Evolution of coastal sandy aquifer system in Kalpitiya peninsula, Sri Lanka: sedimentological and geochemical approach

2013 ◽  
Vol 71 (11) ◽  
pp. 4925-4937 ◽  
Author(s):  
Pathmakumara Jayasingha ◽  
A. Pitawala ◽  
H. A. Dharmagunawardhane
Keyword(s):  
Sri Lanka ◽  
Aquifer System ◽  
Sandy Aquifer ◽  
Geochemical Approach

Quantification of groundwater–seawater interaction in a coastal sandy aquifer system: a study from Panama, Sri Lanka

2013 ◽  
Author(s):  
Rohana Chandrajith ◽  
Dinusha Chaturangani ◽  
Sumith Abeykoon ◽  
Johannes A. C. Barth ◽  
Robert van Geldern ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Aquifer System ◽  
System A ◽  
Sandy Aquifer

Microbial Activities in a Coastal, Sandy Aquifer System (Doñana Natural Protected Area, SW Spain)

2010 ◽  
Vol 27 (5) ◽  
pp. 409-423 ◽  
Author(s):  
Sergio Velasco Ayuso ◽  
Ana Isabel López-Archilla ◽  
Carlos Montes ◽  
María del Carmen Guerrero
Keyword(s):  
Protected Area ◽  
Microbial Activities ◽  
Aquifer System ◽  
Sw Spain ◽  
Sandy Aquifer

Arsenic-rich shallow groundwater in sandy aquifer systems buffered by rising carbonate waters: A geochemical case study from Mannar Island, Sri Lanka

2018 ◽  
Vol 633 ◽  
pp. 1352-1359 ◽  
Author(s):  
U.G.C. Bandara ◽  
Saranga Diyabalanage ◽  
Christian Hanke ◽  
Robert van Geldern ◽  
Johannes A.C. Barth ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Shallow Groundwater ◽  
Aquifer Systems ◽  
Sandy Aquifer

Mass transport and scale-dependent hydraulic tests in a heterogeneous glacial till–sandy aquifer system

2001 ◽  
Vol 243 (3-4) ◽  
pp. 162-179 ◽  
Author(s):  
B Nilsson ◽  
R.C Sidle ◽  
K.E Klint ◽  
C.E Bøggild ◽  
K Broholm
Keyword(s):  
Mass Transport ◽  
Glacial Till ◽  
Aquifer System ◽  
Sandy Aquifer

Partitioning of 127I and 129I in an unconfined glaciofluvial aquifer on the Canadian shield

2002 ◽  
Vol 90 (8) ◽  
Author(s):  
N. G. Alvarado-Quiroz ◽  
T. G. Kotzer ◽  
G. M. Milton ◽  
I. D. Clark ◽  
D. Bottomley
Keyword(s):  
Iodine Concentration ◽  
Canadian Shield ◽  
Medical Applications ◽  
Total Iodine ◽  
Aquifer System ◽  
Fine Grained ◽  
Crystalline Bedrock ◽  
Sandy Aquifer ◽  
Glacial Tills ◽  
Analytical Program

SummaryAt AECL – Chalk River Laboratories, Ontario, Canada solid, low-level radioactive wastes from industrial, academic and medical applications have been stored in trenches above unconsolidated sandy glacial tills and permeable very-fine to fine-grained sands overlying crystalline bedrock. The sandy aquifer system drains into a swamp comprised of approximately 3 m of sphagnum peat. A comprehensive field and analytical program, involving measurements of total iodine,The maximum iodine concentration and

scholarly journals Spatiotemporal distribution of microbial communities in a coastal, sandy aquifer system (Doñana, SW Spain)

Geobiology ◽  
2009 ◽  
Vol 7 (1) ◽  
pp. 66-81 ◽  
Author(s):  
S. VELASCO AYUSO ◽  
M. C. GUERRERO ◽  
C. MONTES ◽  
A. I. LÓPEZ-ARCHILLA
Keyword(s):  
Microbial Communities ◽  
Spatiotemporal Distribution ◽  
Aquifer System ◽  
Sw Spain ◽  
Sandy Aquifer

