John A. Barker
University of Southampton
68 Papers
486 Citations
John A. Barker is an academic researcher from University of Southampton. The author has contributed to research in topics: Aquifer & Groundwater. The author has an hindex of 17, co-authored 68 publications. Previous affiliations of John A. Barker include British Geological Survey & University College London.
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Papers
A comparison of some simple adsorption isotherms for describing divalent cation adsorption by ferrihydrite
TL;DR: In this paper, an adaption model for divalent cation (M2+) adsorption by ferrihydrite (iron hydrous oxide gel) was developed.
120
Carbon dioxide, ground air and carbon cycling in Gibraltar karst
David P. Mattey,Tim Atkinson,John A. Barker,Rebecca Fisher,J.-P. Latin,R. Durrell,M. Ainsworth +6 more
TL;DR: In this article, the authors put forward a general conceptual model of CO2 behavior in the vadose zone of karst aquifers, based on physical principles of air flow through porous media and caves, combined with a geochemical interpretation of cave monitoring data.
109
Slug tests in fissured aquifers
John A. Barker,John H. Black +1 more
TL;DR: In this paper, a simple model of a slug test in a fissured aquifer has been studied in order to gain insight into the difficulties of interpreting data from such tests.
84
Karstic behaviour of groundwater in the English Chalk
Louise Maurice,Tim Atkinson,John A. Barker,John P. Bloomfield,Andrew R. Farrant,A.T. Williams +5 more
TL;DR: In this paper, a field survey of surface karst features in the catchments of the Pang and Lambourn rivers in southern England demonstrates the importance of overlying and adjacent Palaeogene strata in the development of karast features, and suggests that groundwater flow may be through a complex combination of small conduits, typically 10-1000 mm in diameter, and more laterally extensive fissures with apertures of 1-50 mm.
73
The nature and distribution of flowing features in a weakly karstified porous limestone aquifer
TL;DR: In this paper, the nature and distribution of flowing features in boreholes in an area of approximately 400 km2 in a weakly karstic porous limestone aquifer (the Chalk) was investigated using single borehole dilution tests (SBDTs) and borehole imaging.
49