| LIN Shaoying,ZOU Tao,GAO Huiwang,GUO Xinyu. 2009. The vertical attenuation of irradiance as a function of turbidity: a case of the Huanghai(Yellow) Sea in spring. Acta Oceanologica Sinica, (5):66－75 |
| The vertical attenuation of irradiance as a function of turbidity: a case of the Huanghai(Yellow) Sea in spring |
| The vertical attenuation of irradiance as a function of turbidity: a case of the Huanghai(Yellow) Sea in spring |
| Received:March 31, 2009 Revised:September 06, 2009 |
| DOI： |
| Key words:Photosynthetically available radiation Diffuse attenuation coefficient Turbidity Chlorophyll a the Huanghai(Yellow) Sea |
| 中文关键词: Photosynthetically available radiation Diffuse attenuation coefficient Turbidity Chlorophyll a the Huanghai(Yellow) Sea |
| 基金项目:The National Natural Science Foundation of China for supporting this work financially under Contracts No40490262;Guo Xinyu thanks the support from JSPS KAKENHI(21310012) |
| Author Name | Affiliation | E-mail | | LIN Shaoying | Key Laboratory of Marine Environment and Ecology, Ministry of Education of China, Ocean University of China, Qingdao 266100, China | GAO Huiwang,E-mail:hwgao@ouc.edu.cn | | ZOU Tao | Key Laboratory of Marine Environment and Ecology, Ministry of Education of China, Ocean University of China, Qingdao 266100, China | | | GAO Huiwang | Key Laboratory of Marine Environment and Ecology, Ministry of Education of China, Ocean University of China, Qingdao 266100, China | | | GUO Xinyu | Center for Marine Environmental Studies, Ehime University, 2-5 Bunkyo-Cho, Matsuyama 790-8577, Japan | |
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| Abstract: |
| The planar photosynthetically available radiation (PAR),turbidity and concentration of chlorophyll a (chl a),were measured at 26 stations in the Huanghai (Yellow) Sea during a cruise of China SOLAS from 19 to 27 March 2005.Due to low chl a (<0.35 mg·m-3) in upper layers (above 5 m),suspended particulate matter became the major factor that influenced the turbidity in early spring.The calculated vertical diffuse attenuation coefficient of PAR,KPAR,varied with water depths with a maximum value in the upper 5 m layer.The mean KPAR in survey area was 0.277±0.07 m-1 that is considerably higher than most of the other case 2 waters.Within the survey area,KPAR also showed distinct regional characteristics,corresponding to the distribution of turbidity.Based on measurements,the relationship between KPAR and turbidity as well as chl a was established.It was suggested that suspended particulate matter plays an important role in light attenuation in the Huanghai (Yellow) Sea in spring. |
| 中文摘要: |
| The planar photosynthetically available radiation (PAR),turbidity and concentration of chlorophyll a (chl a),were measured at 26 stations in the Huanghai (Yellow) Sea during a cruise of China SOLAS from 19 to 27 March 2005.Due to low chl a (<0.35 mg·m-3) in upper layers (above 5 m),suspended particulate matter became the major factor that influenced the turbidity in early spring.The calculated vertical diffuse attenuation coefficient of PAR,KPAR,varied with water depths with a maximum value in the upper 5 m layer.The mean KPAR in survey area was 0.277±0.07 m-1 that is considerably higher than most of the other case 2 waters.Within the survey area,KPAR also showed distinct regional characteristics,corresponding to the distribution of turbidity.Based on measurements,the relationship between KPAR and turbidity as well as chl a was established.It was suggested that suspended particulate matter plays an important role in light attenuation in the Huanghai (Yellow) Sea in spring. |
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