170 research outputs found
Palaeoseismology: Historical and Prehistorical Records of Earthquake Ground Effects for Seismic Hazard Assessment.
No full textReicherter, K., Michetti, A.M. & Silva, P.G. (Eds.), 2009, Palaeoseismology: Historical and Prehistorical Records of Earthquake Ground Effects for Seismic Hazard Assessment. The Geological Society, London, Special Publications, 316, 320 p. DOI: 10.1144/SP316.9 0305-8719/09 # The Geological Society of London 2009
Terremoti olocenici lungo la Faglia del Pollino (Calabria Settentrionale): nota preliminare.
No full textIn: Michetti A.M., "Paleosismologia e pericolosità sismica: stato delle conoscenze ed ipotesi di sviluppo", C.N.R.- GNDT, Rendiconti, 2, Roma, 65-8
Correction to: Size‐Dependent Enforcement, Tax Evasion and Dimensional Trap
No full textThe article “Size‐Dependent Enforcement, Tax Evasion and Dimensional Trap”, written by Raffaella Coppier, Elisabetta Michetti and Luisa Scaccia, was originally published electronically on the publisher’s internet portal on 05 July 2023 without open access. With the author(s)’ decision to opt for Open Choice the copyright of the article changed on 24 February 2024 to © The Author(s) 2024 and the article is forthwith distributed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made
Future trends in paleoseismology: Integrated study of the seismic landscape as a vital tool in seismic hazard analyses
No full textThis paper forms the Introduction to this Special Issue of Tectonophysics, devoted to selected scientific research
presented during events sponsored by the INQUA Subcommission on Paleoseismicity in the past few years. In this
note, we summarize the contents of the contributed papers and use the issues they raise to review the state-of-the-art in
paleoseismology from a Quaternary geology perspective. In our opinion, the evolution of paleoseismological studies in
the past decade clearly demonstrates that in order to properly understand the seismic potential of a region, and to
assess the associated hazards, broad-based/multidisciplinary studies are necessary to take full advantage from the
geological evidence of past earthquakes. A major challenge in future paleoseismic research is to build detailed
empirical relations between various categories of coseismic effects in the natural environment and earthquake magnitude/
intensity. These relations should be compiled in a way that is fully representative of the wide variety of natural
environments on Earth, in terms of climatic settings, Quaternary tectonic evolution, rheological parameters of the
seismogenic crust, and stress environment. For instance, available data indicate that between earthquake magnitude and
surface faulting parameters different scaling laws exist, and they are a function of the local geodynamic setting
(including style of faulting, typical focal depths, heat flow). In this regard, we discuss in some detail the concept of
seismic landscape, which provides the necessary background for developing paleoseismological research strategies. The
large amount of paleoseismological data collected in recent years shows that each earthquake source creates a signature
on the geology and the geomorphology of an area that is unequivocally related with the order of magnitude of its
earthquake potential. This signature is defined as the seismic landscape of the area (e.g., Serva, L., Vittori, E., Ferreli,
L., Michetti, A.M., 1997. Geology and seismic hazard. In: Grellet, B., Mohammadioun, B., Hays, W. (Eds.),
Proceedings of the Second France–United States Workshop on Earthquake Hazard Assessment in Intraplate Regions:
Central and Eastern United States and Western Europe, October 16, 1995, Nice, France, 20–24, Ouest Editions, Nantes,
France; Michetti, A.M., Hancock, P.L., 1997. Paleoseismology: understanding past earthquakes using quaternary geology Journal of Geodynamics 24 (1–4), 3–10). We then illustrate how this relatively new framework is helpful in understanding
the seismic behavior of faults capable of producing surface faulting and provides a comprehensive approach for the use of
paleoseismicity data in earthquake hazard characterization
THE RESOLUTION OF GEOLOGICAL ANALYSIS AND MODELS FOR EARTHQUAKE FAULTING STUDIES
No full textThe workshop was jointly organised by the Geo-Structural and Tectonic Studies Group (GST) of the University of Camerino, as a contribution to the research Project “Neotectonics and active tectonics in Apennines“ co-funded by MURST (Ministero dell’Università e della Ricerca Scientifica e Tecnologica), and by the Italian Agency for Environmental Protection (ANPA).
The aim of the workshop, attended by about 90 researchers from many different countries (Australia, France, Italy, Japan, New Zealand, Russia, USA), was that of providing a forum for specialists of various disciplines in order to discuss the different aspects of earthquake geology and their bearing on seismic hazard analysis. The in-door session of the meeting was preceded by a two-day field trip in central Italy, where surface faulting effects associated with damaging earthquakes (Norcia-L’Aquila, 1703, M=7.0; Fucino, 1915, M=7.0; Norcia, 1979, M=5.9; Colfiorito, 1997, M=6.0) are clearly recorded within both the carbonate basement units of the Apennines and the Quaternary continental deposits filling the intramontane basins of the apenninic mountain range.
