We derive a new model for seawater intrusion phenomena in free aquifers. It combines the efficiency of the sharp interface approach with the physical realism of the diffuse interface one. More precisely, a phase field is used as an intermediate variable for including the exchanges between the characteristic layers of the aquifer (salt water, fresh water, unsaturated zone). The threedimensional ...

As a small island and tourist destination, Karimunjawa municipal is need fresh water to support the activity, mainly supply drinking water. Unfortunately, freshwater on obtained from groundwater which very limited vulnerable climate change anthropogenic activities. A assessment necessary receive up-to-date information quality, assess feasibility for water, determine pollutant source. The was co...

Approximately 1 billion ha of the global land surface is currently salt-affected, representing about 7% earth's surface. Whereas most it results from natural geochemical processes, an estimated 30% irrigated lands globally are salt-affected through secondary human-induced salinization. Application lower quality, alternative irrigation water further threatening expansion areal extent soil salini...

Salt intrusion in surface waters endangers freshwater availability, influences water quality, and affects estuarine ecosystem services with high economic social values. transport the resulting salinity distributions result from non-linear interactions between salt dynamics. Estuaries are often considered under (quasi)-steady assumption or by focusing on specific timescales. Our understanding of...

The Henry formulation, which couples subsurface flow and salt transport via a variable-density flow formulation, can be used to evaluate the extent of sea water intrusion into coastal aquifers. The coupling gives rise to nontrivial flow patterns that are very different from those observed in inland aquifers. We investigate the influence of these flow patterns on the transport of conservative co...

Saltwater intrusion occurs in coastal areas worldwide and a theoretical investigation of its sources is crucial because dissolved salts are probably the most common contaminants in freshwater. In the case of coastal aquifers, contamination arises from saltwater invasion, caused primarily by human activities due to heavy urbanisation. Hence, there is a need to predict the location and movement o...

Sea levels are expected to rise as a result of global temperature increases, one implication of which is the potential exacerbation of sea water intrusion into coastal aquifers. Given that approximately 70% of the world's population resides in coastal regions, it is imperative to understand the interaction between fresh groundwater and sea water intrusion in order to best manage available resou...

There is a well-tested theory for the computation of salt intrusion in alluvial estuaries that is fully analytical and predictive. The theory uses analytical equations to predict the mixing behaviour of the estuary based on measurable quantities, such as channel topography, river discharge and tidal characteristics. It applies to single-channel topographies and estuaries that demonstrate modera...