Floods in a Changing Climate: Inundation Modelling

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Flood inundation models enable us to make hazard predictions for floodplains, mitigating increasing flood fatalities and losses. This book provides an understanding of hydraulic modelling and floodplain dynamics, with a key focus on state-of-the-art remote sensing data, and methods to estimate and communicate uncertainty. Academic researchers in the fields of hydrology, climate change, environmental science and natural hazards, and professionals and policy-makers working in flood risk mitigation, hydraulic engineering and remote sensing will find this an invaluable resource. This volume is the third in a collection of four books on flood disaster management theory and practice within the context of anthropogenic climate change. The others are: Floods in a Changing Climate: Extreme Precipitation by Ramesh Teegavarapu, Floods in a Changing Climate: Hydrological Modelling by P. P. Mujumdar and D. Nagesh Kumar and Floods in a Changing Climate: Risk Management by Slodoban Simonović.
Table of contents :
Contents......Page 9

Contributing authors......Page 11
Forewords......Page 13
Preface......Page 15
1.2 Definitions......Page 17
1.4 Climate and floods......Page 20
1.5 Problems addressed by this book......Page 22
Part I Theory......Page 25
2.2 Subcritical and supercritical flows......Page 27
2.3 Water surface profiles......Page 31
2.4 Backwater computation......Page 34
2.5 Exercises......Page 35
3.2 Navier-Stokes equations......Page 37
3.2.1 Continuity equation......Page 38
3.2.2 Momentum equation......Page 39
3.3 Saint-Venant equations......Page 40
3.4 Kinematic wave model......Page 42
3.5 Diffusive model......Page 43
3.6 Fully dynamic model......Page 44
3.8 Exercises......Page 46
Part II Methods......Page 47
4.1.1 Topography......Page 49
4.2.1 Topography......Page 50
4.2.2 Flood extent maps......Page 52
4.3 Uncertainty......Page 54
4.3.1 Uncertainty in river discharges......Page 56
4.3.2 Uncertainty in space-borne flood extent maps......Page 57
4.5 Exercises......Page 58
5.1.1 Flood propagation and inundation processes......Page 59
5.1.3 Modelling tools......Page 60
5.2.1 Selection criteria......Page 62
5.3.1 Time discretization......Page 64
5.3.2 Geometry......Page 65
5.4 Conclusions and perspectives......Page 66
5.5 Exercises......Page 67
6.2.1 At-a-point time series (hydrographs)......Page 68
6.2.3 Spatially distributed, binary pattern data (flood extent maps)......Page 69
6.3 Calibration and validation......Page 71
6.4.2 The GLUE framework......Page 73
6.4.3 Uncertainty estimation......Page 74
Specific tasks......Page 75
7.1 Mapping model results......Page 77
7.3 Probabilistic floodplain mapping......Page 79
7.4 Deterministic versus probabilistic......Page 81
7.6 Exercises......Page 82
Part III Applications......Page 83
8.2.1 Building hydraulic models......Page 85
8.2.2 Assessing urban flood models......Page 86
8.3.1 Site and event description......Page 87
8.3.2 Data availability and collection......Page 88
8.3.4 Results......Page 90
8.4 Discussion and conclusions......Page 92
9.1 Introduction......Page 94
9.2.1 Case study......Page 95
9.3.2 Model evaluation: the 1879 inundation......Page 96
9.3.3 Numerical experiment......Page 97
9.5 Conclusions......Page 98
Useful equations......Page 99
10.2 Test site and problem statement......Page 101
10.3 Methods......Page 102
10.4 Results......Page 103
10.5 Conclusions......Page 104
11.2.1 Case study......Page 105
11.2.2 Problem statement......Page 106
11.4.1 Resistance strategy......Page 107
11.4.2 Controlled flooding......Page 109
11.4.3 Flood hazard mapping......Page 110
11.5 Discussion......Page 111
11.6 Conclusions......Page 112
References......Page 113
Index......Page 119
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Floods in a Changing Climate: Inundation Modelling
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