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Source, processes and productivity from distribution of surface sediments, Prydz Bay, East Antarctica
https://nipr.repo.nii.ac.jp/records/15462
https://nipr.repo.nii.ac.jp/records/15462812c52d3-be61-405c-b5d9-03c4b61eb1a9
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2019-04-03 | |||||
タイトル | ||||||
タイトル | Source, processes and productivity from distribution of surface sediments, Prydz Bay, East Antarctica | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Source, processes and productivity from distribution of surface sediments, Prydz Bay, East Antarctica | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Surface sediments | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Source | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Processes | |||||
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 | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Choudhary, Shabnam
× Choudhary, Shabnam× Nayak, G.N.× Tiwari, Anoop Kumar× Khare, N. |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Source of sediments and depositional processes of surface sediments along the Prydz Bay were investigated through grain size, organic carbon, nitrogen, phosphorus, calcium carbonate and metal concentration. High content of sand and higher values of Al2O3 and TiO2 at shallow water depth indicate their terrigenous source and relatively higher hydrodynamic conditions near the coast. Al2O3/TiO2 ratio ranging from 3.77- 12.73 suggests a mafic source for the sediments. C/N ratio ranging from 5.76 to 9.13 indicates autochthonous (in-situ) source for organic matter, for which phytoplanktons and algae may be the major contributors. However, N/P ratio lower than the Redfield ratio indicated a limitation of either N or P in the study area. Calcium carbonate concentration is low possibly due to increased loads of clay which must have caused the dilution of carbonates. Metals like Fe, Mn and Mg exhibit strong correlation with lithogenic elements while, the trace metals such as Cd, Co, Cu, Ni and Zn show significant correlation with organic elements indicating that lithogenic and biogenic inputs are their main sources. Trace elements namely, Cd and Zn show nutrient like behavior suggest the role of trace metal in addition to nutrients in the regulation of productivity. Thus, the present study provides an understanding of recent sedimentary environments and processes, which are used as a tool to interpret palaeoenvironmental records. | |||||
書誌情報 |
en : Polar Science 巻 18, p. 63-71, 発行日 2018-12 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18739652 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.polar.2018.06.002 | |||||
関連名称 | 10.1016/j.polar.2018.06.002 |