Analysis of the repeated absolute gravity measurements in the Czech Republic, Slovakia and Hungary from the period 1991–2010 considering instrumental and hydrological effects

Pálinkáš, Vojtech; Lederer, M.; Kostelecký, Jakub; Šimek, J.; Mojzes, M.; Ferianc, D.; Csapó, Géza

doi:10.1007/s00190-012-0576-1

Cited by 20 publications

(15 citation statements)

References 37 publications

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“…Intercomparison campaigns (Francis et al, , 2013(Francis et al, , 2015Schmerge et al, 2012;Vitushkin et al, 2002) have shown that offsets between absolute gravimeters range commonly 100-220 nm/s 2 ( Figure A9). Hence, when absolute gravity measurements are performed, if different AGs are used in the same study, instrument differences should be included in the uncertainty budget (Mémin et al, 2011;Pálinkáš et al, 2013;Sato et al, 2006) or accounted for (Lambert et al, 2006;. Concurrently, the uncertainty due to the setup of the AG instrument should also be taken into account.…”

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

180

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

180

105

View full text Add to dashboard Cite

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“…When different AGs are used in the same study, interinstrument differences should be taken into account, as done, for example, by Lambert et al [2006Lambert et al [ , 2013b, or included in the uncertainty budget [Sato et al, 2006;Mémin et al, 2011;Palinkas et al, 2012]. Intercomparison campaigns [e.g., Francis et al, 2005Francis et al, , 2010Francis et al, , 2013Francis et al, , 2015Jiang et al, 2012;Schmerge et al, 2012;Vitushkin et al, 2002] showed that differences between FG5 and JILAg gravimeters are commonly of the order of 100-150 nm/s 2 .…”

Section: Instrumental Artifactsmentioning

confidence: 99%

“…Chen et al [2016] Chen et al [2016] are questionable in our opinion, especially when the still experimental JILAg and early FG5 instruments are taken into account. A detailed discussion on the offsets and uncertainties of JILAg and early FG5 gravimeters is given by Palinkas et al [2012]. Moreover, in Lhasa, the trend is the average of two trends recorded at two different places, 800 m apart.…”

Section: Southern Tibetmentioning

confidence: 99%

Separating climate‐induced mass transfers and instrumental effects from tectonic signal in repeated absolute gravity measurements

Camp

Viron

Avouac

2016

Geophysical Research Letters

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We estimate the signature of the climate‐induced mass transfers in repeated absolute gravity measurements based on satellite gravimetric measurements from the Gravity Recovery and Climate Experiment (GRACE) mission. We show results at the globe scale and compare them with repeated absolute gravity (AG) time behavior in three zones where AG surveys have been published: Northwestern Europe, Canada, and Tibet. For 10 yearly campaigns, the uncertainties affecting the determination of a linear gravity rate of change range 3–4 nm/s2/a in most cases, in the absence of instrumental artifacts. The results are consistent with what is observed for long‐term repeated campaigns. We also discuss the possible artifact that can result from using short AG survey to determine the tectonic effects in a zone of high hydrological variability. We call into question the tectonic interpretation of several gravity changes reported from stations in Tibet, in particular the variation observed prior to the 2015 Gorkha earthquake.

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“…215 of MicroG-Solution, with an accuracy of 2 μGal. The variations in the gravity values are caused mainly by the local and global hydrological effect (Pálinkáš et al, 2013). After converting the values of the measured gravity difference to the height difference we can compare these data with the variations obtained from the monthly models.…”

Section: Graphical Representation Of Temporal Variations Of the Geoidmentioning

confidence: 99%

Global and regional seasonal variations of the geoid detected by GRACE

Kostelecký¹

2013

Acta Geodynamica Et Geomaterialia

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Since 2002, the US-German GRACE (Gravity Recovery and Climate Experiment) mission has been providing a precise survey of the Earth's time-variable gravity field, with unprecedented temporal and spatial sampling. GRACE time-variable gravity fields provide a means of measuring the temporal and spatial variations of mass redistribution within the Earth system. The GRACE mission has started a new era in studying a series of geophysical problems ranging from deep Earth structure to tracking mass redistribution on and near the surface of the Earth. Time variability of the gravity field presented here is based on the transformation of "monthly gravity field models" to the geoid. We show the changes caused by the global water cycle and land hydrology.

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Analysis of the repeated absolute gravity measurements in the Czech Republic, Slovakia and Hungary from the period 1991–2010 considering instrumental and hydrological effects

Cited by 20 publications

References 37 publications

Geophysics From Terrestrial Time‐Variable Gravity Measurements

Geophysics From Terrestrial Time‐Variable Gravity Measurements

Separating climate‐induced mass transfers and instrumental effects from tectonic signal in repeated absolute gravity measurements

Global and regional seasonal variations of the geoid detected by GRACE

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