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Thermal Front Variability during the El Nino Southern Oscillation (ENSO) in the Banda Sea Using Remotely Sensed Data 被引量:1
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作者 Achmad Fachruddin Syah Siti Sholehah 《Journal of Marine Science》 2021年第2期1-7,共7页
The Banda Sea is one of the routes of global ocean currents that move from the Pacific Ocean to the Indian Ocean.This flow is known as Indonesian Through Flow(ITF).The Banda Sea is an area where warm and cold water ma... The Banda Sea is one of the routes of global ocean currents that move from the Pacific Ocean to the Indian Ocean.This flow is known as Indonesian Through Flow(ITF).The Banda Sea is an area where warm and cold water masses meet,so it has the potential for a thermal front.This study aims to understand the variability of thermal front in the Banda Sea during the El Nino Southern Oscillation period.Southern Oscillation Index(SOI)and sea surface temperature(SST)data in 2010,2012 and 2015 were used in this study.SOI data was obtained from http://www.bom.gov.au and SST data were obtained from http://oceancolor.gsfc.nasa.gov.The data were processed using ArcGIS 10.4 software and Ms.Office 2013.The results showed the La Nina period occurs in July-December 2010,the Normal period occurs in July-December 2012,and the El Nino period occurs in May-October 2015.In general,during La Nina,the mean SST has higher values than the other periods.On the other hand,the highest thermal front occurs during the El Niño period(10584),followed by the Normal period(7544)and the lowest during the La Niña period(5961),respectively. 展开更多
关键词 el nino la nina normal Sea surface temperature
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不同强度El Nio的衰减过程.Ⅰ,强El Nio的衰减过程 被引量:12
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作者 刘长征 薛峰 《地球物理学报》 SCIE EI CAS CSCD 北大核心 2010年第1期39-48,共10页
将1951~2004年期间的12次El Nio事件分为强、中等、较弱和弱4类,结果发现,强和较弱El Nio衰减进入La Nia,但是中等和弱El Nio衰减进入平常态.因此,El Nio的衰减结果与自身强度之间存在密切的非线性关系.进一步的研究表明,负... 将1951~2004年期间的12次El Nio事件分为强、中等、较弱和弱4类,结果发现,强和较弱El Nio衰减进入La Nia,但是中等和弱El Nio衰减进入平常态.因此,El Nio的衰减结果与自身强度之间存在密切的非线性关系.进一步的研究表明,负异常信号自西太平洋向中东太平洋的东传主导了强El Nio事件向La Nia的转变过程,其具体动力过程类似于西太平洋振子理论.热带西北太平洋(WNP)大气异常反气旋在强El Nio位相转变中起核心作用,它的维持和缓慢东移是赤道东风异常维持和发展的原因,而后者通过激发Kelvin波导致了ENSO从El Nio向 La Nia的转变. 展开更多
关键词 el nino 衰减 la nina 平常态
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