The borehole network, designed to detect and locate earthquakes with magnitudes greater than 1.5 around the gas fields, allows to locate these events with an accuracy of 0.5-1km. Depth resolution is worse, at best an accuracy of 2 km can be reached. Research on location is focused on improving the resolution by taking into account local structure and looking for the detection of converted phases and multiples. In addition to regional studies, also an active participation in microseismic monitoring started, observing earthquakes of magnitudes between -3 and -1. Source- mechanisms and parameters (e.g. stress-drop) have been retrieved for the larger events and, since the network is sparse, also have a large uncertainty. Studies in waveform modeling are foreseen. Mechanisms are of special importance as input to geomechanical studies of these reservoirs, as carried out by, e.g., TNO.

• Kwee, J., D. Kraaijpoel and B. Dost, Microseismic pilot study in the Bergermeer field. Summary of results
  Report, December 14, 2010
• Dahm, T., S. Hainzl, D. Becker, M. Bisschoff, S. Cesca, B. Dost, R. Fritschen, D. Kuhn, S. Lasocki, C.D. Klose, Th. Meier, M. Ohrnberger, E. Rivalta, S. Shapiro, U. Wegler, How to discriminate induced, triggered and natural seismicity
  in J. Ritter and A. Oth, Proceedings of the Workshop Induced Seismicity, November 15-17, 2010, European Centre for Geodynamics and Seismology, Luxembourg
• Kraaijpoel, D., F. Goutbeek, R. Sleeman and B. Dost, Induced seismicity in the gas reservoirs of the Netherlands
  Poster: EGU General Assembly 2009, April 20-24, 2009, Vienna
• Kraaijpoel, D., B. Dost, R. Sleeman and F. Goutbeek, Location of induced earthquakes in the Dutch gas fields
  Poster: ESC General Assembly 2008, September 7-12, 2008, Hersonissos
• Dost, B., and H. W. Haak, Natural and induced seismicity
  in Th. E. Wong, D.A.J. Batjes, and J. de Jager, eds., Geology of the Netherlands, Royal Netherlands Academy of Arts and Sciences, 223-229 (2007)