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Home » Pubblicazioni » Is Blind Faulting Truly Invisible? Tectonic-Controlled Drainage Evolution in the Epicentral Area of the May 2012, Emilia-Romagna Earthquake Sequence (Northern Italy), in “Annals of Geophysics“, 55, 2012

Is Blind Faulting Truly Invisible? Tectonic-Controlled Drainage Evolution in the Epicentral Area of the May 2012, Emilia-Romagna Earthquake Sequence (Northern Italy), in “Annals of Geophysics“, 55, 2012

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Abstract:

"For decades, alluvial plains have been the areas of the fastest population growth over most of the globe. Modern societies demand growing extensions of flat and easily accessible land to accommodate the swelling urban areas, booming industrial districts, large power plants, and multi-runway airports. But how can we tell if such flat areas hide large active faults? How can we assign a significant pre-instrumental earthquake to its causative source? In other words, how can modern societies deal with buried, that is to say, ’invisible’ faults, and with the elusiveness of the hazards they can pose? The issue of blind faulting became widely debated in the Earth sciences community in 1989, following the publication of a summary on a sequence of ’hidden earthquakes’ that hit central and southern California, USA, between 1983 and 1987, and following the October 17, 1989, Loma Prieta, California, earthquake (Mw 6.9). These earthquakes shattered the accepted belief that large earthquakes are associated with large topographic contrasts; i.e., that they usually take place in mountainous terrains, and that their causative faults are expressed at the surface. Stein and Yeats [1989] spelled out clearly that "...large earthquakes can take place not only on faults that cut the Earth’s surface, but also on ’blind’ faults under folded terrain". Due to the growing concentrations of population and infrastructures in low topography areas, although such earthquakes might pose comparable hazards, they can come with substantially greater risk than earthquakes that occur in hilly or mountainous terrains."

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INFO BIBILIOGRAFICHE
In "Annals of geophysics", LV, 4
Anno
2012
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