Item type |
学術雑誌論文 / Journal Article(1) |
公開日 |
2019-09-30 |
タイトル |
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タイトル |
Usability of water surface reflectance for the determination of riverine dissolved methane during extreme flooding in northeastern Siberia |
タイトル |
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言語 |
en |
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タイトル |
Usability of water surface reflectance for the determination of riverine dissolved methane during extreme flooding in northeastern Siberia |
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 |
Flooding |
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 |
Dissolved methane concentration |
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 |
Arctic |
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 |
Landsat 8 |
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 |
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資源タイプ |
journal article |
アクセス権 |
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アクセス権 |
metadata only access |
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アクセス権URI |
http://purl.org/coar/access_right/c_14cb |
著者 |
Morozumi, Tomoki
Shingubara, Ryo
Murase, Jun
Nagai, Shin
Kobayashi, Hideki
Takano, Shinya
Tei, Shunsuke
Fan, Rong
Maximov, Trofim C.
Sugimoto, Atsuko
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抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
An extreme flooding event occurred from June to July 2017 in the Indigirka River lowland of northeastern Siberia. We used Landsat 8 satellite surface reflectance data to detect the flood inundation area and extract water color for delineating different water sources. We also took direct samples of dissolved methane concentrations in the river water. Relatively high concentrations of dissolved methane (0.7–1.1 μmol l−1, or μM) were observed in four tributary areas in 2017 during the flood's recession, while the values remained low in the main channel (0.2–0.3 μM). In contrast, the concentrations of dissolved methane were low in both the main channel and tributaries during the non-flood period of 2016 (0.1–0.2 μM). We then used 2017 satellite reflectance data with an empirical model to estimate the spatial differences of dissolved methane concentration for water sources contributing to the methane-poor main channel and methane-rich tributaries and applied the results to the calculation of riverine methane in the study region (approx. 200 × 300 km). This approach to estimating dissolved methane concentrations using satellite reflectance can provide a new tool for environmental monitoring of flood events in remote areas. |
書誌情報 |
en : Polar Science
巻 21,
p. 186-194,
発行日 2019-09
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ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
18739652 |
DOI |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1016/j.polar.2019.01.005 |
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関連名称 |
10.1016/j.polar.2019.01.005 |