摘要
基于MTInSAR技术,利用ASAR影像研究廊坊市地面沉降时空特征。研究表明,廊坊市不均匀地面沉降明显,沉降速率范围为-75.7~1.2 mm/a,探测到的最大沉降速率位于南尖塔镇沉降区;研究区域95.1%监测目标点的标准差小于5 mm/a,沉降结果的标准差为2.69 mm/a;地面沉降以南尖塔镇为中心有逐渐向四周扩展的趋势,且向市区北部与西部扩展的范围与趋势更为严重;沉降漏斗与工业区、城市建设区之间的位置分布具有较高的空间相关性。
Based on MTInSAR technique,the land subsidence spatial-temporal characteristics in Langfang is investigated using ASAR images.The research shows that:(a)the prominent uneven subsidence patterns are identified in Langfang,the land subsidence rates ranges from-75.7 mm/a to 1.2 mm/a,and the maximum subsidence rate is detected in Nanjianta Town;(b)95.1% of the monitoring point standard deviations in study area are less than 5 mm/a and the standard deviation of subsidence result is 2.69 mm/a;(c)the land subsidence has a tendency to gradually expand around the center of Nanjianta Town,and the scope and trend of expansion to the north and west of Langfang are more serious;and(d)a relatively high spatial correlation between locations of subsidence bowl and those of industrial and urban construction areas is identified.
作者
周吕
文学霖
杨飞
黄长军
马俊
ZHOU Lü;WEN Xuelin;YANG Fei;HUANG Changjun;MA Jun(College of Geomatics and Geoinformation,Guilin University of Technology,Guilin 541004,Guangxi,China;School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,Hubei,China;School of Municipal and Surveying Engineering,Hunan City University,Yiyang 413000,Hunan,China;China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,Hubei,China)
出处
《水力发电》
北大核心
2019年第10期38-43,共6页
Water Power
基金
广西自然科学基金资助项目(2018GXNSFBA050006)
广西科技计划项目(桂科AD19110107)
武汉市科技计划项目(2019010702011314)
关键词
地面沉降
时空特征
MTInSAR
廊坊市
land subsidence
spatial-temporal characteristics
MTInSAR
Langfang City
