| Li | 
          Aibing | 
          University of Houston | 
          PASSCAL | 
          Member | 
          2007 | 
          2007 | 
        
        
      
        
          | Li | 
          Aibing | 
          University of Houston | 
          PASSCAL | 
          Member | 
          2009 | 
          2009 | 
        
        
      
        
          | Levander | 
          Alan | 
          Rice University | 
          PASSCAL | 
          Chair | 
          2006 | 
          2008 | 
        
        
      
        
          | Nyblade | 
          Andy | 
          Penn State University | 
          PASSCAL | 
          Ex Officio | 
          2012 | 
          2014 | 
        
        
      
        
          | Meltzer | 
          Anne | 
          Lehigh University | 
          PASSCAL | 
          Member | 
          1994 | 
          1995 | 
        
        
      
        
          | Meltzer | 
          Anne | 
          Lehigh University | 
          PASSCAL | 
          Chair | 
          1996 | 
          1998 | 
        
        
      
        
          | Sheehan | 
          Anne | 
          University of Colorado, Boulder | 
          PASSCAL | 
          Member | 
          2002 | 
          2004 | 
        
        
      
        
          | Tréhu | 
          Anne | 
          Oregon State University | 
          PASSCAL | 
          Member | 
          1988 | 
          1990 | 
        
        
      
        
          | Tréhu | 
          Anne | 
          Oregon State University | 
          PASSCAL | 
          Chair | 
          1991 | 
          1992 | 
        
        
      
        
          | Tréhu | 
          Anne | 
          Oregon State University | 
          PASSCAL | 
          Member | 
          1993 | 
          1993 | 
        
        
      
        
          | Tréhu | 
          Anne | 
          Oregon State University | 
          PASSCAL | 
          Board Liaison | 
          2022 | 
          2023 | 
        
        
      
        
          | Lerner-Lam | 
          Arthur | 
          Columbia University, LDEO | 
          PASSCAL | 
          Member | 
          1999 | 
          2001 | 
        
        
      
        
          | Rodgers | 
          Arthur | 
          IGPP/Lawrence Livermore National Lab | 
          PASSCAL | 
          Member | 
          2006 | 
          2010 | 
        
        
      
        
          | Magnani | 
          Beatrice | 
          Southern Methodist Univesity | 
          PASSCAL | 
          Member | 
          2009 | 
          2011 | 
        
        
      
        
          | Magnani | 
          Beatrice | 
          Southern Methodist Univesity | 
          PASSCAL | 
          Member | 
          2017 | 
          2018 | 
        
        
      
        
          | Magnani | 
          Beatrice | 
          Southern Methodist Univesity | 
          PASSCAL | 
          Chair | 
          2019 | 
          2021 | 
        
        
      
        
          | Walter | 
          Bill | 
          IGPP/Lawrence Livermore National Lab | 
          PASSCAL | 
          Member | 
          2003 | 
          2005 | 
        
        
      
        
          | Schmandt | 
          Brandon | 
          University of New Mexico | 
          PASSCAL | 
          Member | 
          2017 | 
          2019 | 
        
        
      
        
          | Stump | 
          Brian | 
          Southern Methodist University | 
          PASSCAL | 
          Member | 
          1991 | 
          1995 | 
        
        
      
        
          | Beaudoin | 
          Bruce | 
          PASSCAL-NMT | 
          PASSCAL | 
          Observer | 
          2004 | 
          Present | 
        
        
      
        
          | Knapp | 
          Camelia | 
          University of South Carolina | 
          PASSCAL | 
          Member | 
          2004 | 
          2006 | 
        
        
      
        
          | Baru | 
          Chaitan | 
          University of California, San Diego | 
          PASSCAL | 
          Member | 
          2006 | 
          2008 | 
        
        
      
        
          | Thurber | 
          Clifford | 
          University of Wisconsin, Madison | 
          PASSCAL | 
          Member | 
          1995 | 
          1999 | 
        
