Document: NUREG-0800
Document ID: cb9883f6-c1e9-4790-88d4-f8baedcd3240
Document Type: srp
Title: Seismicity. In meeting the requirement of Reference 1, this
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340591.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.2.1
CFR Part: 
CFR Title: 

Content:
subsection is accepted when the complete historical record of earthquakes in the region is listed and when all available parameters are given for each earthquake in the historical record. The listing should include all earth- quakes having Modified Mercalli Intensity (MMI) greater than or equal to IV or magnitude greater than or equal to 3.0 that have been reported in all tectonic provinces, any parts of which are within 200 miles of the site. A regional-scale map should be presented showing all listed earthquake epicenters and should be supplemented by a larger-scale map showing earthquake epicenters of all known events within 50 miles of the site. The following information concerning each earthquake is required whenever it is available: epicenter coordinates, depth of focus, origin time, highest intensity, magnitude, seismic moment, source mechanism, source dimensions, distance from the site, and any strong- motion recordings (references from which the information was obtained should be identified). -All magnitude designations such as mb, ML, Ms$ M , etc., should be identified. In addition, any reported earthquake-induced geologic failure, such as liquefaction, landsliding, landspreading, and lurching should be described completely, including the level of strong motion that induced failure and the physical properties of the materials. The completeness of the earthquake history of the region is determined by comparison to published sources of information (e.g., Refs. 9 through 13). When conflicting descrip- tions of individual earthquakes are found in the published references, the staff should determine which is appropriate for licensing decisions.