Todd Ericksen
Todd Ericksen is a Geodetic Engineer in the Earthquake Science Center.
Science and Products
High-resolution seismic imaging data acquired in 2021 across a trace of the San Andreas Fault at Mee Ranch, Monterey County, California High-resolution seismic imaging data acquired in 2021 across a trace of the San Andreas Fault at Mee Ranch, Monterey County, California
In April of 2021, the U.S. Geological Survey conducted a high-resolution seismic survey at Mee Ranch in Monterey County, California. Both passive- and active-source seismic data were acquired using DTCC SmartSolo 3-component nodal seismograph systems ("nodes"), which continuously recorded data at rates up to 2000 samples per second. For passive-source acquisition, a 6x5 grid of nodes was...
Filter Total Items: 13
Summary of Creepmeter Data from 1980 to 2020—Measurements Spanning the Hayward, Calaveras, and San Andreas Faults in Northern and Central California Summary of Creepmeter Data from 1980 to 2020—Measurements Spanning the Hayward, Calaveras, and San Andreas Faults in Northern and Central California
This report is an update to the presentation by Schulz (1989) introducing potential users to the creepmeter data collected between the publication of Schulz’s report and mid-2020. The creepmeter network monitors aseismic, surface slip at various locations on the Hayward, Calaveras, and San Andreas Faults in northern and central California. There are different designs of creepmeters and...
Authors
John Langbein, Roger Bilham, Hollice Snyder, Todd Ericksen
Rapid shallow megathrust afterslip from the 2021 M8.2 Chignik, Alaska earthquake revealed by seafloor geodesy Rapid shallow megathrust afterslip from the 2021 M8.2 Chignik, Alaska earthquake revealed by seafloor geodesy
The shallower portions of subduction zone megathrust faults host Earth’s most hazardous tsunamigenic earthquakes, yet understanding how and when they slip remains elusive because of challenges making seafloor observations. We performed Global Navigation Satellite System Acoustic seafloor geodetic surveys before and ~2.5 months after the 29 July 2021 Mw (moment magnitude) 8.2 Chignik...
Authors
Benjamin Brooks, Dara Goldberg, John DeSanto, Todd Ericksen, Spahr Webb, Scott Nooner, C. David Chadwell, James Foster, Sarah Minson, Robert C. Witter, Peter J. Haeussler, Jeffery Freymueller, William Barnhart, Johanna Nevitt
Robust earthquake early warning at a fraction of the cost: ASTUTI Costa Rica Robust earthquake early warning at a fraction of the cost: ASTUTI Costa Rica
We show that a fixed smartphone network can provide robust Earthquake Early Warning for at least two orders of magnitude less cost than scientific-grade networks. Our software and cloud-based data architecture that we have constructed for the Alerta Sismica Temprana Utilizando Teléfonos Inteligentes (ASTUTI; Earthquake Early Warning Utilizing Smartphones) network in Costa Rica is easily...
Authors
Benjamin Brooks, Marino Protti, Todd Ericksen, Julian Bunn, Floribeth Vega, Elizabeth Cochran, Chris Duncan, Jonathan Avery, Sarah Minson, Esteban Chaves, Juan Carlos Baez, James Foster, Craig Glennie
Documentation of Surface Fault Rupture and Ground‐Deformation Features Produced by the 4 and 5 July 2019 Mw 6.4 and Mw 7.1 Ridgecrest Earthquake Sequence Documentation of Surface Fault Rupture and Ground‐Deformation Features Produced by the 4 and 5 July 2019 Mw 6.4 and Mw 7.1 Ridgecrest Earthquake Sequence
The MwMw 6.4 and MwMw 7.1 Ridgecrest earthquake sequence occurred on 4 and 5 July 2019 within the eastern California shear zone of southern California. Both events produced extensive surface faulting and ground deformation within Indian Wells Valley and Searles Valley. In the weeks following the earthquakes, more than six dozen scientists from government, academia, and the private sector...
