Author Archives: Emel Seyhan

Emel Seyhan

About Emel Seyhan

Principal Modeler - Earthquake, Model Development, RMS

Emel leads global ground motion modeling and site effects including nonlinear site amplification and sedimentary basin modeling for RMS earthquake projects. She joined RMS six years ago after her postdoctoral studies at Pacific Earthquake Engineering Research Center (PEER) in University of California, Berkeley.

Among her many accomplishments, Emel completed over five RMS projects so far, has published ten peer-reviewed journal papers between 2013-2020, some of which were ranked among the most cited publications. Worldwide, her published models have been used as reference models by the scientists, academics and practicing engineers including USGS, Global Earthquake Model (GEM), and Geoscience Australia. She is most well known for her NGA-West 2 models.

Emel continues to consult and play an active role in national and international engineering and seismic hazard projects. Emel holds a Ph.D. and a master's degree in Civil Engineering (Geotechnical) from the University of California, Los Angeles.

2018 USGS Hazard Map Updates: Is RMS Revising the U.S. Earthquake Model?

In March 2018, RMS hosted the U.S. Geological Survey (USGS) workshop at our Newark headquarters in California to discuss the interim updates planned for the 2018 USGS National Seismic Hazard Map Project (NSHMP). Details can be found in my previous blog: Are You Ready for an Interim USGS NSHM Update?

The USGS informed the public and technical community about this interim update ahead of their regular six-year cycle of updates anticipated after 2020. The main purpose was to incorporate new ground motion modeling advances for Central and Eastern U.S. from Project 17, which has significant value for the national building code (details can be found here).

Towards the end of 2018, the USGS published the draft document and national hazard maps to receive scientific peer review and public feedback from the user community (Petersen et al. 2018). Since then, the USGS has been very busy incorporating the updates and finalizing the models. In December 2019, they published the official 2018 USGS NSHMP document in the Earthquake Spectra journal.

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Are You Ready for an Interim USGS NSHM Update?

RMS recently hosted a two-day workshop for the United States Geological Survey (USGS) on March 7-8, based at our Newark headquarters in California. The aim of the workshop was to both discuss and receive feedback from the scientific community on the interim update to the ongoing 2018 USGS National Seismic Hazard Map Project (NSHMP).

RMS works actively with the USGS and the community and has previously hosted USGS workshops to help facilitate scientific discussions and to improve understanding of earthquake hazard. The workshop was well attended by over 150 people from academia, the scientific community, and industry.

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