巻号一覧
17 巻 (1964)
- 4 号 p. 179-
- 3 号 p. 131-
- 2 号 p. 59-
- 1 号 p. 1-
前身誌
17 巻, 3 号
選択された号の論文の6件中1～6を表示しています
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宮本 貞夫1964 年 17 巻 3 号 p. 131-138
発行日: 1964/09/25
公開日: 2010/03/11
ジャーナル フリーThe first report explains the relation between abnormal phenomena of the special astatic magnetometer and earthquakes.
Table 1 in this paper indicates the earthquakes of Fig. 7 and 8 of the first paper.
Table 2 in this paper explains abnormal phenomena by this magnetometer from Sep. 1 in 1959 to Jan. 31 in 1961.
Therefore, please compare Table 1 and 2 with Fig. 7 and 8 in the first report.抄録全体を表示PDF形式でダウンロード (504K) -
神沼 克伊, 平沢 朋郎1964 年 17 巻 3 号 p. 139-147
発行日: 1964/09/25
公開日: 2010/03/11
ジャーナル フリーThe records of Mantle Love waves of the Iranian earthquake of September 1, 1962 (19h 20m 38.5s G. M. T., 35.6 N 50.0 E M: 7 3/4) are analyzed for the purpose of obtaining the phase velocity and specific dissipation factor.
The local phase velocity in a part of central Japan for the periods 70 to 110sec is derived from seismograms (G1, G2) of Tsukuba, Hongo and Matsushiro. The results confirm the former ones obtained by Aki and Kaminuma (1963) from the Aleutian shock of March 9, 1957.
From records of G1 and G3 at Tsukuba, a phase velocity curve for the great circle path through Tsukuba is obtained. Making use of the phase velocity the specific dissipation factors (Q) for mantle Love wave are calculated for the periods 50 to 150sec. There is a minimum value of Q about at the period 90sec.抄録全体を表示PDF形式でダウンロード (614K) -
島津 康男, 河野 芳輝1964 年 17 巻 3 号 p. 148-157
発行日: 1964/09/25
公開日: 2010/03/11
ジャーナル フリーUnsteady mantle convection is studied as a continuation of the previous paper (Part 1). Thermal interactions between the crust and the upper mantle are our main interests.
Numerical calculations are performed until a reversal of the initial temperature distribution is realized. Variations in isotherm, speed, stress and heat flow through the Moho are obtained. The speed increases exponentially and reaches the order of 1cm/year. The stage of the maximum stress comes 3-4×107 years earlier than the stage of the maximum heat flow. The former stage may correspond to epiorogenic submarine volcanism (formation of fractures) while the latter to plutonic activity (formation of granitic batholiths).
Considering the time scale of actual tectogenesis (-108 years) and the reasonable range of convection speed (<102cm/year), the mean viscosity of the upper mantle is estimated as 1021-1022 poises. After the convection is grown sufficiently (>10-3cm/year) the thermal state of the crust has no effect on its subsequent development.抄録全体を表示PDF形式でダウンロード (813K) -
勝又 護1964 年 17 巻 3 号 p. 158-165
発行日: 1964/09/25
公開日: 2010/03/11
ジャーナル フリーIn this paper, a method to determine the magnitude of deep-focus earthquakes in and near Japan from the observation data of Japan Meteorological Agency is proposed.
The relation between the maximum amplitude of earthquake motion (mainly S waves) at a certain epicentral distance and the depth of the earthquake origins is approximately expressed by log10A=C-ΣCn(H/R)n where A is the amplitude, R is the radius of the earth, H is the depth of the origin, C=M-C0 (M means the magnitude), and each Cn is a certain constant.
From the above equation, the magnitude is determined by M=log10A+K where K=C0+ΣCn(H/R)n.
For the sake of convenience, the Ks for several distances and depths are given in a table.抄録全体を表示PDF形式でダウンロード (570K) -
飯田 汲事, 熊沢 峰夫, 鈴木 一悠1964 年 17 巻 3 号 p. 166-167
発行日: 1964/09/25
公開日: 2010/03/11
ジャーナル フリーPDF形式でダウンロード (214K) -
佐藤 泰夫, 宇佐美 竜夫1964 年 17 巻 3 号 p. 167-169
発行日: 1964/09/25
公開日: 2010/03/11
ジャーナル フリーPDF形式でダウンロード (204K)
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