M. Ikeya et al., REPRODUCTION OF MIMOSA AND CLOCK ANOMALIES BEFORE EARTHQUAKES ARE THEY ALICE IN THE WONDERLAND SYNDROME, Proceedings of the Japan Academy. Series B Physical and biological sciences, 74(4), 1998, pp. 60-64
Some earthquake precursor phenomena told as legends or reported retros
pectively for the 1995 Kobe earthquake have been reproduced by laborat
ory experiments. Mimosa placed on the high voltage sphere of a Van de
Graaff electrostatic generator closed its leaves and bowed on charging
and air-gap discharging, presumably due to the current induced in its
stem. Air-gap discharging caused sudden movements of eels in a nearby
plastic aquarium. Eels moved also on applying a pulsed electric field
of less than 0.5 V/m, while catfish responded only at around 5 V/m. T
he higher sensitivity of eels to electric field than that of catfish i
s consistent with the story in the Ansei Chronicle that a man could no
t find eels in a river but only catfish in violent movement before the
earthquake. Eels might have already hidden themselves in panic. Rapid
rotation and stopping of the second hand of a clock, which were obser
ved before the Kobe Earthquake like in the ''Alice in the Wonderland''
, have also been reproduced by exposing clocks to electromagnetic wave
s generated by air-gap discharging. Reported malfunctioning of home el
ectronic appliances before the earthquake would have been due to some
natural electromagnetic disturbance at the epicenter.