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南极冰盖的扩张和后退直接影响了全球气候和海平面变化,由于南极地理位置特殊,研究其海洋环境变化是全球气候变化研究的重要内容。本文主要借助模型模拟以及遥感反演的方法,对东南极普里兹湾及周边区域海洋环境要素(风、海冰、海流、海表温度以及海表叶绿素a浓度)的变化规律及其影响因素进行初步分析。受地形、太阳辐射、极地高气压强度的影响,研究区风场表现出季节性变化特征;区域海冰受到海表温度、风、地形以及上升流的影响,具有冻结期(39月)和消融期(10月~次年2月)交替变化特征;海流的分布特征受控于地形、风、海冰分布以及冰融水注入等因素;海洋初级生产力受太阳辐射、营养盐、水体稳定性影响较大,在研究区主要表现为深层水涌升、海冰融化、海表温度变化对海洋表层浮游生物生长起到直接控制作用。最后,本文结合普里兹湾海洋表层沉积物中有机质分布、沉积物粒度分布特征分析了研究区海洋环境要素对沉积作用的影响。
Abstract：The expansion and retreat of the Antarctic ice sheet have a direct impact on climate and sea level,which also altered ocean circulation and controlled inter-hemisphere heat transport.The authors mainly uses model simulation and remote sensing inversion to analyze the variation of marine environment(e.g.,wind,sea ice,current,sea surface temperature(SST),ChlorophyII a)and the influencing factors in Prydz Bay and the surroundings.Under the influence of terrain,solar radiation and polar pressure intensity,the wind field shows seasonal variation.The regional sea ice is affected by sea surface temperature,wind,topography and upwelling,which characterized by alternating freezing(March-September)and ablation(October-February)period.The distribution of current is controlled by the distribution of the terrain,wind,sea ice and ice melt water.The primary productivity of the ocean is affected largely by solar radiation,nutrient and water stability.It represents the upwelling of deep seawater,sea ice melting and sea surface temperature in the study area.In this paper,we analyzed the distribution characteristics of organic matter and particle size,and the influence of marine environmental factors on sedimentary effects in Prydz Bay.
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基本信息:
DOI：10.16441/j.cnki.hdxb.20170288
中图分类号:P467;P73;X145
引用信息:
[1]王丽艳,李广雪,纪风颖,等.普里兹湾海洋环境季节性变化及其影响因素研究[J],2018,48(10):47-59.DOI:10.16441/j.cnki.hdxb.20170288.
基金信息:
中国地质调查局我国海域关键地质问题跟踪分析与研究专题项目;; 国家自然科学基金重点项目(41030856);; 泰山学者建设工程专项项目资助~~