        
      
        
          | Zelt | 
          Colin | 
          Rice University | 
          PASSCAL | 
          Member | 
          2003 | 
          2005 | 
        
        
      
        
          | Ebinger | 
          Cynthia | 
          Tulane University | 
          PASSCAL | 
          Member | 
          2011 | 
          2013 | 
        
        
      
        
          | James | 
          David | 
          Carnegie Institute of Washington, DTM | 
          PASSCAL | 
          Member | 
          1996 | 
          1999 | 
        
        
      
        
          | James | 
          David | 
          Carnegie Institute of Washington, DTM | 
          PASSCAL | 
          Member | 
          2002 | 
          2002 | 
        
        
      
        
          | James | 
          David | 
          Carnegie Institute of Washington, DTM | 
          PASSCAL | 
          Chair | 
          2003 | 
          2005 | 
        
        
      
        
          | Okaya | 
          David | 
          University of Southern California | 
          PASSCAL | 
          Member | 
          1989 | 
          1991 | 
        
        
      
        
          | Okaya | 
          David | 
          University of Southern California | 
          PASSCAL | 
          Member | 
          1999 | 
          2001 | 
        
        
      
        
          | Okaya | 
          David | 
          University of Southern California | 
          PASSCAL | 
          Member | 
          2014 | 
          2016 | 
        
        
      
        
          | Simpson | 
          David | 
          IRIS | 
          PASSCAL | 
          Member | 
          1990 | 
          1990 | 
        
        
      
        
          | Dosser | 
          Diane | 
          The University of Texas, El Paso | 
          PASSCAL | 
          Member | 
          1991 | 
          1993 | 
        
        
      
        
          | Shillington | 
          Donna | 
          Columbia University, LDEO | 
          PASSCAL | 
          Board Liaison | 
          2017 | 
          2018 | 
        
        
      
        
          | Christensen | 
          Doug | 
          University of Alaska, Fairbanks | 
          PASSCAL | 
          Member | 
          2015 | 
          2017 | 
        
        
      
        
          | MacAyeal | 
          Doug | 
          University of Chicago | 
          PASSCAL | 
          Member | 
          2009 | 
          2011 | 
        
        
      
        
          | Hauksson | 
          Egill | 
          California Institute of Technology | 
          PASSCAL | 
          Member | 
          1996 | 
          1998 | 
        
        
      
        
          | Sandvol | 
          Eric | 
          University of Missouri, Columbia | 
          PASSCAL | 
          Member | 
          2018 | 
          2020 | 
        
        
      
        
          | Humphreys | 
          Eugene | 
          University of Oregon | 
          PASSCAL | 
          Member | 
          1992 | 
          1994 | 
        
        
      
        
          | Vernon | 
          Frank | 
          University of California, San Diego | 
          PASSCAL | 
          Member | 
          1991 | 
          1995 | 
        
        
      
        
          | Vernon | 
          Frank | 
          University of California, San Diego | 
          PASSCAL | 
          Observer | 
          2005 | 
          2011 | 
        
        
      
        
          | Followill | 
          Frederick | 
          Lawrence Livermore National Laboratory | 
          PASSCAL | 
          Member | 
          1995 | 
          1997 | 
        
        
      
        
          | Kaip | 
          Galen | 
          The University of Texas, El Paso | 
          PASSCAL | 
          Observer | 
          2017 | 
          Present | 
        
        
      
        
          | Pavlis | 
          Gary | 
          Indiana University | 
          PASSCAL | 
          Chair | 
          1993 | 
          1995 | 
        
        
      
        
          | Abers | 
          Geoffrey | 
          Cornell University | 
          PASSCAL | 
          Member | 
          2000 | 
          2002 | 
        
        
      
        
          | McMechan | 
          George | 
          The University of Texas, Dallas | 
          PASSCAL | 
          Member | 
          1986 | 
          1988 | 
        
        
      
        
          | Zandt | 
          George | 
          The University of Arizona | 
          PASSCAL | 
          Member | 
          1992 | 
          1994 | 
        
