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Kenneth Creager- Website

Courses Taught

Course #
% Responsible
autumn-13sabbatical leave
winter-14sabbatical leave

Awards and Honors

Award Name
Date Bestowed
Awarding Body
Brief Description
AGU Fellow2011AGU

Professional Talks and Presentations

9-12-2014Earth Research Institute/Univ. of TokyoDept. ColloquiumInvitedTalk“Insights into Cascadia Slow-Slip Rupture Using Repeating Low-Frequency Earthquakes”
9-9-2014Joint Workshop on Slow Earthquakes in Kyoto, JapanInvitedKeynote Talk“Review of Cascadia Tremor and Slow Slip”
11-14-2013StanfordDept. ColloquiumInvitedTalkInsights into Cascadia Slow-Slip Rupture Using Repeating Low-Frequency Earthquakes"
05-05-2012NSF/GeoPrismsCascadia WorkshopInvitedTalkSeismic and aseismic processes from the modern record”.
02-08-2012Rice UniversityDept. ColloquiumInvitedTalk"Tremor and Slow Slip in Cascadia"
04-24-2009NorthwesternDept. ColloquiumInvitedTalkHow Subduction Faults Accommodate Slip: Episodic Tremor and Slip versus Megathrust Earthquakes"
05-25-2009AGUSpring AGUInvitedTalkNorthern Cascadia Episodic Tremor and Slip: Cycles within Cycles"
06-06-2008IRISAnnual WorkshopInvitedTalkEpisodic Tremor and Slip in Cascadia"
12-10-2008AGUFall AGUContribTalkStrong Tidal Modulation of Cascadia Non-Volcanic Tremor"
Author of many abstracts for Fall AGU meetings every year and EarthScope or IRIS workshops every year.
9-28-15Earth Research Institute/Univ. of TokyoDept. ColloquiumInvitedTalkInsights into Cascadia Slow-Slip Rupture Using Repeating Low-Frequency Earthquakes
9-24-15Joint Workshop on Slow Earthquakes in Nagoya, JapanInvitedTalkComparison of Tectonic Tremor in Cascadia and Nankai

Public and Community Service

Type of Service
May 2, 2015Mount St Helens 35th anniversary open house at Cascade Volcano Observatory; expect 1000-2000 visitorspresent all day poster
May 18, 2016Mount St Helens National Volcanic MonumentMedia/general public talks and films at Johnston Ridge Observatory; I'll give two 20-minute talks on our imaging Magma Under Mount St Helens (iMUSH) project

Recent Publications and Manuscripts in the Press


Manuscripts in Press:
Kiser, E., I Palomeras, A. Levander, C. Zelt, S. Harder, B. Schmandt, S. Hansen, K. Creager, C. Ulberg, Magma reservoirs from the upper crust to the Moho inferred from high-resolution Vp and Vs models beneath Mount St. Helens, Washington State, USA Geology, in press, 2016.

Gomberg, J., P. Bodin, J. Bourgeois, S. Cashman, D. Cowan, K. Creager, B. Crowell, A. Duvall, A. Frankel, F. Gonzalez, H. Houston, P. Johnson, H. Kelsey, U. Miller, E. Roland, D. Schmidt, L. Staisch, J. Vidale, W. Wilcock, E. Wirth, Planning for a Subduction Zone Observatory, EOS Opinion, in press, 2016.


Sweet, J. R., K. C. Creager and H. Houston, A family of repeating low-frequency earthquakes at the downdip edge of tremor and slip, 2014, Geochem., Geophys., Geosyst., 15, doi 10.1002/2014GC005449, 3713-3721.

Vidale, J.E., D. A. Schmidt, S.D. Malone, A.J. Hotovec-Ellis, S.C. Moran, K.C. Creager, and H. Houston, Deep long-period earthquakes west of the volcanic arc in Oregon: evidence of serpentine dehydration in the forearc mantle wedge, 2014, Geophys. Res. Lett., doi:10.1029/2013GL059118.

Hotovec-Ellis, A., J. Gomberg, J. E Vidale, K. C. Creager, A continuous record of inter-eruption velocity change at Mount St. Helens from coda-wave interferometry, 2014, J. Geophys. Res., in press.

