The Romance of Modern Geology: Describing in simple but exact language the making of the earth with some account of prehistoric animal lifeGrew, Edwin Sharpe
Science
The Romance of Modern Geology: Describing in simple but exact language the making of the earth with some account of prehistoric animal life
Grew, Edwin Sharpe
Geology; Paleontology
neighbourhood was greatly disturbed; and soon after the fall of the
cliffs of Scylla the sea rose to a height of twenty feet, and the
wave rolling over the coast-line drowned 1500 people.
Japan is perhaps as unstable an area as anywhere exists on the
earth, and the records of its earthquakes are more complete than in
any other country. The number of destructive earthquakes recorded
there in the last fifteen hundred years is 223. Since the beginning
of the seventeenth century the records are fairly perfect, and it
is found that since then a destructive earthquake has occurred
somewhere in the Japanese islands nearly every two and a half years.
For the lighter shocks systematic observation has become necessary,
and the Japanese, with that development of the scientific spirit
which is so remarkable an accompaniment of their progress during the
last generation, have organised an Earthquake Recording Service--a
Seismological Bureau--at which such conspicuous meteorologists as Mr.
John Milne and Dr. Knott have worked, and which has produced great
seismologists among the Japanese themselves. As many of our readers
are aware, the earth is hardly ever still; it trembles continually
like a boiling kettle, though not for the same reasons; and the
delicate instruments for measuring earthquakes, which are called
seismometers, show continual earth tremors or earth shivers. Since
1888 the earthquakes of all intensities recorded in Japan give a
yearly average of 1447 shocks, or a daily average of four. Until the
great earthquake of 1891, the greatest shocks within the memory of
living men were those of 1854-5.
The earthquake of October 28th, 1891, shook an area of 243,000
square miles, or more than three-fifths of the entire area of Japan,
though the greatest damage was done on the Mino-Owari Plain, a
broad expanse of country occupied by rice fields and surrounded by
mountains. Without the least warning the blow came, and in the first
shock 20,000 buildings fell, 7000 people were killed and 17,000 were
injured. Innumerable fissures great and small appeared all over the
plain, and the houses in the thickly packed villages fell like packs
of cards. The plain is one of Japan's great gardens, and supported
almost 1000 people to the square mile. Villages were thereabout
continuous, and a narrow lane of unusual destruction could be traced
through them for twenty miles. After the first shock there were
numerous smaller ones, and during the next five months no fewer than
256 shocks were recorded in all. Among the more remarkable effects
of the earthquake was the actual shifting of the country. Along a
crack many miles in length the plain after the earthquake was some
feet lower on one side than on the other. Reservoirs and swamps were
formed, as well as sand pits and mud craters. The most conspicuous
effect, however, from a geological standpoint was the shifting and
distortion of the strata.
[Illustration:
_Photo, G. C. Niven_
Public-domain text, read in full here on John Shaqi.
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