Resolution of direction of oceanic magnetic lineations by the sixth-generation lithospheric magnetic field model from CHAMP satellite magnetic measurements

被引：132

作者：

Maus, S. ^{[1
,2
]}

Yin, F. ^{[3
]}

Luehr, H. ^{[3
]}

Manoj, C. ^{[2
]}

Rother, M. ^{[3
]}

Rauberg, J. ^{[3
]}

Michaelis, I. ^{[3
]}

Stolle, C. ^{[3
]}

Mueller, R. D. ^{[4
]}

机构：

[1] NOAA, Natl Geophys Data Ctr, NOAA E GC1, Boulder, CO 80305 USA

[2] Univ Colorado, CIRES, Boulder, CO 80309 USA

[3] Geoforschungszentrum Potsdam, D-14473 Potsdam, Germany

[4] Univ Sydney, Sch Geosci, Sydney, NSW 2006, Australia

来源：

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS | 2008年 / 9卷

关键词：

lithospheric field; crustal field; satellite geomagnetism; ocean spreading anomalies; magnetic anomalies;

D O I：

10.1029/2008GC001949

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The CHAMP satellite continues to provide highly accurate magnetic field measurements from decreasing orbital altitudes (< 350 km) at solar minimum conditions. Using the latest 4 years (2004 -2007) of readings from the CHAMP fluxgate magnetometer, including an improved scalar data product, we have estimated the lithospheric magnetic field to spherical harmonic degree 120, corresponding to 333 km wavelength resolution. The data were found to be sensitive to crustal field variations up to degree 150 (down to 266 km wavelength), but a clean separation of the lithospheric signal from ionospheric and magnetospheric noise sources was achieved only to degree 120. This new MF6 model is the first satellite-based magnetic model to resolve the direction of oceanic magnetic lineations, revealing the age structure of oceanic crust.

引用

页数：10

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