Senior research seismologist (MSc. Geophysics) at KNMI; Director of the ORFEUS Data Centre (ODC; hosted by KNMI). His expertise in seismology covers seismic instrumentation, network operations, waveform processing and large data sets analysis. His research during the last years focused on phase pickers, earthquake locations and instrumental self-noise. Recently he started a KNMI MSO (‘Meerjaren Strategisch Onderzoek’) research project to monitor temporal seismic velocity changes inside volcanos using seismic interferometry. As seismologist at the KNMI he is responsible for the operations and data quality of the KNMI seismic broad-band networks in the Netherlands and the Caribbean Netherlands.
Participating in a series of projects on international level, including FP7 project COOPEUS (Aug 2012-Aug 2015) and H2020 projects EUDAT2020 (March 2015-March 2018) and EPOS-IP (submitted). The COOPEUS project aims for strengthening the cooperation between the US and the EU in the field of research infrastructures (e.g. EPOS, EMSO, ICOS, ENVRI, EARTHSCOPE and EARTHCUBE). EUDAT2020 is a European project funded in the H2020 framework with the ambitions to bridge the gap between research infrastructures and e-Infrastructures. The EPOS IP proposal was submitted to the Horizon 2020 Infrastructures call: H2020-INFRADEV-3-2015 in which it was explicitly invited after prioritizing by ESFRI, the European Strategy Forum on Research Infrastructures. EPOS IP will build on the achievements of the successful EPOS preparatory phase project (EPOS PP). EPOS aims to integrate the existing, and future research infrastructures in the European solid Earth science communities.
Recent research activities are related to seismic instrumental noise measurements and ambient noise monitoring in the Netherlands and the Dutch Caribbean. The continuous monitoring of background noise serves as a quality monitor and a calibration tool for the verification of instrumental metadata. My research in quantifying data quality has broadens into timing problems, waveform quality, statistical parameters, spikes, gaps, etc. and the development of services using this information. Other, recent research focuses on the improvement of resolution of depth differences between earthquakes in Groningen by applying different techniques, like a grid-search technique and the double-difference earthquake location algorithm.