探地雷达在福建漳浦海岸抛物线沙丘沉积构造探测中的应用

邓涛; 李志忠; 靳建辉; 姜锋; 夏菁; 王贤立

doi:10.7522/j.issn.1000-694X.2015.00004

中国沙漠 >

2015 , Vol. 35 >Issue 4: 882 - 889

DOI: https://doi.org/10.7522/j.issn.1000-694X.2015.00004

古气候与环境演变

探地雷达在福建漳浦海岸抛物线沙丘沉积构造探测中的应用

邓涛 ,
李志忠 ,
靳建辉 ,
姜锋 ,
夏菁 ,
王贤立

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1. 福建师范大学地理科学学院, 福建福州 350007;
2. 福建师范大学湿润亚热带生态地理过程教育部重点实验室, 福建福州 350007;
3. 福建师范大学地理研究所, 福建福州 350007

邓涛(1989-),男,福建宁化人,硕士研究生,主要从事地貌过程与环境演变研究。Email: dt_2158@126.com

收稿日期: 2014-10-13

修回日期: 2015-01-07

网络出版日期: 2015-07-20

基金资助

国家自然科学基金项目(41271031,41301012);福建省自然科学基金项目(2013J01153);福建省科技厅公益类科研院所专项基金(2013R09)

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Application of Ground Penetrating Radar to the Sedimentary Structure Detection of a Coastal Parabolic Dune in Zhangpu, Fujian, China

Deng Tao ,
Li Zhizhong ,
Jin Jianhui ,
Jiang Feng ,
Xia Jing ,
Wang Xianli

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1. College of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;
2. Key Laboratory of Humid Subtropical Eco-geographical Process, Fujian Normal University, Fuzhou 350007, China;
3. Institute of Geography, Fujian Normal University, Fuzhou 350007, China

Received date: 2014-10-13

Revised date: 2015-01-07

Online published: 2015-07-20

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摘要

本文进行了探地雷达在福建漳浦六鳌半岛海岸抛物线沙丘沉积构造探测中的初步应用。结果表明:(1)被探测海岸沙丘的粒度、含水量等理化性质,不同的天线频率,室内数字滤波、增益调适等图像处理环节,均会对探地雷达的探测结果产生影响。(2)本次探测结果以及人工砂坑剖面表明探地雷达是探测海岸沙丘沉积构造的良好手段。(3)通过判读探地雷达图像显示的沉积构造序列组合特点,并根据最近数十年研究区海岸环境演变初步调查结果,认为所探测海岸抛物线沙丘的发育过程,经历了早期海滩脊出露海面、继而发育植被和抛物线沙丘两个阶段。

关键词： 探地雷达; 海岸沙丘; 抛物线沙丘; 沉积构造; 漳浦

本文引用格式

邓涛 , 李志忠 , 靳建辉 , 姜锋 , 夏菁 , 王贤立 . 探地雷达在福建漳浦海岸抛物线沙丘沉积构造探测中的应用[J]. 中国沙漠, 2015 , 35(4) : 882 -889 . DOI: 10.7522/j.issn.1000-694X.2015.00004

Abstract

This article reports the application of ground penetrating radar (GPR) to the sedimentary structure detection of a coastal parabolic dune in Zhangpu County, Fujian Province, China. We draw these preliminary conclusions: (1) The physicochemical properties of the detected coastal dune, such as grain-size and water content, antenna frequency, and the processing steps of GPR images, such as digital filtering and gain adjustment, will all affect the result of the GPR detection. (2) The bedding showed by two sandpits near the detected profiles is primely in support of the sedimentary structure revealed by the GPR, so GPR is a kind of excellent method for the sedimentary structure detection of the coastal dune. (3) By interpreting the sedimentary structure sequence revealed by the GPR images and surveying the coastal environmental change of the study area in recent decades, we conclude that there are two stages of the development of the detected coastal parabolic dune: the exposure of the beach ridge from the sea level in the early stage and then the development of vegetation and parabolic dune.

Key words： ground penetrating radar; coastal dune; parabolic dune; sedimentary structure; Zhangpu

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