1962年4月30日宮城県北部地震調査報告 : 1900年5月12日陸前北部地震との比較
スポンサーリンク
概要
- 論文の詳細を見る
The Northern Miyagi Earthquake on April 30th, 1962 shook almost the same area as the Northern Rikuzen Earthquake on May 12th, 1900 with almost equal intensity The writer compared both earthquakes with one anothor and reached the following conclusions. Magnitude: The magnitude of the 1900 earthquake was larger than that of the later one by about two thirds, deduced by means of Kawasumi's method from the area of the isoseismals. The magnitudes Mk and M in the later one were deduced as 3.6 and 6.6, respectively (Fig. 2). Epicentre: The epicentre of the present one was determined in the neighbourhood of 38°45'N and 141°08'E, from the analysis of the record of the strong motion seismometer at Ishinomaki Weather Station. Therefore, that of the later one was about 20 km distance north from that of the previous one (Fig. 3). It was also ascertained that earthquakes seldom.occur in the northern part of Sendai Plain, although someone doubted its exsitence in that area. Number of after-shocks felt: Twenty-four after shocks were felt up to May 31st in the case of the former earthquake at Ishinomaki, while thirteen up to May 19th in the present earthquake. It was considered that this difference was caused by the dissimilar magnitute and epicentral distance from one another. Many abnormal after-shock were felt at the Hosokura Mine (Table III), compared with those felt at Ishinimaki (Table II) and Tsukidate (Table IV). Characteristics of the earthquake motion: The gravestones at Sekiun Shrine, Matsuyama Town, were studied. There were some gravestones which were rotated counterclockwise in the past earthquake, while such rotations of the gravestones could not be discerned in the case of the present one. It was inferred that this difference resulted from that of the epicentral distance and the magnitude.
- 1962-11-30
論文 | ランダム
- 11) 経皮的冠動脈形成術における治療戦略に経胸壁3D心エコーが有用であった右冠動脈起始部異常症の1例(日本循環器学会第130回東海・第115回北陸合同地方会)
- 10) 左主幹部狭窄及び造影剤によりショックに陥るも,右大腿からのPCPS,左上腕からのIABPにより救命できた一例(日本循環器学会第130回東海・第115回北陸合同地方会)
- 2) 急性心筋梗塞後の左室機能とmatrix metalloproteinase関連蛋白(日本循環器学会第130回東海・第115回北陸合同地方会)
- 28)左室拡張能と動脈硬化との関連について(第129回日本循環器学会東海地方会)
- 160)甲状腺機能亢進症に伴う2次性心筋症が疑われた心不全の1例(日本循環器学会第128回東海・第113回北陸合同地方会)