Authors
Daniel Ponti, James Blair, Rosa M, Kate Thomas, Alexandra Pickering, Sinan Akciz, Stephen Angster, Jean-Philipe Avouac, Jeffrey Bachhuber, Steven Bacon, Nicolas Barth, S. Bennett, Kelly Blake, Stephan Bork, Benjamin Brooks, Thomas Bullard, Paul Burgess, Colin Chupik, Timothy Dawson, Michael DeFrisco, Jaime Delano, Stephen DeLong, James Dolan, Andrea Donnellan, Christopher DuRoss, Todd Ericksen, Erik Frost, Gareth Funning, Ryan Gold, Nicholas A Graehl, Carlos Gutierrez, Elizabeth Haddon, Alexandra Hatem, John Helms, Janis Hernandez, Christopher Hitchcock, Peter Holland, Kenneth Hudnut, Katherine Kendrick, Richard Koehler, Ozgur Kozaci, Tyler Ladinsky, Robert Leeper, Christopher Madugo, Maxime Mareschal, James McDonald, Devin McPhillips, Christopher Milliner, Daniel Mongovin, Alexander Morelan, Stephanie Nale, Johanna Nevitt, Matt O’Neal, Brian Olsen, Michael Oskin, Salena Padilla, Jason Patton, Belle Philibosian, Ian Pierce, Cynthia Pridmore, Nathaniel Roth, David Sandwell, Katherine M. Scharer, Gordon Seitz, Drake Singleton, Bridget Smith-Konter, Eleanor Spangler, Brian Swanson, Jessica Thompson Jobe, Jerome Treiman, Francesca Valencia, Joshua Vanderwal, Alana Williams, Xiaohua Xu, Judith Zachariasen, Jade Zimmerman, Robert Zinke
Rapid geodetic observations of spatiotemporally varying postseismic deformation following the Ridgecrest earthquake sequence: The U.S. Geological Survey response Rapid geodetic observations of spatiotemporally varying postseismic deformation following the Ridgecrest earthquake sequence: The U.S. Geological Survey response
The U.S. Geological Survey’s geodetic response to the 4–5 July 2019 (Pacific time) Ridgecrest earthquake sequence comprised primarily the installation and/or reoccupation of Global Navigation Satellite System (GNSS) monumentation. Our response focused primarily on the United States’ Navy’s China Lake Naval Air Weapons Station base (NAWSCL). This focus was because much of the surface...
Authors
Benjamin Brooks, Jessica Murray, Jerry Svarc, Ellen Phillips, Ryan Clayton Turner, Mark Murray, Todd Ericksen, Kang Wang, Sarah Minson, Roland Burgmann, Frederick Pollitz, Kenneth Hudnut, Johanna Nevitt, Evelyn Roeloffs, Janis Hernandez, Brian Olson
Mechanics of near-field deformation during co- and post-seismic shallow fault slip Mechanics of near-field deformation during co- and post-seismic shallow fault slip
Poor knowledge of how faults slip and distribute deformation in the shallow crust hinders efforts to mitigate hazards where faults increasingly intersect with the expanding global population at Earth’s surface. Here we analyze two study sites along the 2014 M 6.0 South Napa, California, earthquake rupture, each dominated by either co- or post-seismic shallow fault slip. We combine mobile...
Authors
Johanna Nevitt, Benjamin Brooks, Rufus Catchings, Mark Goldman, Todd Ericksen, Craig Glennie
Illuminating subduction zone rheological properties in the wake of a giant earthquake Illuminating subduction zone rheological properties in the wake of a giant earthquake
Deformation associated with plate convergence at subduction zones is accommodated by a complex system involving fault slip and viscoelastic flow. These processes have proven difficult to disentangle. The 2010 Mw 8.8 Maule earthquake occurred close to the Chilean coast within a dense network of continuously recording Global Positioning System stations, which provide a comprehensive...
Authors
Jonathan Weiss, Qiang Qiu, Sylvain Barbot, Tim Wright, James Foster, Alexander Saunders, Benjamin Brooks, Michael Bevis, Eric Kendrick, Todd Ericksen, Jonathan Avery, Robert Smalley, Sergio Cimbaro, Luis Lenzano, Jorge Baron, Juan Carlos Báez, Arturo Echalar
Preliminary report on engineering and geological effects of the July 2019 Ridgecrest earthquake sequence Preliminary report on engineering and geological effects of the July 2019 Ridgecrest earthquake sequence
The Ridgecrest Earthquake sequence included a foreshock event on July 4 2019 (M6.4) and a M7.1 mainshock event on July 5 2019. These events occurred in the Eastern California Shear Zone, near Indian Wells Valley, south of China Lake and west of Searles Valley. GEER has partnered with several organizations to collect perishable data and document the important impacts of these events...
