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北部湾海岸现代风沙与海滩沙粒度特征对比
Authors
司月君
李保生
+4 more
李志文
杜恕环
牛东风
王丰年
Publication date
1 January 2020
Publisher
Abstract
对分布在北部湾海岸--广西北海、钦州、防城港与海南西部棋子湾的88个现代风沙和95个海滩沙样品进行了粒度分析与对比。结果表明:北部湾海岸风沙与海滩沙均以细沙、中沙为主,二者在风沙中的平均含量分别为68.55%和28.61%,在海滩沙中则分别为50.57%和40.11%;海岸风沙和海滩沙的平均粒径分别为2.26 Φ和2.11 Φ,分选系数分别为0.48 Φ和0.62 Φ,偏度分别为0.00和0.04,峰态分别为0.96和1.21,海岸风沙比海滩沙略细、分选更好、偏度趋于对称、峰态趋于中等;二者粒度概率累积曲线均以跃移组分为主,海滩沙中含少量推移和悬移组分。海滩沙与风沙的粒度特征还呈现明显的区域性差异,底质以中沙为主的北海、棋子湾海滩沙与其上发育的风沙在粒度结构参数散点图上区分度更高
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Last time updated on 20/05/2021