract]:Based on SRTM3DEMRS data analysis, combined with field survey and previous research results. The authors have studied the geomorphological characteristics and geomorphological development of the littoral alluvial-marine small plain on the east coast of Laizhou Bay. The coastal geomorphological structure of the study area is characterized by the horizontal sanddam-olake system and the longitudinally Liandao dam-olake system. The lower reaches of the rivers have systematic bending characteristics, which correspond to the sanddam _ lake system in the transverse direction, and are the most significant landform marks of the land- sea interaction in the coastal zone since the middle Holocene. The hydrological analysis based on DEM shows that there is a slope of topography from south to north and from east to west in the western part of the study area, and the Wanghe River basin corresponds to the paleochannel in the lower reaches of the Wanghe River from east to west. The current channel and ancient channel are expressed by the river network extracted from DEM with different thresholds.
【作者单位】：鲁东大学资源与环境工程学院;
【基金】：山东省自然科学基金资助项目(ZR2013DL006)~~
【分类号】：P737.1
【正文快照】： 海岸发育是在陆海相互作用下完成的,全新世中晚期的海岸发育则是伴随着全球高海面(大西洋期)之后的阶段性海退过程中完成的,并保留了丰富的海岸地貌记录、沉积记录与若干动力地貌信息,为研究海岸地貌过程与地貌演变、海洋地貌动力来源提供了可能[1]。当前的中国河口海岸环境变

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