Unique new map shows earthquake risks on humanity
17 March 2011
The new World Earthquake Intensity Map has been created on an equal-population map and allows us to understand the earthquake intensity in relation to today´s population distribution, giving an idea of where most people are at risk in regards to seismic activity.
It provides a visualisation of all major earthquakes that have been complied in the Global Significant Earthquake Database. The database contains information on destructive earthquakes from 2150 BC to the present day that meet at least one of the following criteria: moderate damage (approximately $1 million or more), 10 or more deaths, magnitude 7.5 or greater, modified Mercalli intensity X or greater, or the earthquake generated a tsunami.
The map was created using these records by calculating `kernel density´, an equation that shows the probability distribution of earthquakes, in order to visualise the areas most at risk from 2150 BC to the present day. The new earthquake map was then created by transforming the data in a way that highlights populated areas whilst eliminating depopulated regions.
The resulting map gives each person living on earth the same amount of space while also preserving the geographical reference. The map does not only show the areas that are at highest risk, but also how this risk relates to global population distribution.
The map was produced by Benjamin Hennig, a postgraduate researcher from the University´s Department of Geography, as part of his research into visualising the world in a new way.
In addition, Ben, who has previously worked on a new online atlas which used population rather than land mass to illustrate the size and shape of each country, has produced a new, more detailed population cartogram for Japan.