This paper discusses the source- and site-effects on the distribution of macroseismic intensity, estimated or observed, following the 29 July 2008 M 5.4 earthquake in the greater Los Angeles metropolitan region. We refer to the instrumental intensities according to the ShakeMap procedure (Wald et al. 2006) and the U.S. Geological Survey (USGS) Community Internet Intensity Map (CIIM; Atkinson and Wald 2007). The CIIMs are also known as the “Did You Feel It?” questionnaires (DYFI). Both ShakeMap and CIIM are openly available through the USGS Web site ( Note that the traditional modified Mercalli intensities (MMI;...

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