.With an extensive content revamp, new graphics and new features, the new version of the Database of Individual Seismogenic Sources (DISS) has been released
Il , created by a team of researchers from the National Institute of Geophysics and Volcanology (INGV), is a georeferenced archive of seismogenic faults (or potentially capable of generating earthquakes), identified over the years through geological, geophysical and historical data and studies. It is expressly dedicated to applications in the assessment of seismic hazard on a regional and national scale, as well as to the development of geodynamic models.
With its multiple navigation tools, the new DISS version 3.3.0 is totally renewed. By simply viewing the map it is possible to “see” in three dimensions the seismogenic sources or, more simply, the faults that have caused or may cause strong earthquakes in our national territory, in some adjacent areas and in a large part of the central Mediterranean. It is also possible to consult the vast documentation that accompanies the sources, and finally it is possible to represent alongside them the contents of various other databases, including those of instrumental and historical seismicity.
Browsing the maps, today it is possible to consult the "individual sources", which generally represent the faults that caused the strong earthquakes of the past; “composite sources”, i.e. simplified representations of extended fault systems which may include some individual sources; and the "subduction zones", which propose a simplified structure of these important geodynamic elements. Finally, the "debated sources" are also visible, i.e. those active faults that a part of the scientific literature proposes as potential seismogenic faults, but for which sufficiently complete knowledge does not yet exist.
The Database, launched over twenty years ago in its very first edition in 2001, was created with the aim of investigating and systematizing knowledge on the seismogenesis of the Italian territory. Subsequent developments, due both to the improvement of geological-geophysical knowledge of the Italian peninsula (in turn largely due to the occurrence of strong earthquakes that have followed one another over the years, from the Molise sequence of 2002 up to that of Central Italy in 2016 -2017), and new uses in the field of seismic and tsunami hazards, have brought about profound transformations to the structure of DISS and to the types of sources it contains.
For the new version of the DISS, the most recent knowledge on the subduction of the Calabro Arc has been considered, the structure of the sources of the central Apennines has been completely reworked following the innovations that emerged from the 2016-2017 sequence, and numerous areas of the central and southern Adriatic, the Ionian and the Strait of Sicily. Furthermore, referring to the most up-to-date scaling laws available today, a new criterion has been applied for estimating the strongest earthquake that seismogenic sources can generate (Mmax).
The contents of this new version of the DISS have already been used in the context of the new one.
All versions of DISS are in files of various formats and can be used through web services for interoperability that follow the standard of. The picture is completed by a tool that allows interoperability between the DISS and ITHACA, the database of active and capable faults managed by ISPRA.
The new version of the DISS, therefore, contributes to redefine and detail the seismogenesis model at the scale of the central Mediterranean, providing a modern consultation and investigation tool, aimed not only at researchers but also at professionals involved in the design of works of various kinds and in the micro-zoning of the territory, as well as the technicians and institutional decision-makers in charge of risk prevention and management.
#DISS #SorgenteSismogenetica #FagliaAttiva #subduction #ESHM20
A NEW WEBSITE FOR THE SEISMOGENIC SOURCES DATABASE
With extensive content renewal, new graphics and new features, the new version of the Database of Individual Seismogenic Sources (DISS) is online
The , created by a team of researchers from the National Institute of Geophysics and Volcanology (INGV), is a georeferenced archive of seismogenic faults (ie potentially capable of generating earthquakes), identified over the years through geological, geophysical and historical data and studies. It is expressly dedicated to applications of seismic hazard assessment on a regional and national scale, as well as to the development of geodynamic models.
With its multiple navigation tools, the new 3.3.0 version of DISS is totally renewed. Through the simple visualization on map, it is possible to “see” in three dimensions the seismogenic sources, or more simply the faults which caused or can cause strong earthquakes in Italy's National territory, in some adjacent areas and in a large part of the central Mediterranean. It is also possible to browse through the extensive documentation that accompanies the sources, and it is also possible to represent the content of various other databases alongside the sources, including those of instrumental and historical seismicity.
Browsing the maps, today it is possible to consult the “individual sources”, which generally represent the faults that caused strong earthquakes of the past; the "composite sources", ie, simplified representations of extended fault systems that may include a number of individual sources; and the “subduction zones”, which offer a simplified structure of these prominent geodynamic elements. Finally, the "debated sources" are also visible, ie those active faults that some of the scientific literature proposes as potential seismogenic faults, but for which sufficient knowledge does not yet exist.
The Database, which started over twenty years ago in its very first edition in 2001, was born with the aim of investigating and systematizing knowledge on the seismogenesis of the Italian territory. The subsequent developments, due both to the improvement of the geological-geophysical knowledge of the Italian peninsula (in turn largely due to the occurrence of the strong earthquakes that have occurred over the years, from the Molise sequence in 2002 to that of Central Italy in 2016-2017), and to the new applications in the field of seismic and tsunami hazards, have brought about profound transformations to the structure of DISS and to the types of sources it contains.
For the new version of the DISS, the most recent knowledge on the subduction of the Calabrian Arc has been considered, and the arrangement of the sources of the central Apennines has been completely reworked following the innovations that emerged from the 2016-2017 sequence, as numerous areas of the central and southern Adriatic Sea, the Ionian Sea and the Strait of Sicily have been reconsidered. Furthermore, referring to the most up-to-date scaling laws, a new criterion for estimating the strongest earthquake that seismogenic sources can generate (Mmax) was applied.
The contents of this new version of the DISS have already been used in the context of the new .
All versions of DISS can be in various file formats and can be accessed through the web services for interoperability that adhere to the standard. The features include a tool that allows interoperability between DISS and ITHACA, the database of active and capable faults maintained by ISPRA.
The new version of the DISS, therefore, contributes to redefine and outline the seismogenic model at the scale of the central Mediterranean, providing a modern tool for consultation and direct investigation not only to researchers but also to practitioners involved in designing infrastructures of various kinds and in the microzonation of the territory, as well as stakeholders and institutional decision-makers in charge of risk prevention and management.
#DISS #SeismogenicSource #faults #subduction #ESHM20