The workshop was convened by E. Tondi (GST) and A.M. Michetti (ANPA) and was supported by an organizing committee (G. Cello and G. Deiana for the GST, and L. Serva and E. Vittori for the ANPA). The secretarial work was carried out mostly by C. Invernizzi and L. Marchegiani (GST), with the help of graduate and post-graduate students of the Earth Science Department of Camerino University
Geological Criteria for Evaluating Seismicity Revisited: Forty Years of Paleoseismic Investigations and the Natural Record of Past Earthquakes
No full textThe identification of individual past earthquakes and their characterization in time and space, as well as in magnitude, can be approached in many different ways with a large variety of methods and techniques, using a wide spectrum of objects and
features. We revise the stratigraphic and geomorphic evidence currently used in the study of paleoseismicity, after more than three decades since the work by Allen (1975),
which was arguably the first critical overview in the field of earthquake geology. Natural objects or geomarkers suitable for paleoseismic analyses are essentially preserved
in the sediments, and in a broader sense, in the geologic record. Therefore, the study of these features requires the involvement of geoscientists, but very frequently it is a
multidisciplinary effort. The constructed environment and heritage, which typically are the focus of archaeoseismology and macroseismology, here are left aside. The geomarkers
suitable to paleoseismic assessment can be grouped based on their physical relation to the earthquake’s causative fault. If directly associated with the fault surface
rupture, these objects are known as direct or on-fault features (primary effects in the Environmental Seismic Intensity [ESI] 2007 scale). Conversely, those indicators not in direct contact with the fault plane are known as indirect or off-fault evidence
(secondary effects in the ESI 2007 scale). This second class of evidence can be subdivided into three types or subclasses: type A, which encompasses seismically induced effects, including soft-sediment deformation (soil liquefaction, mud diapirism), mass
movements (including slumps), broken (disturbed) speleothems, fallen precarious rocks, shattered basement rocks, and marks of degassing (pockmarks, mud volcanoes); type B, which consists of remobilized and redeposited sediments (turbidites, homogenites, and tsunamites) and transported rock fragments (erratic blocks); and type C, entailing regional markers of uplift or subsidence (such as reef tracts, microatolls, terrace risers, river channels, and in some cases progressive unconformities).
The first subclass of objects (type A) is generated by seismic shaking. The second subclass (type B) relates either to water bodies set in motion by the earthquake (for the sediments and erratic blocks) or to earthquake shaking; in a general way, they all relate to wave propagation through different materials. The third subclass (type C) is mostly related to the tectonic deformation itself and can range from local (next to the causative fault) to regional scale.
The natural exposure of the paleoseismic objects—which necessarily conditions the paleoseismic approach employed—is largely controlled by the geodynamic setting.
For instance, oceanic subduction zones are mostly submarine, while collisional settings tend to occur in continental environments. Divergent and wrenching margins may occur anywhere, in any marine, transitional, or continental environment.
Despite the fact that most past subduction earthquakes have to be assessed through indirect evidence, paleoseismic analyses of this category of events have made dramatic progress recently, owing to the increasingly catastrophic impact that they have on human society
Considerazioni su Cesare Baronio e la Spagna, tra controversia politica e ricezione erudita
No full textThe study is focused on the complex relationship within Cesare baronio and the Spanish Monarchy, in the new political and historical context. As a cardinal, as pope confessor, as author, he had a preminent role in all the most relavant disputes between Rome, Madrid and Paris of the beginning of the 17th cent., when the balances and the alliances inside the the catholicism were changing.
Ma è poi tanto pacifico che l’albero rispecchi l’archivio?
No full textThe Author investigates the hierarchical nature of XML structures and the way it influences the representation of archival materials: focusing on the widespread habit of referring to and depicting archives as trees, the Author highlights some major concerns and restraints related to a hierarchy-oriented approach, whereas the complex nature of archives needs to be represented through different and richer strategies
EAC: Elementi per un Approccio Critico
No full textThe Author highlights the poor spread of EAD/EAC in Italy and analyses the causes considering the broader context of standardization processes: to this aim, the Author identifies well defined problems related to political, cultural, and technical aspects. Particular attention is devoted to the analysis of some doubts and uncertainties arising from the beta version of EAC: suggestions and solutions are presented in the paper
Diritto al silenzio e insider trading: il confronto tra Roma e Lussemburgo prosegue sulla via del dialogo (Corte costituzionale, sentenza n. 84/2021)
No full textWith decision n. 84/2021, the Constitutional Court declared the unconstitutionality of art.
187 – quinquiesdecies (d.lgs. n. 58/1998), relating to the crime of insider trading as it violates the right to
remain silent (art. 24 Cost.). The Author analyzes the decision, highlighting how it is an important
moment of dialogue with Court of Justice, aimed at protecting rights and freedoms in compliance with the
European Charter of Fundamental Rightsand the italian constitutional tradition
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