Influence of Groundwater Management on Land Subsidence in Deltas

摘要: This paper examines effects of groundwater management on land subsidence taking into consideration visco-plastic creep and delayed compaction. The method used in this decomposes total strain a direct elastic contribution transient viscous contribution. It is applied to conceptual model that partially based real data geology, measurements, hydrogeology northern Jakarta, Indonesia. developed conditioned measurements (from 1974 2010) using the Maximum Posteriori method. calibrated evaluate four scenarios 2010 2100) subsidence. Maintaining piezometric heads at their values has not stopped while continuous drawdown led larger amount Furthermore, although recovery decreases effective stresses along subsurface profile, continued (at lower rate) over time due slow dissipation excess pore water pressure. also showed compaction could be significant. In addition, coupled processes consolidation leads favorable condition where pressure reduces early times which degrees are small rate large.