        
      
        
          | Zandt | 
          George | 
          The University of Arizona | 
          PASSCAL | 
          Member | 
          2006 | 
          2008 | 
        
        
      
        
          | Bollinger | 
          Gilbert | 
          Virginia Tech | 
          PASSCAL | 
          Member | 
          1987 | 
          1988 | 
        
        
      
        
          | Walter | 
          Jake | 
          The University of Texas, Austin | 
          PASSCAL | 
          Member | 
          2015 | 
          2017 | 
        
        
      
        
          | Gridley | 
          James | 
          IRIS/PASSCAL Instrument Center | 
          PASSCAL | 
          Progr. Manager | 
          2010 | 
          2013 | 
        
        
      
        
          | Lawrence | 
          Jesse | 
          Stanford University | 
          PASSCAL | 
          Member | 
          2009 | 
          2012 | 
        
        
      
        
          | Fowler | 
          Jim | 
          IRIS/PASSCAL Instrument Center | 
          PASSCAL | 
          Progr. Manager | 
          1985 | 
          2011 | 
        
        
      
        
          | Gomberg | 
          Joan | 
          USGS, University of Washington | 
          PASSCAL | 
          Member | 
          2001 | 
          2003 | 
        
        
      
        
          | Collins | 
          John | 
          Woods Hole Oceanographic Institution | 
          PASSCAL | 
          Member | 
          2002 | 
          2004 | 
        
        
      
        
          | Collins | 
          John | 
          Woods Hole Oceanographic Institution | 
          PASSCAL | 
          Member | 
          2006 | 
          2007 | 
        
        
      
        
          | Hole | 
          John | 
          Virginia Polytechnic Institute & SU | 
          PASSCAL | 
          Member | 
          2003 | 
          2005 | 
        
        
      
        
          | Hole | 
          John | 
          Virginia Polytechnic Institute & SU | 
          PASSCAL | 
          Member | 
          2013 | 
          2015 | 
        
        
      
        
          | Louie | 
          John | 
          University of Nevada, Reno | 
          PASSCAL | 
          Member | 
          2001 | 
          2003 | 
        
        
      
        
          | Nabelek | 
          John | 
          Oregon State University | 
          PASSCAL | 
          Member | 
          1994 | 
          1996 | 
        
        
      
        
          | Allstadt | 
          Kate | 
          US Geological Survey, Golden | 
          PASSCAL | 
          Member | 
          2016 | 
          2018 | 
        
        
      
        
          | Miller | 
          Kate | 
          Texas A&M University | 
          PASSCAL | 
          Member | 
          1998 | 
          2000 | 
        
        
      
        
          | Keranen | 
          Katie | 
          Cornell University | 
          PASSCAL | 
          Member | 
          2011 | 
          2013 | 
        
        
      
        
          | Aki | 
          Kelti | 
          University of Southern California | 
          PASSCAL | 
          Member | 
          1986 | 
          1987 | 
        
        
      
        
          | Dueker | 
          Ken | 
          Wyoming University | 
          PASSCAL | 
          Member | 
          1998 | 
          2000 | 
        
        
      
        
          | Larner | 
          Kenneth | 
          Western Geophysical Company | 
          PASSCAL | 
          Member | 
          1986 | 
          1986 | 
        
        
      
        
          | Anderson | 
          Kent | 
          IRIS | 
          PASSCAL | 
          Progr. Manager | 
          2014 | 
          Present | 
        
        
      
        
          | Key | 
          Kerry | 
          Columbia University, LDEO | 
          PASSCAL | 
          Ex Officio | 
          2022 | 
          2023 | 
        
        
      
        
          | Marfurt | 
          Kurt | 
          University of Oklahoma | 
          PASSCAL | 
          Member | 
          2000 | 
          2002 | 
        
        
      
        
          | Wagner | 
          Lara | 
          Carnegie Institution for Science | 
          PASSCAL | 
          Member | 
          2008 | 
          2010 | 
        
