= Acknowledgments = We thank Göran Ekström, Paul Grimwood, Masha Liukis, Phil Maechling, Silvio Maraini, Gilles Mazet-Roux, Adrian Wyss, and John Yu for their contributions to QuakeML. QuakeML development at [[http://www.ethz.ch/index_EN|ETH Zurich]] is funded as part of the [[http://www.neries-eu.org|NERIES]] project (EC contract no. 026130). GFZ Potsdam acknowledges funding by the [[http://www.bmbf.de/en/|Bundesministerium für Bildung und Forschung]] (GITEWS project).