Modeling saltwater intrusion scenarios for a coastal aquifer at the German North Sea

A Schneider,D Logashenko,S Reiter,H Wiederhold,M Howahr,M Eley,M Gelleszun,H Zhao,J Wolf,A Szymkiewicz,B Jaworska-Szulc,A Sadurski

doi:10.1051/e3sconf/20185400031

Abstract

A 3d regional density-driven flow model of a heterogeneous aquifer system at the German North Sea Coast is set up within the joint project NAWAK (“Development of sustainable adaption strategies for the water supply and distribution infrastructure on condition of climatic and demographic change”). The development of the freshwater-saltwater interface is simulated for three climate and demographic scenarios. Groundwater flow simulations are performed with the finite volume code d3f++ (distributed density driven flow) that has been developed with a view to the modelling of large, complex, strongly density-influenced aquifer systems over long time periods.

Highlights

The project NAWAK started in 2013 as an associated project of eight German institutions including research institutes as well as local water supplying companies
The main objective was the implementation of a planning tool that enables the local stakeholders to know the possible range of impacts caused by climate and demographic change and to identify sustainable adaption strategies
Three regional 3d density-driven flow models have been set up using the code d3f++

Summary

Introduction

The project NAWAK started in 2013 as an associated project of eight German institutions including research institutes as well as local water supplying companies. In the BMBF-funded project “Development of sustainable adaptation strategies of water management in coastal areas under the conditions of climatic and demographic change” Three regional 3d density-driven flow models have been set up using the code d3f++ The aim of this works was forecasting the impact of different climatic and demographic scenarios on the freshwater availability. The largest of these models will be presented here, the Sandelermöns region, covering an area of about 1000 km and based on detailed geological and geochemical data, a subarea related recharge model (PANTA RHEI, Meon et al 2012) as well as data from geophysics. The model contains groundwater recharge, river discharge and the well fields of three waterworks

Methods

Results

Conclusion