M=6.3
Major destructions at Corinth, Loutraki
M=6.3
Major destructions at Corinth, Loutraki
Major damages south of Lafkada and north of Cephalonia and Ithake
Cephalonia M=7
Small damages in Cephalonia, but the aftershock of 23;51 (M=6.4) which was on land caused more damages
Sequence of earthquakes
Very large destructions in Cephalonia (83% of the houses destroyed entirely)
Tsunami observed. Bulding collapsed and fatalities at Zakynthos
Sequence of earthquakes lasting 21 months (until the mainshock) with:
Large damages at Zakynthos, 120 people killed, ref Barbiani & Barbiani, 1864, Albini et al., 1995, Chiotes 1886-87
Major damages at Francavilla Fontana and Nardo (Italy) and in Lefkada. Serious damages at Brindisi, Taranto, Bari, in the north of Cephalonia, Ioannina. Duration in Zakynthos = 2mn
Ref Perrey, 1848, Mallet, 1848, Aravantinos, 1856, Partsch, 1887, Machaeras, 1951, Montadon, 1953, Triantafyllou, 1959, Tsitseles, 1960
Destructions in Corfou, strongly felt up to Cephalonia
« The cape Saint Sostes was sunk and the earth was fissured in many places » ‘Papazachos & Papazachou, 1997).
References
Figure 1. Daily number of visitors. The peaks are in september (during the CRLSchools) and in june (during the coordination meetings of the NFO).
Figure 2. Monthly number of visitors.
Figure 3. Evolution of the monthly number of returning visitors. The returning visitors represent 16.9% of the total number of visitors. Not considering the peaks of June and September (see Fig. 1), there is a positive long term trend passing from ~30 returning visitors/month in early 2017 to ~60 returning visitors/month in late 2019. The present (november 2019) 60/month might be a reasonably good measurement of the current number of routine users of data and products distributed through the CRL web portal (see pages most visited in Fig. 5).
Figure 4. Country of the visitor. Greece is by far the top user of the CRL NFO web portal.
Figure 5. Pages most visites. The home page http://crlab.eu is the most visited with 26%. The three CRLSchools 2019, 2018 and 2017 gather in total 17.4%. The data/products pages most visited are those with 30s GNSS data, earthquakes catalogs, and interferograms.
Figure 6. Duration of the session. Apart the very short visits, the peak visit time is in the range 3-10mn.
Figure 7. Type of interface. The CRL portal is compatible with smartphones and tablets. This is useful in particular to navigate whith the GPS of the smartphone to the stations in the field (see for example here for navigation to the seismic stations). The connections with smartphones account currently for ~19%.
National and Kapodistrian University of Athens, June 19, 2019
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