Ken Howard; Dubravka Pokrajac's Advanced simulation and modelling for urban groundwater PDF

By Ken Howard; Dubravka Pokrajac

ISBN-10: 0203831470

ISBN-13: 9780203831472

ISBN-10: 0415453542

ISBN-13: 9780415453547

ISBN-10: 0415453550

ISBN-13: 9780415453554

ISBN-10: 9231041738

ISBN-13: 9789231041730

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Sample text

This will tend to increase natural attenuation, but whether this is significant is uncertain. g. , 2005). g. Ford and Tellam, 1994). This effect may be at least partly counterbalanced by increased mixing (see Abstractions above). , (1999) provides an example: this model proposes that in unsewered systems there will be a gradual fall in redox potential within the urban system in response to high organic loadings, with a redox zonation developing within the aquifer. Another example is the acidification of a sandstone aquifer described by Ford et al.

The ‘coupling’ approach. Challenges in urban groundwater modelling 19 Examples of these approaches are provided below. The adaptation approach As an example of the adaptation approach, Visual Modflow has recently been used to investigate the potential impacts of urban growth in the Greater Toronto Area, southern Ontario, Canada (Howard and Maier, 2007). The study area – the Central Pickering Development Lands, better known as the Seaton Lands – is part of the Duffins Creek Drainage Basin, a catchment comprehensively studied and modelled with MODFLOW by Gerber and Howard (1996, 2000, 2002) in an effort to understand the hydrogeological behaviour of the Newmarket Till aquitard.

1 are examined below. 1), which broadly reflect some of the main aspects of model design: geology, aquifer recharge, aquifer discharge and groundwater chemistry. There is inevitably some overlap in subject matter between the different themes and not all aspects of each theme are discussed, as many are not specific to urban systems. 1 Geology The distribution of the main geological units underlying a city are unaffected by urban development. However, there are a few situations where urban development affects the disposition of shallow subsurface material.

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Advanced simulation and modelling for urban groundwater management : UGROW by Ken Howard; Dubravka Pokrajac

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