INFLUENCE OF AN ARTIFICIAL HEADLAND ON BATHING BEACH: A CASE FROM THE MOON BAY BEACH, LONGKOU
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摘要: 岬湾海岸是世界上分布最为广泛的海岸形态,其形态特征可以反映岸线的长期冲淤变化趋势。龙口市月亮湾海水浴场于2005年建成之前,本是龙口沙坝——潟湖体系的沙坝沿岸部分,该平直岸线区域一直处于蚀退状态,蚀退速度为3 m/a。2个人工岬角在此建立之后,岬间海滩一直以1.5 m/a的速度缓慢淤积,目前已趋于平衡状态。笔者运用经验抛物线模型,通过Mepbay软件对海滩形态进行了模拟,初步确定了月亮湾海滩的平衡形态。2013年3月至2014年1月的定位剖面测量数据显示,月亮湾海滩单宽体积变化为17 m3/m左右。Abstract: The headline beach is a kind of most widely distributed coastal morphology in the world. The morphological characteristics of the beach are the result of long-term coastal erosion. Before the Moon Bay beach was built in 2005, this region is a part of the straight shoreline of the Longkou barrier-lagoon system which was under erosion and the erosion speed was 3m/a. After the two artificial headlands were built up, the cape beach turned to a state of slow deposition with a speed of 1.5m/a, and now it is under a balanced status. The positional profile measurement data collected from March 2013 to January 2014 shows that the volume change of Moon Bay beach is about 17m3/m. The parabolic model and Mepbay software were used for simulating the beach morphology, and the results indicate that the shape of Moon Bay beach is basically under equilibrium。
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Key words:
- artificial headland /
- headline beach /
- equilibrium profile /
- Moon Bay beach in Longkou
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