Authors
Scott Brandenberg, Pengfei Wang, Chukwuebuka Nweke, Kenneth Hudson, Silvia Mazzoni, Yousef Bozorgnia, Kenneth Hudnut, Craig Davis, Sean Ahdi, Farzin Zareian, Jawad Fayaz, Richard Koehler, Colin Chupik, Ian Pierce, Alana Williams, Sinan Akciz, Martin Hudson, Tadahiro Kishida, Benjamin Brooks, Ryan Gold, Daniel Ponti, Katherine M. Scharer, Devin McPhillips, Christopher DuRoss, Todd Ericksen, Janis Hernandez, Jay Patton, Brian Olson, Timothy Dawson, Jerome Treiman, Kelly Blake, Jeffrey Buchhuber, Chris Madugo, Joseph Sun, Andrea Donnellan, Greg Lyzenga, Erik Conway
High resolution measurement of levee subsidence related to energy infrastructure in the Sacramento-San Joaquin Delta High resolution measurement of levee subsidence related to energy infrastructure in the Sacramento-San Joaquin Delta
We assess flood overtopping potential (when flood water elevation exceeds levee elevation) to the levees surrounding the islands in the interior of California's Sacramento-San Joaquin Delta. Because critical natural gas infrastructure is susceptible to overtopping-related disruption, we focus our analysis on regions that are crossed by the network of the state's natural gas pipelines. We...
Authors
Benjamin Brooks, Jennifer Telling, Todd Leroy Ericksen, Craig Glennie, Noah Knowles, Daniel Cayan, Darren Hauser, Adam LeWinter
Buried shallow fault slip from the South Napa earthquake revealed by near-field geodesy Buried shallow fault slip from the South Napa earthquake revealed by near-field geodesy
Earthquake-related fault slip in the upper hundreds of meters of Earth’s surface has remained largely unstudied because of challenges measuring deformation in the near field of a fault rupture. We analyze centimeter-scale accuracy mobile laser scanning (MLS) data of deformed vine rows within ±300 m of the principal surface expression of the M (magnitude) 6.0 2014 South Napa earthquake...
Authors
Benjamin Brooks, Sarah Minson, Craig Glennie, Johanna Nevitt, Timothy Dawson, Ron Rubin, Todd Ericksen, David Lockner, Kenneth Hudnut, Victoria E. Langenheim, Andrew Lutz, Jessica Murray, David Schwartz, Dana Zaccone
Hawaiian fissure fountains: Quantifying vent and shallow conduit geometry, episode 1 of the 1969-1974 Mauna Ulu eruption Hawaiian fissure fountains: Quantifying vent and shallow conduit geometry, episode 1 of the 1969-1974 Mauna Ulu eruption
Geometries of shallow magmatic pathways feeding volcanic eruptions are poorly constrained, yet many key interpretations about eruption dynamics depend on knowledge of these geometries. Direct quantification is difficult because vents typically become blocked with lava at the end of eruptions. Indirect geophysical techniques have shed light on some volcanic conduit geometries, but the...
Authors
Carolyn Parcheta, Sarah Fagents, Donald A. Swanson, Bruce Houghton, Todd Ericksen
Key recovery factors for the August 24, 2014, South Napa Earthquake Key recovery factors for the August 24, 2014, South Napa Earthquake
Through discussions between the Federal Emergency Management Agency (FEMA) and the U.S. Geological Survey (USGS) following the South Napa earthquake, it was determined that several key decision points would be faced by FEMA for which additional information should be sought and provided by USGS and its partners. This report addresses the four tasks that were agreed to. These tasks are (1)
Authors
Kenneth Hudnut, Thomas Brocher, Carol Prentice, John Boatwright, Benjamin Brooks, Brad Aagaard, J. Blair, Jon Fletcher, Jemile Erdem, Charles Wicks, Jessica Murray, Fred F. Pollitz, John Langbein, Jerry Svarc, David Schwartz, Daniel Ponti, Suzanne Hecker, Stephen DeLong, Carla Rosa, Brenda Jones, Rynn Lamb, Anne Rosinski, Timothy McCrink, Timothy Dawson, Gordon G. Seitz, Craig Glennie, Darren Hauser, Todd Ericksen, Dan Mardock, Don Hoirup, Jonathan Bray, Ron Rubin
Science and Products
High-resolution seismic imaging data acquired in 2021 across a trace of the San Andreas Fault at Mee Ranch, Monterey County, California High-resolution seismic imaging data acquired in 2021 across a trace of the San Andreas Fault at Mee Ranch, Monterey County, California
In April of 2021, the U.S. Geological Survey conducted a high-resolution seismic survey at Mee Ranch in Monterey County, California. Both passive- and active-source seismic data were acquired using DTCC SmartSolo 3-component nodal seismograph systems ("nodes"), which continuously recorded data at rates up to 2000 samples per second. For passive-source acquisition, a 6x5 grid of nodes was...
