REPEAT STATIONS MEASUREMENTS IN UKRAINE IN 2006 3rd MagNetE WORKSHOP ON EUROPEAN GEOMAGNETIC REPEAT STATION SURVAY 2005 – 2006 Bucharest, 14 – 16 May 2007 REPEAT STATIONS MEASUREMENTS IN UKRAINE IN 2006 V.Maksymchuk1, V.Tregubenko2, Yu.Horodyskyy1, M.Orlyuk3, E.Nakalov1, I.Chobotok1 1 – Carpathian Branch of Subbotin Institute of Geophysics NAS Ukraine; Naukova str.3-b, 79060 Lviv, Ukraine 2 – Ukrainian Geological Prospecting State Institute; Avtozavodska str.78, 04114 Kyiv, Ukraine 3 - Subbotin Institute of Geophysics NAS Ukraine; Palladin av.32, 03680 Kyiv, Ukraine Members of the Project: Carpathian Branch of Subbotin Institute of Geophysics NAS Ukraine, Lviv Ukrainian Geological Prospecting State Institute, Kyiv Subbotin Institute of Geophysics NAS Ukraine, Kyiv
MAIN SCIENTIFIC AND PRACTICAL AIMS: compilation of magnetic maps construction of global and regional models of a magnetic field and secular variations investigations of lithosphere influence on secular variations – anomalies of secular variations investigations of dynamics and kinematics secular variations focuses
Secular variation of geomagnetic field δF in Europe (magnetic observatories data) 1995 - 2000 1990 - 1995
Ukraine has four magnetic observatories: “Argentina Islands” (Ukrainian Antarctic Station “Academic Vernadsky”) “KYIV” (Dymer) “Lviv” (Ivano-Frankove) “ODESA” (Stepanivka)
MAGNETIC OBSERVATORY “ARGENTINA ISLANDS”
Magnetic observatory “Argentina Islands” on the UA Antarctic station “Academic Vernadsky”
Geomagnetic observations in the magnetic observatory “Argentina Islands”
Field trials of a magnetic-variational station in Antarctic
REPET STATION OF UKRAINE IN 1972 - 1974
Modern state of Repeat Stations Network in Ukraine
RS density: For this 50 RS, equipped by pillars we are planning some 100 – 200 km density. Epoch 2006: Were founded 21RS in Carpathian region and Central Ukraine. On each of this stations were measured magnetic field components D, I, F. Epoch 2007: - We are planning to found new 30 RS in the west, east and south of Ukraine. - But we have a financial problem. As yet, we have funds only for 15 RS.
Instruments for RS survey: F – proton magnetometer MV-01 (USSR) D, I – LEMI-203, Fluxgate Declinometer-Inclinometer (ISR, Lviv, Ukraine) Variations of X, Y, Z – LEMI-008, Digital magnetic-variation station (ISR, Lviv, Ukraine) Geographic North – hour angle method of Sun, theodolite UT2M (USSR)
Field works: LEMI-203 on RS
Measurement praktice
Field works TARGET RS PILLOW
Measurements practice measurements with a proton magnetometer are carried out a few meters around the site for determination of field’s local gradient and detection of metal peaces that may be recently occurred in site Set up of the base station for continuous F-recording during the whole duration of measurements in a distance 30 – 200 m from the pillar F-readings above the pillar before and after D I-measurements 4 – 8 cycles of DI-measurements per day during 2 – 3 days, orientation controlled by 1 – 2 triangulation points before and after each cycle
Astrogeodesic parameters of RS points H (m) А(of target) (А) Zavadiv 50 03’ 51.5” 23 23’ 24” 230 243 14’ 40” 34” Rogatyn 49 27’ 16” 24 35’ 20.5” 276 172 13’ 21.5” 21.6” Lubomil’ 51 16’ 00” 24 00’ 28” 194 240 45’ 22” 27.3” K-Podil’sky 48 34’ 38.7” 26 36’ 22” 193 111 56’ 26” 23.4” Kal’na 48 57’ 11” 23 48’ 51.3” 500 336 05’ 33” 12.5” Horohiv 50 34’ 48.5” 24 31’ 20.3” 210 273 00’ 27” 38” Delyatyn 48 32’ 56.3” 24 38’ 01.7” 408 297 36’ 30” 14.1” Borynia 49 03’ 18” 23 03’ 30.7” 640 254 12’ 58” 12” Beregove 48 14’ 03” 22 38’ 51” 151 237 39’ 15” 12.1” Beregomet 48 11’ 50” 25 22’ 39.6” 450 226 13’ 37.4” 12.4” N/Selysche 4811’51.3’’ 2327’21.4’’ 247 278 12’ 16” ---
Reduction of X-, Y-, Z-components of Repeat Stations to epoch 2006 Reduction of X-, Y-, Z-components of Repeat Stations to epoch 2006.5 due to Magnetic Observatory “Belsk” (PL) RS point Z Z X X Y Y Zavadiv 45408.0 1.75 19776.7 3.02 1739.4 4.91 Rogatyn 45228.1 1.18 20118.4 1.92 1601.6 3.47 Lubomil’ 45691.5 19108.4 2.05 1453.9 3.09 K-Podil’sky 44876.7 1.37 20484.5 1.81 2019.0 4.02 Kal’na 44691.0 1.74 20428.9 2.69 Horohiv 45777.1 1.30 19523.2 3.03 1473.1 4.74 Delyatyn 44627.1 1.17 20572.2 2.29 Borynia 44568.9 0.82 Beregove 44251.3 1.58 20590.6 3.69 Beregomet 44540.5 2.45 20702.0 3.38 1633.1 3.97 N/Selysche 44111.5 20708.7 3.68 1617.9 4.61
The main problems: a modernization of magnetic observatories – replacement of old equipment by digital magnetic-variational stations and modern fluxgate magnetometers improvement of reduction methods for considering of large distances between RS and magnetic observatories improvement of geomagnetic and astronomic measurements methods to reduce errors financial support of investigations RS equipment upgrade
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