Schmalzle, G., R. McCaffrey, K. C. Creager, Central Cascadia Subduction Zone Creep, 2014, Geochem., Geophys., Geosyst., in press.


Creager, K. C. Earth’s Inner Core: Variable Rotation, 2013, Nature GeoSci., 6, doi:10.1038/ngeo1831, 424-426.

Thomas, T. W., J. E. Vidale , H. Houston, A. Ghosh K. C. Creager and J. R. Sweet, Evidence for tidal triggering of high-amplitude rapid tremor reversals and tremor streaks in northern Cascadia, 2013, Geophys. Res. Lett.,40, 4254-4259, doi: 10.1002/grl.50832.


Gomberg, J., K. C. Creager, J. R. Sweet, J. E. Vidale, A. Ghosh, A. Hotovec, 2012, Earthquake spectra and near-source attenuation in the Cascadia subduction zone, J. Geophys. Res., 117, doi:10.1029/2011JB009055, 1-12.

Ghosh, A., J. E. Vidale and K. C. Creager, Tremor asperities in the transition zone control evolution of slow earthquakes, 2012, J. Geophys. Res., 117, doi:10.1029/2012JB009249, 1-9.


Wech, A. G. and K. C. Creager, 2011, A continuum of stress, strength and slip in the Cascadia transition zone, Nature GeoSci..,4, 1-5, doi:10.1038/ngeo121.

Calkins, J. A., G. A. Abers, G. Ekström, K. C. Creager and S. Rondenay, 2011, Shallow structure of the Cascadia subduction zone beneath western Washington from spectral ambient noise correlation, J. Geophys. Res.,, J. Geophys. Res., 116, doi: 10.1029/2010JB0076,

Houston, H., B. G. Delbridge, A. G. Wech, K. C. Creager, Rapid Tremor Reversals in Cascadia generated by a weakened plate interface, Nature Geoscience, v. 4, no. 6, 404-409, doi:10.1038/ngeo1157, 2011.

Vidale, J. E., A. J. Hotovec, A. Ghosh, K. C. Creager, and J. Gomberg, 2011, Tiny intraplate earthquakes triggered by nearby episodic tremor and slip in Cascadia, Geochem. Geophys. Geosyst., 12, Q06005, doi:10.1029/2011GC003559.

Gershenzon, N. I., G. Bambakidis, E. Hauser, A. Ghosh, and K. C. Creager, 2011, Episodic tremors and slip in Cascadia in the framework of the Frenkel‐Kontorova model, Geophys. Res. Lett., doi:10.1029/2010GL045225, 1-5.


Wech, A. G., K. C. Creager, H. Houston, and J. E. Vidale, An earthquake-like magnitude-frequency distribution of slow slip in northern Cascadia, 2010, Geophys. Res. Lett., doi:10.1029/2010GL044881, 1-5.

Ghosh, A, J. E. Vidale, J. R. Sweet, K. C. Creager, A. G. Wech, H. Houston, and E. E. Brodsky, 2010, Rapid, continuous streaking of tremor in Cascadia, Geochem., Geophys., Geosyst., 11, Q12010, doi:10.1029/2010GC00330.

Ghosh, A., J. E. Vidale, J. R. Sweet, K. C. Creager, A. G. Wech, and H. Houston, 2010, Tremor bands sweep Cascadia, Geophys. Res. Lett., 37, L08301, doi:10.1029/2009GL042301, 1-5.

Gomberg, J. and the Cascadia 2007 and Beyond Working Group, 2010, Slow-slip phenomena in Cascadia from 2007 and beyond: A review, GSA Bulletin, 122 p. 963–978; doi: 10.1130/B30287.1.

McCausland, W., K. C. Creager, M. La Rocca and S. D. Malone, 2010, Short-term and long-term tremor migration patterns of the Cascadia 2004 tremor and slow slip episode using small aperture seismic arrays, J. Geophys. Res., 115, doi:10.1029/2008JB006063, 1-22.


Wech, A. G., K. C. Creager and T. I. Melbourne, 2009, Seismic and geodetic constraints on Cascadia slow slip, J. Geophys. Res., 114, B10316, doi:10.1029/2008JB006090, 1-9.

