Bulgarian Academy of Sciences
Geophysical Institute

Brief description of content | Available resource formats | Access | Contact person |

Information resource title:
Ionospheric characteristics

Brief description of content:
Critical frequency and height of ionospheric layers – hourly values

Available resource formats:

• Hard copy

Data original language:

• Bulgarian

Languages for information keeping:

• Bulgarian

Publications:

• Bulgarian Geophysical Journal

Data access:
An official request must be made to the Director of the Geophysical Institute, specifying the required information and the need for this information.

Contact person:  Ass. Prof. Ivan Kutiev

Position	Head of Ionosphere Section
Language skills	English, Russian
Town/Village-mail code	Sofia – 1113
Street	Akademic Georgi Bonchev Str.
Telephone	+359 2 9713025
Fax	(+ 359 2) 634593
E-mail	ivan.kutiev@geophys.bas.bg
URL	http://www.geophys.bas.bg