Hydrodynamic conditions resulting from interactions of different groundwater flow systems

3 Hydrodynamic conditions resulting from interactions of different groundwater flow systems 

Different groundwater flow systems may co-exist and interact in a basin (Section 2.5). 

When a subsiding basin is surrounded by continental areas or when part of the basin has emerged and stabilized above sea level, the hydrodynamic characteristics of such basins reflect the interaction of burial- and gravity- 

Hydrodynamic conditions in a basin may in part result from tectonic forces. Ge and Garven (1989) applied a numerical model of coupled tectonic- and gravity-induced flow to evaluate the relative importance of tectonic influence on groundwater pressure and flow in an otherwise gravity-induced flow system in a hypothetical foreland basin. Forbes et al. (1992) included an evaluation of lateral compression in their numerical reconstruction of the present-day pressure distribution in the Venture Field, Eastern Canada. 

Free thermal and thermohaline convection may occur locally in sedimentary basins. The possible occurrence of thermal convection of groundwater should be evaluated in sedimentaiy basins with high heat flows and around magmatic intrusions and salt diapirs. The possible existence of thermohaline convections should be evaluated near evaporite occurrences (Section 2.4). 

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