La Rocca, M., K. C. Creager, D. Galluzzo, S. D. Malone, J. E. Vidale, J. R. Sweet, and A. G. Wech, 2009, Cascadia tremor located near plate interface constrained by S minus P wave times, Science, 323, 620-623, doi:10.1126/science.116711.

Rubinstein, J. L., J. Gomberg, J. E. Vidale, A. G. Wech, H. Kao, K. C. Creager and G. Rogers, 2009, Seismic wave triggering of non-volcanic tremor, episodic tremor and slip, and earthquakes on Vancouver Island, J. Geophys. Res., 114, doi:10.1029/2008JB005875, 1-22.

Peng, Z., J. E. Vidale, A. G. Wech, R. M. Nadeau and K. C. Creager, 2009, Remote triggering of tremor along the San Andreas fault in central California, J. Geophys. Res., doi:10.1029/2008JB006049.

Ghosh, A., J. E. Vidale, J. R. Sweet, K. C. Creager, and A. G. Wech, 2009, Tremor patches in Cascadia revealed by seismic array analysis, Geophys. Res. Lett., 36, L17316, doi:10.1029/2009GL039080, 1-5.

Abers, G. A., L. S. MacKenzie, S. Rondenay, Z. Zhang, A. G. Wech, and K. C. Creager, 2009, Imaging the source region of Cascadia tremor and intermediate-depth earthquakes, Geology, 37, doi: 10.1130/G30143A.1, 1119-1122.

Ghosh, A., J. E. Vidale, Z. Peng, K. C. Creager and H. Houston, 2009, Complex non-volcanic tremor near Parkfield, triggered by the great 2004 Sumatra earthquake, J. Geophys. Res., 104, doi:10.1029/2008JB006062, 1-12.


Creager, K. C., Solid evidence in the inner core, Nature, 454, 833-835.

Wech, A. G., and K. C. Creager, Automatic detection and location of Cascadia tremor, Geophys. Res. Lett., 34, doi:10.1029/2008GL035458, 1-5.

Rubinstein, J. L., M. La Rocca, J. E. Vidale, K. C. Creager and A. G. Wech, Tidal modulation of nonvolcanic tremor, Science, 319, 186-189.

Gomberg, J., J. L. Rubinstein, Z. Peng, K. C. Creager, J. E. Vidale, P. Bodin, 2008, Widespread triggering of nonvolcanic tremor in California, Science, 319, 173.

Peng, Z., J. E. Vidale, K. C. Creager, J. L Rubinstein, J. Gomberg, and P. Bodin, Strong tremor near Parkfield, CA, excited by the 2002 Denali Fault earthquake, Geophys. Res. Lett., 35, L23305, doi:10.1029/2008GL036080.

Thelen, W. A., R. S. Crosson and K. C. Creager, 2008, Absolute and Relative Locations of Earthquakes at Mount St. Helens, Washington Using Continuous Data: Implications for Magmatic Processes, Chap 4 in A Volcano Rekindled: The Renewed Eruption of Mount St. Helens, 2004-2006. Edited by David R. Sherrod, William E. Scott, and Peter H. Stauffer, U.S. Geological Survey Professional Paper 1750, 71-95, 2008.


Rubinstein, J. L., J. E. Vidale, J. Gomberg, P. Bodin, K. C. Creager and S. D. Malone, 2007, Non-volcanic tremor driven by large transient shear stresses, Nature, 448, 579-582.

Wech, A. G., and K. C. Creager, 2007, Cascadia tremor polarization evidence for plate interface slip , Geophys. Res. Lett., 34, doi:10.1029/2007GL031167, 1-6.

Current Research Interests

Seismology, Tectonic tremor and slow slip, Volcano Seismology, Geophysical inverse theory, Earthquake hazards, Mantle and core dynamics

In the News

Komo News interview on tremor and slip in western washington: March 6, 2008

I was featured in the NOVA film "Deadliest Earthquakes" in 2011: contains information regarding our field experiment on Mount St. Helens. has links to about 3 dozen newspaper articles, TV reports,
including a number of press releases and other

Here is a news article published in Nature regarding our iMUSH experiment: