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| 題 名 | Thorium Isotopes as Tracers of Chemical Scavenging and Particle Dynamics in the Ocean: Review and Perspective=以釷同位素作示蹤劑在化學清除及顆粒動力學上之運用:回顧與前瞻 |
|---|---|
| 作 者 | 扈治安; 魏慶琳; | 書刊名 | 臺灣海洋學刊 |
| 卷 期 | 34:2 1995.05[民84.05] |
| 頁 次 | 頁17-30 |
| 分類號 | 351.93 |
| 關鍵詞 | 釷同位素; 化學清除; 膠體; Thorium isotopes; Chemical scavenging; Colloids; |
| 語 文 | 英文(English) |
| 中文摘要 | 過去的十五年中,藉研究釷同位素在海水中的分佈,吾人對海水中微量元素之化 學清除及顆粒動力學已有某些程度的瞭解。這方面的學者在研究過程中所使用的模式不斷提 升,從不可逆演化成可逆;而所涉及之顆粒體,從單一相擴增為三相。模式的發展使得數據 之獲得一直落於其後。近年來之研究發現,膠體在有關海洋生化過程中所佔的角色極為重要 。如果忽略膠體的存在,則模式分析的結果可能有誤導作用,或與已知理論不合。故新一代 的模式勢必要將膠體包涵在內,特別加以闡釋。這種進展使得實際技術與理論認知之間差距 漸行漸遠。如何在採樣及分析工作上迎頭趕上,是吾人目前所面臨的嚴峻考驗。 |
| 英文摘要 | In the past one decade and a half, studies of the distributions of Thisotopes have contributed significantly toward our understanding of particle dynamics and trace metal scavenging processes in the oceans. The scavenging models evolved from irreversible to reversible, and from those considering only one general population of particles to those considering three classes of particles. While the acquisition of data is always trailing behind the development of models, it has been increasingly recognized in the past several years that colloids play a major role in ocean biogeochemistry. Without considering the role of colloids the modeling results may be misleading or even at odds with theory. The inclusion of colloids in future studies seems inevitable; however, this will advance this field to such a sophistricated level that it becomes more difficult than ever for sampling and analytical techniques to keep pace with modeling requirements. How to narrow the gap remains a challenge to us. |
本系統中英文摘要資訊取自各篇刊載內容。