Ripple effects on camera

by | Mar 10, 2010

This image shows NOAA modelling of the tsunami that followed Chile’s earthquake – which proved to be highly accurate.  Yale Environment 360 explains how to decipher the map:

Researchers used seismic information, wave measurements collected from buoy-based equipment, and computer modeling technology to predict the maximum wave amplitude, wave arrival time, and the extent of wave inundation. The colors illustrate the maximum computed tsunami amplitude in centimeters during the 24 hours after the quake, with the highest waves in purple and red and smaller waves in orange and yellow. The red triangles represent buoys.


  • Alex Evans

    Alex Evans is founder of the Collective Psychology Project, which explores how we can use psychology to reduce political tribalism and polarisation, a senior fellow at New York University, and author of The Myth Gap: What Happens When Evidence and Arguments Aren’t Enough? (Penguin, 2017). He is a former Campaign Director of the 50 million member global citizen’s movement Avaaz, special adviser to two UK Cabinet Ministers, climate expert in the UN Secretary-General’s office, and was Research Director for the Business Commission on Sustainable Development. He was part of Ethiopia’s delegation to the Paris climate summit and has consulted for Oxfam, WWF UK, the UK Cabinet Office and US State Department. Alex lives with his wife and two children in Yorkshire.

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