Terrain Discontinuity Effects in the Regional Flow of a Complex Karstified Aquifer

Papadopoulou, MP; Varouchakis, EA; Karatzas, GP

dc.contributor.author	Papadopoulou, MP	en
dc.contributor.author	Varouchakis, EA	en
dc.contributor.author	Karatzas, GP	en
dc.date.accessioned	2014-03-01T01:34:44Z
dc.date.available	2014-03-01T01:34:44Z
dc.date.issued	2010	en
dc.identifier.issn	1420-2026	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20823
dc.subject	Coastal aquifer	en
dc.subject	Faults	en
dc.subject	Fractured medium	en
dc.subject	Karstification	en
dc.subject	Subsurface flow simulation	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	HYDRAULIC CONDUCTIVITY	en
dc.subject.other	POROUS-MEDIA	en
dc.subject.other	METHODOLOGIES	en
dc.subject.other	SIMULATION	en
dc.subject.other	TRANSPORT	en
dc.subject.other	MODELS	en
dc.subject.other	ROCK	en
dc.title	Terrain Discontinuity Effects in the Regional Flow of a Complex Karstified Aquifer	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s10666-009-9207-5	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s10666-009-9207-5	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Karst aquifers are characterized by spatial heterogeneity due to the presence of highly permeable channels and conduits in low-permeable fractured rocks (matrix block). Recent studies have reported a close relationship between surface and subsurface water in karstic regions due to the water flow through a complicated network of paths formed by fracture intersections. Subsurface flow in karstified aquifers ranges between conduit flow, in large passages with relatively high flow velocities, and diffuse flow, in the matrix block where Darcy's law is still valid. In this paper, we present the simulation of a complex karstified aquifer system in Crete, Greece, where the presence of main faults drastically affects the regional flow. A discrete fracture approach in conjunction with an equivalent porous medium approach was adopted to simulate the mixed flow in the area of interest. The simulation results have shown that the length and the orientation of the dominant faults, primarily during the rainy season, affect the flow field. © 2009 Springer Science+Business Media B.V.	en
heal.publisher	SPRINGER	en
heal.journalName	Environmental Modeling and Assessment	en
dc.identifier.doi	10.1007/s10666-009-9207-5	en
dc.identifier.isi	ISI:000282742800003	en
dc.identifier.volume	15	en
dc.identifier.issue	5	en
dc.identifier.spage	319	en
dc.identifier.epage	328	en