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Heidi Houston

Courses Taught

Course #
% Responsible

UW Class Seminars and Lectures

Course #
Type of Instruction / Title of Talk
2007-2010ESS594-Several talks in ESS 594 for new graduate students
2007-2013ESS562-Several talks in the Seismology Seminar
12 Feb 2007School of Oceanography--Invited seminar at Marine Geology and Geophysics, School of Oceanography, UW

Awards and Honors

Award Name
Date Bestowed
Awarding Body
Brief Description
Outstanding MentorSpring 2010Mary Gates Research Symposium-

Professional Talks and Presentations

2007-2015AGU, SSA, GSA, and smaller conferences and workshopsNumerous talks and poster presentations, some mentioned below---
11-16-2012CalTechInvited Seminar on Episodic Tremor and Slow SlipITalk"The spatio-temporal relationship of slow slip and tremor in Cascadia ETS"
3-21-2012USGSPacific Northwest Workshop for the Update of the National Seismic Hazard MapsITalk-
12-15-2011USGSWorkshop on landward limit of locked zone of Cascadia subduction zoneITalk-
10-14-2010EarthScope InstituteSpectrum of Fault BehaviorsITalk"The path ahead: Reconciling the diverse spectro-spatio-temporal patterns of ETS and earthquakes"
6-05-2008IRISAnnual WorkshopCPoster"Tremor scaling and implications for the slow slip process"
2-27-2008USGSWorkshop on Slow slip and tremor: earthquake hazard implications and opportunities to educateITalk"Scaling and the relation between tremor and slow slip"
12-07-2007AGU2007 Fall MeetingCTalk"Scaling of the tremor source"
4-1-2013UC BerkeleyInvited SeminarITalk"Slow slip, tremor, and tidal stress: Fault weakening during ETS"
1-16-2015CaltechInvited SeminarITalk"Response of tremor and slow slip to tidal stress: Constraints on fault friction and weakening"
2-24-2015Universidad Nacional Autonoma de MexicoInvited SeminarITalk"Low friction and fault weakening revealed by rising sensitivity of tremor to tidal stress"
9-5-2015Summer School for Earthquake Science, organized by Earthquake Research Institute, University of TokyoInvited LectureITalk"Evolution of tidal sensitivity: Competition between tectonic loading and fault healing"
9-18-2015University of Tokyo, Earthquake Research Institute ColloquiumInvited LectureITalk"Tidal influence on tremor during and between major slow slip events in Cascadia: A window into the physical environment deep in subduction zones"
9-25-2015Workshop on Slow Earthquakes, Nagoya University, JapanKeynote SpeakerITalk"Evolution of tidal sensitivity: Competition between tectonic loading and fault healing"
10-7-2015University of Washington, Seismology SeminarLectureITalk"Tidal influence on tremor during and between major slow slip events in Cascadia: A window into the physical environment deep in subduction zones"
6- 2016IRIS Annual WorkshopInvited TalkITalk"Evolving sensitivity of tremor to tidal stress during and between large ETSs in Cascadia: Implications for deep fault properties"
8-2016Gordon Research Conference on Rock DeformationInvited LectureITalkTidal Influence on Tremor During and Between Major Slow Slip Events: A Window Into the Physical Environment Deep in Subduction Zones
12-2016AGU Fall Meeting - Mineral and Rock Physics SectionInvited TalkITalkEvolving sensitivity of tremor to tidal stress during and between large ETSs in Cascadia: Implications for deep fault properties

Public and Community Service

Type of Service
March 30, 2012Pacific Northwest Association of College Physics Conference on Physics of the Grand ScaleInvited Lecture"Slow slip: A new kind of earthquake"

Recent Publications and Manuscripts in the Press

*Persh, S.E., and H. Houston, Deep earthquake rupture histories determined
by global stacking of broadband P waveforms, J. Geophysical Research, 109,
April, doi:10.1029/2004JB002762, 2004.

*Persh, S.E., and H. Houston, Strongly depth-dependent aftershock production
in deep earthquakes, Bull. Seism. Soc. Am., 94, Oct., 1808-1816, 2004.

*Ishii, M., P. Shearer, H. Houston, and J. Vidale, Rupture extent, duration,
and speed of the 2004 Sumatra-Andeman earthquake imaged by the Hi-Net array,
Nature, 435, 933-936, doi:10,1038, 2005.

*Kagan, Y. and H. Houston, Relation between mainshock rupture process
and Omori's Law for aftershock moment release rate, Geophysical Journal
International, 163, 1039-1048, doi:10.1111/j.1365-246X.2005.02772.x, 2005.

*Peng, Z., J.E. Vidale, and H. Houston, Anomalous early aftershock decay rate
of the 2004 Mw 6.0 Parkfield, California, earthquake, Geophys. Res. Lett.,
33, L17307, doi:10.1029/2006GL026744, 2006.

**Houston, H. and J. Vidale, Relationships in a slow slide, Nature, 447,
49-50, 2007.

*Ishii, M., P.M. Shearer, H. Houston, and J.E. Vidale, Teleseismic P-wave
imaging of the 26 December 2004 Sumatra-Andaman and 28 March 2005 Sumatra
earthquake ruptures using the Hi-Net array, J. Geophys. Res., 112, B11307,
doi:10.1029/2006JB004700, 2007.

