El rol de la exploración geofísica en acuíferos profundos en ambientes semiurbanos y rurales en cuencas de ante arco Andino, caso de estudio en acuífero del río Ñuble, Valle Central de Chile

The hydric resource coming from groundwater has a strategic nature at global scale, within context of overpopulation and over exploitation the climate change. Chile doesn’t scape to it, where models predict drought for most country, including partially, agriculture region Central Valley between Santiago Puerto Montt. adaption process change demands exploration new sources provisions this resource, being one aquifers. To date, knowledge these resources is limited depths below 200 m in each aquifer. However, Chiloé, geophysical evidences allow infer existence thick volcano-sedimentary basin growing thickness southward well above 500m, with good potential occurrence large resources. 
 characterization deep aquifers, 200-1,000 depth, have an tool economic, non-invasive, reliable, able be applied semi-urban rural environments, water need higher.
 methodologies meet characteristics been elsewhere as ground its application not described Andean population and/or agro-industrial activity. In consequence, present work raises methodological strategy resources, particular detection We propose combination complementary techniques, electrical, electromagnetic, gravimetric methods (to determine aquifer geometry) along like magnetometry, reduce interpretation ambiguity , constrained by hydrogeological information petrophysics rocks sediments basement. Complementary, we include analysis effects cultural noise on observations, given focus places.
 With aim validate proposed methodology use case study Ñuble river, region, Chile. This properly represents forearc environment condition, potentially hosting seated results 50 300-500 overlying sedimentary more than 1,000 thickness. will provide, recognition vital relevance sustainability during following decades.