Caelum Incognitum — The interactive encyclopedia of ufology

UFO wave (flap)

Objects & phenomena

A sudden increase in the number of reports in a region or country, lasting weeks or months. Examples: the United States in 1947 and 1952, Belgium in 1989-1990, Brazil in 1977 with Operation Prato. Waves are also studied as social phenomena, since media coverage increases reporting.

In the major cases

• The Belgian Wave (1989)
• Colares (Operation Prato) (1977)
• The Washington DC UFO Flap (1952)
• The Warminster Thing (1965)
• The Trindade Island Photographs (1958)

See also

• Belgian wave (1989-1990)
• Ghost rockets
• Mystery airships
• The 1947 wave
• Psychosocial hypothesis
• Operation Prato (Brazil, 1977)
• Media effect
• 1952 wave
• Autumn 1973 wave
• The 1954 French wave
• Mass hysteria
• The Hudson Valley wave (1982-1986)

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