Magnitude Formulae and Intensity–Magnitude Relations for Early Instrumental Earthquakes in the Iberian Region

Elena Samardjieva, Gonzalo Payo and Jose Badal

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 1999, vol. 19, issue 2, 189-204

Abstract: The magnitudes of early instrumentally recorded earthquakes in the Iberian region (1912–1962) have been studied through processing of digitized seismograms of Wiechert seismograph and analysis of macroseismic information. A magnitude system based on instrumental registrations and macroseismic observations has been proposed. It consists of two compatible magnitude formulae depending on the total duration of seismic oscillations and on the maximum ground amplitude/period ratio of surface waves and includes correspondent intensity–magnitude relationships. Copyright Kluwer Academic Publishers 1999

Keywords: early instrumental earthquakes; magnitude; intensity–magnitude relationships; Iberian region (search for similar items in EconPapers)
Date: 1999
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DOI: 10.1023/A:1008057832374

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