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沖積平野および浅海底の地形と粒度組成 その2 ―三河湾北西部浅海デルタの底質の粒度分析結果―
http://hdl.handle.net/10424/00007452
http://hdl.handle.net/10424/00007452261dda19-53b6-4c93-a742-660e9c876a3d
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
chiri4599106.pdf (2.7 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||
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| 公開日 | 2018-01-25 | |||||||
| タイトル | ||||||||
| タイトル | 沖積平野および浅海底の地形と粒度組成 その2 ―三河湾北西部浅海デルタの底質の粒度分析結果― | |||||||
| 言語 | ||||||||
| 言語 | jpn | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | journal article | |||||||
| その他のタイトル | ||||||||
| その他のタイトル | Grain Size Distributions of Recent Alluvial Plain Deposits and Shallow Marine Sediments, Part 2 ―deltaic shallow marine sediments in the north-western Mikawa Bay, Japan― | |||||||
| 著者 |
森山, 昭雄
× 森山, 昭雄
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| 著者(別言語) | ||||||||
| 著者(別言語) | Moriyama, Akio | |||||||
| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | To make clear the relationship between grain size distribution and geomorphology in deltaic shallow marine environments, the writer analyzed numerous bottom sediments by his method (Moriyama 1976). Geomorphology in the northwestern Mikawa Bay is shown in figure 1． Delta platform with about 1.5km width with extends along coast and it is occupied by tidal flat. Off the Yahagi River coast, steep fore-set slope extends south-eastward far off the fore-set slope. Statistical four moments of dredged samples (Tab. 1) and also correlation between mean and skewness (Fig. 3) indicate that most of delta platform deposits are coarser than 3.0 phi, most of bottom-set slope deposits are finer than 6.0 phi and strong minus correlation is between mean and skewness. From size frequency distridution curves in normal probability scale (Fig. 4, 5), the writer calculated mean and standard deviation of each sub-population in rifference to all samples (Fig. 6). Almost delta platform deposits are composed by two or three sub-populations and means of sand population agglomerate near 3.0 phi and 1.0 phi. Clay population have large standard deviation and their means are mostly 8-9 phi. Lack of sub-population in 4-7 phi is common to the all samples. Association of sub-populations of bottom-set-slope deposits is very complicated and their clay population shows high percentage in contrast to delta platform deposits. Lack in 5-6 phi can be seen as well as in the platform deposits. Above-mentioned facts indicate that there is a very striking contrast between coarse sands prevailing sand populations inside of fore-set slope and fine clay prevailing clay population beyond the fore-set slope. The writer considers it is occured by the following reasons; inside of the fore-set slope, the silt size grains are not produced so much, drained sediments with much sand populations from river mouths are deposited on shallow delta platform on which violent tidal current flows, and, beyond the fore-set slope, sediments containing much clay population spread out to deposit on the bottom-set slope further off the coast where week tidal current flows. | |||||||
| 書誌事項 |
地理学報告 巻 45, p. 99-106, 発行日 1976-05-31 |
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| 出版者 | ||||||||
| 出版者 | 愛知教育大学地理学会 | |||||||
| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0529-3642 | |||||||
| 書誌情報 | ||||||||
| 地理学報告. 1976, 45, p. 99-106. | ||||||||
| 書誌レコードID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AN00148086 | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| 著者別名 | ||||||||
| 著者別名 | モリヤマ, アキオ | |||||||
| 資源タイプ | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | text | |||||||
