Publication Date:
2017-04-04
Description:
Having a reliable site conditions estimate is an important step to analyze and predict earthquake
ground motions. To provide this information for the Campania-Lucania region (southern Apennines,
Italy), in the framework of a collaboration with regional civil protection agency, geologic units
shown on 1:250,000 scale geologic map, have been sorted together into four categories based on
age and geological similarities. According to the site classification defined in engineering building
codes, we have assigned to each site classes, a value or range of values of the average shear-wave
velocity to 30 m (Vs30) and of the site dominant period. Thus, we have digitized the category
boundaries from the map tracing only the geologic contacts that separate units of different site
classes. The accuracy of the site-conditions map is only limited by the number of Vs profiles, used
to compute the Vs30, and geologic data available so far. Analyses with new data will allow updates
and modifications of this map. Anyhow, the resulting site classification map may be an helpful tool
to better characterizing the sites effects for those applications where amplification values at large
scale are need, such as ground-shaking maps or seismic hazard maps.
Description:
Published
Description:
27-37
Description:
4.2. TTC - Modelli per la stima della pericolosità sismica a scala nazionale
Description:
JCR Journal
Description:
open
Keywords:
Site-conditions map
;
site effects
;
seismic hazard
;
shear-wave velocity
;
04. Solid Earth::04.06. Seismology::04.06.04. Ground motion
;
04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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