Secular variation of the geomagnetic field in Europe for the 1985—2005 years
Saved in:
| Published in: | Геофизический журнал |
|---|---|
| Date: | 2010 |
| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
Інститут геофізики ім. С.I. Субботіна НАН України
2010
|
| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/101856 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Secular variation of the geomagnetic field in Europe for the 1985—2005 years / V. Maksymchuk, Yu. Horodysky, D. Marchenko // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 91-94. — Бібліогр.: 5 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1860261098909859840 |
|---|---|
| author | Maksymchuk, V. Horodysky, Yu. Marchenko, D. |
| author_facet | Maksymchuk, V. Horodysky, Yu. Marchenko, D. |
| citation_txt | Secular variation of the geomagnetic field in Europe for the 1985—2005 years / V. Maksymchuk, Yu. Horodysky, D. Marchenko // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 91-94. — Бібліогр.: 5 назв. — англ. |
| collection | DSpace DC |
| container_title | Геофизический журнал |
| first_indexed | 2025-12-07T18:55:44Z |
| format | Article |
| fulltext |
������������������� �!�"#�$%�&'#�'()( 3)
+,� ��-.�,/�0
��.������1
�,
��0.�0��0���,������ �����
��
Secular variation of the geomagnetic field in Europe for the
1985—2005 years
V. Maksymchuk, Yu. Horodysky, D. Marchenko, 2010
Carpathian Branch of Institute of Geophysics, National Academy of Sciences of Ukraine, Lvov, Ukraine
vmaksymchuk@cb-igph.lviv.ua
Secular variation (SV) is a typical feature of the
Earth magnetic field. Doing the magnetic surveys
for the different purposes, creating the maps of the
anomalous magnetic field, it is very important take
into account the knowledge about the time spatial
structure of the Earth magnetic field. Geomagnetic
observatories and data measured at the repeat sta-
tions (SV points) are offers the main source of
information about the time spatial structure of SV.
Using this data, constructed maps of the secular
variations of geomagnetic field gave us imaginations
about the morphology of SV in studied regions and
theirs comparison at different time let us to detect
the focuses of the secular variations and investi-
gate theirs kinematics. Auspicious conditions take
place in the European region for the detail study of
the SV according to the huge network of the mag-
netic observatories.
Spatial structure of the SV in European area is
demonstrated in such papers as [Orlov et al., 1968;
Pushkov, 1976; Maksymchuk et al., 2001] in which
shown that the very dynamic structure of SV attend
in the second part of XX century in Europe: disinteg-
ration of the Caspian (Iran) SV focus in 60th and
formation of the new SV focus in central Europe in
70th [Maksymchuk et al., 2001; Maksymchuk,
2002].
The main goal of this work — compilation of the
new maps of the secular variation of geomagnetic
field for the European region in the beginning of XXI
century and investigations of the characteristics of
time spatial structure on the basis of these new
maps.
As we can see from the Fig. 1—2 occurrence of
the global positive focus with the epicenter in the
Apennine — Balkan region is the main feature of
the secular variation of the geomagnetic field during
the 1985 — 1995 years in Europe. According to the
data from IGRF-10 global magnetic model the in-
tensity of this focus by Z-component come to the
24 nT/y during the 1985—1990 years and 22 nT/y
during the 1990—1995 years. This focus was con-
centrated basically in all part of Central and Wes-
tern Europe.
Analyzing the data from the magnetic observa-
tories we come to conclusions that this SV focus in
comparison to IGRF data not such strong but also
take place in European continent. However, its struc-
�������
����
���� ����
3' ������������������� �!�"#�$%�&'#�'()(
Fig. 1. Secular variation form 1985 to1990 of Z-component: a — IGRF-10 model, b — magnetic observatories data.
Fig. 2. Secular variation from 1990 to 1995 of Z-component: a — IGRF-10 model, b — magnetic observatories data.
������������������� �!�"#�$%�&'#�'()( 3&
+,� ��-.�,/�0
��.������1
�,
��0.�0��0���,������ �����
��
Fig. 3. Secular variation from 1995 to 2000 of Z-component: a — IGRF-10 model, b — magnetic observatories data.
Fig. 4. Secular variation from 2000 to 2005 of Z-component: a — IGRF-10 model, b —magnetic observatories data.
�������
����
���� ����
3" ������������������� �!�"#�$%�&'#�'()(
ture more complicated particularly for the 1990—
1995 years (Fig. 2, b), where its intensity notice-
ably lower (18 nT/y) in comparison to IGRF-10 model
(22 nT/y) and epicenter is located in Poland region.
Different changes in SV structure happen in
1995—2005 years. In fact during the 1995—2000
years the Balkan SV focus is cease to be effective.
