Sanaz Rezaeian

Biography

Sanaz Rezaeian is a research structural engineer, specializing in earthquake hazard analysis, statistics, and risk assessment. She received her B.S. in Civil Engineering from the University of California, Berkeley in 2004. After working in the industry on design and rehabilitation of structural systems for a year, she received her M.S. and Ph.D. from the Structural Engineering, Mechanics and Materials (SEMM) program of UC Berkeley in 2006 and 2010, respectively. For her doctoral dissertation, Rezaeian focused on identification and simulation of strong earthquake ground motions for engineering applications. In 2010, she joined the Pacific Earthquake Engineering Research center (PEER) as a postdoctoral fellow, where she conducted research on modeling of ground motion prediction equations, developed a new model to scale ground motion intensities for various damping levels of structures, and directed a working group on modeling of vertical component of ground motion. In 2011, Rezaeian received a Mendenall Fellowship award from the U.S. Geological Survey (USGS) to conduct research on ground motion models and assist the national seismic hazard modeling (NSHM) project with implementation of GMPEs in the 2014 NSHMs. Currently, she is leading the seismic desgin task of the USGS NSHM group, working on the next generation of hazard and design models. Current projects involve research and development of earthquake ground motion models for both intensity measures and time-series, as well as their implementation in the current and future USGS National Seismic Hazard Models. Furthermore, Rezaeian studies the effects of these ground motion models on structures and works directly with the engineering users of the USGS products by developing design ground motions and methodologies by which engineers can validate simulated time-series for their specific engineering applications.

 

Current USGS Projects:

1) National Seismic Hazard Modeling Project (2014 & 2018 NSHM Updates)

The NSHMP develops earthquake ground shaking forecasts for the U.S. and its territories. The “seismic hazard models” task updates the National Seismic Hazard Model (NSHM) on a regular basis to account for the best available science. The updates improve both earthquake source models and ground motion models (GMMs). I serve as a leading member of the NSHMP to update GMMs. My role is to identify shortcomings of current GMMs, research and evaluate new GMMs, develop new weighting schemes for their implementation in the NSHM, and analyze their impact on hazard. I collaborate with model developers outside of the USGS to improve GMMs. I also develop GMMs for various damping ratios for adoption into future hazard models. My research has been implemented in the 2014 USGS NSHMs, published in journals and presented at several scientific meetings. The model I developed for various damping ratios is published in Earthquake Spectra. The NSHMs serve as the basis of seismic design provisions for building codes and other structures. Other government agencies (e.g., FEMA & DOD), and insurance companies also use these products to make informed decisions that can affect about a trillion dollars of new construction and insurance each year.

2) Seismic Design Ground Motions

The NSHMP develops earthquake hazard forecasts for the U.S. and its territories. These hazard assessments serve as the basis of seismic design provisions for building codes and other structures. The “seismic design” task provides the link between NSHMP and design provisions. I currently serve as the leader of this task in USGS. I conduct research to improve the manner in which NSHMP hazard forecasts are transformed into “design” ground motions for use by the engineering community. I also conduct research related to validation of simulated ground motions for utilization by the engineering community and in the future hazard models. I work on the development of design maps and web services with other USGS colleagues, which are important USGS products and links between NSHMP and engineering users. I currently serve as a USGS liaison on the Building Seismic Safety Council (BSSC) Provisions Update Committee (PUC), the BSSC Project ’17 that is formed to improve future procedures for developing design ground motions, and the American Railway Engineering and Maintenance-of-Way Association (AREMA). Not only is my research incorporated into design provisions, my direct link to building codes and the engineering community allows me to play a critical role in seeing USGS hazard research applied in ways that directly impact public safety by improving earthquake engineering practice.

