検索結果 203 件
| JaLCDOI | 10.18926/ESR/13847 |
|---|---|
| タイトル（別表記） | Geology of Holocene deposits in Mizushima Area, Okayama Prefecture, Japan |
| フルテキストURL | EAR_13_1_15.pdf |
| 著者 | 鈴木 茂之| |
| 抄録 | The study srea, Mizushima is occupied by polder and reclaimed land. The ground of this area is composed of the Holocene deposits below the surface. The deposits are mostly 10 to 20m in thickness and composed of 2 units, the B Unit and C&D Unit. The B Unit is composed of muddy sand with 2 to 3m in thickness. This unit is thought to be deposited in the mouth of paleoriver. The C&D Unit is composed of marine mud and sand with 10 to 15m in thickness. This unit is especially soft and will expand ground oscillations during an earthquake. |
| キーワード | Holocene deposits Mizushima Area Ground oscillation |
| 出版物タイトル | Okayama University Earth Science Report |
| 発行日 | 2006-03-31 |
| 巻 | 13巻 |
| 号 | 1号 |
| 開始ページ | 15 |
| 終了ページ | 18 |
| ISSN | 1340-7414 |
| 言語 | 日本語 |
| 著作権者 | 岡山大学地球科学研究報告編集委員会 |
| 論文のバージョン | publisher |
| NAID | 120002310562 |
| JaLCDOI | 10.18926/ESR/13844 |
|---|---|
| タイトル（別表記） | バングラディシュの更新世台地の地形と地質 |
| フルテキストURL | EAR_13_1_1.pdf |
| 著者 | Towhida Rashid| Md. hossain Monsur| 鈴木 茂之| |
| 抄録 | With regards to the origin and evolution of the Pleistocene tracts (Lalmai, Madhupur and Barind tracts) of Bangladesh, two trends of thoughts are common. Most of the authors believed that the Madhupur, Barind and Lalmai tracts represent tectonically uplifted surface. Some researchers have different opinion and they believed that the Lalmai hills and the Madhupur locality represent tectonically uplifted blocks but the whole Barind tract and the major portion of the Madhuput tracts are not tectonically uplifted, rather these are originated by erossional-depositional processes. In order to solve the problems associated with origin and evolution of Pleistocene tracts of Bangladesh, further study is needed. Borehole data may be collected and fusion images can be prepared from aerial photographs and setellite images to detect netectonic imprins and geomorphological signatures of the areas. Elaborate laboratory analysis of sediment deposits, radiocarbon dating my indicate a new dimension about the origin and evolution of these tracts. |
| キーワード | Bangladesh Lalmai Hill Barind Tract Madhupur Tract Neotectonices Aerial photographs Satellite Image Fusion Image |
| 出版物タイトル | Okayama University Earth Science Report |
| 発行日 | 2006-03-31 |
| 巻 | 13巻 |
| 号 | 1号 |
| 開始ページ | 1 |
| 終了ページ | 13 |
| ISSN | 1340-7414 |
| 言語 | 英語 |
| 著作権者 | 岡山大学地球科学研究報告編集委員会 |
| 論文のバージョン | publisher |
| NAID | 120002310445 |
| JaLCDOI | 10.18926/ESR/13828 |
|---|---|
| タイトル（別表記） | Storm surge in the Seto Inland Sea accompanied by Typhoons in 2004 |
| フルテキストURL | earth_science_reports_014_1_1.pdf |
| 著者 | 淺沼 友光| 塚本 修| 小川 貢司| |
| 抄録 | In 2004, Seto Inland Sea coast suffered severe damages of storm surge. This area never experienced storm surge damage in recent half century and people were not ready for the storm surge. In two typhoons of T0416 and T0418, surge anomaly were more than 150cm in Bisan-Seto area. Storm surges appeared after the maximum approach of typhoon not only due to surface low pressure but also due to wind stress as westerly. Because of geographical complexity of Seto Inland Sea, the surge process have not been well understood. Therefore, it is necessary to study the effects of the wind and the surface pressure using a numerical model. Atmospheric model MM5 and ocean model POM were used as a numerical experiment, including the astronomical tide model NAO. Aｓ the results of numerical simulation of the storm surge, atmospheric conditions were well simulated but ocean model was rather complex. There are a lot of island in Seto Inland Sea and sea water movement in the model was very much influenced by the topography and wind stress effect appeared much smaller. In the no-island model, storm surge height was a little improved. However the simulated surge height was still less than the observed height. Further improvement of the ocean model application should be considered in future studies. |
| キーワード | Typhoon Storm Surge Seto Inland Sea surface pressure wind stress |
| 出版物タイトル | Okayama University Earth Science Report |
| 発行日 | 2008-03-31 |
| 巻 | 14巻 |
| 号 | 1号 |
| 開始ページ | 1 |
| 終了ページ | 9 |
| ISSN | 1340-7414 |
| 言語 | 日本語 |
| 著作権者 | 岡山大学地球科学研究報告編集委員会 |
| 論文のバージョン | publisher |
| NAID | 120002310572 |