| JaLCDOI | 10.18926/fest/11568 |
|---|---|
| フルテキストURL | 003_097_104.pdf |
| 著者 | Hassan Muhammad Qumrul| 大久保 賢治| |
| 抄録 | Surface air temperature distribution over the Ganges Delta Region of southwest Bangladesh and its tendency of warming are discussed through the analyses based upon the long-term temperature data from 1900-93. The data consist of two parts corresponding to the time-periods: 1973-93 and 1900-72. The study area is one of most affected places by the annual monsoon hydrological cycle and the present observation from these temperature data indicate that the surface air temperature gradient in the north-south direction is significant in the rainy season and that the temperature of the region is at an increasing tendency; the warming rate during the data periods (1900-93) on the long-term mean annual basis is estimated as 0.77℃ at Satkhira of the Khulna division and 0.29℃ as an areal average including the Barisal division, for the time difference of about half a century between the data periods before and after 1972. |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1998-01-14 |
| 巻 | 3巻 |
| 号 | 1号 |
| 開始ページ | 97 |
| 終了ページ | 104 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313675 |
| JaLCDOI | 10.18926/fest/11615 |
|---|---|
| フルテキストURL | 001_077_089.pdf |
| 著者 | 大久保 賢治| 森川 浩| 紀本 岳志| 田中 祐志| |
| 抄録 | Thermal 'staircase', a layer of constant temperature between the sheets of the steep gradients, was formed in the seasonal thermocline, which was 2.5 m above the bottom at a point of 18 m deep on the boundary slope in Lake Biwa. Following a sediment resuspension event when a moderate onshore wind blew, bed materials should be suspended up to the thermocline, then settled down forming a staircase above the turbid intrusion. Comparing the observed downward hear flux with the settling flux of sediment, it was found that double-diffusive convection would play an important role on the formation of the whole structure consisting of the staircase and turbid intrusion along with chemical anomalies and dense population of phytoplankters, which were fed by nutrients supplied from the bottom sediment under a typical condition of drought. Laboratory experiments were conducted to demonstrate the thermal and sediment processes in the stratified lake. Resuspension process due to surface and internal waves was examined using a tank with a sloping bottom, while the settling process was investigated by using a deep, diffusive tank. Formative process and scales of the staircase and intrusion were discussed relating with the intensity of resuspension and the buoyancy fluxes. |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 1996-03 |
| 巻 | 1巻 |
| 号 | 1号 |
| 開始ページ | 77 |
| 終了ページ | 89 |
| ISSN | 1341-9099 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002313571 |
| 著者 | OKUBO, Kenji| HUTTULA, Timo| SUITO, Hiroshi| ROPPONEN, Janne| MANO, Akiko| NAKAZAWA, Takashi| |
|---|---|
| 発行日 | 2014-06 |
| 出版物タイトル | SYKE-OU Project Report |
| 資料タイプ | 研究報告書 |
| 著者 | WU, Ting Feng| OKUBO, Kenji| HUTTULA, Timo| ROPPONEN, Janne| |
|---|---|
| 発行日 | 2014-06 |
| 出版物タイトル | SYKE-OU Project Report |
| 資料タイプ | 研究報告書 |
| 著者 | OKUBO, Kenji| KOSKIAHO, Jari| VENTELÄ, Anne-Mari| HUTTULA, Timo| |
|---|---|
| 発行日 | 2014-06 |
| 出版物タイトル | SYKE-OU Project Report |
| 資料タイプ | 研究報告書 |
| 著者 | NISHIMURA, Shin-ichi| OKUBO, Kenji| MORITA, Hidenori| KOSKIAHO, Jari| TATTARI, Sirrka| |
|---|---|
| 発行日 | 2014-06 |
| 出版物タイトル | SYKE-OU Project Report |
| 資料タイプ | 研究報告書 |
| 著者 | MORIFUJI, Shinya| SUITO, Hiroshi| ROPPONEN, Janne| OKUBO, Kenji| |
|---|---|
| 発行日 | 2014-06 |
| 出版物タイトル | SYKE-OU Project Report |
| 資料タイプ | 研究報告書 |
| フルテキストURL | fulltext.pdf |
|---|---|
| 著者 | Le Tien, Huu| Okubo, Kenji| Ho Thi, Phuong| Saito, Mitsuyo| |
| 発行日 | 2020 |
| 出版物タイトル | Hydrological Research Letters |
| 巻 | 14巻 |
| 号 | 4号 |
| 出版者 | Japan Society of Hydrology and Water Resources |
| 開始ページ | 143 |
| 終了ページ | 149 |
| ISSN | 1882-3416 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| OAI-PMH Set | 岡山大学 |
| 著作権者 | © 2020 The Author(s) |
| 論文のバージョン | publisher |
| DOI | 10.3178/hrl.14.143 |
| Web of Science KeyUT | 000610197100004 |
| 関連URL | isVersionOf https://doi.org/10.3178/hrl.14.143 |