3) Simulation of Broadband Time Histories

Earthquake ground motion recordings are scarce in the central and eastern U.S. (CEUS) for large magnitude events. The largest earthquake recorded in this region is the 2011 Mineral earthquake M5.8. In this task, we use different simulation approaches to develop new methodologies for simulating broadband time histories in the CEUS since there is a dearth of actual ground motion recordings. My role is to modify and improve the stochastic simulation model that I had developed for crustal earthquakes in active tectonic regions to produce earthquake ground motion simulations for the stable continental regions of the CEUS. I also collaborate with other USGS colleagues to compare my stochastic simulations to his deterministic physics-based simulations. We were successful in developing broadband simulation models for the CEUS. We showed that they can reasonably simulate recordings from the Mineral earthquake. We simulated ground motions for magnitudes as high as 7.6. The results are published in BSSA journal. Having reliable simulation approaches in the CEUS allows better estimation of ground motion models and their uncertainties for use in seismic hazard models. The results of our research are being investigated by the NSHMP and will help to improve the ground motion estimation in the CEUS.

4) Engineering Risk Assessment (ERA) Project

The ERA project conducts research and develops products related to the risk of damage to the built environment and consequent losses resulting from natural hazards. There are three main research areas within this project: Exposure to the hazard, fragility/vulnerability of the exposure, and integration with the hazard. My research contributes to the second task. In particular, I use simulations to estimate fragility and vulnerability of buildings exposed to seismic hazard. Due to my limited time on this project, I have mainly worked as a consultant or advisor to external researchers and visiting USGS scholars. The research that ERA conducts furthers the USGS mission to “minimize loss of life and property from natural disasters.”

 

PUBLICATIONS

Journal Papers:

Deng, P., Pei, L., Hartzell, S., Luco, N., and Rezaeian, S., 2018, A response spectrum-based indicator for structural damage prediction. Engineering Structures, Elsevier, v. 166, 2018, p. 546-555. doi: 10.1016/j.engstruct.2018.03.046.

Rezaeian, S., Hartzell, S., Sun, X., and Mendoza, C., 2017, Simulation of earthquake ground motions in the eastern United States using deterministic physics‐based and site‐based stochastic approaches: Bulletin of the Seismological Society of America (BSSA), v. 107, no.1, p. 149-168. doi:10.1785/0120160031.

Rezaeian, S., Zhong, P., Hartzell, S., and Zareian, F., 2015, Validation of simulated earthquake ground motions based on evolution of intensity and frequency content: Bulletin of the Seismological Society of America (BSSA), v. 105, no. 6, p. 3036-3049. doi: 10.1785/0120140210.

Sun, X., Hartzell, S., and Rezaeian, S., 2015, Ground motion simulation for the 23 August 2011, Mineral, Virginia earthquake using physics-based and stochastic broadband methods: Bulletin of the Seismological Society of America (BSSA), v. 105, no. 5, p. 2641-2661. doi:10.1785/0120140311.

Rezaeian, S., Petersen, M.D., and Moschetti, M.P., 2015, Ground motion models used in the 2014 U.S. national seismic hazard maps: Earthquake Spectra, The Professional Journal of the Earthquake Engineering Research Institute (EERI), v. 31, no. S1, p. S59-S84. doi:10.1193/111714EQS194M.

Petersen, M.D., ., Powers, P., Mueller, C.S., Haller, K.M., Frankel, A.D., Zeng, Y., Rezaeian, S., Harmsen, S.C., Boyd, O.S., Field, E.H., Chen, R., Rukstales, K.S., Luco, N., Wheeler, R.L., Williams, R.A., and Olsen, A.H., 2015, The 2014 United States national seismic hazard model: Earthquake Spectra, The Professional Journal of the Earthquake Engineering Research Institute (EERI), v. 31, no. S1, p. S1-S30. doi:10.1193/120814EQS210M

Haller, K., , Mueller, C.S., Rezaeian, S., Petersen, M.D., and Zeng, Y., 2015, Seismic hazards in the intermountain west: Earthquake Spectra, The Professional Journal of the Earthquake Engineering Research Institute (EERI), v. 31, no. S1, p. S149-S176. doi:10.1193/103114EQS173M.

