The strong-motion net work (SeFoNiB) with 19 stations set up in 2006 by Cologne University in the Lower Rhine Embayment (LRE) (Hinzen and Fleischer 2007) includes the first modern seismic stations within the Cologne city limits, the only German megacity with a significant seismic hazard. In a cooperative venture with the Dombauverwaltung Köln and Cologne University, the network was recently supplemented by five stations within Cologne Cathedral, one of the largest Gothic cathedrals and a World Heritage monument since 1996.

Large clerical and other historic buildings have been the focus of several seismological studies, often aiming to reveal...

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