Skip to main content

Index Geophysics

Effects of site geology on the attenuation of macroseismic intensity in Central Greece


Title (Dublin Core)

eng Effects of site geology on the attenuation of macroseismic intensity in Central Greece
hrv Utjecaj lokalnih geoloških svojstava na prigušenje makroseizmičkog intenziteta u središnjoj Grčkoj

Description (Dublin Core)

eng The contribution of different categories of local geological conditions to the observed macroseismic intensities in Central Greece is investigated. The method is developed using two large earthquakes in the Halmyros Basin, Central Greece. The main parameters of the earthquakes chosen are: 1975 March 8, 6.8 Ms and 1980 July 9, 6.2 Ms, both near Volos-Halmyros. They were both shallow earthquakes, with maximum observed intensities of IX+ and VIII+ respectively, while the available macroseismic and surface geological information comes from about 230 and 570 sites respectively. There are five main surface geological categories, in which the data can be classified. Differences between, and recent revisions of, intensity scales are considered in order to eliminate possible over- or under-estimates of intensity and to obtain a homogeneous intensity data set.

Attenuation laws are derived using both earthquakes and they are compared to determine the attenuation factors appropriate for different rock types. They are also tested for different azimuths from the macroseismic epicentre in order to assess the influence of the radiation pattern of the earthquake in relation to the degree of attenuation in a specific direction. The comparison of the detailed intensity results with strong motion data from the same area and in different geological formations, indicates that there is some relation between them.

Creator (Dublin Core)

Kouskouna, Vicky
Makropoulos, Kostas
Drakopoulos, John
Burton, Paul

Publisher (Dublin Core)

Andrija Mohorovicic Geophysical Institute

Date (Dublin Core)


Type (Dublin Core)


Format (Dublin Core)


Identifier (Dublin Core)

Source (Dublin Core)

ISSN 0352-3659 (Print)
ISSN 1846-6346 (Online)
Volume 5
Issue 1

Language (Dublin Core)


Rights (Dublin Core)

All manuscripts published on-line are subject to Creative Commons Attribution-NonCommercial 4.0 International License which permits users to read, download, copy, redistribute, print, search, or link to the full texts of these articles in any medium or format. Also, users can remix, transform and build upon the material, provided the original work is properly cited and any changes properly indicated. They may not use the material for commercial purposes.

By submitting a manuscript, the author accepts the application of the Creative Commons Attribution-NonCommercial 4.0 International License.