| 1983-1984 | 3 weeks | R.V. Ellen B. Scripps | testing E.M. equipment. |
| Sept 1983 | 4 weeks | R.V. New Horizon | controlled source EM sounding. |
| Sept 1984 | 3 weeks | R.V. New Horizon | controlled source EM sounding. |
| May 1986 | 3 weeks | R.V. Sproul, | ``Chovy"; acoustic studies using E.M., DPG, and seismic instruments. |
| July 1986 | 1.5 week | R.V. Sproul | ``Chovy" recovery. |
| March 1988 | 1 week | R.V. Sproul | testing E.M. and pressure instruments (chief scientist). |
| May 1988 | 3 weeks | R.V. Sproul | ``Nachos"; acoustic studies using E.M., DPG, and seismic instruments. |
| Nov 1988 | 3.5 week | R.V. New Horizon | ``Pegasus" Controlled source E.M. sounding (co-chief scientist). |
| June 1989 | 3 weeks | R.R.S. Charles Darwin | Controlled source E.M. sounding over the East Pacific Rise (co-chief scientist). |
| June/Aug 1991 | 2 days | R.V. Sproul | tiltmeter testing (chief scientist). |
| October 1991 | 8 days | R.V. Thomas Washington | Loihi tiltmeter and hydrophone deployment, dredging, seabeam (chief scientist). |
| December 1991 | 4 days | R.V. Wecoma | Loihi tiltmeter and hydrophone recovery, (chief scientist). |
| November 1992 | 3 days | R.V. Sproul | tiltmeter and OBS deployment (chief scientist). |
| February 1993 | 2 days | R.V. Sproul | tiltmeter and OBS recovery (chief scientist). |
| October 1993 | 31 days | R.R.S. Charles Darwin | Geophysical studies of Reykjanes Ridge (co-chief) |
| February 1994 | 2 days | R.V. Sproul | tiltmeter and OBS testing (co-chief scientist). |
| March 1994 | 2 days | R.V. Sproul | tiltmeter and magnetometer testing (chief scientist). |
| July 1994 | 5 days | R.V. Wecoma | JdF tiltmeter and OBS deployment (chief scientist). |
| Sept 1994 | 4 days | R.V. Wecoma | JdF tiltmeter and OBS recovery (co-chief scientist). |
| April 1994 | 2 days | R.V. Sproul | LCheapo testing (chief scientist). |
| Oct 1995 | 16 days | Maestrale Secondo | Magnetotelluric survey for AGIP-INTE (chief scientist). |
| Nov 1995 | 32 days | R.V. Ewing | Lau Basin EM/seismic survey (co-chief scientist). |
| Aug 1996 | 12 days | R.V. Pelican | Gulf of Mexico magnetotelluric survey (chief scientist). |
| Oct/Nov 1996 | 30 days | Maestrale Secondo | Magnetotelluric survey for AGIP-INTE (chief scientist). |
| April 1997 | 8 days | R.V.\ Moana Wave | SWELL MT deployments. |
| June 1997 | 14 days | R.V. Pelican | Gulf of Mexico magnetotelluric survey (chief scientist) |
| April 1998 | 14 days | R.V. Franklin | SWAGGIE marine magnetotelluric and self potential |
| July 1998 | 11 days | R.V. Pelican | Gulf of Mexico magnetotelluric survey (chief scientist) |
| Oct 1999 | 1 day | small vessel | Instrument recovery off Kaui, Hawaii. |
| June 2000 | 3 days | Kaiyo | Offshore Japan MT deployments |
| November 2000 | 42 days | R.R.V. Charles Darwin | Oilfield characterization offshore West Africa |
| January 2001 | 2 days | R.V. Sproul | Instrument tests offshore San Diego (chief scientist) |
| February 2001 | 29 days | R.V. Thompson | APPLE (chief scientist) |
| March 2001 | 6 days | R.V. Longhorn | Gemini MT in Gulf of Mexico (chief scientist) |
| June 2001 | 11 days | S.V. Explorer | sub-basalt MT offshore Faroes (chief scientist) |
| June 2001 | 1 day | Acoustic Explorer | instrument recoveries offshore San Diego (chief scientist) |
| August 2001 | 10 days | R.V. New Horizon | APPLE recovery (chief scientist) |
| October 2001 | 3 days | R.V. Sproul | instrument tests offshore San Diego (chief scientist) |
| Jan/Feb 2002 | 21 days | R.R.V. Charles Darwin | oilfield characterization offshore West Africa |
| March 2002 | 2 days | R.V. Sproul | shallow water MT offshore San Diego (chief scientist) |
