Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography

University of California San Diego


Education and Employments


07/2012—pres.       Professor, IGPP, UC San Diego

07/2011—06/2012      Res. Geophysicist/Senior Lecturer, IGPP, UC San Diego

07/2002—06/2011      Assoc. Res. Geophysicist/Lecturer, IGPP, UC San Diego

11/1998—06/2002      Assistant Research Geophysicist, IGPP, UC San Diego

06/1996—10/1998      Assistant Project Scientist, IGPP, UC San Diego

01/1994—05/1996      Postgraduate Researcher, IGPP, UC San Diego

01/1994—12/1995      Cecil and Ida Green Scholar, IGPP, UC San Diego

1993                            Dr. rer. Nat., Universität Karlsruhe, Germany

1988                            Diplom in Geophysics (M.S. equiv.), Universität Karlsruhe, Germany

1982                            Vordiplom in Geophysics (B.S. equiv.), Universität Karlsruhe, Germany


Service to IRIS and Seismological Community


2012 – pres     Amphibious Array Steering Committee

2012                Rolling-deck-to-repository (R2R) Advisory Panel

2005 – pres     IRIS Institution Representative

2002 – 2004    IRIS GSN Standing Committee

contributions to various IRIS proposals and the 2002 OMD science plan


Other selected Services


2009 – pres     independent liaison between OBSIP users and SIO OBS group to resolve data


2007 – pres     SIO Marine Operations Committee (chair since 2011)

2004 – pres     Editor for GJI

2001 – 2005    Associate Editor for JGR

2010                co-organizer of OBS user workshop, Snowbird, UT

2007                proposal co-PI for NSF ORION-OOI proposal

AGU Lehmann Medal Nomination Committee

NSF review panelist

interactions with IRIS DMC to debug instrument response software




Being an observational seismologist, IRIS has facilitated and influenced my research profoundly. As a student, I worked on single-record magnetic-tape data from the Black Forest Observatory, Germany, which has provided some of the world’s most spectacular free-oscillation spectra. It was exhilarating to witness how this observatory became part of the GSN, and how easy access to a large network of other such stations became a reality. With all the GSN, PASSCAL, EARTHSCOPE, OBSIP and other data available at a fingertip, IRIS revolutionized the way data are shared and used. In fact, IRIS has served as role model for neighboring disciplines to follow suit. In a funding climate that penalizes continuation of “business as usual”, IRIS increasingly faces the need to reinvent itself to stay competitive. Our biggest challenge will be to find the right balance between diversification into research and education on one hand and, on the other hand, providing the upkeep of DMC services and maintaining data quality and continuity, the things that made observational seismology what it is today. As a student, I participated in adventurous active source experiments, some in areas that are no longer safe to visit. Unfortunately, many of these data never made it to a common and safe data repository. My biggest dream is that the growing data and tools that are now at IRIS will continue to grow and be at IRIS for the generation after the next one.