Filter Total Items: 13
Summary of Creepmeter Data from 1980 to 2020—Measurements Spanning the Hayward, Calaveras, and San Andreas Faults in Northern and Central California Summary of Creepmeter Data from 1980 to 2020—Measurements Spanning the Hayward, Calaveras, and San Andreas Faults in Northern and Central California
This report is an update to the presentation by Schulz (1989) introducing potential users to the creepmeter data collected between the publication of Schulz’s report and mid-2020. The creepmeter network monitors aseismic, surface slip at various locations on the Hayward, Calaveras, and San Andreas Faults in northern and central California. There are different designs of creepmeters and...
Authors
John Langbein, Roger Bilham, Hollice Snyder, Todd Ericksen
Rapid shallow megathrust afterslip from the 2021 M8.2 Chignik, Alaska earthquake revealed by seafloor geodesy Rapid shallow megathrust afterslip from the 2021 M8.2 Chignik, Alaska earthquake revealed by seafloor geodesy
The shallower portions of subduction zone megathrust faults host Earth’s most hazardous tsunamigenic earthquakes, yet understanding how and when they slip remains elusive because of challenges making seafloor observations. We performed Global Navigation Satellite System Acoustic seafloor geodetic surveys before and ~2.5 months after the 29 July 2021 Mw (moment magnitude) 8.2 Chignik...
Authors
Benjamin Brooks, Dara Goldberg, John DeSanto, Todd Ericksen, Spahr Webb, Scott Nooner, C. David Chadwell, James Foster, Sarah Minson, Robert C. Witter, Peter J. Haeussler, Jeffery Freymueller, William Barnhart, Johanna Nevitt
Robust earthquake early warning at a fraction of the cost: ASTUTI Costa Rica Robust earthquake early warning at a fraction of the cost: ASTUTI Costa Rica
We show that a fixed smartphone network can provide robust Earthquake Early Warning for at least two orders of magnitude less cost than scientific-grade networks. Our software and cloud-based data architecture that we have constructed for the Alerta Sismica Temprana Utilizando Teléfonos Inteligentes (ASTUTI; Earthquake Early Warning Utilizing Smartphones) network in Costa Rica is easily...
Authors
Benjamin Brooks, Marino Protti, Todd Ericksen, Julian Bunn, Floribeth Vega, Elizabeth Cochran, Chris Duncan, Jonathan Avery, Sarah Minson, Esteban Chaves, Juan Carlos Baez, James Foster, Craig Glennie
Documentation of Surface Fault Rupture and Ground‐Deformation Features Produced by the 4 and 5 July 2019 Mw 6.4 and Mw 7.1 Ridgecrest Earthquake Sequence Documentation of Surface Fault Rupture and Ground‐Deformation Features Produced by the 4 and 5 July 2019 Mw 6.4 and Mw 7.1 Ridgecrest Earthquake Sequence
The MwMw 6.4 and MwMw 7.1 Ridgecrest earthquake sequence occurred on 4 and 5 July 2019 within the eastern California shear zone of southern California. Both events produced extensive surface faulting and ground deformation within Indian Wells Valley and Searles Valley. In the weeks following the earthquakes, more than six dozen scientists from government, academia, and the private sector...
