북동태평양 KOMO 정점에서 수온약층에 따른 무기영양염 분포 특성 (1995-2002)
Inorganic Nutrient Distributions in Association with Thermocline at KOMO Station in the Northeast Equatorial Pacific Ocean during 1995-2002
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Abstract
Annual variations of inorganic nutrients such as nitrate(+nitrite), phosphate and silicate in association with thermocline were investigated in the upper 200 m of the water column at KODES Long-term Monitoring (KOMO) station in the northeast equatorial Pacific from 1995 to 2002. Global climatic disturbances such as El Nio and La Nia, should have affected KODES area during the study period. In 1995-97 and 2000-2002, a thermocline where temperatures rapidly decrease with depth, was formed at 50-70 m water depth. Nutrient depletion, specially for nitrate and phosphate, was extended down to approximately 50 m depth, which coincided with the surface mixed layer depth. In 1998 and 1999, however a very fluctuating thermocline was observed at 20-100 m water depth. In the photic zone (up to 100 m depth), depth integration of nitrate, phosphate and silicate ranged from 2.02 to 23.14 gN/m2, from 0.87 to 4.05 gP/m2 and from 35.67 to 176.21 gSi/m2, respectively. As a result of changes in the water column structures, nutrient concentrations also showed fluctuation parallel to the changes of thermocline in the study area.
참고문헌 (18)
- "북동적도태평양 표층 수온변화에 따른 화학적 환경 특성", 4, pp.24~37 (2001)
- "'99 심해저 광물자원 탐사 보고서", pp.780~ (1999), 해양수산부
- "2000 심해저 광물자원 탐사 보고서", pp.594~ (2001), 해양수산부
- "Primary productivity and its regulation in the equatorial Pacific during and following the 1991-1992 El Nino", 43, pp.933~969 (1996)
- "Spatial and temporal variability of plankton pigment distributions in the central equatorial Pacific Ocean", 43, pp.809~833 (1996)
- "D.S. and D.V. Hansen. 1989. Direct measurements of current shear in the tropical Pacific Ocean and its effect on drift buoy performance. J. Atmos. Ocean Technol.", pp.274~279
- "Chemical Oceanography. Vol. 1. eds. by J.P. Riley and G. Skirrow. Academic Press"
- "El Nino theme page" (2004)
- "CO2 distributions in the equatorial Pacific during the 1991-1992 ENSO event", 42, pp.365~386 (1995)
- "T. and Y. Horibe. 1983. Abyssal circulation in the Japan Sea. J. Oceanogr. Soc. Japan", pp.220~230
- "C. and E.T. Peltzer. 1994. Comparison of August-September 1991 and 1979 surface partial pressure of CO2 distribution in the equatorial Pacific Ocean near 150oW. Mar. Chem.", pp.257~266
- "Mixed layer circulation during EqPac and some thermochemical implications for the equatorial cold tongue", 43, pp.707~724 (1996)
- "Micro-phytoplankton of the equatorial Pacific: 140oW meridianal transect during the 1992 El Nino", 42, pp.535~558 (1995)
- "A U.S. JGOFS process study in the equatorial Pacific (EqPac): Introduct", 42, pp.275~293 (1995)
- "and C.M. Lalli. 1984. A manual of chemical and biological methods for seawater analysis. Pergamon Press", pp.173~
- "Introduction to oceanography", pp.496~ (1995), Harper Collins
- "Chemical Oceanography. eds. by J.P. Riley and G. Skirrow. Academic Press"
- "The past and the future of El Nino", 390, pp.562~564 (1997)