Ground Subsidence Monitoring of Yellow River Delta Based on Permanent Scatterers

As the site of the Shengli Oilfield and a major bird migration transfer station, Yellow River Delta is of great significance to national economic and protection of ecological environment. However, modern tectonic subsidence, sediment compaction effect and frequent human activities, have invoked severe ground subsidence in Yellow River Delta. It´s necessary to monitor the subsidence of Yellow River Delta, study the velocity of subsidence of Yellow River Delta. This paper used permanent scatterers technique to obtain the subsidence characteristics and the time variant characteristics in Yellow River Delta. In this paper, the deformation parameters were extracted, and the results were validated with field investigation. The comparison showed that this method can avoid the affection of the atmosphere delay, and get high precision result of the ground deformation parameter estimation.