Mueller, C., Boyd, O., Petersen, M., Rezaeian, S., 2015, Seismic hazard in the eastern United States: Earthquake Spectra, The Professional Journal of the Earthquake Engineering Research Institute (EERI), v. 31, no. S1, p. S85-S107. doi:10.1193/110414EQS182M

Boyd, O., Haller, K., Luco, N., , Mueller, C., Petersen, M., Rezaeian, S., and Rubinstein, J., 2015, Seismic hazard in the nation’s breadbasket: Earthquake Spectra, The Professional Journal of the Earthquake Engineering Research Institute (EERI), v. 31, no. S1, p. S109-S130. doi:10.1193/103114EQS174M.

Rezaeian, S., Petersen, M.D., Moschetti, M.P., Powers, P., Harmsen, S., and Frankel, A., 2014, Implementation of NGA-West2 ground motion models in the U.S. national seismic hazard maps: Earthquake Spectra, The Professional Journal of the Earthquake Engineering Research Institute (EERI), v. 30, no. 3, p. 1319-1333. doi:10.1193/062913EQS177M

Bozorgnia, Y., Abrahamson, N., Al Atik, L., Ancheta, T., Atkinson, G., Baker, J., Baltay, A., Boore, D., Campbell., W., Chiou, B., Darragh, R., Day, S., Donahue, J., Graves, R., Gregor, N., Hanks, T., Idriss, I.M., Kamai, R., Kishida, T., Kottke, A., Mahin, S., Rezaeian, S., Rowshandel, B., Seyhan, E., Shahi, S., Shantz, T., Silva, W., Spudich, P., Stewart, J., Watson-Lamprey, J., Wooddell, K., and Youngs, R., 2014, NGA-West2 research project: Earthquake Spectra, The Professional Journal of the Earthquake Engineering Research Institute (EERI), 30, no. 3, p. 973–987. doi:10.1193/072113EQS209M.

Rezaeian, S., Bozorgnia, Y., Idriss, I.M., Campbell, K., Abrahamson, N., and Silva, W., 2014, Damping scaling factors for vertical elastic response spectra for shallow crustal earthquakes in active tectonic regions: Earthquake Spectra, The Professional Journal of the Earthquake Engineering Research Institute (EERI), v. 30, no. 3, p. 1335–1358. doi:10.1193/100512EQS299M

Rezaeian, S., Bozorgnia, Y., Idriss, I.M., Campbell, K., Abrahamson, N., and Silva, W., 2014, Damping scaling factors for elastic response spectra for shallow crustal earthquakes in active tectonic regions: “average” horizontal component: Earthquake Spectra, The Professional Journal of the Earthquake Engineering Research Institute (EERI), v. 30, no. 2, p. 939-963. doi:10.1193/100512EQS298M

Rezaeian, S., and Der Kiureghian, A., 2012, Simulation of orthogonal horizontal ground motion components for specified earthquake and site characteristics: Earthquake Engineering and Structural Dynamics, The Journal of the International Association for Earthquake Engineering and of the International Association for Structural Control, v. 41, no. 2, p. 335-353. doi:10.1002/eqe.1132.

Rezaeian, S., and Der Kiureghian, A., 2010, Simulation of synthetic ground motions for specified earthquake and site characteristics: Earthquake Engineering and Structural Dynamics, The Journal of the International Association for Earthquake Engineering and of the International Association for Structural Control, v. 39, no. 10, p. 1155-1180. doi: 10.1002/eqe.997.

Rezaeian, S., and Der Kiureghian, A., 2008, A stochastic ground motion model with separable temporal and spectral nonstationarities: Earthquake Engineering and Structural Dynamics, The Journal of the International Association for Earthquake Engineering and of the International Association for Structural Control, v. 37, no. 13, p. 1565-1584. doi: 10.1002/eqe.831.

 

Journal Articles in press or under review/development:

Sun, X., Clayton, B., Hartzell, S., and Rezaeian, S. (in press). “Estimation of Ground Motion Variability in the Central and Eastern United States: Part I. Using Deterministic Physics-Based Synthetics,” prepared for submission to Bulletin of the Seismological Society of America (BSSA).

Sun, X., Rezaeian, S., Clayton, B., and Hartzell, S. (currently under internal USGS review). “Estimation of Ground Motion Variability in the Central and Eastern United States: Part II. Using a Broadband Stochastic Approach,” submitted to Bulletin of the Seismological Society of America (BSSA).

