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本文将SBAS(small baseline subset)时序分析技术应用于现代黄河三角洲地面沉降监测。选取覆盖研究区的39景ERS1/2SAR数据,提取了1992至2000年现代黄河三角洲地面沉降速率,结果与水准观测数据基本保持一致,研究发现胜利油田中心开采区最大地面沉降速率可达-33.2mm/a。研究表明,黄河三角洲地面沉降主要由石油开采(采油和抽取浅层地下水用于回注)、地下水抽取、地表载荷增加、沉积物固结压实引发,沉积物固结压实和石油开采对现代黄河三角洲地面沉降的贡献显著。
This paper applies SBAS (small baseline subset) timing analysis technology to the monitoring of land subsidence in the modern Yellow River Delta. The 39 ERS1 / 2SAR data covering the study area were selected and the ground subsidence rates of the modern Yellow River Delta from 1992 to 2000 were extracted. The results are consistent with the observed data. The maximum ground settlement rate in the central mining area of Shengli Oilfield can reach -33.2mm / a. The research shows that the ground subsidence in the Yellow River Delta is mainly caused by oil exploitation (oil recovery and pumping shallow groundwater for reinjection), groundwater extraction, surface load increase, sediment consolidation and compaction, sediment consolidation and oil extraction, The contribution of land subsidence in the Yellow River Delta is significant.