物探与化探2023，Vol.47Issue(6)：1410-1416,7.DOI:10.11720/wtyht.2023.1558
地球磁异常EMAG2v3与全球重力数据库V29数据质量综合评估
An integrated data quality evaluation of Earth magnetic anomaly grid EMAG2v3 and global gravimetric database V29:A case study of the Aegir ridge in the Arctic
摘要
Abstract
To evaluate the qualities of the marine magnetic data in the Earth magnetic anomaly grid EMAG2v3 and the marine gravity data in global gravimetric database V29,this study selected the magnetic and gravity data of the Aegir axial rift and its adjacent areas within a range of about 150 km from EMAG2v3 and V29,respectively to conduct comparative research.This study systematically col-lected the anomaly data of the study area from EMAG2v3 and V29 for comparison with the measured gravity and magnetic data of the study area.First,this study gridded and whitened the EMAG2v3 data,V29 data,and measured gravity and magnetic anomaly data to obtain the corresponding images.Then,this study analyzed the correlations between the EMAG2v3 data and the shipborne magnetic da-ta and between the V29 data and the shipborne gravity data,obtaining the magnetic and gravity correlation diagrams and corresponding correlation coefficients.By comparing the correlation coefficients and differences between the two kinds of magnetic data and the two kinds of gravity data,this study conducted an integrated evaluation of magnetic the gravity data of the study area from EMAG2v3 and V29,respectively.As indicated by the results,EMAG2v3 incorporates many shipborne magnetic data,with the shipborne magnetic a-nomaly data showing higher quality than the data from the EMAG2v3 for areas with dense survey lines.The results also show that the shipborne gravity anomalies showed roughly the same variations as those from V29,indicating the same lateral resolution of the two types of anomaly data.关键词
数据质量评估/重力数据库V29/地球磁异常EMAG2v3/船测磁力/船测重力Key words
data quality evaluation/gravimetric database V29/Earth's magnetic anomaly grid EMAG2v3/shipborne magnetic force/shipborne gravity分类
天文与地球科学引用本文复制引用
张冕,张春灌,赵敏,钟振华,袁炳强,周磊,韩梅..地球磁异常EMAG2v3与全球重力数据库V29数据质量综合评估[J].物探与化探,2023,47(6):1410-1416,7.基金项目
国家自然科学基金面上项目(42172224) （42172224）
陕西省自然科学基础研究计划项目(2021JM-401) （2021JM-401）
