巻号一覧
6 巻 (1953)
- 4 号 p. 163-
- 3 号 p. 117-
- 2 号 p. 69-
- 1 号 p. 1-
前身誌
6 巻, 4 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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慶松 光雄1953 年 6 巻 4 号 p. 163-175
発行日: 1954/03/25
公開日: 2010/03/11
ジャーナル フリーIt happened that they had two great earthquakes in the north eastern part of Shanhsi Province in this century, but no such great earthquakes had occurred in that district throughout the Ming and Ch'ing period, 1368-1911. The two maps most clearly indicate the features of these earthquakes. These two earthquakes resemble each other. They are near to each other in their epicentres, most heavily damaged areas, dates, with their whole disturbed areas covering nearly the same region. Their magnitudes presumed to be just the same, MK=5.8, M=7.7. The longest radius of the earthquake A is 618km, and that of B 534km, but if the earthquakee at Nant'ung, Chiangsu Province, is to be identified with A, the former radius amounts to as much as 1026km.
Concerning to both earthquakes, destruction of buildings or city walls, spurts of water, cracks of earth, the dead and injured of men and beasts were seen everywhere within the circle of VI isoseismal. The most heavily damaged area of A was Lingch'iûhsien, where all the constructions were completely destroyed, the death-roll over 5200. As to B the detailed states of Yüanp'ingchên are uncertain, but the damages there are said to have been the severest. The total of death-roll in various places is conjectured no less than several thousands.
The first shock of A is recorded to have occurred about 3 a. m. 28 June, 1626, and that of B between 11 a. m. to 5 p. m. 22 November, 1683. The data about the foreshock cannot be found, but concerning the aftershocks, those of A continued until over one month after, while those of B are recorded to have ranged the period from a few months at least to several years at most.抄録全体を表示PDF形式でダウンロード (1443K) -
吉村 壽一1953 年 6 巻 4 号 p. 176-182
発行日: 1954/03/25
公開日: 2010/03/11
ジャーナル フリー地震波の異常伝播の現象はモホロビチツチ層 (または表面層) の厚さの影響もあるが主な原因は地殼の歪にあると考之られる. 多くの地震について得られたP波走時の偏差量は独特の分布を示しており, かつ一定の方向に移動しでいる. 筆者はごれを位相流と名ずけた. 地震は位相流の動きの不連続になつている地点で起りその規模は地震の発生に関与したと考えられる正の偏差面積に大体比例している.抄録全体を表示PDF形式でダウンロード (637K) -
地殼物質密度の分布と均衡異常との関係加藤 元彦1953 年 6 巻 4 号 p. 183-191
発行日: 1954/03/25
公開日: 2010/03/11
ジャーナル フリーIn the preceding paper, the author assumed the density distribution of the subterranean structure was the eq. (4) and he deduced the coefficient Cm from the boundary conditions, these were the gravity and the density both observed on the earth surface.
By this method, he showed the actual structure was reasonably explained by the gravity anomaly.
Consulting the eqs. (2) and (6), he now assumes the distribution of excess mass on the surface ρem and their compensated subterranean mass ρem. They are the eqs. (8) and (9).
He takes this model for that of isostasy and calculates some quantities which are shown in Table 1, and Fig. 1.
When the surface topography are represented by the eq. (17) and the density on the surface is ρo, the isostatic anomaly is the eq. (28) in his model of isostasy.
These results are agreed with that of the Tsuboi's model which is identically independent from this model.
The relation between the isostatic anomaly and the coefficient of the rate of change of density λ is shown by the eq. (29).抄録全体を表示PDF形式でダウンロード (675K) -
三木 晴男1953 年 6 巻 4 号 p. 192-195
発行日: 1954/03/25
公開日: 2010/03/11
ジャーナル フリーVarious features on the temperature of the earth's interior were derived from the modern theory of solids. The main results are as follows: (1) Grüneisen's parameter in the R-layer (33-413km.) must be greater than 1.5. (2) Temperature in the D-layer (1000-2898km.) increases linearly with increasing depth and its gradient depends on the mean atomic weight rather than Grüneisen's parameter, for instance, 1.79°/km, for A=20 and 3.73°/km. for A=40. (3) Temperature gradient in the R-layer decreases with increasing depth.抄録全体を表示PDF形式でダウンロード (201K) -
島津 康男, 三木 晴男1953 年 6 巻 4 号 p. 196-218
発行日: 1954/03/25
公開日: 2010/03/11
ジャーナル フリーPDF形式でダウンロード (2838K) -
宮村 攝三, 辻浦 賢, 松本 英照1953 年 6 巻 4 号 p. 219-220
発行日: 1954/03/25
公開日: 2010/03/11
ジャーナル フリーPDF形式でダウンロード (2223K)
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