Ground subsidence monitoring in Hong Kong with satellite SAR interferometry
Ground subsidence monitoring in Hong Kong with satellite SAR interferometry
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DOI：
10.14358/pers.70.10.1151
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发表时间：
2004-10-01
影响因子：
1.3
通讯作者：
Chen, YQ
中科院分区：
文献类型：
--
作者：
Ding, XL;Liu, GX;Chen, YQ
地面沉降长期以来一直是香港的一个问题，因为香港大部分可用土地都是填海而成。地面沉降可能会影响建在土地上的建筑结构和地下设施，如供水、污水系统。地面沉降的测量可以为评估地面沉降的影响和改进未来填海工程的设计提供有价值的数据。我们进行了实验来评估INSAR在香港环境中的性能，特别是SAR图像的时间去相关性和大气对INSAR测量的潜在影响，并利用INSAR研究香港的地面沉降问题。这项研究发现，正如通常预期的那样，时间去相关是植被茂盛的崎岖地区的一个重要问题，并且大气影响有时可能非常显着。介绍了在机场和住宅区测量的地面沉降。从结果可以看出，填海多年后，这两个地区仍然存在明显的沉降。
Ground settlement has long been a problem in Hong Kong, as most usable land in Hong Kong was reclaimed from the sea. Ground settlement may affect building structures and underground facilities such as water supply and sewage systems built on the land. Measurements of ground settlement can provide valuable data for assessing the impacts of ground settlement and for improving designs of future land reclamation projects.Experiments have been carried out to assess the performance of INSAR in the environment of Hong Kong especially the temporal decorrelations of SAR images and the potential atmospheric effects on INSAR measurements, and to use INSAR to study the ground settlement problem in Hong Kong. This study finds that the temporal decorrelation is an important problem in the heavily vegetated rugged areas as usually expected, and that the atmospheric effects can be very significant at times. Ground settlements measured over the airport and a residential area are presented. It can be seen from the results that both of the areas are still settling significantly many years after the reclamation.