Experimental errors of measurements of vertical geomagnetic gradients in the stratosphere

Tsvetkov, Yu. P.; Brekhov, Oleg; Филиппов, С. В.; Bondar, T. N.; Ivanov, Andrey; Krapivnyi, A. V.; Nikolaev, N. S.

doi:10.1134/s0016793207040123

Cited by 4 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Deviations from the vertical line of the 6 km measuring base of the gradiometer, caused by possible disturbances in the carrying airflow attaining 1500 m (hodograph), were obtained experimentally. The method of correcting these deviations (based on the data of GPS receivers and the analytical model of the main geomagnetic field) is described in Tsvetkov et al (2007b). Taking into account the height of balloon magnetic survey (30 km), only large regional structures can be reflected in the resulting anomalous magnetic field.…”

Section: Methodsmentioning

confidence: 99%

Sources of the lithosphere magnetic field based on magnetic data obtained at different heights

Tsvetkov

Novikov²,

Ivanov

et al. 2018

Earth Planets Space

View full text Add to dashboard Cite

Our investigations are based on the property that the fields of sources, whose depths are numerically equal to survey heights, are most brightly presented in the data of magnetic survey. Therefore, the magnetic field created by the upper boundary of the magnetically active layer is well presented in the data of magnetic surveys (survey heights are up to the first kilometres), whereas the geomagnetic field of the centre mass is well presented in the data of gradient magnetic surveys at heights of 20-40 km. These data were used separately for the interpretation of the depths of the upper and lower boundaries of the lithospheric magnetically active layer by spectral methods. This fact is especially valuable for estimating the positions of deep sources. For the central part of the East European platform, we obtained by spectral methods, the following values: the depth of the upper boundary of the layer is 8.5 km and that of the lower boundary of the layer is 64.3 km. The discrete localisation of the source depths along the profile is performed by the methods of converting the initial information into transformed fields, continuation upward, and reduction to the pole with the determination of singular points. The Poisson integral, representing the solution of the outer Dirichlet problem for the plane, served as a theoretical base for such an interpretation. These approaches made it possible to determine more exactly the localisation of deep sources along the profile and showed that the published magnetic maps based on aeromagnetic data do not contain in full measure the fields of deep-seated magnetic sources.

show abstract

Section: Methodsmentioning

confidence: 99%