Assessment of Ground-Motion Models for Use in the British Columbia North Coast Region, Canada

Measuring the Performance of Ground‐Motion Models: The Importance of Being Independent

“…We used this pair of GMMs and data subsets to demonstrate the importance of data independence in data-driven GMM evaluations. 1997BJF is the only predecessor of the NGA GMMs that provides the complete dispersion information regarding the within-and between-event sigmas, so that a Allen and Brillon (2015) Haida Gwaii, Canada Yes; foreign models Drouet and Cotton (2015) France Alps Yes; stochastic models Haendel et al (2015) Northern Zafarani and Farhadi (2017) Iran No *"No" indicates studies in which a significant portion of the test data has been used to develop some of the evaluated models. "foreign models" indicates that foreign models are evaluated using local tests, so the data are naturally independent of the models; similarly for "stochastic models."…”

Introduction to the Special Issue on the 2012 Haida Gwaii and 2013 Craig Earthquakes at the Pacific-North America Plate Boundary (British Columbia and Alaska)

“…Published ground-motion models (GMMs) were evaluated for northern coastal British Columbia using the Haida Gwaii event, its aftershocks, and other earthquakes in the region of the plate boundary with magnitudes M w 4.6-7.8 (Allen and Brillon, 2015). Pseudospectral accelerations were generally overestimated by the GMMs by a factor of 2 or more across most of the spectral period range for recorded near-source (< 100 km) ground motions.…”