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OALib Journal期刊
ISSN: 2333-9721
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基于instant数据对itf流出海峡海流的功率谱分析
Keywords: 努沙登加拉层结及输运的国际联合观测计划(instant),印度尼西亚贯穿流(itf),功率谱分析
Abstract:
？利用instant(theinternationalnusantarastratificationandtransport,努沙登加拉层结及输运的国际联合观测计划)计划所测得的流场数据,研究了itf(indonesianthroughflow,印度尼西亚贯穿流)在主要流出海峡——龙目海峡(lombokstrait)、翁拜海峡(ombaistrait)和帝汶海峡(timorpassage)随深度和时间的变化,并对表层和温跃层的流速进行了功率谱分析。研究发现,itf流场在龙目和翁拜海峡表层有显著的年循环,在季风转换期间各个层次上海流都会出现反转,从印度洋流向海峡内;而帝汶海峡在300m以下出现反转流。3个海峡的表层流都以年周期为主,温跃层的流以半年变化为主,并且都有丰富的季节内变化。高频部分,除了在龙目海峡表层k1日潮占优外,各海峡均以m2半日潮为主。
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