Publications of the Earthquake Investigation Committee in Foreign Languages, Issues 17-19

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No. 15 includes, at end of vol.: "Publications of the Earthquake Investigation Committee in foreign languages, nos. 1-16" and "Translation of the 000000000 contents of the Shinsai yobō chōsakwai hōkoku (Reports of the Imperial Earthquake Investigation Committee) nos. 1-47", 15 p.
 

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Contents

Annexe No 2 Ordonnance Imperiale sur 1organization du Service
18
Hysteresis Curve
19
The draft of Representation to be presented to the Government proposed
20
Variation of the Modulus of Elasticity during One complete Cycle
21
Mean Value of the Modulus of Elasticity taken for One com plete Cycle
24
Diminution of the Modulus of Elasticity due to Increase of the Amplitude of Cycle
26
The Velocities of Propagation of Seismic Waves
27
Diminution of the Velocity due to Increase of Amplitude 29
29
Diminution of the Velocity due to TernperatureKise
30
Note on the Existence of Paths of Maximum Velocity and Seismic Shadow
31
A Hint to the Frequency of Aftershocks
32
Curves of Isofiequency of Aftershocks
38
Conclusions
40
Explanation of Plates
44
Eeport on the effect of the Earthquake of Oct 28th 1891 in Aichi
69
Seismic Triangulation in Tokyo 2nd Report With 8 pis By A Ima
81
Report on the great RikuU Earthquake By T Nakamura Damage
84
A Horizontal Tremor Recorder With Plates III aiid IV
85
the Relation between Earthquakes and Changes iii
109
Report ou the buildings in the Shonai District damaged by the Earthquake
117
On the Seismic Triangulation in Toky5 With 4 pis 8rd Report
121
Note on the Annual Variation of the Height of Sealevel
125
On the Magnetic Disturbances which accompanied the strong Rikuzen
127
On the Aftershocks of Earthquakes With 9 pis By F Omori 108189
140
Miscellaneous Earthquake Reports 145149
145
Geology of the well in the ground of the Tokyo Imperial University
147
Testing of the Strength of Timbers 1st report With 6 pis By
155
Models of Buildings for the Fracturing Experiments With 19 pis
164
A continuous record for 1000 years Ordinary earthquake 15 Earth
22
The Speech of Prof D Kikuchi in proposing the above representation 2482
24
Note on the Lunardaily Distribution of Earthquakes With
27
Origin Ordinary earthquakes 28 Frequency 29
29
Note on the Vibration of Railway Bridge Piers With 6 pis By F Omori 3955
39
Synodicmonthly Variation of Seismic Frequency in Japan
41
Part of the Diagram of Pulsatory Oscillation Storm of Nov 17th18tb
43
An Absolute Scale of Seismic Intensity By F Omori 4550
45
Records of Earthquakes in Hokkaido With 8 pis By F Omori 8746
47
Report on the great RikuU Earthquake With 8 pis By N Yamazaki
50
Report on the damage in Sendai and the vicinity caused by the severe earth
51
The Handasan landslips With 1 pi By K Jinbo 55
55
On the Landslips in Oi District Fukui Prefecture With 2 pis By
57
Relation between the Duration of the Preliminary Tremors and the Dis
60
On the Transit Velocity of the Earthquake Motion Originating
66
Note on Seismic Disturbances in the East Indies With 2 pis By
67
On the repairing of Chimneys damaged by earthquakes 69
69
Miscellaneous Earthquake Reports 71100
71
The Shonai Earthquake of Oct 22nd 1894 With 28 pis By F Omori 79106
79
Instruments necessary for accurate observations
81
Sheets illustrating the damage on the T5kaid5 Railway by the great
82
Report on the buildings in T5kyo damaged by the severe earthquake of Juue
90
A Tide Rectifier or an Instrument for eliminating the Tidal Com
117
Published Feb 18th 1900
ii
Report on the buildings in the ShSnai District damaged by the Earthquake
vi
Condensed Statement on Construction of Earthquakeproof Wooden Buildings
xi
No 32 Published Sept 18th 1900
xiii
Published June 27th 1897
xv

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Page 77 - Koto: On the Cause of the Great Earthquake in Central Japan, 1891.
Page 84 - ... work was transferred to the Geodetic Commission, at the same time that it was decided to establish the Observatory of the International Geodetic Association at Mizusawa. The result of the examination of the mean monthly values of the latitude of Tokyo (Astronomical Observatory) for nearly 8i years between Aug. 1895 and Dec. 1903, with reference to earthquakes in Japan, shows that all the destructive earthquakes occurred exactly or very nearly when the latitude was at a maximum or a minimum. The...
Page 5 - In the first place to investigate whether there are any means of predicting earthquakes; and in the second place to investigate what can be done to reduce the disastrous effects of earthquake shocks to a minimum, by the choice of proper structures, materials, position, etc.
Page 63 - I shall speak presently, and communicate a sort of stress to the superincumbent surface layer of the earth' s crust in the region about the observing station : the latter being, in consequence, thrown into its own proper vibrations. In fact, the preliminary tremors seem to be nothing else than the pulsatory oscillations, caused by the waves transmitted along a deep layer of the earth's crust from the origin of...
Page 6 - As the recent seismological investigations in Japan are almost wholly the work of this Committee in conjunction with the Seismological Institute of the Tokyo University, what I am going to say will practically be an account of that work and its results. The work may for convenience be classified as follows: — 1) Statistical: consisting chiefly of collecting of records and reports of earthquakes and "tsunamis"2', descriptions of the effects of the shocks, <fec.
Page 6 - From these observations, are deduced the nature of the vibrations of earth particles, their amplitude and period, the velocity of earthquake waves, and so on. The observations of distant earthquakes also come under this head. 3) Geological: including reports of volcanic eruptions, dislocations, etc.
Page 105 - A and a was fairly satisfactory. Thus in a group of the experiments, the mean values of A and were respectively 8610 and 8670 mm. per sec. per sec. 115. For given values of height and external dimensions, a hollow column has a greater seismic stability than the corresponding solid one; the sides or walls in the former column being sufficiently thick and rigid for it to be regarded as a single structure. In the case of columns with very thin walls, a slight irregularity in the joint may cause them...
Page 23 - Tokaido were often disturbed by great non-local shocks, of which the origins were generally situated off the eastern coast of Japan, and which were probably caused by faults formed parallel to the latter. The three north-eastern provinces of Rikuzen, Rikuchu and Nemuro were often disturbed by great earthquakes of sub-oceanic origin.
Page 62 - It will be observed that the two periods of about 4^ and 8 sec. occur most frequently in the preliminary tremors; this being also the case with the observations made at Hongo. The different periods of vibrations in the 1st and the 2nd preliminary tremors do not depend on their duration, that is to say, on the distance of the earthquake origin from the observing station. A similar conclusion probably holds good also for the periods in other stages of the earthquake motion. 74...
Page 21 - Gifu in ordinary years, which was about 18-3. Thus the calculated earthquake numbers come out finally to be 84-3 and 75-3 respectively, or together 160. Actually there were 101 and 62 earthquakes respectively in 1898 and 1899, or 163 during the two years; these numbers agreeing with the calculated results as closely as may be expected.0 Similar calculations have been made, with equally satisfactory results, for the after-shocks of the Hokkaido earthquake of March 22, 1894, S) and those of the great...

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