***Houston, H., Deep Earthquakes, v. 4 (Earthquake Seismology), p. 321-350,
in Treatise on Geophysics, ed. G. Schubert, Oxford, 2007.

**Book review for Physics Today of book Deep Earthquakes, by Cliff Frohlich, 2007.

*Martin, M. E., R. Weiss, J. Bourgeois, T. K. Pinegina, H. Houston, and V. V. Titov, Combining constraints from tsunami modeling and sedimentology to untangle the 1969 Ozernoi and 1971 Kamchatskii tsunamis, Geophys. Res. Lett., 35, L01610, doi:10.1029/2007GL032349, 6 pages, 2008.

*Ghosh, A, Vidale, JE, Peng, ZG, Creager, KC, and Houston, H., Complex nonvolcanic tremor near Parkfield, California, triggered by the great 2004 Sumatra earthquake, JGR, 114, B00A15, 2009.

*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, 2009.

***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, 2010.

*Ghosh, A., J. E. Vidale, J. R. Sweet, K. C. Creager, A. G. Wech, H. Houston, and E. E. Brodsky, Rapid, continuous streaking of tremor in Cascadia, Geochemistry Geophysics Geosystems, 11, Q12010, doi:10.1029/2010GC003305, 2010.

*Wech, A. G., K. C. Creager, H. Houston, and J. Vidale, An earthquake-like magnitude-frequency distribution of slow slip in northern Cascadia, Geophysical Research Letters, 37, L22310, doi:10.1029/2010GL044881, 2010.

*Zhang, J., P. Gerstoft, P. M. Shearer, H. Yao, J. Vidale, H. Houston, and A. Ghosh, Cascadia tremor spectra: Low corner frequencies and earthquake-like high-frequency falloff, Geochemistry Geophysics Geosystems, 12, Q10007, doi:10.1029/2011GC003759, 2011.

*Houston, H., B. G. Delbridge, A. G. Wech, and K. C. Creager, Rapid tremor reversals in Cascadia generated by a weakened plate interface, Nature Geoscience, 4, 404-409, doi:10.1038/NGEO1157, 2011.

***Vidale, J. E., and H. Houston, Slow slip: A new kind of earthquake, Physics Today, 65, 38-43, 2012.
(also tranlated to Japanese, 2013)

*Thomas, T.W., J.E. Vidale, H. Houston, K.C. Creager, J.R. Sweet and A. Ghosh, Evidence for tidal triggering of high-amplitude rapid tremor reversals and tremor streaks in northern Cascadia, Geophysical Research Letters, DOI: 10.1002/grl.50832, 2013.

*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 forearm mantle wedge, Geophysical Research Letters, v. 41, doi: 10.1002/2013GL059118, 2014.

*Sweet, J.R., K.C. Creager, and H. Houston, A family of repeating low-frequency earthquakes at the downdip edge of tremor and slip, G-Cubed, v. 15, doi: 10.1002/2014GC005449, 2014.

*Han, J., J.E. Vidale, H. Houston, K, Chao, and K. Obara, Triggering of tremor and inferred slow slip by small earthquakes at the Nankai subduction zone in Southwest Japan, Geophysical Research Letters, v. 41, doi: 10.1002/2014GL061898, 2014.

*Houston, H., Low friction and fault weakening revealed by rising sensitivity of tremor to tidal stress, Nature Geoscience, v. 8, no. 5, 409-415, doi: 10.1038/ngeo2419, 2015. (accompanied by News & Views)

***Houston, H., Deep Earthquakes, in Treatise on Geophysics 2nd Ed., editor-in-chief G. Schubert, Oxford, Elsevier, Vol.4 Earthquake Seismology, p 329-354, 2015.

*Yabe, S., Y. Tanaka, H. Houston, and S. Ide, Comparison of tidal sensitivity of tectonic tremors in Nankai and Cascadia subduction zones, JGR, v. 120, no. 11, 7587-7605, 2015.

Gomberg, J, +20 others, Planning for a Subduction Zone Observatory, EOS, v. 97, doi: 10.1029/2016EO052635, 2016.

Husker, A., H. Houston, and M. Campillo, Understanding Slow Slip and Tremor on Plate Boundaries, EOS, 97, doi:10.1029/2016EO054291, 2016.

Han, J., J. Vidale, H. Houston, D. Schmidt, and K. Creager, Deep long-period earthquakes (DLPs) beneath Mount St. Helens modulated by tidal stress, Geophysical Research Letters, submitted, 2018.

*peer reviewed
***invited and peer reviewed

Current Research Interests

Observational Source Seismology, source scaling, Episodic Tremor and Slip, propagation patterns, integration of diverse data types, spatio-temporal relationship of slip and tremor, geodetic constraints on slip during ETS, tidal stressing

Current C.V. URL

In the News

Quoted in "Are Tsunamis Predictable?" on Discovery News, June 2, 2010:

My work was main topic of front-page Seattle Times article, May 2015:

I discussed my research into slow earthquakes, tremor, and tides in Smithsonian Magazine, August 2016. The article also summarizes related discoveries and experiments in the mysterious field of slow slip -

Quoted in Physics World article, July 2017: