| JaLCDOI | 10.18926/interdisciplinary/66896 |
|---|---|
| タイトル（別表記） | Advanced Hospital Training Activities in Fiscal 2023 |
| フルテキストURL | interdisciplinary_4_31.pdf |
| 著者 | 森田 瑞樹| 森 友明| 相田 敏明| 渡邉 豊彦| 藤井 大児| 原田 奈穂子| 袴田 玲| 吉葉 恭行| |
| 出版物タイトル | 統合科学 |
| 発行日 | 2024-03-31 |
| 巻 | 4巻 |
| 開始ページ | 31 |
| 終了ページ | 39 |
| ISSN | 2436-3227 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| JaLCDOI | 10.18926/interdisciplinary/66897 |
|---|---|
| タイトル（別表記） | Practical BIZEN Device Design Course Activity Report in Fiscal 2023 |
| フルテキストURL | interdisciplinary_4_41.pdf |
| 著者 | 伊永 俊雄| 内田 大輔| 岸本 俊夫| 仙石 喜也| 岡 久雄| 都築 常明| 吉葉 恭行| 櫻井 淳| |
| 出版物タイトル | 統合科学 |
| 発行日 | 2024-03-31 |
| 巻 | 4巻 |
| 開始ページ | 41 |
| 終了ページ | 49 |
| ISSN | 2436-3227 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| JaLCDOI | 10.18926/ESR/66846 |
|---|---|
| フルテキストURL | esr_030_021_035.pdf |
| 著者 | MAURER, Robert| HARKER, Stuart| SUZUKI, Shigeyuki| WHEELER, Allan| |
| 抄録 | Mantle convection currents are the currently accepted driving force for plate tectonics that have ripped apart the continents and created oceans. Because of these actions, continental collisions and ocean closures have resulted. Our paper challenges the conventional concept and provides an alternate, mathematically justified drive mechanism. The pull-push motions of such convection currents in the upper mantle are here concluded to be too weak to be the driving mechanism. Our proposal for such global scale forces concerns the effect of an offset centre of mass of the Earth that results in rotational wobbling. Kepler’s laws of planetary motion demonstrate the rotational behavior of the Earth to be aligned with the Sun on the outward and inward motions of the elliptical orbit. The unbalanced rotation on a fixed gravitational axis results in circumferential stresses on the outer Earth’s rim that is more than strong enough to pull the continental plates apart. The proposed unbalanced rotational stress force equation is shown to be sufficient to drive the cyclic breakup and reassembly of the continental plates, as well as the generation of new oceanic crust and subduction zones. Mantle convection currents are here demonstrated to have a passive rather than active role in the plate movements. |
| キーワード | Differential circumferential tensile force Rotating Earth Offset centre of mass radius of eccentricity |
| 出版物タイトル | Okayama University Earth Science Report |
| 発行日 | 2024-03-31 |
| 巻 | 30巻 |
| 号 | 1号 |
| 開始ページ | 21 |
| 終了ページ | 35 |
| ISSN | 1340-7414 |
| 言語 | 英語 |
| 著作権者 | © 2024 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| 論文のバージョン | publisher |
| JaLCDOI | 10.18926/ESR/66845 |
|---|---|
| タイトル（別表記） | Microtremor exploration in Tsushima Campus, Okayama University |
| フルテキストURL | esr_030_013_020.pdf |
| 著者 | 山田 伸之| 竹中 博士| |
| 抄録 | In this report, microtremor array observations were conducted in the Tsushima Campus of Okayama University, and the subsurface velocity structure was estimated from the analysis of the records. The results indicate that a five-layer S-wave velocity structure from the surface to the seismic basement equivalent layer with thicknesses of 8, 24, 80 and 180 m and velocities of 150, 450, 1100, 1700 and 3200 m/s, respectively, is reasonable. This model explains to some extent the observed phase velocity and H/V spectral ratios. It is also consistent with the surface borehole results. Furthermore, the areal characteristics of the H/V spectral ratios were also presented, allowing us to estimate the trend of the ground structure in shallow areas. |
| キーワード | Okayama Microtremor array exploration S-wave velocity H/V spectral ratio |
| 出版物タイトル | Okayama University Earth Science Report |
| 発行日 | 2024-03-31 |
| 巻 | 30巻 |
| 号 | 1号 |
| 開始ページ | 13 |
| 終了ページ | 20 |
| ISSN | 1340-7414 |
| 言語 | 日本語 |
| 著作権者 | © 2024 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| 論文のバージョン | publisher |
| JaLCDOI | 10.18926/ESR/66844 |
|---|---|
| タイトル（別表記） | Petrological characteristics of the stone chamber of Tobiotsuka Kofun, Okayama Prefecture |
| フルテキストURL | esr_030_001_012.pdf |
| 著者 | 金子 峻大| 野坂 俊夫| 清家 章| |
| 抄録 | Tobiotsuka Kofun, a tumulus built on the Misu Hills in the Kofun period, has a horizontal stone chamber made of huge stone blocks with a width up to 2 meters or more. To specify the source of the stone blocks, we carried out the measurement of magnetic susceptibility, petrographic observation, and chemical analysis of minerals. The stones are amphibole-biotite granite with phenocrystic large grains of K-feldspar. The back-wall stone of the chamber has higher magnetic susceptibility than ceiling and side-wall stones, which probably results from a higher amount of magnetite formed by the alteration of biotite in the back-wall stone. Furthermore, the back-wall stone is different from ceiling stone in that it has lower XMg [Mg/(Mg + Fe) mole ratio], lower Al, Ti, and Na + K contents and higher Si contents of amphibole, higher XMg of biotite, and shows a tendency to have higher Na (albite component) contents at rims of plagioclase crystals and lower Ti contents of zircon. These characteristics of the back-wall stone are similar to those of granite exposed in the Koshinzan area about 2 km northeast of Tobiotsuka Kofun, whereas the ceiling and side-wall stones are similar to granite outcrops in the vicinity of Tobiotsuka Kofun, e.g., in the Midoriyama area. It is concluded that the quarry for the back-wall was located at a different place from that for the ceiling and side-wall stones. |
| キーワード | Tobiotsuka Kofun stone chamber granite |
| 出版物タイトル | Okayama University Earth Science Report |
| 発行日 | 2024-03-31 |
| 巻 | 30巻 |
| 号 | 1号 |
| 開始ページ | 1 |
| 終了ページ | 12 |
| ISSN | 1340-7414 |
| 言語 | 日本語 |
| 著作権者 | © 2024 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved |
| 論文のバージョン | publisher |
| 著者 | Itano, Arao| Arakawa, Satiyo| |
|---|---|
| 出版物タイトル | Berichte des Ohara Instituts für landwirtschaftliche Forschungen |
| 巻 | 4巻 |
| 号 | 1号 |
| 資料タイプ | 紀要論文 |
| 著者 | Itano, Arao| Arakawa, Satiyo| |
|---|---|
| 出版物タイトル | Berichte des Ohara Instituts für landwirtschaftliche Forschungen |
| 巻 | 4巻 |
| 号 | 1号 |
| 資料タイプ | 紀要論文 |
| 著者 | Takahashi, Ryuhei| |
|---|---|
| 出版物タイトル | Berichte des Ohara Instituts für landwirtschaftliche Forschungen |
| 巻 | 9巻 |
| 号 | 2号 |
| 資料タイプ | 紀要論文 |