        
      
        
          | Wagner | 
          Lara | 
          Carnegie Institution for Science | 
          PASSCAL | 
          Chair | 
          2015 | 
          2017 | 
        
        
      
        
          | Braile | 
          Larry | 
          Purdue University | 
          PASSCAL | 
          Member | 
          1986 | 
          1986 | 
        
        
      
        
          | Braile | 
          Larry | 
          Purdue University | 
          PASSCAL | 
          Chair | 
          1987 | 
          1990 | 
        
        
      
        
          | Braile | 
          Larry | 
          Purdue University | 
          PASSCAL | 
          Member | 
          1991 | 
          1991 | 
        
        
      
        
          | Liberty | 
          Lee | 
          Boise State University | 
          PASSCAL | 
          Member | 
          2010 | 
          2012 | 
        
        
      
        
          | Liberty | 
          Lee | 
          Boise State University | 
          PASSCAL | 
          Member | 
          2019 | 
          2021 | 
        
        
      
        
          | Alvarez | 
          Marcos | 
          IRIS | 
          PASSCAL | 
          Observer | 
          2004 | 
          2010 | 
        
        
      
        
          | Leidig | 
          Mark | 
          Weston Geophysical Corporation | 
          PASSCAL | 
          Member | 
          2015 | 
          2017 | 
        
        
      
        
          | Fouch | 
          Matthew | 
          Carnegie Institution Of Washington, DTM | 
          PASSCAL | 
          Member | 
          2004 | 
          2009 | 
        
        
      
        
          | Anderson | 
          Megan | 
          Colorado College | 
          PASSCAL | 
          Member | 
          2013 | 
          2015 | 
        
        
      
        
          | Miller | 
          Megan | 
          University of Southern California | 
          PASSCAL | 
          Member | 
          2011 | 
          2013 | 
        
        
      
        
          | West | 
          Michael | 
          University of Alaska, Fairbanks | 
          PASSCAL | 
          Member | 
          2012 | 
          2014 | 
        
        
      
        
          | Davis | 
          Paul | 
          University Of California, Los Angeles | 
          PASSCAL | 
          Member | 
          2009 | 
          2011 | 
        
        
      
        
          | Earle | 
          Paul | 
          US Geological Survery, Denver | 
          PASSCAL | 
          Member | 
          2006 | 
          2008 | 
        
        
      
        
          | Silver (D) | 
          Paul | 
          Carnegie Institution of Washington, DTM | 
          PASSCAL | 
          Member | 
          1988 | 
          1990 | 
        
        
      
        
          | Winberry | 
          Paul | 
          Central Washington University | 
          PASSCAL | 
          Member | 
          2018 | 
          2020 | 
        
        
      
        
          | Winberry | 
          Paul | 
          Central Washington University | 
          PASSCAL | 
          Ex Officio | 
          2019 | 
          2022 | 
        
        
      
        
          | Malin | 
          Peter | 
          University of Southern California | 
          PASSCAL | 
          Member | 
          1987 | 
          1988 | 
        
        
      
        
          | Russo | 
          Ray | 
          University of Florida | 
          PASSCAL | 
          Member | 
          2006 | 
          2008 | 
        
        
      
        
          | Allen | 
          Richard | 
          University of California, Berkeley | 
          PASSCAL | 
          Member | 
          2008 | 
          2008 | 
        
        
      
        
          | Allen | 
          Richard | 
          University of California, Berkeley | 
          PASSCAL | 
          Chair | 
          2009 | 
          2011 | 
        
        
      
        
          | Williams | 
          Richard | 
          The University of Tennessee | 
          PASSCAL | 
          Member | 
          1994 | 
          1996 | 
        
        
      
        
          | Aster | 
          Rick | 
          Colorado State University | 
          PASSCAL | 
          Observer | 
          2004 | 
          2013 | 
        
        
      
        
          | Aster | 
          Rick | 
          Colorado State University | 
          PASSCAL | 
          Ex Officio | 
          2015 | 
          Present | 
        