In the area of Black Sea the global minimum of se-
cular variation (16 nT/y) from IGRF data become
apparent (Fig. 3, a). The central and western part of
Europe is under the influence of the global focus in
the north-west part of Europe. Instead of IGRF model
the global minimum according to the magnetic ob-
servatories is absent in the Black Sea region, while
the SV structure in the area of Rumania and East
Ukraine sophisticated by the regional minimum
(22 nT/y, Fig. 3, b).
During the 2000—2005 years IGRF — 10 model
do not contain particular anomalies in the SV struc-
ture (Fig. 4, a). Secular variations field slightly un-
varying decrease in the north — west and western
direction. However, magnetic observatories data
more expressive indicate that the morphology of the
SV field allocate the global focus in the north-west
part of Europe (Fig. 4, b).
For the X, I and D components secular variation
structure do not disagree with the structure of Z-
omponent. In general, comparison of the SV struc-
tures based on IGRF model and observatories data
indicate about its adequacy. In western part of Europe
the differences much higher than in the eastern part
[Maksymchuk et al., 2010].
For our opinion we have grounds to maintain that
the SV focus which toke place in the Europe during
the 70th in the end of XX century was collapsed.
Time of its existence do not exceed more than 25—
30 years. By the spatial and time characteristics it
could be referred to the short periodic SV focus and
its nature can be related to the magnetic field ge-
neration in the Earth kernel.
We would like to express our sincerely thanks
to the National fund of the fundamental researches
which make the foundation in the frame of scientific
project “Secular variation of the geomagne������
�
���
���� ��������������
Maksymchuk V. Time spatial structure of the secular
variation of geomagnetic field in Europe. — Lvov:
Scientific association of Shevchenko (Geophysics),
2002. — P. 57—67.
Maksymchuk V., Gorodysky Yu., Kyznecova V. Dy-
namic of the anomalous Earth magnetic field. —
Lvov: Eurosvit, 2001. — 308 p.
Maksymchuk V., Gorodysky Yu., Marchenko D. Time
spatial structure of the secular geomagnetic varia-
tions in European region in the beginning of the
References
XXI sc. // IXth International Conference on Geoinfor-
matics. — Theoretical and Applied Aspects (11—
14 May), 2010. — Kiev, Ukraine, 2010.
Orlov V., Ivchenko M., Bazarganov A., Kolomuiceva G.
Secular variation of the geomagnetic field during
the 1960—1965 years. — Moscow: IZMIRAN, 1968.
— 68 p.
Pushkov A.�� ��
������������������ � �!� � ������
�
"�# �������
�!� � ������������ �!� � ��������
���$ �!� ��% #��&�'()���&���')��&�*��(&'��
|
| id | nasplib_isofts_kiev_ua-123456789-101856 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0203-3100 |
| language | English |
| last_indexed | 2025-12-07T18:55:44Z |
| publishDate | 2010 |
| publisher | Інститут геофізики ім. С.I. Субботіна НАН України |
| record_format | dspace |
| spelling | Maksymchuk, V. Horodysky, Yu. Marchenko, D. 2016-06-08T14:11:00Z 2016-06-08T14:11:00Z 2010 Secular variation of the geomagnetic field in Europe for the 1985—2005 years / V. Maksymchuk, Yu. Horodysky, D. Marchenko // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 91-94. — Бібліогр.: 5 назв. — англ. 0203-3100 https://nasplib.isofts.kiev.ua/handle/123456789/101856 We would like to express our sincerely thanks
 to the National fund of the fundamental researches
 which make the foundation in the frame of scientific
 project “Secular variation of the geomagnetic field in Europe" № F28.6/043. en Інститут геофізики ім. С.I. Субботіна НАН України Геофизический журнал Secular variation of the geomagnetic field in Europe for the 1985—2005 years Article published earlier |
| spellingShingle | Secular variation of the geomagnetic field in Europe for the 1985—2005 years Maksymchuk, V. Horodysky, Yu. Marchenko, D. |
| title | Secular variation of the geomagnetic field in Europe for the 1985—2005 years |
| title_full | Secular variation of the geomagnetic field in Europe for the 1985—2005 years |
| title_fullStr | Secular variation of the geomagnetic field in Europe for the 1985—2005 years |
| title_full_unstemmed | Secular variation of the geomagnetic field in Europe for the 1985—2005 years |
| title_short | Secular variation of the geomagnetic field in Europe for the 1985—2005 years |
| title_sort | secular variation of the geomagnetic field in europe for the 1985—2005 years |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/101856 |
| work_keys_str_mv | AT maksymchukv secularvariationofthegeomagneticfieldineuropeforthe19852005years AT horodyskyyu secularvariationofthegeomagneticfieldineuropeforthe19852005years AT marchenkod secularvariationofthegeomagneticfieldineuropeforthe19852005years |