Rational - Response of Flood Events to Land Use and Climate Change - page 8

Fig. 1.5 Principle methodology flowchart

Premodeling phase: The tasks in this part included: DEM Quality control
modeling using deterministic and geostatistical methods, preparation of RAS-
geometric layers using HEC-GeoRAS model, preparation and modeling of dis-
charge database of observed data, and preparation of roughness values derived
from different land use maps.
Modeling phase: The main task in this part included: flood hazard assessment
using hydrodynamic modeling (1D and 1D-2D), climatologic and hydrologic
parameters analysis and trend detection using statistical techniques, land use
change analysis using GIS techniques and statistical methods.
Postmodeling phase: The aim of this part was to study the interaction and
feedback among land use change, climate change, and flood events. The principal
methodologic steps performed during this research are shown in Fig. 1.5 .

1.5 Chapter Summary

This chapter has laid the foundations for the research and introduced the problem,
hypothesis, aim, and objectives of the research, and lastly, the workflow and
structure of the thesis. As a problem statement, it discussed how flood events have
challenged people's lives throughout the world. Statistically, it has estimated the
number of affected people as well as economic losses such as damage to houses,