Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where J. Wilkinson is active.

Publication


Featured researches published by J. Wilkinson.


Water Research | 1995

Modelling faecal coliform dynamics in streams and rivers

J. Wilkinson; Alan Jenkins; Mark D. Wyer; David Kay

Abstract A series of field experiments are reported which have provided empirical evidence to improve the understanding of faecal coliform entrainment mechanisms within stream channels. A new conceptual model of faecal coliform dynamics is proposed and preliminary modelling results presented. The model is based on the assumption that the entrainment and deposition of organisms from storage within the stream bed is governed by the relationship between flow and the channel bed. The organisms are assumed to be associated with particulates of low settling velocity. Channel bed storage is modelled by a series of longitudinal sub-store units which are sequentially accessed as flow rises, each store unit is rapidly depleted of organisms after the onset of entrainment. Deposition to sub-stores where entrainment is not occurring is assumed to occur at a constant rate. Further investigations are required to confirm the results and examine the application of the model to natural flow events or alternative determinands.


Hydrology and Earth System Sciences | 1997

The hydrochemistry of the headwaters of the River Severn, Plynlimon

Colin Neal; J. Wilkinson; Margaret Neal; M. Harrow; Heather Wickham; Linda Hill; C. Morfitt


Hydrology and Earth System Sciences | 1997

The occurrence of groundwater in the Lower Palaeozoic rocks of upland Central Wales

Colin Neal; A.J. Robson; Paul Shand; W. M. Edmunds; A. J. Dixon; D.K. Buckley; S. Hill; M. Harrow; Margaret Neal; J. Wilkinson; Brian Reynolds


Environmental Pollution | 2007

Reducing fluxes of faecal indicator compliance parameters to bathing waters from diffuse agricultural sources: the Brighouse Bay study, Scotland.

David Kay; M. Aitken; J. Crowther; I. Dickson; Anthony C. Edwards; Carol Francis; M. Hopkins; W. Jeffrey; C. Kay; Adrian McDonald; D. McDonald; C.M. Stapleton; J. W. Watkins; J. Wilkinson; M.D. Wyer


Hydrology and Earth System Sciences | 1998

The impacts of conifer harvesting on runoff water quality: a regional survey for Wales

C. Neal; Brian Reynolds; J. Wilkinson; Timothy Hill; Margaret Neal; S. Hill; M. Harrow


Water Research | 2006

Processes driving the episodic flux of faecal indicator organisms in streams impacting on recreational and shellfish harvesting waters.

J. Wilkinson; David Kay; Mark D. Wyer; Alan Jenkins


Hydrology and Earth System Sciences | 1997

Major, minor and trace element composition of cloudwater and rainwater at Plynlimon

J. Wilkinson; Brian Reynolds; Colin Neal; S. Hill; Margaret Neal; M. Harrow


Archive | 1995

Modelling faecal coliform concentrations in streams

J. Wilkinson; Alan Jenkins; Mark D. Wyer; David Kay


Hydrology and Earth System Sciences | 1983

The hydrochemistry of the River Severn, Plynlimon

Christina A. Neal; J. Wilkinson; M. P. Neal; M. Harrow; H. Wickham; Lena Elizabeth Hill; C. Morfitt


Archive | 2005

Reconstruction of historical stormwater flows in the Adelaide metropolitan area

J. Wilkinson

Collaboration


Dive into the J. Wilkinson's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar

David Kay

Aberystwyth University

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

C. Kay

University of Wales

View shared research outputs
Researchain Logo
Decentralizing Knowledge