| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2018-08-06 |
| タイトル |
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タイトル |
Magnetic properties of surficial sediments in Lake Ogawara on the Pacific coast of northeastern Japan: spatial variability and correlation with brackish water stratification |
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言語 |
en |
| 言語 |
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|
言語 |
eng |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Environmental magnetism |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
|
主題 |
Lake sediment |
| キーワード |
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言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Magnetic properties |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Reductive diagenesis |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
|
主題 |
Storage diagenesis |
| 資源タイプ |
|
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 著者 |
Hayashida, Akira
Nakano, Ryoma
Nagashima, Aya
Seto, Koji
Yamada, Kazuyoshi
Yonenobu, Hitoshi
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| 所属（英） |
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en |
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Department of Environmental Systems, Doshisha University |
| 所属（英） |
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en |
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Department of Environmental Systems, Doshisha University |
| 所属（英） |
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en |
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Research Center for Coastal Lagoon Environments, Shimane University |
| 所属（英） |
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en |
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Research Center for Coastal Lagoon Environments, Shimane University |
| 所属（英） |
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en |
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Museum of Natural and Environmental History, Shizuoka Prefecture |
| 所属（英） |
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en |
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Naruto University of Education |
| 抄録（英） |
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内容記述タイプ |
Other |
|
内容記述 |
To examine limnological conditions in Lake Ogawara on the Pacific coast of northwestern Japan, we investigated the magnetic properties of dredged bottom sediment originally collected from the lake in the summer of 2011. We used non-destructive methods to measure the low-field magnetic susceptibility shortl after sampling, and anhysteretic remanent magnetization (ARM) was assessed in 2012 and 2015. The ARM acquisition and demagnetization curves from littoral sites showed several patterns that reflect the provenance of the sediments. At water depths below 10 m, the magnetic susceptibility and ARM of greenish black mud with high organic content decreased considerably with the increase in water depth, but ARM increased slightly at water depths greater than 16 m. We also found that the magnetic concentrations of mud samples were reduced markedly during a period of storage for about 3 years. We attributed these reductions to diagenetic loss of magnetic minerals, which had been enhanced at deeper sites. It is possible that the ARM carriers in deeper areas were derived from authigenic formation of iron sulfide or from deposition of suspended matter in the hypolimnion water. We propose that the magnetic properties of surficial sediments are controlled by limnological stratification of the brackish lake water, thus possibly providing an analog for down-core variations of magnetic parameters associated with the modification of magnetic minerals during reductive diagenesis. |
|
言語 |
en |
| 書誌情報 |
en : Earth, Planets and Space
巻 67,
号 171,
p. 1-9,
発行日 2015
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| 出版者 |
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出版者 |
Springer Science & Business Media |
|
言語 |
en |
| ISSN |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
1880-5981 |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
10.1186/s40623-015-0343-7 |
| 権利 |
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権利情報 |
© 2015 Hayashida et al. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 本文の有無 |
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本文あり |
yonenobu_20161222_2.pdf (2.1 MB)
