| Titre | Horizontal-to-vertical ground motion relations at short distances for four hard-rock sites in eastern Canada and implications for seismic hazard assessment |
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| Auteur | Bent, A L; Delahaye, E J |
| Source | Continental intraplate earthquakes: science, hazard, and policy issues; par Stein, S (éd.); Mazzotti, S (éd.); Geological Society of America, Special Paper vol. 425, 2007 p. 345-352, https://doi.org/10.1130/2007.2425(22) |
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| Année | 2007 |
| Séries alt. | Secteur des sciences de la Terre, Contribution externe 20060131 |
| Éditeur | Geological Society of America |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.1130/2007.2425(22) |
| Media | papier; en ligne; numérique |
| Formats | html; pdf (Adobe® Reader®) |
| Programme | Réduction des risques dus aux aléas naturels |
| Diffusé | 2007 01 01 |
| Résumé | (disponible en anglais seulement)
Horizontal-to-vertical (H/V) ground-motion relations were determined for four long-running, three-component broadband seismograph stations situated on hard rock
in eastern Canada. We focused our attention on earthquakes of magnitude 2.5 and greater at close range (<200 km) to each station because most earthquake damage results from nearby earthquakes. An H/V value of ~2 is the general average for eastern
Canada, although there are some differences from station to station. H/V in general increases with increasing frequency. There is little or no systematic variation in H/V as a function of either distance or magnitude. The H/V ratios obtained in this
study are somewhat higher than previously published values. Much of the difference appears to be due to the use of different definitions of H rather than to differences in the data sets and/or methods of data processing and analysis. These results
raise questions regarding the best definition for H for use in hazard assessment. |
| GEOSCAN ID | 222508 |
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