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Statements

Subject Item
n2:RIV%2F68407700%3A21230%2F03%3A03089733%21RIV%2F2004%2FMSM%2F212304%2FN
rdf:type
n8:Vysledek skos:Concept
dcterms:description
A correct interpretation of the results of very precise relative gravity measurements needs a good knowledge of external disturbing effects on the gravimeters. Among them the effects of the magnetic field sometimes cannot be neglected. Experimental investigations of magnetic effects on the LCR gravimeters No.137, No.176 and No.1068 were carried out at the Geodetic Observatory Pecný. In experiments an artificial magnetic field generated by a Helmholtz coil was used. Relations between the gravimeter records and the magnetic field were determined for both the horizontal and the vertical component of the vector of magnetic induction. An extreme sensitivity to magnetic field changes up to 6 nm s-2/uT was found with the gravimeter LCR G No.137. A significant reduction of this disturbing effect by a factor of 1/30 was achieved by placing the gravimeter into the permalloy cylinder NiFe 79. A correct interpretation of the results of very precise relative gravity measurements needs a good knowledge of external disturbing effects on the gravimeters. Among them the effects of the magnetic field sometimes cannot be neglected. Experimental investigations of magnetic effects on the LCR gravimeters No.137, No.176 and No.1068 were carried out at the Geodetic Observatory Pecný. In experiments an artificial magnetic field generated by a Helmholtz coil was used. Relations between the gravimeter records and the magnetic field were determined for both the horizontal and the vertical component of the vector of magnetic induction. An extreme sensitivity to magnetic field changes up to 6 nm s-2/uT was found with the gravimeter LCR G No.137. A significant reduction of this disturbing effect by a factor of 1/30 was achieved by placing the gravimeter into the permalloy cylinder NiFe 79.
dcterms:title
Magnetické zkoušky gravimetrů LaCoste a Romberg Magnetic Testing of LaCoste and Romberg Gravimeters Magnetické zkoušky gravimetrů LaCoste a Romberg
skos:prefLabel
Magnetické zkoušky gravimetrů LaCoste a Romberg Magnetické zkoušky gravimetrů LaCoste a Romberg Magnetic Testing of LaCoste and Romberg Gravimeters
skos:notation
RIV/68407700:21230/03:03089733!RIV/2004/MSM/212304/N
n6:strany
210 ; 216
n6:aktivita
n14:Z
n6:aktivity
Z(MSM 212300016)
n6:cisloPeriodika
10
n6:dodaniDat
n18:2004
n6:domaciTvurceVysledku
n17:6936180
n6:druhVysledku
n12:J
n6:duvernostUdaju
n15:S
n6:entitaPredkladatele
n7:predkladatel
n6:idSjednocenehoVysledku
614112
n6:idVysledku
RIV/68407700:21230/03:03089733
n6:jazykVysledku
n16:cze
n6:klicovaSlova
gravimeter;magnetic field;magnetic testing;tri-axial magnetometer
n6:klicoveSlovo
n11:magnetic%20testing n11:magnetic%20field n11:gravimeter n11:tri-axial%20magnetometer
n6:kodStatuVydavatele
CZ - Česká republika
n6:kontrolniKodProRIV
[A6CB21654450]
n6:nazevZdroje
Geodetický a kartografický obzor
n6:obor
n10:JB
n6:pocetDomacichTvurcuVysledku
1
n6:pocetTvurcuVysledku
3
n6:rokUplatneniVysledku
n18:2003
n6:svazekPeriodika
49(91)
n6:tvurceVysledku
Lederer, M. Pálinkáš, V. Kašpar, Petr
n6:zamer
n9:MSM%20212300016
s:issn
0016-7096
s:numberOfPages
7
n13:organizacniJednotka
21230