Measurements of Energy Flux and Biological Material through/under Sea Ice Cover for Modelling of Sea-Ice Ecosystem

通过/海冰覆盖下的能量通量和生物材料测量，用于海冰生态系统建模

• 批准号: 05680440
• 负责人: SHIRASAWA Kunio
• 金额: $ 1.34万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05680440/
• 关键词: Sea Ice; Sea-Ice Ecosystem; Saroma-ko Lagoon; Air-Sea-Ice Interaction; Momentum Flux; Heat Flux; Suspended Particulate Matter; Ice Algae; 生態系; オホーツク海; 氷縁域; 物質フラックス; 大気-海水-海洋相互作用; 水縁域

This study was conducted to characterize physical and biological processes at Saroma-ko Lagoon during the ice-covered period of 1993-1995. A meteorological station was established at the cape of Kumuaneppu at the southeast of the lagoon to monitor seasonal changes of atmospheric and oceanic processes throughout the year. An ice camp was established to study atmospheric, oceanic, sea-ice and biological processes during the ice-covered period at Saroma-ko Lagoon. Thermistor chains were installed in the sea ice cover to measure heat flux through the sea ice cover. A 3-D current meter and a conductivity-temperature meter were installed under the ice to measure momentum, oceanic heat and salt fluxes at/near the ice-water interface. Sediment traps were deployed just under the ice to estimate the vertical flux of ice algae. A number of ice cores were obtained to determine vertical profiles of physical and biological components of sea-ice cores. Some results of this study are summarized as follows : (1) Fluid dynamic processes related to sea ice contributed significantly to biological processes at/near the ice-water interface. (2) The development of brine channels in the sea ice appeared to affect the vertical flux of ice algae. (3) It was shown that multiple peaks of chlorophyll a flux which were consisted of ice algal cells were related to the increase in sea-ice temperature. (4) Contribution of ice algae to the vertical flux was relatively small during night and large during day.Sediment traps were deployed nearly at the center of the east basin of Saroma-ko Lagoon at mid-December 1994, and will be recovered after ice-breakup at the end of April 1995.

本研究旨在描述 1993 年至 1995 年冰雪覆盖期间萨罗马湖泻湖的物理和生物过程特征。在泻湖东南部的库穆阿内普海角建立了气象站，监测全年大气和海洋过程的季节变化。在萨罗马湖泻湖建立了一个冰营，以研究冰覆盖时期的大气、海洋、海冰和生物过程。热敏电阻链安装在海冰盖中，用于测量穿过海冰盖的热通量。冰下安装了 3D 海流计和电导率温度计，用于测量冰水界面处/附近的动量、海洋热量和盐通量。沉积物收集器部署在冰层下方，以估计冰藻的垂直通量。获得了许多冰芯来确定海冰芯的物理和生物成分的垂直剖面。本研究的一些结果总结如下：（1）与海冰相关的流体动力过程对冰水界面处/附近的生物过程有显着贡献。 (2)海冰中盐水通道的发育似乎影响了冰藻的垂直通量。 (3)结果表明，由冰藻细胞组成的叶绿素a通量的多个峰值与海冰温度的升高有关。 (4)冰藻对垂直通量的贡献夜间较小，白天较大。1994年12月中旬，在萨罗马湖东盆地近中心处设置了沉积物捕集器，1995年4月底冰消解后将恢复。

项目成果

Shirasawa, K., Ikeda, M., Takatsuka, T., Ishikawa, M., Aota, M., Ingram, R.G., Belanger, C., Peltora, P., Takahashi, S., Matsuyama, M., Hudier, E., Fujiyoshi, Y., Kodama, Y.and Ishikawa, N.: ""Atmospheric and oceanographic data report for Saroma-ko lagoon

白泽，K.，池田，M.，高冢，T.，石川，M.，青田，M.，英格拉姆，R.G.，贝兰格，C.，佩尔托拉，P.，高桥，S.，松山，M.，胡迪尔

Shirasawa, K.and Ingram, R.G: ""Comparative study of oceanographic characteristics above/under first-year ice at low and high latitudes"" Proc. NIPR Symp. Polar Biology. 8. 20-28 (1995)

Shirasawa, K. 和 Ingram, R.G：“低纬度和高纬度第一年冰上方/下方海洋学特征的比较研究”Proc。

S.Taguchi: "Vertical flux of ice algae in Lagoon Saromako" Proc.9th Intl.Symp.0khotsk Sea &Sea Ice. 97-99 (1994)

S.Taguchi：“萨罗马科泻湖冰藻的垂直通量”Proc.9th Intl.Symp.0khotsk Sea

S.Taguchi: "Effect of salinity and silicate on ice algal growth in Saromako lagoon,Hokkaido,Japan" Proc.NIPR Symposium on Polar Biology. 8. 48-50 (1995)

S.Taguchi：“盐度和硅酸盐对日本北海道 Saromako 泻湖冰藻生长的影响”Proc.NIPR 极地生物学研讨会。

Taguchi, S.: ""Production and vertical flux of ice algae"" Bull. Coastal Oceanog.31 (1). 3-16 (1993)

田口，S.：“冰藻的生产和垂直通量”公牛。