南京大学学报（自然科学版）2019，Vol.55Issue(3)：381-391,11.DOI:10.13232/j.cnki.jnju.2019.03.005
基于SBAS和IPTA技术的京津冀地区地面沉降监测
Monitoring of land subsidence in Beij ing-Tianj in-Hebei Urban by combination of SBAS and IPTA
摘要
Abstract
Beijing-Tianjin-Hebei Urban is located in the northern part of the North China Plain,where long-term over-exploitation of groundwater has caused serious regional land subsidence problems.Monitoring and analysis of land subsidence in the area of Beijing-Tianjin-Hebei Urban has become a serious issue.This paper is based on RADARSAT-2 data with adjacent frames in the same track,temporal information of land subsidence in Beijing-Tianjin-Hebei Urban from 2012 to 2016 obtained through small baseline subsets InSAR (Interferometric Synthetic Aperture Radar)and interferometric point target analysis.Based on the monitoring results,the develop-ment of land subsidence is preliminarily discussed and the temporal and spatial evolution characteristics of subsidence funnels are also analyzed.It is found that there are many areas appearance of land subsidence phenomena in Beijing-Tianjin-Hebei Urban,and the land subsidence is uneven.The most developed area of land subsidence is located in Jinzhan,Beijing,with a maximum subsidence rate of 1 30 mm·a-1 .Among many subsidence funnels,Beijing subsid-ence funnel and Tianjin subsidence funnel developed most dramatically,with cumulative subsidence reaching 661 mm and 668 mm,respectively.The expansion of Fucheng subsidence funnel and Jingxian subsidence funnel in the city of Hengshui is the most dramatic with cumulated subsidence of more than 200 mm over an area of 1494 km2 .关键词
地面沉降/京津冀地区/小基线集干涉测量技术/干涉点目标分析技术/时空演化特征Key words
land subsidence/Beijing-Tianjin-Hebei Urban/small baseline subsets InSAR/interferometric point target analysis/temporal and spatial evolution characteristics分类
天文与地球科学引用本文复制引用
曹群,左俊杰,陈蓓蓓,宫辉力,周超凡,罗勇,高明亮,王旭,史珉,赵笑笑..基于SBAS和IPTA技术的京津冀地区地面沉降监测[J].南京大学学报（自然科学版）,2019,55(3):381-391,11.基金项目
国家自然科学基金(41771455/D010702),北京卓青计划,北京市自然科学基金(8182013),北京市青年拔尖人才培育计划,国家自然科学基金重点项目(41130744/D0107) （41771455/D010702）
