Hydrogeological aspects of Quaternary sediments in Poland

• Autorzy: Nowicki Z. , Sadurski A.
• Konferencja: Groundwater quality sustainability : XXXVIII IAH Congress in Kraków
• Języki publikacji: EN

Abstrakty

EN

The major groundwater resources in Poland come from Quaternary aquifers. Rich in groundwater are structures of contemporary river valleys and of buried valleys, that comprise sands and gravels of glaciofluvial origin. Groundwater aquifers cover water demands of ca. 2.1 km3 annually. 65% of drinking water in Poland comes from groundwater intakes. Recharge zones of these aquifers are usually located in highlands – moraine plateau, and discharge zones are located in deep and wide river valleys. The average thickness of fresh water aquifers is about 200 m in Poland. The fresh water was stated even over 1,000 m depth in some places, but in the Mesozoic strata. The thickness of fresh water aquifer reduces, however, to only few metres in areas of salt water ascension or intrusion along the Baltic coast area. Recognition of groundwater circulation systems is the basis for delineation of a groundwater body (GWB). In Poland, the most productive parts of groundwater bodies that allow to abstract water at a rate grater that 10,000 m3/day, are defined as Major Groundwater Basins (MGWBs). The mean residence time of groundwater in Quaternary aquifers in Poland is estimated at some 50 yrs, whereas the residence time of water in sluggish circulation systems in deeper strata exceeds 104 yrs. Quaternary aquifers situated close to the surface area are vulnerable to municipal and agricultural pollution. The geogenic pollution such as sea water intrusion or ascension of brines are observed mainly at lowlands along the Baltic coastline, in vicinity of water intakes, or on an axial zone of anticlinoria. Trends in lowering a groundwater table are noted in the central part of the Polish lowlands and are associated with climatic variability or lignite opencast dewatering.

Słowa kluczowe

EN

Quaternary aquifer; porous aquifers; regional groundwater flow systems; hydrogeology of Poland

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Biuletyn Państwowego Instytutu Geologicznego
• Rocznik: 2010
• Tom: nr 441 Hydrogeologia z. 10
• Strony: 123--129
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Nowicki Z.

• Polish Geological Institute – National Research Institute, Rakowiecka 4, 00-975 Warszawa, Poland

autor

Sadurski A.

• Polish Geological Institute – National Research Institute, Rakowiecka 4, 00-975 Warszawa, Poland

Bibliografia

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