Risks, Loss, and Response to Flood Events in the World

In the past three decades, 40% of the world's flood events occurred in Asia, while Southeast Asia was the continent affected by the world's second largest flood after South Asia (Dutta and Herath, 2004). As a result, the risk of losing human life, goods, environmental assets is rising. Therefore, in order to understand flood response characteristics and flood forecasts, not only design and economic evaluation of water conservation projects but also an effective flood management program is necessary. Seasonal topography of southwest monsoon and high rainfall intensity I

Currently, 8 million people live in the UK area where they are in danger of flood. As the population increases and the reliance on residential and industrial flood plains increases, the possibility of natural flood defense and the possibility of extreme weather phenomena will increase, and this number is expected to increase. In the event of a flood, the degree of confusion depends on the level of previous preparation, and you can collect and analyze speed information and take appropriate action. I am managing UNEP's Geomatics team; we are using remote sensing technology to create state-of-the-art earth observation solutions. For example, in the event of an accident, we provide information on the extent of floods, the risk of pollution, and infrastructure damage. To make these observations, UNEP has provided a set of different tools that are most suitable for a variety of situations.

Floods can have a major impact on the local community, and serious incidents can result in property damage, injury, and even loss of human lives. Since the large Australian population lives in the flood plain we need to understand the risks of floods and plan flood risks wherever possible. To quantify flood risk, you need to know how much traffic is generated for a particular rain event at a particular location. You can use a hydrological model to estimate this. There are many kinds of hydrological models for various purposes. The simplest and most widely used industry is an event-based model. They used information on storms and catchment areas to model a single flood event. In many cases, I am interested in the design of storm modeling, which is a fictitious storm with a certain probability of occurrence (eg a flood occurring with a probability of 1% in any year).

It is common to distinguish different aspects of risk. One aspect relates to the likelihood that an event will occur. There is also a loss side. If an event causes a significant loss, the event is in danger. In most cases, risk is considered a combination of these risks. Danger depends on the likelihood of occurrence and the severity of the loss. Finally, there is a more psychological concept of risk. Risks are often related to feelings of loss of control. People do not always clearly distinguish these different aspects. Therefore, there are occasional differences between climbers and nonclimbers.