Cambridge Earthquake Impact Database

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Since 1980, CAR Directors have been involved in more than 30 post-earthquake field missions, in each of which collecting damage data in the locations most affected has been an important objective. CAR, in conjunction with EEFIT has developed approaches to classification of both damage levels and building types, so that this data can be made use of in the development of building fragility functions. CAR has also been actively involved in assembling casualty data from many earthquake events.

CEQID, the Cambridge Earthquake Impact Database, ( brings together all of the data collected, alongside the data from many other studies, published and unpublished, by other organisations collecting similar damage and casualty data. CEQID is a web-accessible compilation of post-earthquake damage and casualty data, which is regularly updated. Currently there is damage data for more than 2 million buildings from 79 different earthquakes, and details of damage in more than 600 locations.

For each location CEQID links to the USGS Shakemap data enabling the damage data at that location to be linked to an estimate both of subsoil conditions and ground shaking. CEQID also has tools enabling users to download cross-event data for particular classes of buildings or damage levels, so that fragility curves can be derived showing the relationship of damage to varying levels of ground motion. This has been used by many users in the development of empirical fragility curves, including some of the CAR studies reported.


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