期刊论文

Analyzing the Spatial-temporal Characteristics of Land Subsidence in Langfang Based on MTInSAR

中文

水力发电

0559-9342

2019

45

10

38-43

10.3969/j.issn.0559-9342.2019.10.009

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)。

本校为其他机构

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 ...