Last week I took a class of Engineering Geology (finally getting into something practically useful in the beginning of fourth year). I will give brief definitions and examples of the terms used. Then before you get bored, I will get into a funny way to remember the technical terms using football (soccer).
Prior to that class, I thought hazard and disaster were the same. However, technically, they are different. Let’s take a look at the definitions I studied.
Hazard: Probability of occurrence of an event or phenomenon which can damage lives and properties.
Disaster: The actual occurrence of a dangerous phenomenon which damages lives and property.
When seismologists say, “Nepal lies in a seismically active zone,” they are talking about the probable damages an earthquake can cause (hazard). When they talk about the damage caused by the earthquake in Nepal last year, they are saying something about disaster the earthquake brought up.
Let us also look at two more terms- risk and vulnerability.
Risk: The consequences in terms of “potential losses” for some particular cause, time and place. Specific risk is the product of hazard and vulnerability (Johnson and Degraff, 1988).
Vulnerability: The degree of risk a community is at due to various factors. For example, poor designing and construction of a house makes it vulnerable for a disaster and people living in it are at risk.
I am done with the definitions. Let’s use football- in particular, a famous footballer to understand the above defined terms. The footballer is (as you might already have realized) Eden Hazard.
E. Hazard is a hazard to his opponent team because he has the capacity to score a goal although he may not score in every match. In this match we are talking of, Hazard attacked several times but did not succeed. E. Hazard remained a hazard until 88th minute.
In the eighty-ninth minute of the match, when no goal has not yet occurred, E. Hazard gets a pass from his teammate and he dribbles ahead. His skill allows him to get through the defenders of opposition team. Their defence which had been vulnerable by previous attacks, is now exposed and is at a greater risk (due to the combined effects of Hazard and vulnerability) Hazard shoots and when the opponent goalkeeper cannot save the goal. Hazard has brought a disaster to his opposition. A draw would have made the opposition the league winner. But Hazard’s goal changes the equation. The other team is damaged psychologically.
Reduce Risk! Save Lives!!