GEOLOGY

Detailed explanation-1: -Tornadoes and flash floods are short-lived, violent events, affecting a relatively small area. Others, such as droughts, develop slowly, but can affect most of a continent and entire countries for months or even years. An extreme weather event can involve multiple hazards at the same time or in quick succession.

Detailed explanation-2: -SUDDEN-ONSET DISASTERS can be linked to meteorological hazards including tropical cyclones, typhoons, hurricanes, tornadoes, blizzards; hydrological hazards including coastal floods, mudflows; or geophysical hazards including earthquakes, tsunamis, volcanic eruptions (UNISDR).

Detailed explanation-3: -A sudden-onset disaster is one triggered by a hazardous event that emerges quickly or unexpectedly. Sudden-onset disasters could be associated with, e.g., earthquake, volcanic eruption, flash flood, chemical explosion, critical infrastructure failure, transport accident.

Detailed explanation-4: -The different types of natural hazards include: Geophysical hazards (e.g., earthquakes, volcanic eruptions, and tsunamis). Hydrological hazards (e.g., floods). Meteorological hazards (e.g., cyclones and storms).

Detailed explanation-5: -Slow onset events evolve gradually from incremental changes occurring over many years or from an increased frequency or intensity of recurring events, whereas a rapid onset event may be a single, discrete event that occurs in a matter of days or even hours.