View More View Less
  • 1 Geodetic and Geophysical Research, Institute of the Hungarian Academy of Sciences H-9400 Sopron, POB 5, Hungary
  • | 2 Geodetic and Geophysical Research, Institute of the Hungarian Academy of Sciences H-9400 Sopron, POB 5, Hungary
Restricted access

Using data of Es parameters obtained at a high mid-latitude station in Germany (Juliusruh; geogr. lat.: 54º 38' daily and seasonal variations were derived and certain characteristics of these variations have been analysed during a period of changing solar activity. It has been confirmed that diurnal maxima appearing both in foEs and fbEs are generally higher around solar activity maximum than around the minimum. Seasonal maxima appearing in summer are also higher around solar activity maximum than towards the minimum. The daily variation of h'Es showed two maxima: one in the morning and another in the afternoon. The seasonal maximum of h'Es generally appeared in April or May while the minimum in October or November. All these results confirm earlier findings derived for a station in Hungary (Békéscsaba). The present study particularly intends to show changes in the diurnal variation of Es parameters associated with geomagnetic disturbances. The difference between foEs and fbEs might  be used as indicator of the transparency of the Es layer, and this quantity seems to increase on days with strong geomagnetic storms. Analysing the transparency based on the maximum values appearing in the daily variations of foEs and fbEs, a rather high quantity has been derived for stormy days in the year 1971. Actually, in this year, the daily variation of h'Es was also characterised by an extremely high afternoon maximum. The wind-shear theory is generally suitable for explaining the generation of sporadic E layer at mid-latitude. The present results are not inconsistent with the points of this theory.

  • Bencze P 1969: Pure and applied Geophysics, 75, 167--174.

    () 75 Pure and applied Geophysics : 167 -174.

  • Bencze P 1970: Acta Geod. Geoph. Mont. Hung., 5, 223--231.

    () 5 Acta Geod. Geoph. Mont. Hung : 223 -231.

  • Bencze P 1983: INAG Bulletin, 40/41, 12.

    () 40/41 INAG Bulletin : 12.

  • Bencze P, Märcz F 2002: Acta Geod. Geoph. Hung., 37, 227--238.

    () 37 Acta Geod. Geoph. Hung : 227 -238.

  • Emmert J T, Fejer B G, Shephard G G, Solheim B H 2002: J. Geophys. Res., 107, A12, SIA 19.

    () 107 J. Geophys. Res : A12.

  • Forbes J 2000: J. Atm. Solar-Terr. Phys., 62, 1603--1621.

    () 62 J. Atm. Solar-Terr. Phys : 1603 -1621.

  • Heisler L H, Whitehead J D 1960: Nature, 187, 676--677.

    () 187 Nature : 676 -677.

  • Märcz F 1986: Acta Geod. Geoph. Hung., 21, 201--207.

    () 21 Acta Geod. Geoph. Hung : 201 -207.

  • Rottman G 1999: J. Atm. Solar-Terr. Phys., 61, 37--44.

    () 61 J. Atm. Solar-Terr. Phys : 37 -44.

  • Whitehead J D 1961: J. Atm. Terr. Phys., 20, 49--58.

    () 20 J. Atm. Terr. Phys : 49 -58.

  • Smith R W 2000: J. Atm. Solar-Terr. Phys., 62, 1623--1628.

    () 62 J. Atm. Solar-Terr. Phys : 1623 -1628.

AGG Editorial Office
Address: P.O. Box 5, H-9401 Sopron, Hungary
Phone: (36 99) 508 340
Fax: (36 99) 508 355
E-mail: actagg@ggki.hu

  • Impact Factor (2019): 0.909
  • Scimago Journal Rank (2019): 0.337
  • SJR Hirsch-Index (2019): 18
  • SJR Quartile Score (2019): Q3 Building and Construction
  • SJR Quartile Score (2019): Q3 Geology
  • SJR Quartile Score (2019): Q3 Geophysics
  • Impact Factor (2018): 0.942
  • Scimago Journal Rank (2018): 0.314
  • SJR Hirsch-Index (2018): 17
  • SJR Quartile Score (2018): Q3 Geology
  • SJR Quartile Score (2018): Q3 Geophysics

For subscription options, please visit the website of Springer Nature.

Acta Geodaetica et Geophysica
Language English
Size B5
Year of
Foundation
2013
Volumes
per Year
1
Issues
per Year
4
Founder Magyar Tudományos Akadémia
Founder's
Address
H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó Springer
Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 2213-5812 (Print)
ISSN 2213-5820 (Online)

Monthly Content Usage

Abstract Views Full Text Views PDF Downloads
Jun 2021 1 0 0
Jul 2021 2 0 0
Aug 2021 3 0 0
Sep 2021 2 0 0
Oct 2021 3 0 0
Nov 2021 3 0 0
Dec 2021 0 0 0