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Environmental Controls of Diffusive and Ebullitive Methane Emissions at a Subdaily Time Scale in the Littoral Zone of a Midlatitude Shallow Lake
http://hdl.handle.net/10091/0002001242
http://hdl.handle.net/10091/000200124252f9e7ad-7d27-49b9-9b81-5ccb0ab2a434
| 名前 / ファイル | ライセンス | アクション |
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17H05039-1.pdf
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||||||
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| 公開日 | 2022-11-21 | |||||||||||||||||
| タイトル | ||||||||||||||||||
| タイトル | Environmental Controls of Diffusive and Ebullitive Methane Emissions at a Subdaily Time Scale in the Littoral Zone of a Midlatitude Shallow Lake | |||||||||||||||||
| 言語 | ||||||||||||||||||
| 言語 | eng | |||||||||||||||||
| DOI | ||||||||||||||||||
| 関連識別子 | https://doi.org/10.1029/2020JG005753 | |||||||||||||||||
| 関連名称 | 10.1029/2020JG005753 | |||||||||||||||||
| 資源タイプ | ||||||||||||||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||
| タイプ | journal article | |||||||||||||||||
| 著者 |
Taoka, T.
× Taoka, T.
× Iwata, H.
× Hirata, R.
× Takahashi, Y.
× Miyabara, Y.
× Itoh, M.
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| 信州大学研究者総覧へのリンク | ||||||||||||||||||
| 氏名 | 岩田, 拓記 | |||||||||||||||||
| URL | https://soar-rd.shinshu-u.ac.jp/profile/ja.WCAaPafh.html | |||||||||||||||||
| 信州大学研究者総覧へのリンク | ||||||||||||||||||
| 氏名 | 宮原, 裕一 | |||||||||||||||||
| URL | https://soar-rd.shinshu-u.ac.jp/profile/ja.HNnFOakh.html | |||||||||||||||||
| 出版者 | ||||||||||||||||||
| 出版者 | American Geophysical Union | |||||||||||||||||
| 引用 | ||||||||||||||||||
| 内容記述 | Journal of Geophysical Research-Biogeoscience 125(9) : e2020JG005753-(2020) | |||||||||||||||||
| 書誌情報 |
Journal of Geophysical Research-Biogeoscience 巻 125, 号 9, p. e2020JG005753, 発行日 2020-09-08 |
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| 抄録 | ||||||||||||||||||
| 内容記述 | Environmental controls on methane (CH4) emission from lakes are poorly understood at subdaily time scales due to a lack of continuous data, especially for ebullition. We used a novel technique to partition eddy covariance CH4 flux observed in the littoral zone of a midlatitude shallow lake in Japan and examined the environmental controls on diffusion and ebullitive CH4 flux separately at a subdaily time scale in different seasons. Using the high‐frequency data, we investigated how CH4 accumulation in the water and sediment layers alters the dynamics and environmental controls of fluxes. The contribution of ebullitive flux to total flux was 57% on average. Environmental controls of diffusive and ebullitive fluxes known in the literature were confirmed. We further found that the environmental controls were different in different seasons and suggested that additional consideration of CH4 accumulation could explain the variability. The transfer of accumulated dissolved CH4 from the bottom water layer to the surface in summer and the accumulation of dissolved CH4 under surface ice in winter were suggested to be important for explaining the variability of diffusive flux. In summer, a higher ebullitive flux tended to occur following triggers such as a decrease in hydrostatic pressure. In winter, the impact of triggers was not obvious, and a higher ebullitive flux tended to occur in the morning. We suggested that the low CH4 production rate in winter slowed the replenishment of bubbles in the sediment, negating the effect of triggers on ebullition. | |||||||||||||||||
| 資源タイプ（コンテンツの種類） | ||||||||||||||||||
| ISSN | ||||||||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||||||||
| 収録物識別子 | 2169-8961 | |||||||||||||||||
| 書誌レコードID | ||||||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||||||
| 収録物識別子 | AA12077675 | |||||||||||||||||
| 権利 | ||||||||||||||||||
| 権利情報 | ©2020. American Geophysical Union. All Rights Reserved. | |||||||||||||||||
| 出版タイプ | ||||||||||||||||||
| 出版タイプ | VoR | |||||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||||
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Taoka, T., Iwata, H., Hirata, R., Takahashi, Y., Miyabara, Y., Itoh, M., 2020, Environmental Controls of Diffusive and Ebullitive Methane Emissions at a Subdaily Time Scale in the Littoral Zone of a Midlatitude Shallow Lake: American Geophysical Union, e2020JG005753– p.
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