The southern edge of cratonic North America: Evidence from new magnetic satellite observations

M. Purucker; M. Mandea; G. Hulot; Nils Olsen; B. Langlais

The southern edge of cratonic North America: Evidence from new magnetic satellite observations

M. Purucker, M. Mandea, G. Hulot, Nils Olsen, B. Langlais

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Abstract

A global model is developed for both induced and remanent magnetizations in the terrestrial lithosphere. The model is compared with, and well-described by, Ørsted satellite observations. Interpretation of the observations over North America suggests that the large total field anomalies, associated with spherical harmonic degrees 15-26 and centered over Kentucky and the south-central United States, are the manifestations of the magnetic edges of the southern boundaries of cratonic North America. The techniques and models developed here may be of use in defining other cratonic boundaries.

Original language	English
Journal	Geophysical Research Letters
Volume	29
Issue number	15
ISSN	0094-8276
Publication status	Published - 2002

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title = "The southern edge of cratonic North America: Evidence from new magnetic satellite observations",

abstract = "A global model is developed for both induced and remanent magnetizations in the terrestrial lithosphere. The model is compared with, and well-described by, {\O}rsted satellite observations. Interpretation of the observations over North America suggests that the large total field anomalies, associated with spherical harmonic degrees 15-26 and centered over Kentucky and the south-central United States, are the manifestations of the magnetic edges of the southern boundaries of cratonic North America. The techniques and models developed here may be of use in defining other cratonic boundaries.",

author = "M. Purucker and M. Mandea and G. Hulot and Nils Olsen and B. Langlais",

year = "2002",

language = "English",

volume = "29",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "Wiley-Blackwell",

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T1 - The southern edge of cratonic North America: Evidence from new magnetic satellite observations

AU - Purucker, M.

AU - Mandea, M.

AU - Hulot, G.

AU - Olsen, Nils

AU - Langlais, B.

PY - 2002

Y1 - 2002

N2 - A global model is developed for both induced and remanent magnetizations in the terrestrial lithosphere. The model is compared with, and well-described by, Ørsted satellite observations. Interpretation of the observations over North America suggests that the large total field anomalies, associated with spherical harmonic degrees 15-26 and centered over Kentucky and the south-central United States, are the manifestations of the magnetic edges of the southern boundaries of cratonic North America. The techniques and models developed here may be of use in defining other cratonic boundaries.

AB - A global model is developed for both induced and remanent magnetizations in the terrestrial lithosphere. The model is compared with, and well-described by, Ørsted satellite observations. Interpretation of the observations over North America suggests that the large total field anomalies, associated with spherical harmonic degrees 15-26 and centered over Kentucky and the south-central United States, are the manifestations of the magnetic edges of the southern boundaries of cratonic North America. The techniques and models developed here may be of use in defining other cratonic boundaries.

M3 - Journal article

SN - 0094-8276

VL - 29

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 15

ER -

The southern edge of cratonic North America: Evidence from new magnetic satellite observations

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