کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5764442 | 1626067 | 2017 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Distributions of dimethylsulfide and its related compounds in the Yangtze (Changjiang) River Estuary and its adjacent waters in early summer
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
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![عکس صفحه اول مقاله: Distributions of dimethylsulfide and its related compounds in the Yangtze (Changjiang) River Estuary and its adjacent waters in early summer Distributions of dimethylsulfide and its related compounds in the Yangtze (Changjiang) River Estuary and its adjacent waters in early summer](/preview/png/5764442.png)
چکیده انگلیسی
Dimethylsulfide (DMS) is an important and dominant sulfur compound that is transferred from the ocean to the atmosphere. In this study, the spatiotemporal variations in DMS concentrations and its two closely related compounds, namely, dimethylsulfoniopropionate (DMSP) and acrylic acid (AA), were investigated in the Yangtze (Changjiang) River Estuary and its adjacent waters, where the salinity changed dramatically in June 2014. The concentration ranges (average values) of DMS, DMSP, and AA were 1.10-27.5 (8.53), 5.93-195 (40.1), and 4.2-122.6 (17.9) nmol Lâ1 in the surface waters, respectively. The DMS and DMSP concentrations were higher in the study area than in its neighboring regions because of the high levels of nutrients originating in the Yangtze and Qiantang Rivers. However, the AA concentration was lower in the study area. Although no significant correlations were found between DMS, DMSP, or AA and salinity, high concentrations of DMS, AA, and DMSP were recorded between the salinity levels of 26â° and 31â°. DMS and AA concentrations were positively correlated with chlorophyll a. The average AA/(DMSP+AA) and DMS/(DMSP+AA) ratios were 36.9% and 17.1%, respectively. The vertical profiles of DMSP and DMS presented similar variation patterns, and high concentrations of both compounds were mostly detected in the surface waters. By contrast, AA showed a different variation pattern compared with those of DMSP and DMS because AA could have other potential sources. The low average sea-to-air flux of DMS (that is, 6.55 μmol mâ2 dâ1) was mainly attributed to the low wind speed in early summer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Continental Shelf Research - Volume 146, 15 August 2017, Pages 89-101
Journal: Continental Shelf Research - Volume 146, 15 August 2017, Pages 89-101
نویسندگان
Ting-Ting Tan, Xi Wu, Chun-Ying Liu, Gui-Peng Yang,