        
      
        
          | Phinney | 
          Robert | 
          Princeton University | 
          PASSCAL | 
          Chair | 
          1986 | 
          1986 | 
        
        
      
        
          | Phinney | 
          Robert | 
          Princeton University | 
          PASSCAL | 
          Member | 
          1987 | 
          1987 | 
        
        
      
        
          | Smith | 
          Robert | 
          The University of Utah | 
          PASSCAL | 
          Member | 
          1986 | 
          1993 | 
        
        
      
        
          | Evans | 
          Rob L. | 
          Woods Hole Oceanographic Institution | 
          PASSCAL | 
          Member | 
          2019 | 
          2022 | 
        
        
      
        
          | Johnson | 
          Roy | 
          The University of Arizona | 
          PASSCAL | 
          Member | 
          1997 | 
          1998 | 
        
        
      
        
          | Johnson | 
          Roy | 
          The University of Arizona | 
          PASSCAL | 
          Chair | 
          1999 | 
          2002 | 
        
        
      
        
          | Hansen | 
          Samantha | 
          The University of Alabama | 
          PASSCAL | 
          Member | 
          2014 | 
          2016 | 
        
        
      
        
          | Hansen | 
          Samantha | 
          The University of Alabama | 
          PASSCAL | 
          Chair | 
          2022 | 
          2023 | 
        
        
      
        
          | Moran | 
          Seth | 
          USGS, Cascadia Volcano Observatory | 
          PASSCAL | 
          Member | 
          2010 | 
          2011 | 
        
        
      
        
          | Moran | 
          Seth | 
          USGS, Cascadia Volcano Observatory | 
          PASSCAL | 
          Chair | 
          2012 | 
          2014 | 
        
        
      
        
          | Moran | 
          Seth | 
          USGS, Cascadia Volcano Observatory | 
          PASSCAL | 
          Member | 
          2015 | 
          2015 | 
        
        
      
        
          | O'Neel | 
          Shad | 
          US Geological Survey, Alaska | 
          PASSCAL | 
          Member | 
          2012 | 
          2014 | 
        
        
      
        
          | Rondenay | 
          Stephane | 
          University of Bergen, Norway | 
          PASSCAL | 
          Member | 
          2005 | 
          2008 | 
        
        
      
        
          | Rondenay | 
          Stephane | 
          University of Bergen, Norway | 
          PASSCAL | 
          Member | 
          2010 | 
          2013 | 
        
        
      
        
          | Harder | 
          Steve | 
          The University of Texas, El Paso | 
          PASSCAL | 
          Observer | 
          2005 | 
          2017 | 
        
        
      
        
          | Holbrook | 
          Steve | 
          Virginia Tech | 
          PASSCAL | 
          Member | 
          2016 | 
          2018 | 
        
        
      
        
          | Roecker | 
          Steve | 
          Rensselaer Polytechnic Institute | 
          PASSCAL | 
          Member | 
          1999 | 
          2004 | 
        
        
      
        
          | Bilek | 
          Susan | 
          New Mexico Tech | 
          PASSCAL | 
          Observer | 
          2013 | 
          Present | 
        
        
      
        
          | Schwartz | 
          Susan | 
          University of California, Santa Cruz | 
          PASSCAL | 
          Member | 
          2016 | 
          2017 | 
        
        
      
        
          | Schwartz | 
          Susan | 
          University of California, Santa Cruz | 
          PASSCAL | 
          Chair | 
          2018 | 
          2018 | 
        
        
      
        
          | Schwartz | 
          Susan | 
          University of California, Santa Cruz | 
          PASSCAL | 
          Board Liaison | 
          2019 | 
          2021 | 
        
        
      
        
          | Clarke | 
          Tedd | 
          ExxonMobile Geophysical Operations | 
          PASSCAL | 
          Member | 
          2011 | 
          2014 | 
        
