Earth-printshttps://www.earth-prints.orgThe DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material.Sat, 17 Apr 2021 08:54:05 GMT2021-04-17T08:54:05Z5031Seismic hazard assessment for Adriahttp://hdl.handle.net/2122/1354Title: Seismic hazard assessment for Adria
Authors: Slejko, D.; Camassi, R.; Cecic, I.; Herak, D.; Herak, M.; Kociu, S.; Kouskouna, V.; Lapajne, J.; Makropoulos, K.; Meletti, C.; Muco, B.; Papaioannou, C.; Peruzza, L.; Rebez, R.; Scandone, P.; Sulstarova, E.; Voulgaris, N.; Zivcic, M.; Zupancic, P.
Abstract: The Adriatic region was chosen as one of the test areas in the GSHAP program and, consequently, its seismic hazard was computed. The standard hazard map chosen by GSHAP represents PGA with a 475-year return period. Some other parameters, as the spectral acceleration and the uniform hazard response spectra for the main Adriatic towns, have been computed for a better representation of the regional hazard. The most hazardous area remains identified in the Cephalonia zone, where strong earthquakes frequently occur. The Southern Apennines are characterised by a slightly lower hazard, while the Adriatic Sea itself, the Poplain and the Apulian peninsula are almost aseismic.
Wed, 01 Dec 1999 00:00:00 GMThttp://hdl.handle.net/2122/13541999-12-01T00:00:00ZThe reliability of reported depths of some earthquake sequences in Northwestern Greece (Epirus and Corfu Island) and the geodynamic situation of the areahttp://hdl.handle.net/2122/1647Title: The reliability of reported depths of some earthquake sequences in Northwestern Greece (Epirus and Corfu Island) and the geodynamic situation of the area
Authors: Muço, B.
Abstract: The study of the earthquakes of the rectangle with coordinates 39°-40°N 19°-21°E is very important for a better understanding of the geodynamics of this area. In and near this zone, the subduction of the Aegean arc stops, and northward, going to the Albanian coast, the confrontation between the Adria microplate and the Albanian orogen is probably of collisional type. In this approach based on records of Greek seismological stations situated in this area as well as southern stations of the Albanian Seismological Network (ASN), the depth of the earthquakes of some sequences that occurred recently in this zone is carefully investigated. Some records of Southern Albanian seismological stations resulting from earthquakes with the same epicentral zone but reported with different depth are compared. The importance of detailed studies of this zone is stressed to shed light on the geodynamics of a key segment of the northwestern end of the Aegean arc.
Sun, 01 Dec 1996 00:00:00 GMThttp://hdl.handle.net/2122/16471996-12-01T00:00:00ZForeshock activity and its probabilistic relation to earthquake occurrence in Albania and the surrounding areahttp://hdl.handle.net/2122/1419Title: Foreshock activity and its probabilistic relation to earthquake occurrence in Albania and the surrounding area
Authors: Peçi, V.; Maeda, K.; Matsumura, K.; Irikura, K.
Abstract: We investigate some characteristics of foreshock activity of moderate and large earthquakes which occurred in the present century in Albania and the surrounding area. Using a prediction algorithm, based on possible foreshocks, we obtained a probabilistic relation between possible foreshocks and mainshocks. From documentary and instrumental data for the period 1901-1994 for the area between 39.0°- 43.0°N and 18.5°-21.5°E we evaluated the probability of the occurrence of mainshocks immediately after their possible foreshocks. The result shows that the probability that mainshocks with magnitude M ³ 6.0 are preceded by a foreshock with magnitude M ³ 4.4, distance £ about 50 km and time £ 10 days is 38% (6/16). The probability that one earthquake with M ³ 4.4 will be followed by a larger earthquake with M ³ 6.0 within about 50 km and 10 days is 1.3% (6/468), but the probability increases to 33% (1/3) if 7 earthquakes with M ³ 4.4 occur within about 50 km and 10 days. From instrumental data for the period 1971-1994, the probability that mainshocks with M ³ 5.0 are preceded by a foreshock with magnitude M ³ 4.0 is 33% (5/15). The probability that one earthquake with M ³ 4.0 will be followed by a larger earthquake with M ³ 5.0 within about 50 km and 10 days is 1.9% (5/262), but the probability increase to 5.6% (1/18) if 3 earthquakes with M ³ 4.0 occur within about 50 km and 10 days. We also found a regional variation of foreshock activity with activity decreasing from the Vlora-Elbasani-Dibra transversal seismic belt to the Ionian-Adriatic seismic zone to the interior part of Albania seismic zone.
Fri, 01 Oct 1999 00:00:00 GMThttp://hdl.handle.net/2122/14191999-10-01T00:00:00Z