Abstract
A sediment trap experiment was carried out in conjunction with an over flight of Ocean Color Temperature Scanner (OCTS) on board Advanced Earth Observing Satellite (ADEOS) at 40°N, 143°E off Sanriku in April to May 1997. Short term variability of particle fluxes was examined at depths of 450 m and 600 m from April 6 to May 1 with a sampling interval of two days, and at 450 m with one day interval from 2nd to 10th May. Daily averaged mass flux at 450 m and 600 m was 815 mg m−2d−1 and 862 mg m−2d−1, respectively. A sharp increase in mass flux was observed during the period from April 26 to April 29 with the highest mass flux of 8 g m−2d−1. About 85% of the total mass flux for the entire duration (26 days) was collected within these 4 days. Trapped material during the peak flux period was mainly composed of diatoms dominated byThalassiosira spp. and resting spores ofChaetoceros spp. This suggested that the peak flux was the result of (a) diatom bloom(s) in the euphotic column. Current meter records at 420 m showed that on April 26 and 27, the period when the peak flux was observed, the southwestward current had diminished in strength and changed its direction northwestward. Low current speeds appeared to have enhanced trap efficiency to help form the peak flux. A time series of OCTS Intensive-LAC (Local Area Coverage: Region B) images from mid-March to early May was examined todetect phytoplankton bloom(s). In the March 26th Chl image, high concentration region was restricted to the southwest off Cape Erimo, but spread around the warm core ring (WCR) 93A by April 10. East of the WCR93A, high Chl concentration remained steady until May, but to the west of the WCR93A, Chl decreased rapidly before the 19th of April. From this observation we suspect that the peak flux observed at the end of April originated from a bloom, which ceased on the 17th or 18th of April, in the region north of 40°N and west of 143°E. Taking the current meter records into account, the source region for the trapped material is most likely around southwest of the Cape Erimo.
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References
Asper, V. L., W. G. Deuser, G. A. Knauer and S. E. Lohrenz (1992): Rapid coupling of sinking particle fluxes between surface and deep ocean waters.Nature,357, 670–672.
Deuser, W. G., E. H. Ross and R. F. Anderson (1981): Seasonality in the supply of sediment to the deep Sargasso Sea and implications for the rapid transfer of matter to the deep ocean.Deep-Sea Res.,28, 495–505.
Deuser, W. G., F. E. Müller-Karger, R. H. Evans, O. B. Brown, W. E. Esaias and G. C. Feldman (1990): Surface-ocean color and deep-ocean carbon flux: How close a connection?Deep-Sea Res.,37, 1,331–1,343.
Frost, B. W. (1987): Grazing control of phytoplankton stock in the open subarctic Pacific Ocean: a model assessing the role of mesozooplankton, particularly the large calanoid copepodNeocalanus spp.Mar. Ecol. Prog. Ser.,39, 49–68.
Gust, G., R. H. Byrne, R. E. Bernstein, P. R. Betzer and W. Bowles (1992): Particle fluxes and moving fluids: experience from synchronous trap collections in the Sargasso Sea.Deep-Sea Res.,39, 1,071–1,983.
Gust, G., A. F. Michaels, R. Johnson, W. G. Deuser and W. Barber (1994): Mooring line motions and sediment trap hydrodynamics:in situ intercomparison of three common deployment designs.Deep-Sea Res.,41, 831–858.
Honjo, S. (1984) Study of ocean fluxes in time and space by bottom-tethered sediment trap arrays: a recommendation. p. 305–324. InGlobal Ocean Flux Study; Proceedings of a Workshop, National Academy Press, Washington, D.C.
Honjo, S. and S. Manganini (1993): Annual biogenic particle fluxes to the interior of the North Atlantic Ocean: studied at 34°N 21°W and 48°N 21°W.Deep-Sea Res.,40, 587–607.
Jickells, T. D., P. P. Newton, P. King, R. S. Lampitt and C. Boutle (1996): A comparison of sediment trap records of particle fluxes form 19 to 48°N in the northeast Atlantic and their relation to surface water productivity.Deep-Sea Res.,43(7), 971–986.
Kasai, H., H. Saito and A. Tsuda (1998): Estimation of standing stock of chlorophylla and primary production from remotesensed ocean color in the Oyashio region, the western subarctic Pacific, during the spring bloom in 1997.J. Oceanogr.,54, this volume, 527–537.
Kawai, H. (1972): Hydrography of the Kuroshio Extension. p. 235–352. InKuroshio: Physical Aspects of the Japan Current, ed. by H. Stommel and K. Yoshida, Univ. Washington Press, U.S.A.
Lampitt, R. S. (1985): Evidence for the seasonal deposition of detritus to the deep-sea floor and its subsequent resuspension.Deep-Sea Res.,32, 885–897.
Marumo, R. and M. Amano (1956): Planktological and hydrographical conditions in the Yakumizu water east of Miyako in May 1995.J. Oceanogr. Soc. Japan,12, 53–58.
Masuzawa, T., S. Noriki, T. Kurosaki, S. Tsunogai and M. Koyama (1989): Compositional change of settling particles with water depth in the Japan Sea.Mar. Chem.,27, 61–78.
Moore, B., III and B. Bolin (1987): The oceans, carbon dioxide, and global climate change.Oceanus,29, 9–15.
Mortlock, R. A. and P. N. Froelich (1989): A simple method for the rapid determination of biogenic opal in pelagic marine sediments.Deep-Sea Res.,36, 1,415–1,426.
Noriki, S. and S. Tsunogai (1986): Particle fluxes and major components of settling particles from sediment trap experiments in the Pacific Ocean.Deep-Sea Res.,33(7), 903–912.
Shimada, M., H. Oaku, Y. Mitomi, H. Murakami, A. Mukaida, Y. Nakamura, J. Ishizaka, H. Kawamura, T. Tanaka, M. Kishino and H. Fukushima (1998): Calibration and validation of the ocean color version-3 product from ADEOS OCTS.J. Oceanogr.,54, this volume, 401–416.
Siegel, D. A., T. C. Granata, A. F. Michaels and T. D. Dickey (1990): Mesoscale eddy diffusion, particle sinking, and the interpretation of sediment trap data.J. Geophys. Res.,95(C4), 5,305–5,311.
Takahashi, K. (1986): Seasonal fluxes of pelagic diatoms in the subarctic Pacific, 1982–1983.Deep-Sea Res.,33, 1,225–1,251.
Tsunogai, S., S. Noriki, K. Harada, T. Kurosaki, Y. Watanabe and M. Maeda (1986): Large but variable particulate flux in the Antarctic Ocean and its significance for the chemistry of Antarctic water.J. Oceanogr. Soc. Japan,42, 83–90.
Uehara, K., H. Miyake and M. Okazaki (1997): Characteristics of the flows on the Oyashio area off Cape Erimo, Hokkaido, Japan.J. Oceanogr.,53, 93–103.
Yasuda, I., K. Okuda and M. Hirai (1992): Evolution of a Kuroshio warm-core ring—variability of the hydrographic structure.Deep-Sea Res.,39 (Suppl. 1A), 131–162.
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Saino, T., Shang, S., Mino, Y. et al. Short term variability of Particle fluxes and its relation to variability in sea surface temperature and chlorophylla field detected by Ocean Color and Temperature Scanner (OCTS) off Sanriku, northwestern North Pacific in the spring of 1997. J Oceanogr 54, 583–592 (1998). https://doi.org/10.1007/BF02742460
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DOI: https://doi.org/10.1007/BF02742460