Disaster in the context of "Public security"

Disaster risk reduction aims to make disasters less likely to happen. The approach, also called DRR or disaster risk management, also aims to make disasters less damaging when they do occur. DRR aims to make communities stronger and better prepared to handle disasters. In technical terms, it aims to make them more resilient or less vulnerable. When DRR is successful, it makes communities less the vulnerable because it mitigates the effects of disasters. This means DRR can make risky events fewer and less severe. Climate change can increase climate hazards. So development efforts often consider DRR and climate change adaptation together.

It is possible to include DRR in almost all areas of development and humanitarian work. People from local communities, agencies or federal governments can all propose DRR strategies. DRR policies aim to "define goals and objectives across different timescales and with concrete targets, indicators and time frames."

A doomsday cult is a cult that believes in apocalypticism and millenarianism, including both those that predict disaster and those that attempt to destroy the entire universe. Sociologist John Lofland coined the term in his 1966 study Doomsday Cult: A Study of Conversion, Proselytization, and Maintenance of Faith, about a group of members belonging to the Unification Church of the United States. In 1958, Leon Festinger published a study of a group with cataclysmic predictions: When Prophecy Fails: A Social and Psychological Study of a Modern Group that Predicted the Destruction of the World.

The phenomenon of continued commitment to the "doomsday cult", even after the prophecy fails, has been attributed to the coping method of dissonance reduction, a form of rationalization. Members often dedicate themselves with renewed vigor to the group's cause after a failed prophecy, rationalizing with explanations such as a belief that their actions forestalled the disaster or a continued belief in the leader when the date for disaster is postponed. Some researchers believe that the use of the term by the government and the news media can lead to a self-fulfilling prophecy, in which actions by authorities reinforces the apocalyptic beliefs of the group, which in turn can inspire further controversial actions. Group leaders have themselves objected to comparisons between one group and another, and parallels have been drawn between the concept of a self-fulfilling prophecy and the theory of a deviancy amplification spiral.

A casualty (/ˈkæʒuəlti/ KAZH-oo-əl-tee, UK also /ˈkæʒjuəlti/ KAZH-yoo-əl-tee), as a term in military usage, is a person in military service, combatant or non-combatant, who becomes unavailable for duty due to any of several circumstances, including death, injury, illness, missing, capture or desertion.

In civilian usage, a casualty is a person who is killed, wounded or incapacitated by some event; the term is usually used to describe multiple deaths and injuries due to violent incidents or disasters. It is sometimes misunderstood to mean "fatalities", but non-fatal injuries are also casualties.

Public security or public safety is the prevention of and protection from events that could endanger the safety and security of the public through significant injury or property damage. It is often conducted by a state government to ensure the protection of citizens, persons in their territory, organizations, and institutions against threats to their well-being, survival, and prosperity.

The public safety issues that a municipality, county, regional, or federal jurisdiction may handle include crimes (ranging from misdemeanors to felonies), structure fires, conflagrations, medical emergencies, mass-casualty incidents, disasters, terrorism, and other concerns.

Emergency management (also disaster management or emergency preparedness) is a science and a system charged with creating the framework within which communities reduce vulnerability to hazards and cope with disasters. Emergency management, despite its name, does not actually focus on the management of emergencies; emergencies can be understood as minor events with limited impacts and are managed through the day-to-day functions of a community. Instead, emergency management focuses on the management of disasters, which are events that produce more impacts than a community can handle on its own. The management of disasters tends to require some combination of activity from individuals and households, organizations, local, and/or higher levels of government. Although many different terminologies exist globally, the activities of emergency management can be generally categorized into preparedness, response, mitigation, and recovery, although other terms such as disaster risk reduction and prevention are also common. The outcome of emergency management is to prevent disasters and where this is not possible, to reduce their harmful impacts.

Vulnerability refers to "the quality or state of being exposed to the possibility of being attacked or harmed, either physically or emotionally." The understanding of social and environmental vulnerability, as a methodological approach, involves the analysis of the risks and assets of disadvantaged groups, such as the elderly. The approach of vulnerability in itself brings great expectations of social policy and gerontological planning. Types of vulnerability include social, cognitive, environmental, emotional or military.

In relation to hazards and disasters, vulnerability is a concept that links the relationship that people have with their environment to social forces and institutions and the cultural values that sustain and contest them. "The concept of vulnerability expresses the multi-dimensionality of disasters by focusing attention on the totality of relationships in a given social situation which constitute a condition that, in combination with environmental forces, produces a disaster". It is also the extent to which changes could harm a system, or to which the community can be affected by the impact of a hazard or exposed to the possibility of being attacked or harmed, either physically or emotionally.

A hypocenter or hypocentre (from Ancient Greek ὑπόκεντρον (hupókentron) 'below the center'), also called ground zero or surface zero, is the point on the Earth's surface directly below a nuclear explosion, meteor air burst, or other mid-air explosion. In seismology, the hypocenter of an earthquake is its point of origin below ground; a synonym is the focus of an earthquake.

Generally, the terms ground zero and surface zero are also used in relation to epidemics, and other disasters to mark the point of the most severe damage or destruction. The term is distinguished from the term zero point in that the latter can also be located in the air, underground, or underwater.

Disasters can have high costs associated with responding to and recovering from them. This page lists the estimated economic costs of relatively recent disasters.

The costs of disasters vary considerably depending on a range of factors, such as the geographical location where they occur. When a large disaster occurs in a wealthy country, the financial damage may be large, but when a comparable disaster occurs in a poorer country, the actual financial damage may appear to be relatively small. This is in part due to the difficulty of measuring the financial damage in areas that lack insurance. For example, the 2004 Indian Ocean earthquake and tsunami, with a death toll of around 230,000 people, cost a "mere" $15 billion, whereas in the Deepwater Horizon oil spill, in which 11 people died, the damage was six times higher.

Urban flooding is the inundation of land or property in cities or other built environment, caused by rainfall or coastal storm surges overwhelming the capacity of drainage systems, such as storm sewers. Urban flooding can occur regardless of whether or not affected communities are located within designated floodplains or near any body of water. It is triggered for example by an overflow of rivers and lakes, flash flooding or snowmelt. During the flood, stormwater or water released from damaged water mains may accumulate on property and in public rights-of-way. It can seep through building walls and floors, or backup into buildings through sewer pipes, cellars, toilets and sinks.

There are several types of urban flooding, each with a different cause. City planners distinguish pluvial flooding (flooding caused by heavy rain), fluvial flooding (caused by a nearby river overflowing its banks), or coastal flooding (often caused by storm surges). Urban flooding is a hazard to both the population and infrastructure. Some well known disaster events include the inundations of Nîmes (France) in 1998 and Vaison-la-Romaine (France) in 1992, the flooding of New Orleans (United States) in 2005, and the flooding in Rockhampton, Bundaberg, Brisbane during the 2010–2011 Queensland floods in Australia, the 2022 eastern Australia floods, and more recently the 2024 Rio Grande do Sul floods in Brazil.