E-M-A-M emergency management methodology and application

As risks grow increasingly complex and the field of emergency management evolves, there is an urgent need for methodological advancements. In response, this study introduces the E-M-A-M emergency management methodology, grounded in systems theory. The methodology follows a structured logical framework: (1) Effect Analysis (E) provides a phenomenological explanation of the observed phenomena; (2) Intrinsic Mechanism Analysis (M) delves into the underlying mechanisms of emergencies; (3) Comprehensive Risk Analysis (A) integrates various dimensions to construct a holistic understanding of the risk landscape; and (4) Management Mechanism Design (M), based on mechanism design theory, offers practical strategies for improving emergency management systems. To illustrate its application, the study employs the '23·7' heavy rainfall in the Beijing-Tianjin-Hebei region as a case study, detailing the operational steps of the E-M-A-M methodology. This research aims to provide a systematic and standardized approach for advancing emergency management studies and addressing real-world challenges.