{ "_id": "6a59159209eb0996dd68bead", "Package": "newmark", "Type": "Package", "Title": "Uncertainty Analysis in Dynamic Site and Slope Response", "Version": "1.3.0", "Authors@R": "person(given = \"Alejandro\",\nfamily = \"Verri Kozlowski\",\nemail = \"averri@fi.uba.ar\",\nrole = c(\"aut\", \"cre\", \"cph\"))", "Description": "Implements a four-stage pipeline for probabilistic seismic\nperformance analysis of slopes and embankments. The package\ntakes a uniform-hazard spectrum at multiple return periods as\ninput (any source) and produces: (1) synthetic soil profile\ngeneration and fundamental period estimation from USCS\nclassification via Ishihara's small-strain shear-modulus model\nand the inhomogeneous truncated shear-beam theory of Gazetas\nand Dakoulas; (2) nonlinear site amplification using the\nNGA-East ergodic site-response models (Stewart et al. (2020)\n and Hashash et al. (2020)\n, with the 2017 PEER-report\ngeneration retained as an option), with inter-period\ncorrelation via Baker & Jayaram (2008) ;\n(3) Monte Carlo ensemble of six empirical Newmark sliding-block\ndisplacement models (Ambraseys & Menu (1988)\n, Jibson (2007)\n, Saygili & Rathje (2008)\n, Bray &\nTravasarou (2007)\n, Bray & Macedo\n(2017) , and the Bray and\nMacedo shallow-crustal update) with coherent correlated draws;\n(4) log-log inversion to the performance-based seismic\ncoefficient kmax at user-specified displacement targets. 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