Question

What is the relationship between size of natural events, disasters, and frequency of disasters? What is the concept of recurrence interval?

Answer 1

1.A natural hazard is a threat of a naturally occurring event will have a negative effect on humans.   This negative effect is what we call a natural disaster.  In other words when the hazardous threat actually happens and harms humans, we call the event a natural disaster.Natural Hazards (and the resulting disasters) are the result of naturally occurring processes that have operated throughout Earth's history.

2. A return period, also known as a recurrence interval or repeat interval is an estimate of the likelihood of an event, such as an earthquake, flood, landslide, or a river discharge flow to occur.

Answer 2

1.A natural hazard is a threat of a naturally occurring event will have a negative effect on humans.   This negative effect is what we call a natural disaster.  In other words when the hazardous threat actually happens and harms humans, we call the event a natural disaster.Natural Hazards (and the resulting disasters) are the result of naturally occurring processes that have operated throughout Earth's history.

2. A return period, also known as a recurrence interval or repeat interval is an estimate of the likelihood of an event, such as an earthquake, flood, landslide, or a river discharge flow to occurs