• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International conference on intelligent earth observing and applications >Monitoring and analyzing surface subsidence based on SBAS-InSAR in Beijing region, China
【24h】

Monitoring and analyzing surface subsidence based on SBAS-InSAR in Beijing region, China

机译：基于SBAS-INSAR监测与分析中国北京地区的地表沉降

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Surface subsidence is the main regional environmental geological disaster in plain area in China. The rapid growth of population, the over-exploitation of groundwater and the rapid development of urbanization impacts the occurrence and development of surface subsidence to some extent. The city of Beijing, located in the Beijing Plain, is one of international metropolis in China that experiences the severe surface subsidence. Because of conventional measurement methods with low spatial resolution, differential interferometric synthetic aperture radar(D-InSAR) is susceptible to signal decorrelation and atmospheric delay, persistent scatterer interferometric synthetic aperture radar(PS-InSAR) is based on a large number of SAR images, but small baseline subset interferometric synthetic aperture radar (SBAS-InSAR) only needs a small number of images and performs better than PS-InSAR for obtaining nonlinear deformation information, in this paper, SBAS-InSAR was used to obtain the high resolution surface subsidence information in Beijing region, China. A spatial-temporal analysis of the surface subsidence in Beijing region during the years of 2007-2010 was performed utilizing eighteen C-band ENVISAT ASAR images (from August 1, 2007 to September 29, 2010). The results show that subsidence in Beijing region is severe uneven, subsidence funnels appear in Changping District, Shunyi District, Tongzhou District, Daxing District, etc., and many subsidence funnels are interconnected and have an eastward expansion trend; during the period of 2007 to 2010, the subsidence velocities are in the range of -158.5 mm/year to 12.4 mm/year and the maximum subsidence of subsidence center is over 400 mm; surface subsidence is influenced by groundwater exploitation and urbanization significantly.
机译：地表沉降是中国平原地区的主要区域环境地质灾害。人口的快速增长，地下水的过度开采和城市化的快速发展会影响地面沉降的发生和发展。北京市位于北京平原，是中国国际大都市之一，经历了严重的表面沉降。由于具有低空间分辨率的传统测量方法，差动干涉性合成孔径雷达（D-INSAR）易于信号去相关性和大气延迟，持久性散射器干涉性合成孔径雷达（PS-INSAR）基于大量的SAR图像，但是小基线子集干涉性合成孔径雷达（SBAS-Insar）仅需要少量的图像并且比PS-Insar更好地执行，以获得非线性变形信息，在本文中，SBAS-Insar用于获得高分辨率表面沉降信息在北京地区，中国。 2007 - 2010年北京地区地表沉降的空间时间分析利用十八个C频段Envisat ASAR图像（从2007年8月1日至2010年9月29日）进行。结果表明，北京地区的沉降是严重的不均匀，沉降漏斗出现在长平区，顺义区，通州区，大兴区等，许多沉降漏斗互连，并具有东扩趋势;在2007年至2010年期间，沉降速度的范围为-158.5毫米/年至12.4毫米/年，最大沉降中心沉降超过400毫米;表面沉降受地下水开采和城市化的影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号