| July 2002 | 1 day | R.V. New Horizon | instrument tests offshore San Diego (chief scientist) |
| Feb 2003 | 12 days | R.V. Gyre | MT and CSEM in Gulf of Mexico (chief scientist) |
| April 2003 | 4 days | R.V. New Horizon | instrument tests offshore San Diego (chief scientist) |
| Feb 2004 | 30 days | R.V. Revelle | marine EM over the EPR (co-chief scientist) |
| August 2004 | 7 days | R.V. New Horizon | marine EM on Hydrate Ridge (chief scientist) |
| September 2004 | 3 days | R.V. New Horizon | EM transmitter tests (chief scientist) |
| April 2005 | 2 days | R.V. Sproul | Offshore San Diego deployment for SAIC (chief scientist) |
| October 2005 | 13 days | R.V. Pelican | GoM sub-salt MT survey (chief scientist) |
| May 2006 | 5 days | R.V. New Horizon | San Diego Trough marine CSEM and MT (chief scientist) |
| July 2006 | 5 days | R.V. Roger Revelle | Loihi seamount electical tomography (chief scientist) |
| May 2007 | 2 days | R.V. New Horizon | CSEM/MT instrument tests (chief scientist) |
| September 2007 | 15 days | Akademic Boris Petrov | Marine MT in the Gulf of Kutch (chief scientist) |
| April 2008 | 2 days | R.V. Sproul | Instrument tests (chief scientist) |
| October 2008 | 18 days | R.V. Roger Revelle | Gulf of Mexico gas hydrate studes (chief scientist) |
| November 2008 | 10 days | R.V. New Horizon | Plate boundary marine EM (data for Brent Wheelock's thesis) (chief scientist) |
| May/June 2009 | 32 days | R.V. Roger Revelle | EM studies of the Scarborough gas field (co-chief scientist) |
| August 2009 | 5 days | R.V. New Horizon | instrument tests off Newport, Oregon (chief scientist) |
| April/May 2010 | 30 days | R.V. Melville | SERPENT; MT and CSEM off Nicaragua (co-chief scientist) |
| May 2011 | 3 days | R.V. Wecoma | instrument tests off Oregon (chief scientist) |
| June 2011 | 1 day | R.V. Sproul | instrument tests (chief scientist) |
| Dec 2011 | 7 days | R.V. New Horizon | hydrate survey in San Nicolas Basin (chief scientist) |
| July 2012 | 2 days | R.V. Sproul | marine MT training (chief scientist) |
| Dec 2012 | 2 days | R.V. New Horizon | instrument tests (chief scientist) |
| March 2013 | 2 days | R.V. New Horizon | instrument tests (chief scientist) |
| May 2013 | 3 days | R.V. New Horizon | hydrate survey in San Nicolas Basin (chief scientist) |
| Jan/Feb 2014 | 28 days | R.V. Ocean Stalwart | CSEM/MT offshore Uruguay (chief scientist) |
| June 2014 | 7 days | R.V. New Horizon | hydrate survey in Santa Cruz Basin (chief scientist) |
| July 2014 | 7 days | R.V. Ukpic | permafrost survey in Prudhoe Bay (chief scientist) |
| August 2014 | 4 days | Shin Nichi Maru | hydrate survey offshore Japan |
| March 2015 | 2 days | R.V. New Horizon | instrument tests (chief scientist) |
| May 2015 | 10 days | B.O. Alpha Helix | Sea of Cortez geothermal project) |
| July 2015 | 8 days | R.V. Ukpic | permafrost survey in Prudhoe Bay (chief scientist) |
| May 2016 | 7 days | B.O. Alpha Helix | Sea of Cortez geothermal project) |
| July 2017 | 10 days | R.V. Point Sur | Gulf of Mexico hydrate studies (chief scientist) |
| October 2017 | 6 days | R.V. Roger Revelle | Mendocino Fracture Zone (chief scientist) |
| June 2018 | 2 days | R.V. Robert Gordon Sproul | instrument tests (chief scientist) |
| January 2019 | 2 days | F.V. Amigo | tar seep mapping Channel Islands |
| June 2019 | 32 days | R.V. Sikuliaq | CSEM and MT on Alaska megathrust |
| August 2020 | 7 days | R.V. Sally Ride | deep lithosphere CSEM sounding (chief scientist) |
| October 2021 | 4 days | G.O. America | seafloor characterization off Florida |
| 848 days total | |||