Testing the Suitability of the A10-020 Absolute Gravimeter for the Establishment of New Gravity Control in Poland

Dykowski, Przemysław; Krynski, Jan; Sękowski, Marcin

doi:10.1007/978-3-319-10837-7_2

Cited by 11 publications

(14 citation statements)

References 8 publications

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“…The error bars represent the uncertainties at 95% confidence. FG5X is an FG5 gravimeter, both from Micro-g LaCoste, with redesigned dropping chamber (extended free-fall length: 65% longer in distance, redesigned drive system); IMGC: rise and fall gravimeter (D'Agostino et al, 2008); A10 is a portable absolute gravimeter from Micro-g LaCoste (Dykowski et al, 2014). Photo credit: Royal Observatory of Belgium.…”

Section: A24 Errors Due To Offsets Between Absolute Gravimetersmentioning

confidence: 99%

Geophysics From Terrestrial Time‐Variable Gravity Measurements

Camp

Viron

Watlet

et al. 2017

Reviews of Geophysics

184

105

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In a context of global change and increasing anthropic pressure on the environment, monitoring the Earth system and its evolution has become one of the key missions of geosciences. Geodesy is the geoscience that measures the geometric shape of the Earth, its orientation in space, and gravity field. Time‐variable gravity, because of its high accuracy, can be used to build an enhanced picture and understanding of the changing Earth. Ground‐based gravimetry can determine the change in gravity related to the Earth rotation fluctuation, to celestial body and Earth attractions, to the mass in the direct vicinity of the instruments, and to vertical displacement of the instrument itself on the ground. In this paper, we review the geophysical questions that can be addressed by ground gravimeters used to monitor time‐variable gravity. This is done in relation to the instrumental characteristics, noise sources, and good practices. We also discuss the next challenges to be met by ground gravimetry, the place that terrestrial gravimetry should hold in the Earth observation system, and perspectives and recommendations about the future of ground gravity instrumentation.

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Section: A24 Errors Due To Offsets Between Absolute Gravimetersmentioning

confidence: 99%

Geophysics From Terrestrial Time‐Variable Gravity Measurements

Camp

Viron

Watlet

et al. 2017

Reviews of Geophysics

184

105

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“…The A10 absolute gravimeter employs a He-Ne polarizationstabilized laser (ML-1) as the length standard, which is determined by two orthogonal polarization laser modes [18]. The frequencies of the lasers should be calibrated regularly because their time drift would result in a non-negligible change in gravity values [19]. Niebauer et al [20], through a long time calibration for the laser, concluded that the laser frequency will change at least at a rate of 1 MHz per year, on average, and drift by approximately 2 µGal per year.…”

Section: Calibration Of the Instrument And Uncertainty Budget Estimatementioning

confidence: 99%

The use of the A10-022 absolute gravimeter to construct the relative gravimeter calibration baselines in China

Wang¹,

Chen²,

Kaban³

et al. 2014

Metrologia

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The A10-022 absolute gravimeter is utilised to measure the gravitational acceleration (g) for the first time at the 24 sites of the six relative gravimeter calibration baselines (the required absolute standard uncertainty for 10 µGal, 1 µGal = 1 × 10−8 m s−2) in China. The A10-022 was firstly used in long-term indoor observations and compared with a FG5 absolute gravimeter. The analysis of the data indicates that the standard deviation of the measurements was 4.7 µGal, the maximum peak-to-peak gravitational acceleration was 16.9 µGal at the laboratory and the offset compared to the FG5-232 absolute gravimeter was less than 4 µGal. The expanded uncertainties of A10-022 are approximately 22.0 µGal combining the uncertainty of the KCRV (Key Comparison Reference Value), the stability of the reference absolute gravimeter (FG5-232 in this case) and the bias measured during the comparison. Since 2011, the experiment has been implemented at the Lushan (LS) relative gravimeter calibration baseline to detect the feasibility and technical requirements of the A10 in field absolute gravity measurements. The gravitational acceleration was measured using the A10-022 at five new calibration baselines in 2012. Finally, all of the data from the A10-022 were adjusted to the height (25 cm) of the CG-5 relative gravimeter to compare with the results of gravity differences from the CG-5 at the six baselines. The results indicate that the average bias and the standard deviation of the differences between the A10 and the relative gravity differences measured by CG-5 were 5.1 µGal and 2.8 µGal, respectively. The expanded uncertainty of the A10-022 measurements covers the average biases between the A10-022 and CG-5 for each calibration baseline.

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“…Dengan spesifikasi tersebut, gravimeter absolut A-10 dianggap mampu mengukur nilai gayaberat dengan tingkat ketelitian dan efisiensi yang tinggi. Beberapa negara yang menggunakan gravimeter A-10 untuk pembuatan JKG adalah Polandia (Dykowski et al, 2014), Arab Saudi (Ayhan et al, 2015) dan Antartika (Kazama et al, 2013).…”

Section: = + …………………………………………………………(1)unclassified

Pengukuran Gayaberat Menggunakan Gravimeter Absolut a-10

Hartanto¹,

Huda

Putra

et al. 2019

JIG

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Pengukuran gayaberat absolut merupakan pengukuran nilai gayaberat dengan mengamati percepatan vertikal benda jatuh bebas. Pada tahun 2017, Badan Informasi Geospasial (BIG) melakukan pengukuran gayaberat absolut di beberapa pilar Gayaberat Utama (GBU) di Indonesia dengan menggunakan gravimeter A-10. Tujuan penulisan makalah ini adalah memaparkan teknik pengukuran dan pengolahan data gayaberat absolut di GBU yang merupakan bagian dari Jaring Kontrol Gayaberat (JKG) dengan menggunakan gravimeter A-10. Titik-titik yang akan dijadikan pembahasan dalam makalah ini adalah GBU018 di Jakarta dan GBU035 di Makassar. Pengukuran di tiap titik dilakukan sebanyak 10 set dengan jumlah drop untuk setiap set sebanyak 120. Hasil yang diperoleh adalah nilai gayaberat absolut (µgal) beserta ketidakpastiannya. Nilai gayaberat (g) hasil pengolahan di lapangan (on-site) untuk GBU018 adalah 978140735,73 ± 11,17 µgal, sedangkan untuk GBU035 adalah 978117560,92 ± 7,16 µgal. Nilai-nilai tersebut diperoleh setelah dilakukan koreksi gradien gayaberat. Koreksi tersebut diperoleh dari pengamatan gradien menggunakan gravimeter relatif dengan besaran -0,296301 mgal/m untuk GBU018 dan -0,32414 mgal/m untuk GBU035.

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Testing the Suitability of the A10-020 Absolute Gravimeter for the Establishment of New Gravity Control in Poland

Cited by 11 publications

References 8 publications

Geophysics From Terrestrial Time‐Variable Gravity Measurements

Geophysics From Terrestrial Time‐Variable Gravity Measurements

The use of the A10-022 absolute gravimeter to construct the relative gravimeter calibration baselines in China

Pengukuran Gayaberat Menggunakan Gravimeter Absolut a-10

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