 

Technical Reports:

Shumway, A., Petersen, M.D., Powers, P.M., and Rezaeian, S. (2018). “Additional period and site class maps for the 2014 national seismic hazard model for the conterminous United States,” U.S. Geological Survey Open-File Report, OFR 2018-1111. [IP-098308; center director approval received 7/11/2018; planned dissemination date 7/31/2018]. https://doi.org/10.3133/ofr20181111DataRelease in Science base: Shumway, A.M., 2018, Data release for additional period and site class maps for the 2014 National Seismic Hazard Model for the conterminous United States: U.S. Geological Survey data release, https://doi.org/10.5066/P9I6BPX5.

Petersen, M.D., ., Powers, P., Mueller, C.S., Haller, K.M., Frankel, A.D., Zeng, Y., Rezaeian, S., Harmsen, S.C., Boyd, O.S., Field, E.H., Chen, R., Luco, N., Wheeler, R.L., Williams, R.A., Olsen, A.H., and Rukstales, K.S., 2015, Seismic-hazard maps for the conterminous United States, 2014, U.S. Geological Survey Scientific Investigations Map 3325, 6 sheets, scale 1:7,000,000. doi:10.3133/sim3325.

Petersen, M.D., ., Powers, P., Mueller, C.S., Haller, K.M., Frankel, A.D., Zeng, Y., Rezaeian, S., Harmsen, S.C., Boyd, O.S., Field, N., Chen, R., Rukstales, K., Luco, N., Wheeler, R.L., Williams, R.A., and Olsen, A.H., 2014, Documentation for the 2014 update of the United States national seismic hazard maps: U.S. Geological Survey Open-File Report 2014–1091, 243 p. doi:10.333/ofr20141091.

Rezaeian, S., and Sun, X., 2014, Stochastic ground motion simulation: a chapter in the Encyclopedia of Earthquake Engineering, Springer-Verlag Berlin Heidelberg. doi:10.1007/978-3-642-36197-5_239-1.

Rezaeian, S., Bozorgnia, Y., Idriss, I.M., Campbell, K., Abrahamson, N., and Silva, W., 2012, Spectral damping scaling factors for shallow crustal earthquakes in active tectonic regions: Pacific Earthquake Engineering Research (PEER) Report 2012/01, University of California, Berkeley, CA.

Bozorgnia, Y., S. Rezaeian, and Anderson, W. (Technical Editors), 2011, Seismic risk management in urban areas: Proceedings of A U.S.-Iran-Turkey Seismic Workshop, Pacific Earthquake Engineering Research (PEER) Report 2011/07, University of California, Berkeley, CA.

Rezaeian, S., and Der Kiureghian, A., 2011, Stochastic simulation of earthquake ground motion components for performance-based structural analysis: Proceedings of A U.S.-Iran-Turkey Seismic Workshop on Seismic Risk Management in Urban Areas, Istanbul, Turkey, December 14-16, 2010, Pacific Earthquake Engineering Research (PEER) Report 2011/07, p. 31-39.

Rezaeian, S., , 2010, Stochastic modeling and simulation of ground motions for performance-based earthquake engineering: Ph.D. Dissertation, University of California, Berkeley, CA, United States. Publication No. AAT 3413469.

Rezaeian, S., and Der Kiureghian, A., 2010, Stochastic modeling and simulation of ground motions for performance-based earthquake engineering: Pacific Earthquake Engineering Research Center (PEER) Report 2010/02, University of California, Berkeley, CA. 

Bozorgnia, Y., S. Rezaeian, and Anderson, W. (Technical Editors), 2009, Improving earthquake mitigation through innovations and applications in seismic science, engineering, communication, and response: Proceedings of A U.S.-Iran Seismic Workshop, Pacific Earthquake Engineering Research (PEER) Report 2009/02, University of California, Berkeley, CA.

http://peer.berkeley.edu/publications/peer_reports/reports_2009/web_PEER...

