Interperiod Correlation Model for Mexican Interface Earthquakes. Issue 3 (August 2019)

• Record Type: Journal Article
• Authors: Jaimes, Miguel A.; Candia, Gabriel
• Is Part Of: Earthquake spectra. Volume 35:Issue 3(2019)
• Page Start: 1351
• Page End: 1365
• Publication Date: 2019-08
• Subjects: Earthquake engineering -- Periodicals; Earthquake engineering; Periodicals; 624.1762
• DOI: 10.1193/080918EQS200M
• Languages: English
• ISSNs: 8755-2930

Abstract

This article presents a correlation model for pseudo-acceleration, peak ground acceleration, and peak ground velocity residuals using a database of Mexican subduction interface earthquakes at rock sites (NEHRP Class B). A mixed-effect regression model, a ground motion model, and 40 event recordings (418 records) with moment magnitude between five and eight were used to develop a magnitude-independent correlation model. This region-specific model yields consistently higher correlation values compared with similar studies developed for shallow crustal regions and other subduction zones worldwide, particularly for pseudo-acceleration values at distant periods. These results support the idea of using a region-specific and mechanism-specific correlation model for Mexico's subduction zone.