大地测量与地球动力学2025，Vol.45Issue(6)：640-648,9.DOI:10.14075/j.jgg.2024.07.335
日本周边海域及西北太平洋重力数据分析
Marine Gravity Data Analysis of Japan's Surrounding Waters and the Northwest Pacific
摘要
Abstract
This paper collects 227 marine gravity datasets obtained by Japan through ship borne sur-veys in its surrounding waters and the northwest Pacific.Statistical analysis,visualization mapping,and correlation analysis methods are used to analyze the gravity survey situation and data quality.This paper systematically analyzes the history,spatiotemporal distribution characteristics,and quality of gravity data surveys in Japan.The results show that ship measured gravity data has good consistency with GEBCO terrain data and DTU gravity model data,while the gravity data has a correlation of 0.98 and a root mean square error of 7.7 mGal with the DTU21.This paper establishes a trajectory intersection point difference model and analyzes the data measurement accuracy using intersection point difference error.The total crossover points are 73 979 with an crossover error of 11.85 mGal,the internal crossover point are 24 822 with an crossover error of 9.56 mGal,and the external cross-over point are 49 157 with an crossover error of 12.85 mGal.The overall accuracy of the gravity data measurement accuracy is high,and the consistency is good.关键词
海洋重力/质量分析/交点差/日本周边海域Key words
marine gravity/quality analysis/crossover error/Japan's surrounding waters分类
天文与地球科学引用本文复制引用
孔敏,刘玉龙,王风帆,余佳,李维禄..日本周边海域及西北太平洋重力数据分析[J].大地测量与地球动力学,2025,45(6):640-648,9.基金项目
国家重点研发计划(2023YFC2808801,2022YFC2803602) （2023YFC2808801,2022YFC2803602）
国家自然科学基金(42206226). National Key Research and Development Program of China,No.2023YFC2808801,2022YFC2803602 （42206226）
National Nat-ural Science Foundation of China,No.42206226. （）