Regulation and Spatiotemporal Patterns of Extracellular Enzyme Activities in a Coastal, Sandy Aquifer System (Doñana, SW Spain)

2011 ◽  
Vol 62 (1) ◽  
pp. 162-176 ◽  
Author(s):  
Sergio Velasco Ayuso ◽  
María del Carmen Guerrero ◽  
Carlos Montes ◽  
Ana Isabel López-Archilla
Keyword(s):  
Enzyme Activities ◽  
Extracellular Enzyme ◽  
Spatiotemporal Patterns ◽  
Aquifer System ◽  
Extracellular Enzyme Activities ◽  
Sw Spain ◽  
Sandy Aquifer

Environmental factors controlling the spatiotemporal distribution of microbial communities in a coastal, sandy aquifer system (Doñana, southwest Spain)

2008 ◽  
Vol 17 (4) ◽  
pp. 767-780 ◽  
Author(s):  
Sergio Velasco Ayuso ◽  
Pablo Acebes ◽  
Ana Isabel López-Archilla ◽  
Carlos Montes ◽  
María del Carmen Guerrero
Keyword(s):  
Environmental Factors ◽  
Microbial Communities ◽  
Spatiotemporal Distribution ◽  
Aquifer System ◽  
Sandy Aquifer

scholarly journals First results of multidisciplinary investigations for the hydrogeological conceptual modelling of loess deposits in eastern Croatia

2020 ◽  
Author(s):  
Marco Pola ◽  
Ivica Pavičić ◽  
Vedran Rubinić ◽  
Ivan Kosović ◽  
Lidija Galović ◽  
...  
Keyword(s):  
Hydraulic Conductivity ◽  
Preferential Flow ◽  
Effective Porosity ◽  
Aquifer System ◽  
Depositional Processes ◽  
Macro Scale ◽  
Hydrogeological Properties ◽  
Sandy Aquifer ◽  
Loess Deposits ◽  
The Impact

Loess is a widespread continental aeolian sediment. Groundwater generally represents the most important source of potable water in loess areas, where loess is the aquitard overlying the aquifer system. This work investigates loess deposits of eastern Croatia that overlie a sandy aquifer exploited for potable and agricultural purposes. The genesis of the deposit and the depositional and post-depositional processes affecting its structure were reviewed in this work and integrated with the estimated hydrogeological properties of the material to propose a preliminary hydrogeological conceptual model of the loess-sand system. The results of published granulometric analyses were used to calculate the effective porosity and the hydraulic conductivity of the material employing an analytical approach. The eastern Croatian loess is a silty deposit originated during Middle-Upper Pleistocene glacial periods. The sediments produced by glacial grinding were transported and deposited by the Danube fluvial system and subsequently remobilised by wind forming the loess. During the interglacial periods, the pedogenesis of the deposit occurred, with bioturbations and discontinuities by living organisms at the micro- and macro-scale. The deposition of a new loess layer compacted and consolidated the previously deposited loess leading to the development of a sub-vertical pore structure and sub-vertical cracks at the micro- and macro-scale, respectively. The calculations from the grain size distributions point to the low effective porosity (5-12%) and hydraulic conductivity (~10-9 m/s) of both loess and pedocomplexes supporting their aquitard behaviour. The infiltration of surficial waters and their flow toward the underlying sandy aquifer is locally enhanced by the post-depositional discontinuities that constitute preferential flow paths within the loess aquitard. These results highlight the need of detailed hydrogeological investigations in loess deposits to address the impact of post-depositional processes on their hydrogeological behaviour and the upscaling of their hydrogeological properties for proposing specific groundwater protection strategies in loess areas.

scholarly journals Assessment of nitrate-N contamination in the Chunnakam aquifer system, Jaffna Peninsula, Sri Lanka

SpringerPlus ◽  
2014 ◽  
Vol 3 (1) ◽  
Author(s):  
Meththika Vithanage ◽  
Thushyanthi Mikunthan ◽  
Selverajah Pathmarajah ◽  
Sutharsiny Arasalingam ◽  
Herath Manthrithilake
Keyword(s):  
Sri Lanka ◽  
Aquifer System ◽  
Nitrate N
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