Authors
Daniel Ponti, James Blair, Rosa M, Kate Thomas, Alexandra Pickering, Sinan Akciz, Stephen Angster, Jean-Philipe Avouac, Jeffrey Bachhuber, Steven Bacon, Nicolas Barth, S. Bennett, Kelly Blake, Stephan Bork, Benjamin Brooks, Thomas Bullard, Paul Burgess, Colin Chupik, Timothy Dawson, Michael DeFrisco, Jaime Delano, Stephen DeLong, James Dolan, Andrea Donnellan, Christopher DuRoss, Todd Ericksen, Erik Frost, Gareth Funning, Ryan Gold, Nicholas A Graehl, Carlos Gutierrez, Elizabeth Haddon, Alexandra Hatem, John Helms, Janis Hernandez, Christopher Hitchcock, Peter Holland, Kenneth Hudnut, Katherine Kendrick, Richard Koehler, Ozgur Kozaci, Tyler Ladinsky, Robert Leeper, Christopher Madugo, Maxime Mareschal, James McDonald, Devin McPhillips, Christopher Milliner, Daniel Mongovin, Alexander Morelan, Stephanie Nale, Johanna Nevitt, Matt O’Neal, Brian Olsen, Michael Oskin, Salena Padilla, Jason Patton, Belle Philibosian, Ian Pierce, Cynthia Pridmore, Nathaniel Roth, David Sandwell, Katherine M. Scharer, Gordon Seitz, Drake Singleton, Bridget Smith-Konter, Eleanor Spangler, Brian Swanson, Jessica Thompson Jobe, Jerome Treiman, Francesca Valencia, Joshua Vanderwal, Alana Williams, Xiaohua Xu, Judith Zachariasen, Jade Zimmerman, Robert Zinke
Rapid geodetic observations of spatiotemporally varying postseismic deformation following the Ridgecrest earthquake sequence: The U.S. Geological Survey response Rapid geodetic observations of spatiotemporally varying postseismic deformation following the Ridgecrest earthquake sequence: The U.S. Geological Survey response
The U.S. Geological Survey’s geodetic response to the 4–5 July 2019 (Pacific time) Ridgecrest earthquake sequence comprised primarily the installation and/or reoccupation of Global Navigation Satellite System (GNSS) monumentation. Our response focused primarily on the United States’ Navy’s China Lake Naval Air Weapons Station base (NAWSCL). This focus was because much of the surface...
Authors
Benjamin Brooks, Jessica Murray, Jerry Svarc, Ellen Phillips, Ryan Clayton Turner, Mark Murray, Todd Ericksen, Kang Wang, Sarah Minson, Roland Burgmann, Frederick Pollitz, Kenneth Hudnut, Johanna Nevitt, Evelyn Roeloffs, Janis Hernandez, Brian Olson
Mechanics of near-field deformation during co- and post-seismic shallow fault slip Mechanics of near-field deformation during co- and post-seismic shallow fault slip
Poor knowledge of how faults slip and distribute deformation in the shallow crust hinders efforts to mitigate hazards where faults increasingly intersect with the expanding global population at Earth’s surface. Here we analyze two study sites along the 2014 M 6.0 South Napa, California, earthquake rupture, each dominated by either co- or post-seismic shallow fault slip. We combine mobile...
Authors
Johanna Nevitt, Benjamin Brooks, Rufus Catchings, Mark Goldman, Todd Ericksen, Craig Glennie
Illuminating subduction zone rheological properties in the wake of a giant earthquake Illuminating subduction zone rheological properties in the wake of a giant earthquake
Deformation associated with plate convergence at subduction zones is accommodated by a complex system involving fault slip and viscoelastic flow. These processes have proven difficult to disentangle. The 2010 Mw 8.8 Maule earthquake occurred close to the Chilean coast within a dense network of continuously recording Global Positioning System stations, which provide a comprehensive...
Authors
Jonathan Weiss, Qiang Qiu, Sylvain Barbot, Tim Wright, James Foster, Alexander Saunders, Benjamin Brooks, Michael Bevis, Eric Kendrick, Todd Ericksen, Jonathan Avery, Robert Smalley, Sergio Cimbaro, Luis Lenzano, Jorge Baron, Juan Carlos Báez, Arturo Echalar
Preliminary report on engineering and geological effects of the July 2019 Ridgecrest earthquake sequence Preliminary report on engineering and geological effects of the July 2019 Ridgecrest earthquake sequence
The Ridgecrest Earthquake sequence included a foreshock event on July 4 2019 (M6.4) and a M7.1 mainshock event on July 5 2019. These events occurred in the Eastern California Shear Zone, near Indian Wells Valley, south of China Lake and west of Searles Valley. GEER has partnered with several organizations to collect perishable data and document the important impacts of these events...