 

Technical Reports in press or under review/development:

ATC Report on development of “Multi-Period Response Spectra (MPRS)" for future building codes. (to be published in 2018)

 

Conference Proceedings & Presentations:

Rezaeian, S., Bozorgnia, Y., and Kishida, T., 2018, Spectral damping scaling factors for subduction interface and intraslab earthquakes: Proceedings of the 11th U.S. National Conference on Earthquake Engineering (11NCEE), Los Angeles, CA, June 25-29, 2018, paper 751, 11 p.

Moschetti, M., Shumway, A., Frankel, A., Crouse, C.B., Goulet, C., Puangnak, H., Milner, K., Petersen, M., Luco, N., Powers, P., Graves, R., Rezaeian, S., Callaghan, S., Chang, S., and Jordan, T., 2018, The science, engineering applications, and policy implications of simulation-based PSHA: Proceedings of the 11th U.S. National Conference on Earthquake Engineering (11NCEE), Los Angeles, CA, June 25-29, 2018, paper 939, 9 p.

Petersen, M.D., Shumway, A., Powers, P., Mueller, C., Rezaeian, S., Moschetti, M., McNamara, D., Thompson, E., Meyer, E., Boyd, O., Luco, N., Hoover, S., and Rukstales, K., 2018, Preliminary 2018 national seismic hazard maps for the conterminous United States: Proceedings of the 11th U.S. National Conference on Earthquake Engineering (11NCEE), Los Angeles, CA, June 25-29, 2018, paper 953, 11 p.

Liu, T., Luco, N., Liel, A., and Rezaeian, S., 2017, Stochastic ground motion simulations for assessment of regional losses from induced earthquakes: Proceedings of the 12th International Conference on Structural Safety and Reliability (ICOSSAR12), Vienna, Austria, August 6-10, paper 7924.

Rezaeian, S., Lenon, C., Pei, S., and Deng, P., 2017, Validation of near-fault ground motion simulations with directivity pulses for use in engineering applications: Proceedings of the 16th World Conference on Earthquake Engineering (16WCEE), Santiago, Chile, January 9-13, paper 1020.

Zhong, P., Rezaeian, S., Hartzell, S., and Zareian, F., 2017, Validation of simulated earthquake ground motions based on evolution of intensity and frequency content: Proceedings of the 16th World Conference on Earthquake Engineering (16WCEE), Santiago, Chile, January 9-13, paper 3127.

Rezaeian, S., Hartzell, S., Sun, X., and Mendoza, C., 2015, Simulation of earthquake ground motions in the eastern U.S. using deterministic physics-based and stochastic approaches: Proceedings of the 12th International Conference on Applications of Statistics and Probability in Civil Engineering (ICASP12), Vancouver, Canada, July 12-15, 2015, paper 436, 8 p.

McGowan, S.M., Rezaeian, S., and Luco, N., 2014, USGS update of earthquake loading data provided in 2013 edition of Unified Facilities Criteria 3-301-01: structural engineering: Proceedings of the 10th National Conference on Earthquake Engineering (10NCEE), Anchorage, AK, July 21-25, 2014, 11 p.

Petersen, M.D., ., Powers, P., Mueller, C.S., Haller, K.M., Frankel, A.D., Zeng, Y., Rezaeian, S., Harmsen, S.C., Boyd, O.S., Field, N., Chen, R., Rukstales, K., Luco, N., Wheeler, R.L., Williams, R.A., and Olsen, A.H., 2014, Updates to the 2014 national seismic hazard maps: a summary of changes to seismic source and ground motion models: Proceedings of the 10th National Conference on Earthquake Engineering (10NCEE), Anchorage, AK, July 21-25, 2014, paper 1698, 11 p

Luco, N., and Rezaeian, S., 2013, Recent advances and ongoing efforts in developing earthquake ground motion maps and time series for building codes and risk quantification: Proceedings of the 11th International Conference on Structural Safety and Reliability (ICOSSAR11), Columbia University, New York City, NY, June 16-20, 2013, paper 100, p. 765-772.

