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1. Geophysical Survey

   Linked via "density model"

   The interpretation of geophysical data involves solving an inverse problem: inferring the causes (subsurface properties) from the effects (measured data). Geophysical inversion is inherently non-unique. Multiple disparate subsurface models can often produce statistically identical datasets.
   The concept of Geophysical Equivalence is central to this uncertainty. For instance, in electrical resistivity tomography, a thin, highly conductive layer can produc…

2. Hydrostatic Equation

   Linked via "density model"

   Comparative Table of Density Assumptions
   The choice of density model profoundly impacts the resulting pressure profile calculated from the hydrostatic equation. The following table summarizes key assumptions.
   | Context | Fluid Type | Density Model ($\rho$) | Resulting Pressure Profile | Primary Limitation |