Gn. Stavrakakis et J. Drakopoulos, THE VAN METHOD - CONTRADICTORY AND MISLEADING RESULTS SINCE 1981, Geophysical research letters, 23(11), 1996, pp. 1347-1350
We reexamine the VAN-telegrams available to us, in terms of the seismo
logical data observed in the candidate region before and after the rel
evant telegram. For the time period 1981 - 1985, the correlations are
random. Earthquakes of any magnitude, from an extremely low threshold
(i.e., M = 2.5) at very short distances (i.e., a few kilometers), to l
arge magnitudes (i.e., M = 7.0) at very large distances (i.e., 500 km)
, or even teleseismic events (i.e., the Iran earthquake of 1981, at a
distance of about 2000 km) were correlated by VAN with ''apparent'' SE
S, on the basis of the occurrence of an earthquake, anywhere, (from It
aly to Aegean Sea, and from Albania to Crete island) and usually based
on telegrams exchanged between the VAN-researchers. From 1986 onwards
. the VAN-telegrams were restricted mostly to the area of Western Gree
ce, which has the highest seismicity in Europe. By analyzing all of th
e VAN-telegrams available to us, we conclude that in no case was a mai
nshock predicted. Whenever the reported VAN-correlation seems to be sa
tisfactory, the correlated event was either an aftershock or the corre
lation was not unique, meaning that any of several earthquakes in the
same focal region could be arbitrarily correlated with the telegram.