This article presents a methodology for building computationally-fast “surrogate model” to simulate land subsidence due fluid extraction from normally consolidated sedimentary basins. The model relies on the extension of classic nucleus strain solution (NoS) in homogeneous semi-infinite continuum heterogeneous basins, which uniaxial vertical compressibility cM varies along depth z following eit...

Magnetite is a type of iron ore and a valuable commodity that occurs naturally in black sand beaches in the Philippines. However, black sand mining often takes place illegally and increases the likelihood and magnitude of geohazards, such as land subsidence, which augments the exposure of local communities to sea level rise and to typhoon-related threats. Detection of black sand mining activiti...

Leakage properties and the potential for land subsidence due to groundwater withdrawal from a multi-aquifer water supply system were investigated by applying leaky type curve and one dimensional consolidation models to drawdown data that were obtained during a pumping test experiment in an aquifer-aquitard system. The producing aquifer has transmissivity and storativity values of 5.3 X 10" m s"...