Interannual fluctuations of the atmospheric pressure, sea surface temperature, and chlorophylla of the Arabian Sea
Interannual fluctuations of the atmospheric pressure, sea surface temperature, and chlorophylla of the Arabian Sea
复制标题
阿拉伯海大气压、海面温度和叶绿素的年际波动
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
A. A. Sizov
中科院分区：
文献类型：
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作者：
V. Eremeev;A. N. Jukov;N. E. Lebedev;S. Piontkovski;A. A. Sizov
为了估计年际变化的总体趋势(1985-2008年)，将阿拉伯海划分为四个区域，分析了遥感大气压力、海表面温度和叶绿素a浓度。在数据分析中，采用了主音与泛音之间存在共振相互作用的复音振子层次系统的复音断波振子模型。根据分形波的方法，光谱特征应该形成封闭结构体系。通过内光谱分析对这些特征进行了估计。在研究期间，观察到大气低压带(沿巴基斯坦和印度海岸)的扩张和海面温度的上升(~0.3-0.6oc)，同时伴随着叶绿素-a浓度的微弱下降(~-0.1-0.2mgm-3)。被评估的趋势被认为是北半球一些物理和生物变量的低频波动的要素，其周期为60-70年。根据阿拉伯海西部沉积物岩心的古生物数据，认为这种波动的正阶段将在未来5-7年结束，之后阿拉伯海将进入负印度洋偶极子阶段，持续25-30年，这可能伴随着生物生产力的适度增加。
In order to estimate general trends of interannual variability (in 1985-2008), the Arabian Sea was divided into the four regions for which remotely sensed atmospheric pressure, sea surface temperature, and chlorophyll-a concentration were analyzed. In data analysis, the model of polyphonic fractalwave vibrator representing the hierarchical system of polyphonic oscillators with the resonance interaction between major tones and overtones was employed. In terms of the fractal-wave approach, the spectral characteristics should form the system of enclosed structures. These characteristics were estimated by the internal-spectral analysis. For the studied period, the expansion of the atmospheric low pressure zone (along the Pakistani and Indian coast) and rising sea surface temperatures (~ 0.3-0.6oC) accompanied by a weak decline (~ -0.1- 0.2 mg m-3) in chlorophyll-a concentration were noticed. The trends evaluated were proposed to be the elements of lowfrequent fluctuation shaving a period of ~ 60-70 years, reported earlier for some physical and biological variables for the northern hemisphere. It was assumed that a positive phase of this fluctuation will be over in the next 5-7 years after which the Arabian Sea will enter the phase of negative Indian Ocean Dipole, lasting the next 25-30 years, which might be accompanied by a moderate increase in biological productivity- as it had happened before, according to the paleontological data on sediment cores from the western Arabian Sea.