BOTTOM-CLINGING AND DISPERSION MECHANISM OF WAVE FIELD TO THE PLANKTONIC LAVAL CLAMS
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- SETO Masabumi
- 福井県立大学 生物資源学部海洋生物資源学科
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- KURIYAMA Yoshitake
- 田崎真珠株式会社
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- HASE Eichi
- サカイオーベックス株式会社
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- KOBAYASHI Yutaka
- 千葉県水産総合研究センター 東京湾漁業研究所
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- ARAKAWA Hisayuki
- 東京海洋大学 海洋科学部海洋環境学科
Bibliographic Information
- Other Title
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- 波浪場における二枚貝浮遊幼生の着底・分散機構に関する研究
Abstract
The swimming behavior of laval manila clam Ruditapes philippinarum and laval hen clam Pseudocardium sachalinense can be modeled by repeating the rise by a spiral movement and the swim stop generated intermittent settling. The planktonic larva of bottom-clinging stage increases the swimming speed and the diameter and the fall speed of a spiral movement with growth, and the rotation cycle of a spiral movement has decreased. If the particle diameter of the sediment is larger than the shell length, the planktonic larva is caught in the pore of the sediment when reaching bottom by the settling. If the particle size of the sediment is significant small compared with the diameter of a spiral movement, the planktonic larva caught in the sediment pore is gradually opened from the pore while repeating the surface of the sediment and the head-on collision. On the other hand, if the particle size of the sediment is almost equal to a spiral diameter, the planktonic larva keeps being caught in the sediment because a spiral movement becomes possible in the sediment pore. Larva's dispersion process after the bottom-clinging can be formulated by the advection dispersion equation, and can be evaluated by dispersion coefficient.
Journal
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- PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN
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PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN 23 453-458, 2007
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390282680182025856
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- NII Article ID
- 130003950649
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- ISSN
- 18848265
- 09127348
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed