巻号一覧
24 巻 (1971)
- 4 号 p. 279-
- 3 号 p. 189-
- 2 号 p. 79-
- 1 号 p. 1-
前身誌
24 巻, 1 号
選択された号の論文の11件中1～11を表示しています
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杉山 公造, 島津 康男1971 年 24 巻 1 号 p. 1-12
発行日: 1971/03/31
公開日: 2010/03/11
ジャーナル フリーAs a continuation of the recent paper by the present authors [SHIMAZU et al. (1970)], a Monte Carlo simulation of construction planning of buildings is developed by generating a time series of earthquake occurrence.
(1) Economic merit of forecast of earthquakes.
When the destructive force larger than the critical level Ic is predicted, the accuracy of forecast is defined by the following two types of probabilities: P1 (forecast of occurrence is true) and P2 (forecast of non-occurrence is true). It is shown that the economic merit is more sensitively dependent upon Ic than P1 and P2.
(2) Common characteristics of optimum initial strength of buildings for earthquake and meteorological disasters.
It is concluded that the former is not economically profitable in any case than the latter.
(3) Risk (damage plus cost) per year.
The result of calculation is shown in Fig. 9 for seven points in Japanese Islands.
(4) Strategy of reconstruction planning of hypothetical area is considered under various constraints of budget, initial strength and selection of order of reconstructing areas.抄録全体を表示PDF形式でダウンロード (1007K) -
第一部 一つの機械的モデル大塚 道男1971 年 24 巻 1 号 p. 13-25
発行日: 1971/03/31
公開日: 2010/03/11
ジャーナル フリーA mechanical model is proposed which has proved itself quite successful in simulating various characteristic natures of the earthquake occurrence. The structure is demonstrated with some examples of its output.
Further analysis of its operation is expected to yield important suggestions toward understanding the physical processes on which problems of earthquake occurrence are based.抄録全体を表示PDF形式でダウンロード (1201K) -
野越 三雄, 五十嵐 享1971 年 24 巻 1 号 p. 26-40
発行日: 1971/03/31
公開日: 2010/03/11
ジャーナル フリーThe amplitude characteristics as the fundamental natures of microtremors are discussed at present paper. The experimental field is Hakodate City in Hokkaido.
The power spectral density functions of microtremors were compared with amplitude functions of Rayleigh wave (M11) computed from underground structure. Furthermore, theoretical ratio of the horizontal component to the vertical component of Rayleigh wave (M11) was compared with that of the observed microtremors. From these comparisons, it was shown that the amplitude characteristics of microtremor was mostly composed of Rayleigh wave (M11).抄録全体を表示PDF形式でダウンロード (1037K) -
服部 定育, 飯田 汲事1971 年 24 巻 1 号 p. 41-53
発行日: 1971/03/31
公開日: 2010/03/11
ジャーナル フリーThe displacement and energy of seimic body waves at the free surface of the ground due to plane P, SV and SH waves incident at the bottom of the crust are calculated by Haskell's method for a four-layered crustal model in the western Japan. For same crustal model, the particle motions due to the incident P and SV waves are also discussed on the basis of displacements and phase differences.
Charts of Fh and Fv in equation (5) for determining the polarization angle of S waves are given for three cases of crustal model: two-layered model in the western, central and eastern Japan. These are usefull for the investigation of focal mechanism by the use of S wave data at short epicentral distances.抄録全体を表示PDF形式でダウンロード (864K) -
服部 定育, 飯田 汲事, 宮島 力雄1971 年 24 巻 1 号 p. 54-66
発行日: 1971/03/31
公開日: 2010/03/11
ジャーナル フリーSeismicity of Inuyama area were investigated during the period from April 1968 to March 1969. Total number of observed earthquakes were 9000. Among these shocks there were about 1100 shocks with the P-S time interval TP-S less than 4.0sec and about 850 shocks with 4.0sec≤TP-S≤10.0sec. There were maximum peaks in the frequency distribution of shocks at the P-S time intervals such as 0-4.0sec, 4.0-10.0sec and 17.0-21.0sec.
The relation between earthquake magnitude and P-F time at Inuyama station (INU) was obtained as
M=4.06·log (P-F)-5.15.
When released energy of earthquakes is very large during a certain short period, it is very small in the following certain period, but the increasing rate of released energy in a certain magnitude range is nearly constant for a long period and the larger the magnitude, the longer the period becomes.
Ishimoto-Iida's coefficient m seems to change more or less with time.
Two small earthquakes accompanied by aftershocks were observed in May and November 1968. Each magnitude of these main shocks was about 3.0 and in about ten hours after the first main shock, secondary main shock was observed. Some characteristics of these shocks were also discussed.抄録全体を表示PDF形式でダウンロード (867K) -
タムラジャン G. P.1971 年 24 巻 1 号 p. 67-68
発行日: 1971/03/31
公開日: 2010/03/11
ジャーナル フリーPDF形式でダウンロード (195K) -
笠原 順三, 是沢 定之, 南雲 昭三郎1971 年 24 巻 1 号 p. 69-70
発行日: 1971/03/31
公開日: 2010/03/11
ジャーナル フリーPDF形式でダウンロード (217K) -
吉井 敏尅1971 年 24 巻 1 号 p. 70-71
発行日: 1971/03/31
公開日: 2010/03/11
ジャーナル フリーPDF形式でダウンロード (217K) -
山田 功夫1971 年 24 巻 1 号 p. 72-73
発行日: 1971/03/31
公開日: 2010/03/11
ジャーナル フリーPDF形式でダウンロード (202K) -
本谷 義信1971 年 24 巻 1 号 p. 74-76
発行日: 1971/03/31
公開日: 2010/03/11
ジャーナル フリーPDF形式でダウンロード (289K) -
1971 年 24 巻 1 号 p. e1
発行日: 1971年
公開日: 2010/03/11
ジャーナル フリーPDF形式でダウンロード (31K)
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