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Huge thanks to Okouchi-San and Dr. Sakai and everyone at NIED and the Large Scale Rainfall Simulator for their time, expertise and access to this amazing facility.

A big thank you to Prof. Olga Mavrouli and Prof. Bill Schulz for their invaluable expertise on the mechanisms of landslides.

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References:
Ulbrich, C. W. (1983). Natural variations in the analytical form of the raindrop size distribution. Journal of climate and applied meteorology, 1764-1775. – https://ve42.co/Ulbrich83

Van Boxel, J. H. (1997, November). Numerical model for the fall speed of rain drops in a rain fall simulator. In Workshop on wind and water erosion (Vol. 5, pp. 77-85). – https://ve42.co/Boxel87

Canuti, P., Focardi, P., & Garzonio, C. (1985). Correlation between rainfall and landslides. Bulletin of Engineering Geology & the Environment, 32(1).

Tsaparas, I., Rahardjo, H., Toll, D. G., & Leong, E. C. (2002). Controlling parameters for rainfall-induced landslides. Computers and geotechnics, 29(1), 1-27. – https://ve42.co/Tsaparas2002

Nakamura, H., & Oosawa, M. (2021, March). Effects of the underground discharge channel/reservoir for small urban rivers in the Tokyo area. In IOP Conference Series: Earth and Environmental Science (Vol. 703, No. 1, p. 012029). IOP Publishing. – https://ve42.co/Nakamura21

Guthrie, R. H., & Evans, S. G. (2004). Magnitude and frequency of landslides triggered by a storm event, Loughborough Inlet, British Columbia. Natural Hazards and Earth System Sciences, 4(3), 475-483. – https://ve42.co/Guthrie2004

Images & Video:
Miyako, Iwate Tsunami via ANNnewsCH - https://ve42.co/Miyako2011
Mount Onake Volcano via BBC News - https://ve42.co/BBCOnake
Typhoon Jebi via Al Jazeera - https://ve42.co/TyphoonJebi
East Asia Typhoons via CBC News - https://ve42.co/TyphoonCBC
Atami Landslide via The Quint - https://ve42.co/Atami2021
Atami Landslide via news.com.au - https://ve42.co/2ndAtami2021
Sendai Earthquake via ANNnewsCH - https://ve42.co/SendaiQuake
Nagasaki Mudslide via The Telegrap - https://ve42.co/NagasakiMudslide
Wajima Landslide via Guardian News - https://ve42.co/WajimaLandslide
Drone Rainfall Test via AIZAWAchan - https://ve42.co/DroneRain
Car Rainfall Test via TIER IV - https://ve42.co/CarRainTest
Rainfall Simulator via NIED - https://ve42.co/RainfallSim1
External Footage of Simulator via NIED - https://ve42.co/RainfallSim2
Landslide Simulations via NIED - https://ve42.co/RainfallSim3
Typhoon Prapiroon via Force Thirteen - https://ve42.co/TyphoonPrapiroon
Yanohigashi Floods via CNA - https://ve42.co/YanohigashiFloods
Japan Floods via The Telegraph - https://ve42.co/TelegraphFlood
Japan Floods via euronew - https://ve42.co/EuroNewsFlood
Typhoon Hagibis via Guardian News - https://ve42.co/TyphoonHagibis
Typhoon Hagibis via SCMP - https://ve42.co/TyphoonHagibisSCMP
Satellite Imagery of Hagibis via Force Thirteen - https://ve42.co/HagibisSatellite
Tokyo Flood Control System via NikkeiAsia.com - https://ve42.co/FloodControl
Landslides Footage via Underworld - https://ve42.co/MonsterLandslides
Norway Landslide via ABC7 - https://ve42.co/NorwayLandslide
Planet Destruction via BBC - https://ve42.co/BBCDestruction
B.C. Climate Change Danger via CBC News - https://ve42.co/BCClimateChange
Canada’s Logging Roads via CBC News - https://ve42.co/CBCLogging

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Special thanks to our Patreon supporters:
Chris Harper, Max Paladino, Balkrishna Heroor, Adam Foreman, Orlando Bassotto, Tj Steyn, meg noah, KeyWestr, TTST, John H. Austin, Jr., john kiehl, Anton Ragin, Diffbot, Gnare, Dave Kircher, Burt Humburg, Blake Byers, Evgeny Skvortsov, Meekay, Bill Linder, Paul Peijzel, Josh Hibschman, Juan Benet, David Johnston, Ubiquity Ventures, Richard Sundvall, Lee Redden, Stephen Wilcox, Marinus Kuivenhoven, Michael Krugman, Sam Lutfi

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Directed by Petr Lebedev
Written by Petr Lebedev
Edited by Peter Nelson
Additional Research by Gregor Čavlović
Animated by Fabio Albertelli
Illustrations by Jakub Misiek
Filmed by Petr Lebedev, Emily Zhang, Derek Muller
Produced by Petr Lebedev, Han Evans and Gregor Čavlović
Thumbnail by Peter Sheppard
Additional video/photos supplied by Getty Images
Music from Epidemic Sound