Study on long-term variability of Antarctic marine environments

南极海洋环境的变化被认为与全球环境变化密切相关。日本南极研究考察队（JARE）一直在南冰洋印度海域进行海洋环境的例行观测。本项目的重点是这一部门海洋环境的长期变化，其依据是日本海洋资料监测系统和外国在这一部门的观测所积累的数据。我们首次发现了印度板块上层水温的长期上升趋势。也。表层浮游植物的活立量逐年波动较大。利用连续浮游生物记录仪（CPR）收集的数据，分析了浮游动物的变异性。CPR取样是与ANARE计划（澳大利亚国家南极研究考察）联合进行的，现在已被国际社会接受为长期监测计划的好方法。营养盐的变异是连接物理变异和生物变异的重要组成部分。印度段地表硅酸盐浓度分布不均，即富硅酸盐水和贫硅酸盐水并排分布。非均质分布模式与最近发现的南极绕极波现象密切相关，而南极绕极波被认为与大气振荡密切相关。为了了解长期变率与ACW现象之间的关系。面向过程的信息是必要的。为了获得这些信息，2001/2002年夏季开展了国际时间序列观测联合项目。研究人员利用四艘研究船重复了岩心测量，岩心测量是分析长期变异性的重要参数。首次实现了夏季11月至3月的全覆盖。在整个长期变率数据分析和时间序列观测过程中，为多学科、跨学科的国际合作方法奠定了基础。这种基本结构对于长期数据分析的进一步发展至关重要。少

Variability of Antarctic marine environments is thought to be greatly related to the global environmental change. The Japanese Antarctic Research Expedition (JARE) has been conducting the routine observations on marine environments in the Indian sector of the Antarctic Ocean. The present project focuses on the long-term variability of marine environments in this sector based on the data accumulated by the JARE observations as well as those by the foreign countries from this sector. We have firstly discovered the long-term tendency of increasing in water temperature in upper layer of the Indian sector. Also. the standing stock of surface phytoplankton fluctuated greatly year to year. Zooplankton variability was analyzed based on data collected by the CPR method (Continuous Plankton recorder). The CPR samplings were carried out jointly with the ANARE program (Australian National Antarctic Research Expedition) and is now accepted as a good method for long-term monitoring program among the … More international society. Variability of nutrient salts is an important component to link the physical and biological variability. Surface silicate concentration in the Indian sector distributes heterogeneously, namely silicate rich water and silicate poor water locate side by side. The pattern of heterogeneous distribution is closely related to the recently discovered phenomena of ACW (Antarctic Circumpolar Wave), which is thought to closely link to the atmospheric oscillation. In order to understand the relation between the long-term variability and ACW phenomena. the process oriented information is necessary. To acquire such information, the international joint program of time-series observation was carried out in 2001/2002 summer season. Four research vessels were employed to repeat the core measurements, which are important parameters to analyze the long-term variability. Full coverage of summer season from November to March was firstly accomplished. Throughout the process of data analysis of long-term variability as well as time series observation, the basis of international collaboration for the multi and inter disciplinary approach has been constructed. This fundamental structure is essential for furth er development of the long-term data analysis. Less