THE CAPACITY OF THE SCINTREX AUTOGRAV CG-3M No. 4492 GRAVIMETER FOR
In autumn 2001, the Institut für Erdmessung (IfE), received the new Scintrex Autograv CG-3M spring gravimeter no. 4492 (SC-4492). Compared with LaCoste-Romberg gravimeters, the Scintrex instrument offers the advantage of a more simple calibration function. Due to the straightforward sensor design (n...
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Universidade Federal de Uberlândia
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ftdoajarticles:oai:doaj.org/article:9950e33a9d8a4a409eecc5bde25521af 2023-05-15T16:13:08+02:00 THE CAPACITY OF THE SCINTREX AUTOGRAV CG-3M No. 4492 GRAVIMETER FOR Ludger Timmen Olga Gitlein 2004-12-01T00:00:00Z https://doaj.org/article/9950e33a9d8a4a409eecc5bde25521af EN PT eng por Universidade Federal de Uberlândia http://www.rbc.ufrj.br/_pdf_56_2004/56_2_01.pdf https://doaj.org/toc/0560-4613 https://doaj.org/toc/1808-0936 0560-4613 1808-0936 https://doaj.org/article/9950e33a9d8a4a409eecc5bde25521af Revista Brasileira de Cartografia, Vol 56, Iss 2, Pp 89-95 (2004) Relative gravimetry Scintrex gravimeter gravimeter calibration accuracy gravimeter drift Geography. Anthropology. Recreation G Cartography GA101-1776 article 2004 ftdoajarticles 2022-12-31T06:38:52Z In autumn 2001, the Institut für Erdmessung (IfE), received the new Scintrex Autograv CG-3M spring gravimeter no. 4492 (SC-4492). Compared with LaCoste-Romberg gravimeters, the Scintrex instrument offers the advantage of a more simple calibration function. Due to the straightforward sensor design (no micrometer screws and gearboxes, no astatisation), a modelling of periodical calibration terms and of a higher order polynomial calibration function is not required. The costly calibration measurements can be reduced to some relative observations between two reliable absolute gravity stations. No complex calibration system should be necessary. A reliable evaluation of the SC-4492 was done with respect to the stability of the calibration, measurement accuracy and precision, drift behaviour, and gravity range dependency of the calibration factor. Measurements were performed on the Hannover vertical calibration line (200 µm/s2 (20 mGal) range, 20-storied building, 10 µm/s2 interval), on the Cuxhaven-Harz north-south line (3000 µm/s2 range, 34 stations, 90 µm/s2 interval) of the gravimeter calibration system Hannover, and in the absolute gravimetry net of the Fennoscandian land uplift area (6200 µm/s2 range). A total gravity range of almost 0.015 m/s2 has been covered. In addition, the gravimeter was employed in the determination of vertical gravity gradients and centring to safety points for absolute gravimetry, and the observation of the horizontal gradient field at the IfE absolute gravity reference station in Clausthal. This paper presents the results as obtained in regional, local and microgravimetric surveys. The achieved accuracies are in the order of ±10 to 100 nm/s2 (±1 to 10 µGal). No instability of the calibration and no gravity range dependency could be proven within the order of 1•10-4. Overall, the gravity meter SC-4492 meets fully the expectations of IfE. Article in Journal/Newspaper Fennoscandian Directory of Open Access Journals: DOAJ Articles |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
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language |
English Portuguese |
topic |
Relative gravimetry Scintrex gravimeter gravimeter calibration accuracy gravimeter drift Geography. Anthropology. Recreation G Cartography GA101-1776 |
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Relative gravimetry Scintrex gravimeter gravimeter calibration accuracy gravimeter drift Geography. Anthropology. Recreation G Cartography GA101-1776 Ludger Timmen Olga Gitlein THE CAPACITY OF THE SCINTREX AUTOGRAV CG-3M No. 4492 GRAVIMETER FOR |
topic_facet |
Relative gravimetry Scintrex gravimeter gravimeter calibration accuracy gravimeter drift Geography. Anthropology. Recreation G Cartography GA101-1776 |
description |
In autumn 2001, the Institut für Erdmessung (IfE), received the new Scintrex Autograv CG-3M spring gravimeter no. 4492 (SC-4492). Compared with LaCoste-Romberg gravimeters, the Scintrex instrument offers the advantage of a more simple calibration function. Due to the straightforward sensor design (no micrometer screws and gearboxes, no astatisation), a modelling of periodical calibration terms and of a higher order polynomial calibration function is not required. The costly calibration measurements can be reduced to some relative observations between two reliable absolute gravity stations. No complex calibration system should be necessary. A reliable evaluation of the SC-4492 was done with respect to the stability of the calibration, measurement accuracy and precision, drift behaviour, and gravity range dependency of the calibration factor. Measurements were performed on the Hannover vertical calibration line (200 µm/s2 (20 mGal) range, 20-storied building, 10 µm/s2 interval), on the Cuxhaven-Harz north-south line (3000 µm/s2 range, 34 stations, 90 µm/s2 interval) of the gravimeter calibration system Hannover, and in the absolute gravimetry net of the Fennoscandian land uplift area (6200 µm/s2 range). A total gravity range of almost 0.015 m/s2 has been covered. In addition, the gravimeter was employed in the determination of vertical gravity gradients and centring to safety points for absolute gravimetry, and the observation of the horizontal gradient field at the IfE absolute gravity reference station in Clausthal. This paper presents the results as obtained in regional, local and microgravimetric surveys. The achieved accuracies are in the order of ±10 to 100 nm/s2 (±1 to 10 µGal). No instability of the calibration and no gravity range dependency could be proven within the order of 1•10-4. Overall, the gravity meter SC-4492 meets fully the expectations of IfE. |
format |
Article in Journal/Newspaper |
author |
Ludger Timmen Olga Gitlein |
author_facet |
Ludger Timmen Olga Gitlein |
author_sort |
Ludger Timmen |
title |
THE CAPACITY OF THE SCINTREX AUTOGRAV CG-3M No. 4492 GRAVIMETER FOR |
title_short |
THE CAPACITY OF THE SCINTREX AUTOGRAV CG-3M No. 4492 GRAVIMETER FOR |
title_full |
THE CAPACITY OF THE SCINTREX AUTOGRAV CG-3M No. 4492 GRAVIMETER FOR |
title_fullStr |
THE CAPACITY OF THE SCINTREX AUTOGRAV CG-3M No. 4492 GRAVIMETER FOR |
title_full_unstemmed |
THE CAPACITY OF THE SCINTREX AUTOGRAV CG-3M No. 4492 GRAVIMETER FOR |
title_sort |
capacity of the scintrex autograv cg-3m no. 4492 gravimeter for |
publisher |
Universidade Federal de Uberlândia |
publishDate |
2004 |
url |
https://doaj.org/article/9950e33a9d8a4a409eecc5bde25521af |
genre |
Fennoscandian |
genre_facet |
Fennoscandian |
op_source |
Revista Brasileira de Cartografia, Vol 56, Iss 2, Pp 89-95 (2004) |
op_relation |
http://www.rbc.ufrj.br/_pdf_56_2004/56_2_01.pdf https://doaj.org/toc/0560-4613 https://doaj.org/toc/1808-0936 0560-4613 1808-0936 https://doaj.org/article/9950e33a9d8a4a409eecc5bde25521af |
_version_ |
1765998736604921856 |