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북서태평양 아열대 해역에서 침강입자 플럭스의 시·공간 변동
김형직,형기성,유찬민,전동철,정진현,김부근,김동선,Kim, Hyung-Jeek,Hyeong, Ki-Seong,Yoo, Chan-Min,Jeon, Dong-Chull,Jeong, Jin-Hyun,Khim, Boo-Keun,Kim, Dong-Seon 한국해양과학기술원 2011 Ocean and Polar Research Vol.33 No.suppl3
Time-series sediment traps were deployed at 1,000 m water depth of the northwestern subtropical Pacific from July 2009 to June 2010, with the aim of understanding temporal and spatial variations of sinking-particle fluxes. The opening and closing of the traps was synchronized at 18-day periods for 20 events. Total mass fluxes showed distinct seasonal variations with high values for the summer-fall seasons and relatively low values for winter-spring. This seasonal variation at two stations was characterized by a distinct difference in $CaCO_3$ fluxes between the two seasons. The enhanced $CaCO_3$ flux in the summer - fall seasons might be attributed to an increased planktonic foraminiferal flux. Total mass flux at FM10 station was nearly 50% higher than that at FM1 station. The difference in $CaCO_3$ fluxes between two stations contributed nearly 70% of the difference of total mass fluxes. The $CaCO_3$ flux was a major component controlling temporal and spatial variation of sinking - particle fluxes in the western subtropical Pacific Ocean.
동태평양 열대해역에서 2009-2010년 침강입자 플럭스의 수직 변화
김형직,조소설,김동선,김경홍,유찬민,Kim, Hyung Jeek,Cho, Sosul,Kim, Dongseon,Kim, Kyeong Hong,Yoo, Chan Min 한국해양과학기술원 2022 Ocean and Polar Research Vol.44 No.3
A sediment trap had been deployed at 1250 m depth in the Eastern Tropical Pacific (ETP) from September 2009 to July 2010, with the aim of understanding the temporal and vertical variability of particle flux. During the monitoring period, total particle flux varied from 12.4 to 101.0 mg m<sup>-2</sup>day<sup>-1</sup>, with the higher fluxes in January-March 2010. Biogenic particle flux varied in phase with the total particle flux. The increase in total particle flux during January-March 2010 was attributed to the enhanced biological production in the surface layer caused by wind-driven mixing in response to the seasonal shifts in the location of the Intertropical convergence zone. The export ratio (e-ratio) was estimated using the particulate organic carbon flux and satellite-derived net primary production data. The estimated e-ratios changed between 0.8% and 2.8% (1.4±0.6% on average). The ratio recorded in the negative phase of Pacific decadal oscillation (PDO) was similar to the previous results obtained from the ETP during the 1992/93 periods in the positive phase of PDO. This suggests that the regime shift of the PDO is not related to the carbon export ratio.