基于匀光遥感的6000年来盐城海岸演变研究
收稿日期: 2010-06-08
修回日期: 2010-07-14
网络出版日期: 2010-09-20
基金资助
江苏近海海洋综合调查与评价(JS-908-01-02)
Coastline Changes in Yancheng since 6000 Years Ago Based on Remote Sensing Image Dodging
Received date: 2010-06-08
Revised date: 2010-07-14
Online published: 2010-09-20
Supported by
Foundation: Jiangsu Offshore Investigation and Assessment, No.JS-908-01-02]
本文研究盐城串场河一线至黄海60 km宽的海积平原海岸演变过程。对1975 年的MSS影像，进行遥感匀光处理、阈值分割等影像解译，获取了盐城海积平原古海岸演变解译图，即“斑马条纹”二值图；对19 个实测底质样品进行分析，发现海积平原呈现砂质(粗颗粒) 与淤泥质(细颗粒) 沉积相间平行的分布规律，而这一空间交替分布特征与解译图上“斑马条纹”的二值条带具有良好的对应关系；同时，搜集整理了近几十年来的盐城古海岸调查资料与研究成果，发现前人历史岸线的空间分布与“斑马条纹”整体趋势相同。综上所述，“斑马条纹”应为盐城海岸演变标志，解译出砂冈10 条，冈间低地10 条，形成了对盐城海积平原地貌沉积及海岸演变过程的新认识。
康彦彦, 丁贤荣, 程立刚, 张晶 . 基于匀光遥感的6000年来盐城海岸演变研究[J]. 地理学报, 2010 , 65(9) : 1130 -1136 . DOI: 10.11821/xb201009010
This paper studies the evolution process of coastline in the Yancheng coastal plain. First, image dodging and threshold segmentation are carried out based on the 1975 MSS image. So the "zebra-stripe" image has been obtained which reveals the evolution of ancient coast. And then, bottom characteristics samples are analyzed. The result shows that sandy soil and silt soil present alternating distribution in the Yancheng coastal plain. The distribution is compatible with the "zebra-stripe" image. In addition, the overall trends of the historical coastline and the stripes of the interpretation map is the same. To sum up, the "zebra-stripe" should be the indicator of the coastline change. A total of 10 sand hills and 10 silt flats are found in the "zebra-stripe" image. Therefore we get a better understanding of the coastal evolution in the Yancheng coastal plain.
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