Articles | Volume 8, issue 2
Research article
07 Apr 2017
Research article |  | 07 Apr 2017

Path and site effects deduced from merged transfrontier internet macroseismic data of two recent M4 earthquakes in northwest Europe using a grid cell approach

Koen Van Noten, Thomas Lecocq, Christophe Sira, Klaus-G. Hinzen, and Thierry Camelbeeck

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Cited articles

Agius, M. R., D'Amico, S., and Galea, P.: The Easter Sunday 2011 Earthquake Swarm Offshore Malta: Analysis on Felt Reports, in: Earthquakes and Their Impact on Society, edited by: D'Amico, S., Springer International Publishing, Cham, 631–645, 2016.
Ahorner, L.: Untersuchungen zur quartären Bruchtektonik der Niederrheinischen Bucht, Eiszeitalter und Gegenwart, 13, 24–105, 1962.
Aki, K. and Richards, P. G.: Quantitative Seismology, 2nd Edn. University Science Books, 704 pp., 2002.
Amorèse, D., Bossu, R., and Mazet-Roux, G.: Automatic Clustering of Macroseismic Intensity Data Points from Internet Questionnaires: Efficiency of the Partitioning around Medoids (PAM), Seismol. Res. Lett., 86, 1171–1177, 2015.
Atkinson, G. M. and Wald, G. J.: “Did you feel it?” Intensity Data: A Surprisingly Good Measure of Earthquake Ground Motion, Seismol. Res. Lett. 78, 2007.
Short summary
Every person is a seismometer. By using people’s reports submitted online to European seismological agencies, we made new grid cell shaking intensity maps of the 2011 Goch (DE) and 2015 Ramsgate (UK) M4 earthquakes. Both events were widely felt in NW Europe and had non-concentric shaking intensity patterns which are strongly linked to the bedrock depth in the felt area. Storing intensity data in grid cells is a promising tool for seismological agencies to share intensity data anonymously.