Depression of the ULF geomagnetic pulsation related to ionospheric irregularities

Title (Dublin Core)

Description (Dublin Core)

We consider a depression in intensity of ULF magnetic pulsations, which is observed on the ground surface due to appearance of the irregularities in the ionosphere. It is supposed that oblique Alfven waves in the ULF frequency range are downgoing from the magnetosphere and the horizontal irregularities of ionospheric conductivity are created by upgoing atmospheric gravity waves from seismic source. Unlike the companion paper by Molchanov et al. (2003), we used a simple model of the ionospheric layer but took into consideration the lateral inhomogeneity of the perturbation region in the ionosphere. It is shown that ULF intensity could be essentially decreased for frequencies f = 0.001-0.1 Hz at nighttime but the change is negligible at daytime in coincidence with observational results.

Creator (Dublin Core)

O. A. Molchanov

M. Hayakawa

A. Yu. Schekotov

E. N. Fedorov

V. M. Sorokin

Subject (Dublin Core)

ULF

ionosphere

Alfven

seismicity

Meteorology. Climatology

QC851-999

Geophysics. Cosmic physics

QC801-809

Publisher (Dublin Core)

Istituto Nazionale di Geofisica e Vulcanologia (INGV)

Date (Dublin Core)

2004-06-01T00:00:00Z

Type (Dublin Core)

article

Identifier (Dublin Core)

10.4401/ag-3271

1593-5213

2037-416X

https://doaj.org/article/322a2743df554ebab5bf64294758986b

Source (Dublin Core)

Annals of Geophysics, Vol 47, Iss 1 (2004)

Language (Dublin Core)

EN

Relation (Dublin Core)

http://www.annalsofgeophysics.eu/index.php/annals/article/view/3271

https://doaj.org/toc/1593-5213

https://doaj.org/toc/2037-416X

Provenance (Dublin Core)

Journal Licence: CC BY

Item