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- Megadrought abstract "A megadrought (or mega-drought) is a prolonged drought lasting two decades or longer. Past megadroughts have been associated with persistent multiyear La Niña conditions (cooler than normal water temperatures in the tropical eastern Pacific Ocean). The term megadrought is generally used to describe the length of a drought, and not its acute intensity. In scientific literature the term is used to describe decades-long droughts or multi-decadal droughts. Multiyear droughts of less than a decade, such as the Dust Bowl drought of the 1930s, are generally not described as megadroughts even though they are of a long duration. In popular literature multiyear or even single year droughts are occasionally described as megadroughts based upon their severity, the economic damage they inflict or other criteria, but this is the exception and not the rule.Megadroughts have historically led to the mass migration of humans away from drought affected lands, resulting in a significant population decline from pre-drought levels. They are suspected of playing a primary role in the collapse of several pre-industrial civilizations, including the Anasazi of the North American Southwest, the Khmer Empire of Cambodia, the Mayan of Mesoamerica, the Tiwanaku of Bolivia, and the Yuan Dynasty of China. The African Sahel region in particular has suffered multiple megadroughts throughout history, with the most recent lasting from approximately 1400 AD to 1750 AD. North America experienced at least four megadroughts during the Medieval Warm Period.".
- Megadrought thumbnail Christmas_Day07_018.jpg?width=300.
- Megadrought wikiPageExternalLink drought.mssl.ucl.ac.uk.
- Megadrought wikiPageExternalLink droughtmonitor.unl.edu.
- Megadrought wikiPageExternalLink drought.
- Megadrought wikiPageID "32760552".
- Megadrought wikiPageRevisionID "601987212".
- Megadrought hasPhotoCollection Megadrought.
- Megadrought subject Category:Climate_history.
- Megadrought subject Category:Droughts.
- Megadrought subject Category:Water_supply.
- Megadrought subject Category:Weather_hazards.
- Megadrought type Abstraction100002137.
- Megadrought type Attribute100024264.
- Megadrought type Condition113920835.
- Megadrought type Drought114537054.
- Megadrought type Droughts.
- Megadrought type Dryness114536438.
- Megadrought type State100024720.
- Megadrought comment "A megadrought (or mega-drought) is a prolonged drought lasting two decades or longer. Past megadroughts have been associated with persistent multiyear La Niña conditions (cooler than normal water temperatures in the tropical eastern Pacific Ocean). The term megadrought is generally used to describe the length of a drought, and not its acute intensity. In scientific literature the term is used to describe decades-long droughts or multi-decadal droughts.".
- Megadrought label "Megadrought".
- Megadrought sameAs m.0h3v5t0.
- Megadrought sameAs Q6808361.
- Megadrought sameAs Q6808361.
- Megadrought sameAs Megadrought.
- Megadrought wasDerivedFrom Megadrought?oldid=601987212.
- Megadrought depiction Christmas_Day07_018.jpg.
- Megadrought isPrimaryTopicOf Megadrought.