        
      
        
          | Brocher | 
          Thomas | 
          US Geological Survey, Menlo Park | 
          PASSCAL | 
          Member | 
          1991 | 
          1992 | 
        
        
      
        
          | Henyey | 
          Thomas | 
          University of Southern California | 
          PASSCAL | 
          Member | 
          1992 | 
          1994 | 
        
        
      
        
          | Pratt | 
          Thomas | 
          US Geological Survey, Reston | 
          PASSCAL | 
          Member | 
          1995 | 
          1997 | 
        
        
      
        
          | Pratt | 
          Thomas | 
          US Geological Survey, Reston | 
          PASSCAL | 
          Member | 
          2007 | 
          2009 | 
        
        
      
        
          | Owens | 
          Tom | 
          University of South Carolina | 
          PASSCAL | 
          Member | 
          1989 | 
          1990 | 
        
        
      
        
          | Owens | 
          Tom | 
          University of South Carolina | 
          PASSCAL | 
          Member | 
          1999 | 
          2001 | 
        
        
      
        
          | Mooney | 
          Walter | 
          US Geological Survey, Menlo Park | 
          PASSCAL | 
          Member | 
          1987 | 
          1990 | 
        
        
      
        
          | Mooney | 
          Walter | 
          US Geological Survey, Menlo Park | 
          PASSCAL | 
          Member | 
          1996 | 
          1998 | 
        
        
      
        
          | Ellsworth | 
          William | 
          US Geological Survey, Menlo Park | 
          PASSCAL | 
          Member | 
          1986 | 
          1986 | 
        
        
      
        
          | Menke | 
          William | 
          Columbia University | 
          PASSCAL | 
          Member | 
          1986 | 
          1989 | 
        
        
      
        
          | Menke | 
          William | 
          Columbia University | 
          PASSCAL | 
          Member | 
          1997 | 
          1997 | 
        
        
      
        
          | Stevenson | 
          William | 
          US Geological Survey, Denver | 
          PASSCAL | 
          Member | 
          2004 | 
          2006 | 
        
        
      
        
          | Eilon | 
          Zach | 
          University of California, Santa Barbara | 
          PASSCAL | 
          Member | 
          2018 | 
          2020 | 
        
        
      
        
          | Sweet | 
          Justin | 
          IRIS | 
          PASSCAL | 
          IRIS Staff | 
          2014 | 
          Present | 
        
        
      
        
          | Kruse | 
          Sarah | 
          University of South Florida | 
          PASSCAL | 
          Member | 
          2019 | 
          2019 | 
        
        
      
        
          | Thelen | 
          Wes | 
          USGS, CVO | 
          PASSCAL | 
          Member | 
          2019 | 
          2021 | 
        
        
      
        
          | Bartholomaus | 
          Tim | 
          University of Idaho | 
          PASSCAL | 
          Member | 
          2021 | 
          2023 | 
        
        
      
        
          | Karplus | 
          Marianne | 
          University of Texas, El Paso | 
          PASSCAL | 
          Member | 
          2020 | 
          2022 | 
        
        
      
        
          | Parsekian | 
          Andy | 
          University of Wyoming | 
          PASSCAL | 
          Member | 
          2020 | 
          2023 | 
        
        
      
        
          | Bennington | 
          Ninfa | 
          USGS, HVO | 
          PASSCAL | 
          Ex Officio | 
          2019 | 
          2021 | 
        
        
      
        
          | Bezada | 
          Max | 
          University of Minnesota - Twin Cities | 
          PASSCAL | 
          Member | 
          2021 | 
          2023 | 
        
        
      
        
          | Shen | 
          Weisen | 
          Stony Brook University | 
          PASSCAL | 
          Member | 
          2021 | 
          2023 | 
        
        
      
        
          | Wolin | 
          Emily | 
          US Geological Survey | 
          PASSCAL | 
          Member | 
          2022 | 
          2023 | 
        
        
      
        
          | Lipovsky | 
          Brad | 
          University of Washington | 
          PASSCAL | 
          Member | 
          2022 | 
          2023 |