Authors
Scott Brandenberg, Pengfei Wang, Chukwuebuka Nweke, Kenneth Hudson, Silvia Mazzoni, Yousef Bozorgnia, Kenneth Hudnut, Craig Davis, Sean Ahdi, Farzin Zareian, Jawad Fayaz, Richard Koehler, Colin Chupik, Ian Pierce, Alana Williams, Sinan Akciz, Martin Hudson, Tadahiro Kishida, Benjamin Brooks, Ryan Gold, Daniel Ponti, Katherine M. Scharer, Devin McPhillips, Christopher DuRoss, Todd Ericksen, Janis Hernandez, Jay Patton, Brian Olson, Timothy Dawson, Jerome Treiman, Kelly Blake, Jeffrey Buchhuber, Chris Madugo, Joseph Sun, Andrea Donnellan, Greg Lyzenga, Erik Conway
High resolution measurement of levee subsidence related to energy infrastructure in the Sacramento-San Joaquin Delta High resolution measurement of levee subsidence related to energy infrastructure in the Sacramento-San Joaquin Delta
We assess flood overtopping potential (when flood water elevation exceeds levee elevation) to the levees surrounding the islands in the interior of California's Sacramento-San Joaquin Delta. Because critical natural gas infrastructure is susceptible to overtopping-related disruption, we focus our analysis on regions that are crossed by the network of the state's natural gas pipelines. We...
Authors
Benjamin Brooks, Jennifer Telling, Todd Leroy Ericksen, Craig Glennie, Noah Knowles, Daniel Cayan, Darren Hauser, Adam LeWinter
Buried shallow fault slip from the South Napa earthquake revealed by near-field geodesy Buried shallow fault slip from the South Napa earthquake revealed by near-field geodesy
Earthquake-related fault slip in the upper hundreds of meters of Earth’s surface has remained largely unstudied because of challenges measuring deformation in the near field of a fault rupture. We analyze centimeter-scale accuracy mobile laser scanning (MLS) data of deformed vine rows within ±300 m of the principal surface expression of the M (magnitude) 6.0 2014 South Napa earthquake...
Authors
Benjamin Brooks, Sarah Minson, Craig Glennie, Johanna Nevitt, Timothy Dawson, Ron Rubin, Todd Ericksen, David Lockner, Kenneth Hudnut, Victoria E. Langenheim, Andrew Lutz, Jessica Murray, David Schwartz, Dana Zaccone
Hawaiian fissure fountains: Quantifying vent and shallow conduit geometry, episode 1 of the 1969-1974 Mauna Ulu eruption Hawaiian fissure fountains: Quantifying vent and shallow conduit geometry, episode 1 of the 1969-1974 Mauna Ulu eruption
Geometries of shallow magmatic pathways feeding volcanic eruptions are poorly constrained, yet many key interpretations about eruption dynamics depend on knowledge of these geometries. Direct quantification is difficult because vents typically become blocked with lava at the end of eruptions. Indirect geophysical techniques have shed light on some volcanic conduit geometries, but the...
Authors
Carolyn Parcheta, Sarah Fagents, Donald A. Swanson, Bruce Houghton, Todd Ericksen
Key recovery factors for the August 24, 2014, South Napa Earthquake Key recovery factors for the August 24, 2014, South Napa Earthquake
Through discussions between the Federal Emergency Management Agency (FEMA) and the U.S. Geological Survey (USGS) following the South Napa earthquake, it was determined that several key decision points would be faced by FEMA for which additional information should be sought and provided by USGS and its partners. This report addresses the four tasks that were agreed to. These tasks are (1)
Authors
Kenneth Hudnut, Thomas Brocher, Carol Prentice, John Boatwright, Benjamin Brooks, Brad Aagaard, J. Blair, Jon Fletcher, Jemile Erdem, Charles Wicks, Jessica Murray, Fred F. Pollitz, John Langbein, Jerry Svarc, David Schwartz, Daniel Ponti, Suzanne Hecker, Stephen DeLong, Carla Rosa, Brenda Jones, Rynn Lamb, Anne Rosinski, Timothy McCrink, Timothy Dawson, Gordon G. Seitz, Craig Glennie, Darren Hauser, Todd Ericksen, Dan Mardock, Don Hoirup, Jonathan Bray, Ron Rubin