- 2023 Apr-May: East-central Nepal. Critical Zone seismic ambient noise experiment (Nepal-FRES project). Lead scientist for seismic experiment design and field operations. Collaboration with Nepal. Funded by NSF-FRES program.
- 2019 Feb: North Island, New Zealand. Seismic land explosion reflection/refraction profiling (SHIRE project, phase 2). USA chief scientist for scientific and operational logistics. Collaboration with New Zealand. Funded by NSF-EAR and N.Z. science agencies.
- 2017 Oct – 2018 Feb: North Island, New Zealand. Seismic onshore-offshore refraction profiling (SHIRE project, phase 1). USA chief scientist for land operations. Collaboration with New Zealand and Japan. Funded by NSF-EAR, plus N.Z. and Japan science agencies.
- 2011 May: North Island, New Zealand. Seismic controlled-source refraction/wide angle reflection profiling (SAHKE project). USA chief scientist. Collaboration with New Zealand and Japan. Funded by NSF-OCE, plus N.Z. and Japan science agencies.
- 2009 Mar-May: Taiwan. Seismic onshore-offshore refraction profiling (TAIGER-II). USA chief scientist. Collaboration with Taiwan. Funded by NSF-EAR, plus Taiwan agencies.
- 2008 Apr: Taiwan. Seismic controlled-source refraction/wide angle reflection profiling (TAIGER-I). USA chief scientist. Collaboration with Taiwan. Funded by NSF-EAR, plus Taiwan science agencies.
- 2006 Oct: Taiwan. Pilot seismic controlled-source refraction/wide angle reflection profiling (TAIGER). USA chief scientist. Collaboration with Taiwan. Funded by NSF-EAR, plus Taiwan science agencies.
- 1999 Oct: Southern California. Seismic controlled-source refraction/wide angle reflection profiling (LARSE-II). Field coordinator. Collaboration with USGS plus Germany, Denmark. Funded by SCEC, USGS and NSF-EAR, plus Germany science agencies.
- 1999 Sep: Northwest Turkey. Seismic rapid response to 1999 Izmit earthquake. Instrumentation coordinator and field participant. Funded by NSF-Geophysics.
- 1998 Mar: South Island, New Zealand. Seismic controlled-source reflection profiling (SIGHT). USA chief scientist. Collaboration with N.Z. Funded by NSF-EAR, plus N.Z. agencies.
- 1996 Jan-Mar: South Island, New Zealand. Seismic onshore-offshore refraction profiling plus seismic refraction/wide angle reflection profiling (SIGHT). Collaboration with Taiwan. USA co-chief scientist; coordinator of land operations. Funded by NSF-EAR, plus N.Z. agencies.
- 1994 Mar: South Island, New Zealand. Pilot seismic controlled-source reflection profiling (PUKAKI). USA coordinator. Collaboration with New Zealand. Funded by NSF-EAR, plus N.Z. science agencies.
- 1994 Oct: Southern California (Los Angeles region). Seismic onshore-offshore refraction profiling (LARSE). Field coordinator. Collaboration with USGS. Funded by SCEC , USGS, and NSF-EAR.
- 1993 Oct-Dec: Southern California. Passive seismology earthquake monitoring (LARSE). Field participant. Funded by SCEC.
- 1992 Feb: Southern California (Imperial Valley). Dense array piggyback to USGS seismic controlled-source refraction/wide angle reflection profiling (RISC project). Co-coordinator. Collaboration with Rice Univ. and USGS. Funded by NSF-EAR.
- 1992 Jan: Southern California (urban Los Angeles). Seismic mini-Sosie reflection profiling. Field coordinator. Collaboration with USGS. Funded by USGS.
- 1990 Aug: Southern California (Oceanside). Pilot seismic onshore-offshore refraction profiling. Field coordinator. Funded by SCEC.
- 1989 May-Jun: Southern California (Needles). Seismic reflection profiling (CALCRUST-II). Field coordinator. Funded by NSF-EAR.
- 1988 Apr: Arizona (Wickenburg). Dense array piggyback to USGS seismic controlled-source refraction/wide angle reflection profiling of Transition Zone. Co-coordinator. Collaboration with Stanford Univ. and USGS. Funded by NSF-EAR.
- 1985 May: Southern California (Needles). Seismic reflection profiling (CALCRUST-I). Field coordinator. Funded by NSF-EAR.
