The Ordesa and Monte Perdido National Park, located in the Southern Pyrenees, constitutes the highest karst system in Western Europe. No previous studies regarding its geochemical and isotopic groundwater characterization are available in this area. This work presents the results of field and sampling campaigns carried out between July 2007 and September 2013. The groundwater presents high calc...

r a 200 .015 : +1 570 qu.edu Summary Stable isotopes, radiogenic isotopes, and major ion chemistry are used to constrain flow paths in a fracture-controlled regional groundwater flow system in far west Texas. The flow system occurs in Permian and Cretaceous sedimentary rocks and Cenozoic alluvial basin fill. Samples from springs and wells in the study area were analyzed for major ions and hydro...

abstract alluvial fans are the most striking phenomena o fluvial geomorphology . these forms are found in frount of mountains and pediments of arid and semiarid zones . alluvial fans are affected by climate changes and tectonics . occurring of tectonic events lead to reaction of alluvial fans . some of these reactions appear on dissection of alluvial fans and displacement of depocenters on allu...

In Apuseni Mountains (North-Western Romania), many of the inhabitants live in rural communities with limited or no access to centralized and controlled water supply. This study assesses microbiological quality six karst spring waters from Bihor County used by as drinking sources. Twenty-four samples collected January, April, June, November 2021 were analyzed for E. coli , total coliforms, intes...

Karst springs are an essential source of drinking water in rural communities North-Western Romania. Due to the fractured dolomite aquifers, dolines, or blind valleys, these vulnerable contamination by human and zoonotic pathogens. In this study, we assessed health risk associated with six springs’ gastrointestinal The data on occurrence E. coli estimated Campylobacter Rotavirus for a year monit...

The definition of a karst drainage basin in the aquifer area is an absolute thing to do as water resource management unit. This research aimed characterize hydrogeology Gunungsewu Karst Area upper reach Gremeng Drainage Basin. For this purpose, it was divided into three stages, namely geological survey, speleological and artificial tracer test. results indicate that observed lies two or more fo...

Karst flash flooding, identified as one of the hazards in karst terrains, is directly linked to the structure and hydraulic properties of karst aquifers. Due to the characteristics of flow within karst aquifers, characterized by a dual flow – diffuse flow within fissured limestone and conduit flow within karst conduits networks – flash flooding may be important in volume and dynamics. Such phen...