Tsunami preparedness and resilience in the Cascadia Subduction Zone: A multistage model of expected evacuation decisions and mode choice

Physical scientists have estimated that the Cascadia Subduction Zone (CSZ) has as much a 25% chance to produce M9.0 earthquake and tsunami in next 50 years, but few studies used survey data assess household risk perceptions, emergency preparedness, evacuation intentions. To understand these phenomena, this study conducted mail-based questionnaire using Protective Action Decision Model (PADM) guide collect 483 responses from two coastal communities CSZ: Crescent City, CA Coos Bay, OR. We applied multistage regression models effects of critical PADM variables. The results showed three psychological variables (risk perception, perceived hazard knowledge, mode efficacy) were associated with some demographic experience Evacuation intention choice are those not Contrary previous studies, location had no direct impact on or choice. also analyzed expected compliance potential micro-mobility during response. This provides empirical evidence preparedness intentions support interdisciplinary modeling, education, community disaster resilience plans.