Dabaghi, M., Der Kiureghian, A., Rezaeian, S., and Luco, N., 2013, Seismic hazard analysis using simulated ground motions: Proceedings of the 11th International Conference on Structural Safety and Reliability (ICOSSAR11), Columbia University, New York City, NY, June 16-20, 2013, paper 102, p. 781-788.

Petersen, M.D., Mueller, C.S., Haller, K.M., Harmsen, S.C., Field, E.H., Rukstales, K.S., Zeng, Y., Perkins, D.M., Powers, P., Rezaeian, S., Luco, N., Olsen, A., and Williams, R., 2012, 2014 Update of the United States national seismic hazard maps: Proceedings of the 15th World Conference on Earthquake Engineering (15WCEE), Lisbon, Portugal, September 24-28, 2012, paper 2547, 8 p.

Rezaeian, S., and Luco, N., 2012, Example applications of a stochastic ground motion simulation methodology in structural engineering: Proceedings of the 15th World Conference on Earthquake Engineering (15WCEE), Lisbon, Portugal, September 24-28, 2012, paper 2544, 8 p.

Rezaeian, S., Bozorgnia, Y., Idriss, I.M., Campbell, K., Abrahamson, N., and Silva, W., 2012, Damping scaling of response spectra for shallow crustal earthquakes in active tectonic regions: Proceedings of the 15th World Conference on Earthquake Engineering (15WCEE), Lisbon, Portugal, September 24-28, 2012, paper 0421, 8 p.

Dabaghi, M., Rezaeian, S., and Der Kiureghian, A., 2011, Stochastic simulation of near-fault ground motions for specified earthquake and site characteristics: Proceedings of the 11th International Conference on Applications of Statistics and Probability in Civil Engineering (ICASP11), Zurich, Switzerland, August 1-4, 2011, p. 759-760.

Rezaeian, S., and Der Kiureghian, A., 2010, Synthetic earthquake ground motions for specified seismic design scenario: Proceedings of the 9th U.S. National and 10th Canadian Conference on Earthquake Engineering: Reaching Beyond Borders, Toronto, Canada, July 25-29, 2010, paper 735.

Rezaeian, S., and Der Kiureghian, A., 2009, Simulation of ground motion time-histories: Proceedings of A U.S.-Iran Seismic Workshop on Improving Earthquake Mitigation through Innovations and Applications in Seismic Science, Engineering, Communication, and Response, Irvine, CA, June 29-July 1, 2009, Pacific Earthquake Engineering Research (PEER) Report 2009/02, p. 49-57.

Rezaeian, S., Der Kiureghian, A., and Bozorgnia, Y., 2008, Stochastic ground motion model with time-varying intensity, frequency and bandwidth characteristics: Proceedings of the 14th World Conference on Earthquake Engineering (14WCEE), Beijing, China, October 12-17, 2008, paper 03-03-0033.

Der Kiureghian, A., and Rezaeian, S., 2007, A stochastic model for earthquake ground motion with separable temporal and spectral nonstationarity: Proceedings of the 10th International Conference on Applications of Statistics and Probability in Civil Engineering (ICASP10), Kashiwa, Japan, July 31-August 3, 2007, p. 537-538.

 

ORGANIZED WORKSHOPS, MINI-SYMPOSIUMS, AND SPECIAL SESSIONS

1. August 2011: Co-Convener and Chair of Mini-Symposium MS331 on “Stochastic models and simulation of earthquake ground motions,” at the 11th International Conference on Applications of Statistics and Probability in Civil Engineering (ICASP11), Zurich, Switzerland.

2. April 2012: Co-Convener and Co-Chair of Special Session on “Validation of strong ground motion simulations for engineering applications,” at the 2012 Seismological Society of America (SSA) Annual Meeting, San Diego, CA.

3. December 2012: Co-Convener of Workshop on “Ground motion prediction equations for use in the 2014 USGS national seismic hazard maps (NSHM),” Berkeley, CA.

4. June 2013: Co-Convener and Chair of Mini-Symposium on “Young researchers in performance-based earthquake engineering,” at the 11th International Conference on Structural Safety & Reliability (ICOSSAR11), New York, NY.

