文献类型：期刊文献

中文题名：苏拉威西海海面高度多频率季节内变化及其机制分析

英文题名：Multi-frequency variability and mechanism of intra-seasonal sea surface height in the Sulawesi Sea

作者：毛志榜[1,2,3];王露[1,4];李君益[1,2,3];谢玲玲[1,2,3];郑全安[5]

机构：[1]广东海洋大学海洋与气象学院,广东湛江524088;[2]陆架及深远海气候、资源与环境广东省高等学校重点实验室,广东湛江524088;[3]自然资源部空间海洋遥感与应用重点实验室,北京100081;[4]海军士官学校航海系,安徽蚌埠233012;[5]美国马里兰大学大气与海洋科学系,马里兰州大学市20742

年份：2024

卷号：46

期号：2

起止页码：14

中文期刊名：海洋学报

收录：北大核心2023、CSTPCD、、CSCD2023_2024、北大核心、CSCD

基金：国家重点研发计划项目(2022YFC3104805);国家自然科学基金项目(42276019,42176184);广东普通高校创新团队项目(2019KCXTF021,2023KCXTD015);广东省冲一流专项资金项目(231419012,231919030);粤西热带海洋生态环境野外科学观测研究站项目。

语种：中文

中文关键词：苏拉威西海;多频率季节内变化;时空特征;罗斯贝标准模态;固有振荡

外文关键词：Sulawesi Sea;multi-frequency intra-seasonal variation;spatiotemporal characteristics;Rossby normal modes;inherent oscillation

中文摘要：本文利用1993-2022年卫星高度计观测数据,分析苏拉威西海海面高度多频率季节内变化信号的时空特征,利用罗斯贝标准模理论给出动力解释。谱分析显示,苏拉威西海海面高度变化存在很强的30~90 d的季节内信号,其平均功率谱密度为半年内信号平均功率谱密度的13倍。这些季节内信号具有离散、不连续的谱峰周期,其中54.0 d和64.4 d的峰值最大,分别为30~90 d信号平均谱值的28倍和23倍。罗斯贝标准模态理论分析显示,近封闭的苏拉威西深海盆存在离散的罗斯贝标准模态。卫星高度计观测的季节内变化与罗斯贝标准模态结果的二维空间结构演化、周期以及西传速度一致,罗斯贝标准模态解的叠加呈现出与海面高度变化相似的方差分布,这说明苏拉威西海海盆的固有振荡是其季节内变化特征形成的重要机制之一。

外文摘要：Based on the satellite altimeter observation data from 1993 to 2022,this paper analyzes the temporal and spatial characteristics of the multi frequency seasonal variation signal of sea surface height in the Sulawesi sea,and gives the dynamic interpretation by using Rossby standard mode theory.The spectral analysis shows that there is a strong intra-seasonal signal of 30-90 days in the sea surface height variation of Sulawesi sea,and its average power spectral density is 13 times of the average power spectral density of the signal in half a year.These seasonal signals have discrete and discontinuous spectral peak periods,and the peaks of 54.0 d and 64.4 d are the largest,which are 28 times and 23 times of the signal of 30-90 days,respectively.The theoretical analysis shows that the existence of Rossby standard modes in the nearly closed Sulawesi deep-sea basin.The seasonal variation observed by satellite altimeter is consistent with the two-dimensional spatial structure evolution,period and westward propagation velocity of Rossby standard mode results,the superposition of Rossby standard mode solutions presents a variance distribution similar to the sea surface height variation field.This shows that the inherent oscillation of Sulawesi Sea basin is one of the important mechanisms that contribute to its intra-seasonal variation.