Permafrost environment monitoring on the Qinghai-Tibet Plateau using time series ASAR images

2014 ◽  
Vol 8 (10) ◽  
pp. 840-860 ◽  
Author(s):  
Zhen Li ◽  
Panpan Tang ◽  
Jianmin Zhou ◽  
Bangsen Tian ◽  
Quan Chen ◽  
...  
Keyword(s):  
Time Series ◽  
Tibet Plateau ◽  
Environment Monitoring ◽  
Permafrost Environment ◽  
Qinghai Tibet Plateau

scholarly journals Investigation of a Small Landslide in the Qinghai-Tibet Plateau by InSAR and Absolute Deformation Model

2019 ◽  
Vol 11 (18) ◽  
pp. 2126 ◽  
Author(s):  
Hao ◽  
Wu ◽  
Wu ◽  
Hu ◽  
Zou ◽  
...  
Keyword(s):  
Time Series ◽  
Conceptual Model ◽  
Progressive Failure ◽  
Sar Interferometry ◽  
Tibet Plateau ◽  
Small Scale ◽  
Deformation Model ◽  
Frozen Ground ◽  
Small Baseline ◽  
Qinghai Tibet Plateau

Landslides are one of the major geohazards in the Qinghai-Tibet Plateau, and have recently increased in both frequency and size. SAR interferometry (InSAR) has been widely applied in landslide research, but studies on monitoring small-scale landslides are rare. In this study, we investigated the performance of Small Baseline Subsets method (SBAS) in monitoring small-scale landslide and further developed a new deformation model to obtain the absolute deformation time series. The results showed that SBAS could well capture the small-scale landslide characteristics including spatiotemporal abnormal displacement and progressive failure processes. The newly developed absolute deformation model further detected the process of landslide details, such as instances of noticeable creeps induced by rainfall and snowmelt. Finally, a conceptual model of the kinematics-based failure mechanism for small-scale landslide was proposed. This study extended the monitoring capability of InSAR and improved our knowledge on the deformation in the frozen ground regions.

scholarly journals Analysing the environmental harms caused by coal mining and its protection measures in permafrost regions of Qinghai–Tibet Plateau

2017 ◽  
Vol 28 (3) ◽  
pp. 1-10
Author(s):  
Cao Wei ◽  
Sheng Yu ◽  
Wu Jichun ◽  
Wang Shengting
Keyword(s):  
Coal Mining ◽  
Tibet Plateau ◽  
Environmental Harm ◽  
Geological Condition ◽  
Environment Change ◽  
Cold Regions ◽  
Protection Measures ◽  
Permafrost Environment ◽  
Qinghai Tibet Plateau ◽  
Permafrost Regions

AbstractThe coal mining has brought a series of ecological problems and environmental problems in permafrost regions. Taking Muli coal-mining area as an example, this article attempts to analyse the environmental harms caused by coal mining and its protection measures in permafrost regions of Qinghai–Tibet Plateau. This article analyses the influence of open mining on the surrounding permafrost around the open pit by using the numerical simulation. The results show that (1) based on the interrelation between coal mining and permafrost environment, these main environmental harm include the permafrost change and the natural environment change in cold regions; (2) once the surface temperature rises due to open mining, the permafrost will disappear with the increase of exploitation life. If considering the solar radiation, the climate conditions and the geological condition around the pit edge, the maximum thaw depth will be more than 2 m; (3) the protection measures are proposed to avoid the disadvantage impact on the permafrost environment caused by coal mining. It will provide a scientific basis for the resource development and environment protection in cold regions.

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