5. September 2013: Co-Convener and Co-Chair of Workshop on “SCEC ground motion simulation (GMSV) technical activity group (TAG) progress and planning” at the 2013 Southern California Earthquake Center (SCEC) Annual Meeting, Palm Springs, CA.

6. May-August 2014: Co-Convener of Virtual Coordination Workshop on “Southern California Earthquake Center (SCEC) ground motion simulation (GMSV) technical activity group (TAG),” webinars are documented at:  http://collaborate.scec.org/gmsv/2014_Virtual_Coordination_Workshop

7. September 2014: Co-Convener and Co-Chair of Workshop on “SCEC ground motion simulation (GMSV) technical activity group (TAG) progress and planning,” at the 2014 Southern California Earthquake Center (SCEC) Annual Meeting, Palm Springs, CA.

8. May-August 2015: Co-Convener of Virtual Coordination Workshop on “Southern California Earthquake Center (SCEC) ground motion simulation (GMSV) technical activity group (TAG),” webinars are documented at: http://collaborate.scec.org/gmsv/2015_Virtual_Coordination_Workshop

9. July 2015: Co-Convener and Co-Chair of Mini-symposium MS20 on “Stochastic earthquake ground motion simulation, validation, and engineering applications” at the 12th International Conference on Applications of Statistics and Probability in Civil Engineering (ICASP12), Vancouver, CANADA.

10. July 2015: Co-Convener of Mini-symposium MS19 on “Risk-targeted response spectra for seismic design” at the 12th International Conference on Applications of Statistics and Probability in Civil Engineering (ICASP12), Vancouver, CANADA.

11. September 2015: Co-Organizer of “Applied Technology Council (ATC)/USGS Seismic Hazard User-Needs Workshop,” Applied Technology Council Report ATC-127, Menlo Park, CA.

12. September 2015: Co-Chair of Session on “Physics-based forecasting and ground motions,” at the 2015 Southern California Earthquake Center (SCEC) Annual Meeting, Palm Springs, CA.

13. June-August 2016: Co-Convener of Virtual Coordination Workshop on “Southern California Earthquake Center (SCEC) ground motion simulation (GMSV) technical activity group (TAG),” webinars are documented at:  http://collaborate.scec.org/gmsv/2016_Virtual_Coordination_Workshop

14. September 2016: Co-Convener and Chair of Workshop entitled “International workshop on ground motion simulation validation,” at the 2016 Southern California Earthquake Center (SCEC) Annual Meeting, Palm Springs, CA.

15. January 2017: Co-Convener of Special Session 92SS on “Applications of simulated ground motions in structural and geotechnical engineering,” at the 16th World Conference on Earthquake Engineering (16WCEE), Santiago, Chile.

16. June 2017: Organizer of a 1-day working meeting between the American Railway Engineering and Maintenance-of-Way Association (AREMA) Seismic Committee 9 and the USGS National Seismic Hazard Mapping project team, Golden, CO.

17. October 2017-Present: Co-Convener of Coordination Webinars for the “Southern California Earthquake Center (SCEC5) ground motion simulation (GMSV) technical activity group (TAG),” webinars are documented at:  https://sites.google.com/view/scec5-gmsv-tag/home

18. February 2018: Co-Convener and Co-Chair of Workshop on “The use of SCEC seismogram simulations for building response analysis,” Los Angeles, CA.   https://www.scec.org/workshops/2018/gmsv

19. May 2018: Co-Convener of Special Session on “USGS Seismic Hazard User-Needs,” at the 2018 Seismological Society of America (SSA) Annual Meeting, Miami, FL.

20. June 2018: Co-Convener of Special Session entitled “Mini-workshop on needs of users of the USGS national seismic hazard model,” at the 11th National Conference on Earthquake Engineering (11NCEE), Los Angeles, CA, Session SS025.S.

21. June 2018: Co-Convener of Special Session on “The science, engineering applications, and policy implications of simulation-based PSHA,” at the 11th National Conference on Earthquake Engineering (11NCEE), Los Angeles, CA, Session SS037.S.