scholarly journals New Slovak geomagnetic repeat station network

2006 ◽  
Vol 58 (6) ◽  
pp. 751-755
Author(s):  
Fridrich Valach ◽  
Magdalena Vaczyova ◽  
Peter Dolinsky
Keyword(s):  
Station Network ◽  
Repeat Station

scholarly journals Improved observations at the southern African geomagnetic repeat station network

2007 ◽  
Vol 110 (2-3) ◽  
pp. 175-186 ◽  
Author(s):  
M. Korte ◽  
M. Mandea ◽  
P. Kotze ◽  
E. Nahayo ◽  
B. Pretorius
Keyword(s):  
Station Network ◽  
Repeat Station

First Results of the 2019 Algerian Magnetic Repeat Station Network

2020 ◽  
Author(s):  
Abdenacuer Lemgharbi ◽  
Abdeslam Abtout ◽  
Mohamed Hamoudi ◽  
Abdelhamid Bendekken ◽  
Fatma Annad ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Secular Variation ◽  
Geomagnetic Field ◽  
Station Network ◽  
Repeat Station ◽  
First Results ◽  
Geomagnetic Field Models ◽  
Polynomial Modeling ◽  
History Of ◽  
Absolute Measurements

<p><strong>Abstract:</strong></p><p>The second part of the history of the Algerian magnetic repeat station network goes back to 1989 when the new one was started with 37 stations. It was then followed by three other networks in 1993, 1997 and 2005. The first part of this history started at the beginning of the XX<sup>th</sup> and ended ca 1956.</p><p>After a 14-year break, we launched a new repeat stations network in February 2019. The number of carried out stations was increased to 51 to try to cover all the territory.</p><p>Each repeat station network consists of stations of periodically, say  5-6 years, measured of three components of the Earth's magnetic field. to try to derive the spatial distribution of the geomagnetic field of Algeria and it's secular variation. This periodicity is also very important for the need to update local as well as global geomagnetic field models such as the International Geomagnetic Reference Field (IGRF).</p><p>In this work we describe the new 2019 Algerian repeat station network. Then we will discuss the steps of the absolute measurements using two methods. The first one is called the ‘method of zero’ and the second one ‘method of residuals’. The accuracy and resolution of the instruments and data reduction used and their effect on the final results will as well be discussed. We derive the spatial distribution of the geomagnetic field, and its secular variation. Finally, we will show how local, for instance regional polynomial modeling, is the key issue.</p><p><strong>Key words</strong>: geomagnetic repeat network, absolute measurements, zero method, residual method, magnetic maps of Algeria, secular variation.</p>

scholarly journals Ukrainian geomagnetic repeat station network and results of the field work reduced to the epoch 2005.5

2013 ◽  
Vol 55 (6) ◽  
Author(s):  
Valentyn Maksymchuk ◽  
Myxailo Orlyuk ◽  
Viktor Tregybenko ◽  
Yurij Horodyskyy ◽  
Dmytro Marchenko
Keyword(s):  
Geomagnetic Field ◽  
Field Work ◽  
Station Network ◽  
Repeat Station ◽  
Geodetic Measurements ◽  
Magnetic Declination

<p>The results of geomagnetic field components of the renewed Ukrainian repeat stations (RS) network are presented. The methods of absolute geomagnetic and astro-geodetic measurements are described. The reduction of geomagnetic field components is carried out to the 2005.5 epoch and a catalogue of RS is created. Maps of magnetic declination for the Ukraine are constructed and compared with results calculated by the IGRF-2005 model.</p><p> </p>

scholarly journals The Albanian Geomagnetic Repeat Station Network at 1994.75.

1997 ◽  
Vol 49 (5) ◽  
pp. 701-707 ◽  
Author(s):  
Massimo Chiappini ◽  
Osvaldo Battelli ◽  
Salvatore Bushati ◽  
Guido Dominici ◽  
Bejo Duka ◽  
...  
Keyword(s):  
Station Network ◽  
Repeat Station

scholarly journals Secular variation on the territory of the Czech Republic and reduction of the magnetic survey to the epoch 2010.5

2013 ◽  
Vol 55 (6) ◽  
Author(s):  
Pavel Hejda ◽  
Josef Horáček ◽  
Tomáš Bayer
Keyword(s):  
Czech Republic ◽  
Secular Variation ◽  
Magnetic Survey ◽  
The Czech Republic ◽  
Station Network ◽  
First Order ◽  
Repeat Station ◽  
Basic Network ◽  
Three Components

<p>A recent stage of the magnetic surveying activities in the Czech Republic was started in the fifties by setting up a basic network of the first order. It consists of 199 points. Complete measurements of three components, D, H, and Z, were carried out in 1976-78 and 1994-96. Since 1970 six selected points have been revisited approximately every two years. Five of them are situated close to the Czech boundaries, the last one inland. The repeat station network was complemented by another inland station in 2003. The repeat station measurements, together with the data from neighboring observatories, were now used to reduce the data from the last magnetic survey to the epoch 2010.5 and new magnetic charts were drawn. The accuracy of the results and their comparison with IGRF model is also discussed.</p>

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