So sánh phương pháp

	Deterministic Seismic Hazard Analysis	Phân tích Nguy hiểm Địa chấn Xác suất (PSHA)
Lĩnh vực	Disaster Studies	Kỹ thuật xây dựng
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1990	1968
Người khởi xướng	Leon Reiter (codification); classical engineering-seismology practice	C. Allin Cornell
Loại	Scenario-based ground-motion estimation pipeline	Quantitative probabilistic framework
Công trình gốc	Reiter, L. (1990). Earthquake Hazard Analysis: Issues and Insights. New York: Columbia University Press. ISBN: 9780231065344	Cornell, C. A. (1968). Engineering seismic risk analysis. Bulletin of the Seismological Society of America, 58(5), 1583–1606.
Tên gọi khác	DSHA, Scenario Earthquake Analysis, Maximum Credible Earthquake Analysis, Deterministic Ground-Motion Estimation	PSHA, seismic hazard analysis, probabilistic earthquake hazard assessment, Cornell-McGuire method
Liên quan	3	1
Tóm tắt	Deterministic Seismic Hazard Analysis (DSHA) estimates the ground motion a site would experience from a specific, postulated earthquake scenario rather than from the full probabilistic aggregation of all possible earthquakes. The analyst identifies the seismic sources capable of affecting the site, assigns each a maximum magnitude and a closest distance, and then asks what shaking the most demanding of these scenarios would produce. Leon Reiter's 1990 text codified the four-step DSHA procedure that remains the textbook reference, situating it alongside the probabilistic framework that Cornell introduced in 1968. The output is typically a single design ground motion or response spectrum, often computed at the median or median-plus-one-standard-deviation level. DSHA answers the question 'what is the worst shaking a credible earthquake could deliver here?' rather than 'how often is a given shaking level exceeded?'. It remains central to critical-facility design, scenario emergency planning, and as a deterministic cap on probabilistic results.	Probabilistic Seismic Hazard Analysis (PSHA) is a quantitative engineering framework used in civil and geotechnical engineering to estimate the likelihood that ground shaking will exceed a specified intensity level at a site within a given time window. By combining earthquake source geometry, recurrence statistics, and ground-motion attenuation models, PSHA produces hazard curves and maps that inform seismic design codes, infrastructure planning, and risk management decisions.