巻号一覧
5 巻 (1952)
- 4 号 p. 52-
- 3 号 p. 71-
- 2 号 p. 35-
- 1 号 p. 1-
前身誌
5 巻, 4 号
選択された号の論文の10件中1～10を表示しています
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佐野 浚一1952 年 5 巻 4 号 p. 52
発行日: 1953/03/30
公開日: 2010/03/11
ジャーナル フリーPDF形式でダウンロード (87K) -
宮村 攝三, 松本 英照1952 年 5 巻 4 号 p. 53-54
発行日: 1953/03/30
公開日: 2010/03/11
ジャーナル フリーPDF形式でダウンロード (186K) -
佐野 浚一1952 年 5 巻 4 号 p. 115-121
発行日: 1953/03/30
公開日: 2010/03/11
ジャーナル フリーVarious methods to eliminate the annual variation of monthly mean sea-levels are applied for the mareogram data observed at mareograph stations along the coast of BAY of ISE, and their advantages are discussed. It is also concluded that the annual variation in the heights of sea-levels is mainly due to the annual changes in the oceanographical or meteorological elements.抄録全体を表示PDF形式でダウンロード (682K) -
佐野 浚一1952 年 5 巻 4 号 p. 122-131
発行日: 1953/03/30
公開日: 2010/03/11
ジャーナル フリーThe fluctuations from the linear secular changes in the heights of yearly mean sea-levels at various mareograph stations along the coast of West Japan, are seen parallel with each other and the amplitudes of the fluctuations are larger in the western coast of Kyusyu. The fluctuations in the heights of yearly mean sea levels may thus be attributed to the variation in the velocity of oceanic currents or the changes in some physical properties of the sea water.抄録全体を表示PDF形式でダウンロード (320K) -
友田 好文, 安藝 敬一1952 年 5 巻 4 号 p. 132-135
発行日: 1953/03/30
公開日: 2010/03/11
ジャーナル フリーA magnetic recording seismometer was constructed. In stead of the usual density type recording device with some or other sorts of mechano-magnetic transducer we adopted the area type one. The displacement of the seismometer pendulum is recorded on a magnetic tape with a small magnet which is attached to the seismometer arm and moves along the surface of the tape in the direction perpendicular to its run. Fundamental experiments were carried out regarding the recording characteristics of this device and it was found that this method of recording can give us sufficient informations about earthquakes of not very small intensities.抄録全体を表示PDF形式でダウンロード (1870K) -
佐々 憲三, 飯田 汲事1952 年 5 巻 4 号 p. 136-140
発行日: 1953/03/30
公開日: 2010/03/11
ジャーナル フリーGravity measurements were taken at about 100 stations in Kyoto, Osaka, Hyogo, Nara and Wakayama Prefectures between two weeks from the end of 1951 to the beginning of 1952 with North American Gravimeter.
The purpose of the present measurements is as follows.
1. To know the geophysical meaning of the local ground subsidence by means of repeated gravity measurments.
2. To obtain the relations between the changes in gravity values with time and the seismic activity.
The results contributed to the ground subsidence under the consideration of Bouguer anomaly distributions in Osaka city. The maximum value of changes in gravity values during one year in Kansai districts has been found to be 0.5 milligals.抄録全体を表示PDF形式でダウンロード (394K) -
早川 正已, 小谷 良隆, 一戸 時雄1952 年 5 巻 4 号 p. 141-150
発行日: 1953/03/30
公開日: 2010/03/11
ジャーナル フリーAs results of arranging the gravity values inserted before by Sassa and Iida, a few facts were ascertained.
1 Bouguer anomalies in Osaka City are shown in Tab. I. and Fig. 1 (unit 1 mgal).
2 Changas in gravity in Kansai dietricts between Dec. 1950 and Jan. 1952 (unit 0.1 mgal) are shown in Fig. 2.抄録全体を表示PDF形式でダウンロード (1027K) -
小林 啓美1952 年 5 巻 4 号 p. 151-157
発行日: 1953/03/30
公開日: 2010/03/11
ジャーナル フリーAuthor prospected to research the buildnigs at Hidaka and Tokachi, in Southern Hokkaido, which suffered from the Earthquake of March 4. 1952. And study how buildnigs were distroied by it about the several constructions; reinforced concrete construction, wooden construction, and masonry construction.抄録全体を表示PDF形式でダウンロード (10983K) -
村内 必典1952 年 5 巻 4 号 p. 157-163
発行日: 1953/03/30
公開日: 2010/03/11
ジャーナル フリーA new volcanic isle near the Bayonnaise Rocks, 450km south of Tokyo was discovered by the crew of a Japanese fishing boat, the No. 11 Myojin Maru, on Sept. 17, 1952. The exact location of the new volcanic isle was given by the stuff of oceanography, Tokyo Fisheries University, at 31°56′. 8N. and 139°59′. 5E. and it belongs to Fuji volcanic belt. According to newspapers, the pyroxysmal eruption as well as lava effusion were observed and the radius of the newly-extruded lava isle was 100-150 meters. Also it was reported that since Sept. 21, intermittent severe explosions were observed. On Sept. 23, by the courtesy of Tokyo Fisheries University we could approach the isle and observed explosios five times in one day on board the Shin' yo Maru, a 230-ton training ship of the University. The newly-formed isle had already disappeared under the sea but we could find the position of the undersea crater because the sea water, there, was remarkably yellowish. On the following day, Sept. 24, the No. 5 Kaiyo Maru, a 211-ton oceanographical survey boat of the Maritime Safety Board was missing near the new undersea volcano and all 31 on the ship, including a crew of 22 and nine experts on geology and oceanography were believed to have met tragic end. It was reported afterwards by a survey ship of MSB that a volcanic isle, 300-400m width, was pushed up again and steamed white vapour. The newly-ejectd pumice is quartz-andesitic. The energy of one explosion, occurred on Sept. 23, was estimated to be about 1018 erg. by the writer.抄録全体を表示PDF形式でダウンロード (773K) -
鈴木 次郎1952 年 5 巻 4 号 p. 164-169
発行日: 1953/03/30
公開日: 2010/03/11
ジャーナル フリーThe resisting force by air damper is not exactly proportional to the velocity of the motion of seismometer, as already pointed out by Dr. T. Hagiwara. Hence the frequency response of the seismometer with air damper is different from that by the ordinary theory of seismometers. The author studied mathematically the motion of the seismometer in such a case, for both free and forced oscillations, and calculated the true frequency response curves. The numerical results of calculations for the seismometer of Ishimoto type (natural frequency; 50c/s, weight of mass; 15kg, sectional area of the damper; 50cm2) are shown in Figs. The difference between the true response curves in the present case and those by the ordinary theory are not always neglisible, especially when the damping coefficient is large.抄録全体を表示PDF形式でダウンロード (397K)
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