1 / 1

Background

Fig. 3. The d istributions of salinity in TS. (b). (a). Fig. 1. The sampling locations in the studied area. Station 19A represented Changjiaug plume water, Station F represented SCS water, and Station S5 represented KW.

hashim
Télécharger la présentation

Background

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Fig. 3. The distributions of salinity in TS. (b) (a) Fig. 1.The sampling locations in the studied area. Station 19A represented Changjiaug plume water, Station F represented SCS water, and Station S5 represented KW. Fig. 2. The temperature–salinity plots in the TS. Two major water types can be identified: one was Kuroshio influenced SCS water, and the other was freshwater dominated coastal water. Fig. 4. The contours of DOC (a), and DON (b) in TS. The concentration was slightly higher in the China coast than in the Taiwan coast, and the highest concentration was always found in theMinjiang plume, revealing a significant impact of riverdischarge. Fig. 6. The distributions of aCDOM(355), spectral slope coefficient (S) ,and terrestrial humic-like CDOM (Ft) in TS. Fig. 7. The fluorescence intensity of terrestrial humic-like CDOM correlated inversely with salinity in TS. This may indicate that the terrestrial humic-like CDOM can be used as an optical tracer for the mixing of source waters (Changjiaug Dilute Water, Minjiang Water, South China Sea Water and Kuroshio Water) in TS. Fig. 9. A significant correlation between marine and terrestrial humic-like CDOM implied that terrestrial input nutrient supported biological production and provided the source of marine-like CDOM. Conclusions • Distributions of DOM and CDOM in TS are controlled mainly by local freshwater input and water mixing from the CDW, SCS Water and KW. • As the unique characteristics and conservative behavior of terrestrial humic-like CDOM (Ft) in each source water, the Ft can be used as an optical tracer for the mixing of source waters (Changjiaug Dilute Water, Minjiang Water, South China Sea Water and Kuroshio Water) in TS. • Both nutrients and DOM were dominated by terrestrial inputs in TS, as significant correlations were found between DIN and Ft and between marine-like CDOM and Ft. Background The Taiwan Strait (TS) is a marginal sea of interest as it receives freshwater from both Taiwan Island and mainland China and it also connects water transports between East China Sea (ECS), South China Sea (SCS) and Kuroshio Water (KW). During the early summer season, northern SCS Water influenced by Kuroshio intrusion flows northward through the TS, mixing with local river plumes and/or ECS Waters. We attempt to study the geochemical characteristics of DOM and CDOM along with hydrological properties in the TS to understand the controls of DOM and CDOM distributions in the TS. Results and Discussion DISTRIBUTIONS AND CHARACTERISTICS OF TOTAL AND COLORED DISSOLVED ORGANIC MATTER IN THE TAIWAN STRAIT Wan-Tzu Lu, Jia-Jang Hung Institute of Marine Geology and Chemistry, National Sun Yat-San University, Kaohsiung, Taiwan, ROC Fig. 5 showedthe ratio of DON:DOP in the TS. Different slopes and their corresponding locations were marked with the same color. The average ratio of DOC:DON:DOP was about 330:46:1. The highest ratio was observed around the Minjiang plume. Fig. 8. The correlation is significantbetween DIN and terrestrial humic-like CDOM suggesting that both nutrients and terrestrial humic-like CDOM came mainly from river input.

More Related