南极和北极水深模型数据来源分析和对比  

Analysis and comparison of data sources for antarctic and arctic seafloor topography models

作　　者：胡兴猛 范雕 裴宪勇 杜斌 HU Xingmeng;FAN Diao;PEI Xianyong;DU Bin(Institute of Geospatial Information,Information Engineering University,Zhengzhou 450001,China)

机构地区：[1]信息工程大学地理空间信息学院,河南郑州450001

出　　处：《海洋测绘》2024年第6期24-29,共6页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(42204009;42174007)。

摘　　要：极地作为我国战略发展新疆域,分析掌握其水下地形特征和水下地形数据资料类别成分对于更好地了解、探索、利用极地具有明显现实和潜在意义。依托IBCSO V2.0和IBCAO V4.2模型定量分析了南北极区域水下地形总体数字特征、不同纬度带、不同经度带水下地形变化特点,研究比较了极地区域不同类型水下地形数据贡献程度差异和分布规律。分析结果表明,南极水域总体水深明显深于北极水域,而两极水域水下地形起伏剧烈程度大体相当。随着纬度增加,南极水域水深总体逐渐加深,而北极水域水深总体逐渐变浅。北极水下地形模型主要来源为插值算法获取水深数据、声学水深测量数据和融合直接测量水深建模数据,总体贡献占比达97.80%。相比北极水域,南极水域水下地形数据加入了数量庞大的重力预测水下地形数据,约占南极水域水下地形数据总量的四分之一。Polar regions are new frontiers of the development.Analyzing and mastering the characteristics and types of seafloor topography data in the polar region has potential significance for understanding,exploring,and utilizing the polar region.Based on the data provided by IBCSO V2.O model(the International Bathymetric Chart of the Southern Ocean)and IBCAO V4.2 model(the International Bathymetric Chart of the Arctic Ocean),we quantitatively analyzed the seafloor topography characteristics in the regions,including Antarctic regions,Arctic regions,different longitude zones and different latitude zones.Then,we compared the differences in contribution levels and distribution patterns of different seafloor topography modeling data.The results indicate that the overall depth of water in the Antarctic waters is significantly deeper than that in the Arctic waters,while the complexity of seafloor topography is generally equivalent.As latitude increases,the overall depth of water in Antarctic waters gradually deepens,while the overall depth of water in Arctic waters gradually shallows.The main sources of IBCAO V4.2 model are interpolated depth based on a computer algorithm,multibeam/single beam,combination of direct measurement methods,with an overall contribution of 97.80%.Compared to Arctic waters,the seafloor topography data in Antarctic waters includes a large amount of predicted bathymetry based on satellite-derived gravity data,accounting for about a quarter of the total seafloor topography data in Antarctic waters.

关 键 词：海洋测绘 南极水域 北极水域 水下地形 IBCAO V4.2模型 IBCSO V2.0模型 

分 类 号：P229.1[天文地球—大地测量学与测量工程]