UPSC Notes
Landslides – Geography

Landslides are caused by mechanical disturbances, in which large mixed mass of rock, earth, and debris move down a slope. Debris flows, also known as mudslides, are a common type of fast-moving landslide that tends to flow in channels. These are typically steeper slopes with less stable soils ...

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Droughts – Geography

A drought is a serious natural disaster that may occur if there is a series of abnormally dry months or years. In addition, the drought frequently affects the people to leave their homes and move to wetter areas who are intended for refugees according to the International Organization for ...

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Floods – Geography

Flood is a natural phenomenon occurring in different parts of the world. It occurs when an area is overwhelmed by an excessive amount of water, which causes damage to life and property. Floods occur commonly when water in the form of surface run-off exceeds the carrying capacity of the river ...

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Structure of Tropical Cyclone

The tropical cyclone is a cyclonic windstorm having an organized vortex, formed over the warm sea surface. A cyclone generally occurs in the areas of coordinated wind flow around low-pressure. The tropical cyclone is a closed atmospheric circulation which consists of lower pressure, warm air ...

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Tropical Cyclone – Geography

A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level wind circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain. The term tropical refers to the geographical origin of these systems, which form ...

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Tsunami in India

A tsunami is a series of waves or surges that are caused due to sea floor displacement. Tsunami has an associated force that causes the sea-floor to move abruptly resulting in sudden displacement of ocean water in the form of high vertical waves. The impact of this movement on nearby coasts, ...

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Earthquake Hazard Mitigation

Earthquakes are unpredictable, not uniform in time or space, and can be of various magnitudes. Therefore, mitigation measures for earthquakes should incorporate the diverse characteristics of these natural hazards. Government bodies and non-profit organizations offer different programs on ...

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Socio-Environmental Consequences of Earthquakes

It becomes a calamity when it strikes the areas of high density of population. It not only damages and destroys the settlements, infrastructure, transport and communication network, industries and other developmental activities but also robs the population of their material and socio-cultural ...

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Earthquakes in India

Earthquakes originate due to the breakage of fault lines and at irregular intervals, which makes them unpredictable. The worst part is earthquakes can happen anywhere and anytime, and we never know when we will be affected. These earthquakes result from a series of earth movements brought about ...

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Natural Disasters and Hazards in India

Natural disasters can significantly impact a country’s socio-economic development, often leading to a humanitarian crisis. India is particularly sensitive to natural hazards due to high population density and rapid economic growth in coastal areas. Natural hazards present a broad array of ...

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Yokohama Strategy and Plan of Action for a Safer World

The World Conference on Disaster Risk Reduction is a series of United Nations conferences focusing on disaster and climate risk management in the context of sustainable development. The World Conference has been convened three times, with each edition to date having been hosted by Japan: in ...

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Classification of Natural Disasters

The natural disaster category being divided into six disaster groups: Biological, Geophysical, Meteorological, Hydrological, Climatological, and Extra-Terrestrial. Atmospheric: This category of natural disaster has its own natural characteristics, geographic region where it occurs, time of year ...

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