The Key Controls in a DB System - GEOGRAPHY FOR 2019 & BEYOND

The Key Controls in a DB System - GEOGRAPHY FOR 2019 & BEYOND

Storm Hydrographs Aim: To recognise the recordings of a storm hydrograph and to understand its main features and how it can be influenced by h/p characteristics

Case Study: Pakistan 2010 A Storm Hyrdograph What do we mean by lag time, peak

flow and recession/falling limb. Pakistan Floods 2010 Watch first 3 mins

Pakistan 2010 Floods 11th August 2009 11th August 2010

The Key Controls in a DB System 1. 2.

3. 4. 5. 6. 7.

8. Basin size, shape and relief Types of precipitation Temperature

Land use Geology Soil Type Drainage Density Tides and storm surges

Key idea to remember The eight controls set out on the previous slide should not be viewed in isolation to one another. It is rare that just one of

these control mechanisms would contribute towards a major event in a drainage basin. They should therefore be viewed as an interacting set of factors that contribute

towards the behaviour of the basin. Task Use page 62-63 of Waugh Integrated Approach to make notes on the 8 key DB

factors. Where possible, try to find an example (photo, graph or quote) to further illustrate the point.

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