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Hydrological extremes CWC project – Project Board Meeting @ Imperial College

Hydrological extremes CWC project – Project Board Meeting @ Imperial College. 14 th February 2011 BGS’s input. Feedbacks and extremes – groundwater perspective. Feedbacks: Climate change – Rainfall, temperature, windspeed, etc. Land-use: human and natural response to CC

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Hydrological extremes CWC project – Project Board Meeting @ Imperial College

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  1. Hydrological extremes CWC project – Project Board Meeting @ Imperial College 14th February 2011 BGS’s input

  2. Feedbacks and extremes – groundwater perspective • Feedbacks: • Climate change – Rainfall, temperature, windspeed, etc. • Land-use: human and natural response to CC • Recharge and abstraction – both modified • Extremes: • Droughts and floods • Impacts on abstraction (DO)

  3. Scale and complexity - Thames Basin

  4. Sand and gravel Bedrock IO GO Upper Thames Corallian Ock London Eocene Kennet LGS Wealden UGS, Chalk + Palaeogene

  5. Potential study areas • Eden Valley • Role of GW in flooding?? • Security of GW abstraction • Thames basin • Oxford – GW enhanced flooding • Colne valley – adited sources • Pang/Lambourn – GW flooding and drought • Jurassic Lst – Baseflow under drought conditions • Not forgetting: Isle of Wight

  6. Oxford

  7. Oxford

  8. Colne Valley Note alluvium, sands and gravel, and river terrace deposits

  9. Pang/Lambourn Overland Flow JULES: Soil Moisture UnsaturatedZone ZOOMQ3D: Groundwater Flow

  10. Pang/Lambourn

  11. Jurassic Lst

  12. Eden Valley

  13. What we think we’re doing • Choose study areas: likely to be Colne Valley, Thames Chalk, Jurassic Limestone and Oxford as well as Eden Valley. (WP2a) • Develop geological and hydrogeological understanding. Characterisation of soil and, superficial and bedrock cover (thickness and hydraulic properties).(WP2a) • Decide on generic examples and create investigative models to understand particular issues.(WP2a/b) • Develop modelling system to tackle operational issues – linking regional scale model to borehole scale models.(WP2b) • Run scenarios: Flooding and droughts.(WP2c) Radial model Cartesian model

  14. Hydrological extremes CWC project – Project Board Meeting @ Imperial College 14th February 2011 BGS’s input

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