The Kuroshio current (KC) is the major current of the western Pacific Ocean, and its main stream flows northward off the east coast of Taiwan. Since there have been few researches on sinking particle flux in the regime of Kuroshio have been reported, a time-series sediment trap mooring was deployed to investigate the particulate organic carbon (POC) and total nitrogen (TN) and their fluxes at KC station (21o28' N, 122o11' E) at depths of 2000 m and 3500 m from April 2008 to December 2009.
Results show that, the mass fluxes at 2000 m and 3500 m of mean are 162.3 mg m-2 d-1 and 201.6 mg m-2 d-1, POC fluxes are 3.8 mgC m-2 d-1 and 3.7 mgC m-2 d-1, and TN fluxes are 0.5 mgN m-2 d-1 and 0.5 mgN m-2 d-1, respectively. The averages of POC, TN content and C/N ratio at 2000 m and 3500 m are 2.5 and 1.8 wt%, 0.3 and 0.2 wt%, and 9.27 and 9.21, separately.
The depths and temporal variability of POC and TN contents respond closely to bio-degradation and dilution by bottom movement at KC station. Comparison with SEATS station (18o15¡¦N, 115o50¡¦E), the variability of POC and TN compositions and their fluxes at KC are lower than SEATS station. The fluxes of KC exhibit intermittent high-value in the summer, and the fluxes of SEATS in the winter are higher than other seasons. For site comparison and global synthesis, an average e-ratio of 0.08 and the b-value of 0.53 are derived. These results should help a better understanding of POC in the world.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0902110-114526 |
| Date | 02 September 2010 |
| Creators | Chuang, Yueh-chi |
| Contributors | none, none, David D. Sheu, none |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0902110-114526 |
| Rights | restricted, Copyright information available at source archive |
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