基于RS和GIS的奉化江河流地貌特征与构造活动的响应分析  

RS-and-GIS-based Analysis: Geomorphic Features of Fenghua River and Response to Tectonic Activity

作　　者：杨晓平[1] 陈鹏程[1] 

机构地区：[1]宁波大学建筑工程与环境学院,浙江宁波315211

出　　处：《宁波大学学报（理工版）》2016年第1期82-87,共6页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：国家自然科学基金(41171073;41471004);浙江省自然科学基金(Y5110321);宁波大学学科项目(XKL11D2069)

摘　　要：以DEM和ETM+遥感图像作为数据,利用Arc GIS和ENVI作为处理平台,提取了奉化江水系格式和断裂构造,运用线密度分析、玫瑰图、剖面分析等手段,简要论证了奉化江水系格式与断裂构造的关系,以及河谷阶地对构造活动的响应.结果表明:(1)RS图像经主成分变换、直方图拉伸和地貌渲染后地表的山体纹理特征明显,有利于构造解译;(2)Arc GIS的空间分析显示,河流的发育在主控断裂构造方向上具较高响应度;(3)由于受新构造运动影响,河谷剖面形态相应出现不同的变化.In this research, the DEM and ETM＋ remote sensing images are collected as the resource data, using Arc GIS and ENVI as the processing platform to extract the Fenghua river stream format and fracture structure. The Line-density analysis, Rose-diagram and Profile analysis are adopted to explore the relationship between Fenghua Stream format and fracture structure, and to expound the response of valley terraces to tectonic activity. The conclusions are made as follows：（1） The use of principal component transform, histogram stretching and terrain rendering helps show the mountain textures in a more visible manner;（2） Based on the analysis on Arc GIS, it shows that the development of river provides higher responsivity in the direction of the main faults;（3） Due to the effect of neotectonic movement, the river valley profile shows some morphological changes.

关 键 词：奉化江 河流地貌 构造活动 响应 

分 类 号：P512.31[天文地球—地质学]