Intensity scales define the criteria used to determine different levels of shaking in relation to environmental effects. Objective evaluations of low‐intensity degrees based on transient effects may be difficult. In particular, estimations for the number of people feeling an earthquake are critical and are qualitatively described by words such as “few,” “many,” and “most” for determining various intensity levels. In general, such qualitative amounts are converted into specific percentages for each macroseismic scale. Additionally, estimations of macroseismic intensity are influenced by variables that are mentioned in macroseismic scale degree descriptions. For example, the Mercalli–Cancani–Sieberg (MCS; Sieberg, 1930) and the...

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