石油学报 ›› 2015, Vol. 36 ›› Issue (12): 1543-1552.DOI: 10.7623/syxb201512008

• 地质勘探 • 上一篇    下一篇

风浪作用下鄱阳湖现代滨岸滩坝的形态变化

胡晨林1, 张元福1, 姜在兴1, 王敏2, 高勇1, 白一鸣1   

  1. 1. 中国地质大学能源学院 北京 100083;
    2. 中国石油勘探开发研究院 北京 100083
  • 收稿日期:2015-05-05 修回日期:2015-09-19 出版日期:2015-12-25 发布日期:2016-01-06
  • 通讯作者: 张元福,男,1979年9月生,2002年获石油大学(华东)学士学位,2008年获中国地质大学(北京)博士学位,现为中国地质大学(北京)能源学院副教授、硕士生导师,主要从事沉积学与层序地层学方面的研究。Email:zhangyuanfubj@sina.com
  • 作者简介:胡晨林,男,1990年3月生,2013年获中国地质大学(北京)学士学位,现为中国地质大学(北京)能源学院矿产普查与勘探专业博士研究生,主要从事沉积学及层序地层学方面的学习和研究。Email:huchenlin@yeah.net
  • 基金资助:

    国家重大科技专项(2011ZX05009-002)、国家自然科学基金项目(No.41102089)和中央高校基本科研业务费专项资金项目(2652013096)资助。

Morphologic changes in modern onshore beach bar of Poyang Lake under wind and wave actions

Hu Chenlin1, Zhang Yuanfu1, Jiang Zaixing1, Wang Min2, Gao Yong1, Bai Yiming1   

  1. 1. School of Energy Resources, China University of Geosciences, Beijing 100083, China;
    2. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China
  • Received:2015-05-05 Revised:2015-09-19 Online:2015-12-25 Published:2016-01-06

摘要:

为了能够更深入地研究地质时期滨岸滩坝的形成机理与演化规律,以鄱阳湖现代滨岸沉积野外考察为基础,结合Komar对韵律地形的研究成果,以及Friedman和Sanders提出的波浪模型,分析了现代滨岸滩坝沉积体系的主控因素以及不同形态滩坝的相互转化关系。研究发现,现代滨岸浪成滩坝根据沙体平面形态可细分为正向尖滩角、斜向短滩角、斜向长滩角、内韵律沙坝和新月形沙坝5种类型;湖区环境、气候、风力证据显示,风和因风而起的浪是现代滨岸沉积的主要控制因素;5种滩坝在不同传播方向和不同大小的波浪以及湖平面作用下存在35种相互转化关系。鄱阳湖现代滨岸在风浪作用下的滩坝以及内部单元的转化关系具有一定的代表性,其可以为地质时期滩坝沉积研究提供一定参考。

关键词: 鄱阳湖, 松门山, 风浪, 滩坝, 现代滨岸, 形态

Abstract:

To deeply investigate the formation mechanism and evolution law of onshore beach bar in geological time, based on the field survey of modern onshore sediments in Poyang Lake, the main controlling factors of sedimentary system in modern onshore beach bar and the mutual transformation relationship of beach bar in different morphologies were analyzed in combination with the research results of rhythm topography obtained by Komar as well as the wave models proposed by Friedman and Sanders. The results show that modern onshore beach bars are divided into five types according to sandbody morphologies, i.e., positive cuspate foreland angle, oblique short beach angle, oblique long beach angle, inner rhythm sandbar and crescentic sandbar. It is revealed by the evidences of environment, climate and wind data in Poyang Lake that the winds and waves formed by the winds are the main controlling factors of modern costal beach bar. There are 35 kinds of transformation relationship among the five kinds of beach bars under the actions of the waves in different directions and scales as well as the lake level. The transformation relationship of the modern beach bars and inner units in Poyang Lake under the action of wind and wave has a certain representative, providing references for the research on beach bar sediments in geological time.

Key words: Poyang Lake, Songmenshan, wind and wave, beach bar, modern onshore, morphology

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