The COSMOS/EERI/SSA Bruce Bolt Medal

The Bruce Bolt Medal is awarded jointly by the Consortium of Strong Motion Observations Systems (COSMOS), Earthquake Engineering Research Institute (EERI) and SSA to recognize individuals worldwide whose accomplishments involve the promotion and use of strong-motion earthquake data and whose leadership in the transfer of scientific and engineering knowledge into practice or policy has led to improved seismic safety. 

The following three criteria are used to select the recipient: 1) promotion of strong-motion instrumentation or advancing strong-motion data processing or data utilization, 2) technical contributions in seismic engineering or engineering seismology, and 3) leadership in the transfer of knowledge into practice or policy that has led to improved seismic safety. 

The award is issued annually and is presented to the recipient at the annual meeting of the recipient’s choice among the three sponsoring organizations.

Nomination Process
COSMOS, EERI and SSA members are encouraged to nominate a colleague or peer for this prestigious honor. Complete nomination packages should be submitted using this form:

The extended deadline to submit nominations for the 2023 Bruce Bolt Medal is July 24, 2022 at 11:59 p.m. Pacific Time. Incomplete nomination packages will not be considered by the Joint Selection Committee.

Nomination Materials
A complete nomination package must include the following:

  1. A nomination letter, written and submitted by the chief nominator. It should be no longer than two pages and must address the ways in which the candidate meets all three of the selection criteria provided below.
  2. A Curriculum Vitae for the nominee or a substantial summary of the professional history of the candidate, including employment, significant publications, honors, activities and accomplishments relevant to the Bolt Medal criteria.
  3. The current contact information for the candidate.
  4. The nomination must be endorsed by three additional individuals, either by adding their signature to the nominating letter or by providing an additional individual letter of support. Such individual letters should include a personal perspective on the nominee and their sustained impact on the field.
  5. A signed nominator disclosure form submitted by the chief nominator. Click here to download this form.

Please note, the nomination form requires a google account to submit. If you do not have a google account, you can submit your materials by sending them in an email to

Selection Criteria
In the spirit of Bruce Bolt’s contribution to the science, the chosen recipient must meet all of the below three (3) criteria:

  1. Promotion of strong-motion instrumentation or advancing strong-motion data processing or publicly-available data utilization;
  2. Technical contributions in earthquake engineering or engineering seismology; and
  3. Leadership in the transfer of knowledge into practice or policy that has led to improved seismic safety.

Nominations will be reviewed in confidence by a six-person Joint Selection Committee formed by two representatives from each of the three sponsoring organizations. The recommended nominee will be considered in confidence by each organization’s Board of Directors for their approval and joint selection of the medalist.

  • 2022 Selection Committee Members:
    • Brad Aagaard (COSMOS)
    • Gail Atkinson (SSA)
    • Hamid Haddadi (COSMOS)
    • Ting Lin (EERI)
    • Robert Nigbor (Chair of the Committee – EERI)
    • Ruth Harris (SSA)

Any questions regarding this award should be sent to

2022 Bruce Bolt Medalist

C.B. Crouse received his Ph.D. degree in civil engineering from Caltech. He was one of the early researchers to collect and use strong motion data to develop ground motion models (GMMs) for shallow crustal and subduction zone earthquakes. Since 2000, Crouse has chaired the ground motion and foundation design subcommittees for the National Earthquake Hazards Reduction Program (NEHRP) and American Society for Civil Engineers (ASCE) 7 seismic provisions. He is a former COSMOS and EERI board member and former associate editor of the Bulletin of the Seismological Society of America. Crouse has authored or coauthored some 75 earthquake engineering publications.

As chairman of the Southern California Earthquake Center (SCEC) Utilization of Ground Motion Simulations committee, he led the development of a web-based tool for obtaining site-specific MCER response spectra for Southern California per the requirements in Chapter 21 of ASCE 7-16. The approach used both the NGA West2 GMMs and 3D physics-based numerical simulations of ground motions from CyberShake.