A high resolution lithospheric magnetic field model over China

Research areas:

• Intérieurs planétaires (2011 - 2016)

Year:

2013

Authors:

• Ou JiaMing Ou JiaMing
• Du AiMin Du AiMin
• Erwan Thébault
• Xu WenYao Xu WenYao
• Tian XiaoBo Tian XiaoBo
• Zhang TieLong Zhang TieLong

Journal:

SCIENCE CHINA-EARTH SCIENCES

Volume:

56

Number:

10

Pages:

1759-1768

Month:

October

ISSN:

1674-7313

BibTex:

@article{WOS:000324873100012, author = "Ou JiaMing Ou JiaMing and Du AiMin Du AiMin and Erwan Th{\'e}bault and Xu WenYao Xu WenYao and Tian XiaoBo Tian XiaoBo and Zhang TieLong Zhang TieLong", abstract = "CHAMP satellite data and ground-based magnetic observations are used and combined to map the lithospheric magnetic field over China by means of the revised spherical cap harmonic analysis (R-SHCA) modeling technique. The magnetic field is described to a spatial resolution of 150 km at the mean Earth{\&}#039;s radius, which represents a good compromise between the resolutions afforded by surface and satellite data. We compare the magnetic anomalies modeled at the regional scale with composite regions containing large-scale of tectonic structures. These regions, including the Tarim Basin and the Tibetan Plateau, are correlated with regional magnetic anomalies at satellite altitude but contain a significant number of small-scale and complex magnetic structures at the mean Earth{\&}#039;s radius. These magnetic anomalies are globally consistent with the known geological features in China but also offer a way to delineate the contours of the geological blocks and to discuss the connection between magnetic anomalies and the heat flow distribution in this region.", doi = "10.1007/s11430-013-4580-y", extra = "PICL", issn = "1674-7313", journal = "SCIENCE CHINA-EARTH SCIENCES", month = "OCT", number = "10", pages = "1759-1768", title = "{A} high resolution lithospheric magnetic field model over {C}hina", volume = "56", year = "2013", }

Abstract:

CHAMP satellite data and ground-based magnetic observations are used and combined to map the lithospheric magnetic field over China by means of the revised spherical cap harmonic analysis (R-SHCA) modeling technique. The magnetic field is described to a spatial resolution of 150 km at the mean Earth's radius, which represents a good compromise between the resolutions afforded by surface and satellite data. We compare the magnetic anomalies modeled at the regional scale with composite regions containing large-scale of tectonic structures. These regions, including the Tarim Basin and the Tibetan Plateau, are correlated with regional magnetic anomalies at satellite altitude but contain a significant number of small-scale and complex magnetic structures at the mean Earth's radius. These magnetic anomalies are globally consistent with the known geological features in China but also offer a way to delineate the contours of the geological blocks and to discuss the connection between magnetic anomalies and the heat flow distribution in this region.