کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
30597 44491 2008 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spatial and seasonal variations in attenuation of solar ultraviolet radiation in Lake Biwa, Japan
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Spatial and seasonal variations in attenuation of solar ultraviolet radiation in Lake Biwa, Japan
چکیده انگلیسی

Seasonal changes in diffuse ultraviolet (UV) and visible light attenuations and inherent optical properties in the lake water were monitored at the pelagic and littoral shallow zones of Lake Biwa which features a broad range of optical conditions within a single large water body. We considered the absorption factors that affect UV attenuation, and clarified the contribution of the absorption of suspended particles and chromophoric dissolved organic matter (CDOM) by multiple regression analyses of the monitoring data. The variability of UV attenuations in the lake demonstrated a strong contrast between the pelagic and the shallow zones. The latter were characterized by turbid systems supplying suspended matter as well as CDOM, whereas the former was far from the turbid systems in the littoral zone or the lake bottom. In this lake, the regulation of UV and light attenuations is rendered competitive by the absorption of suspended particles and CDOM in the lake water, hence, the UV penetration has both spatial and temporal variability based on changes in the physical and biological condition of the lake.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 90, Issue 2, 27 February 2008, Pages 121–133
نویسندگان
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