A sapphire monolithic differential accelerometer as core sensor for gravity gradiometric geophysical instrumentation
Gradiometric gravimetry is a survey technique widely used in geological structure investigation. This work demonstrates the feasibility of a new class of low frequency accelerometers for geodynamics studies and space applications. We present the design features of a new low noise single-axis differe...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Istituto Nazionale di Geofisica e Vulcanologia (INGV)
2006-06-01
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| Series: | Annals of Geophysics |
| Subjects: | |
| Online Access: | http://www.annalsofgeophysics.eu/index.php/annals/article/view/3111 |
| _version_ | 1819195602332811264 |
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| author | F. Mango F. Fidecaro A. De Michele N. Beverini A. Bertolini |
| author_facet | F. Mango F. Fidecaro A. De Michele N. Beverini A. Bertolini |
| author_sort | F. Mango |
| collection | DOAJ |
| description | Gradiometric gravimetry is a survey technique widely used in geological structure investigation. This work demonstrates the feasibility of a new class of low frequency accelerometers for geodynamics studies and space applications. We present the design features of a new low noise single-axis differential accelerometer; the sensor is suitable to be used in a Gravity Gradiometer (GG) system for land geophysical survey and gravity gradient measurements. A resolution of 1 Eötvös (1 Eö=10?9s?2) at one sample per second is achievable in a compact, lightweight (less than 2 kg) portable instrument, operating at room temperature. The basic components of the sensor are two identical rigidly connected accelerometers separated by a 15-cm baseline vector and the useful signal is extracted as the subtraction of the two outputs, by means of an interferometric microwave readout system. The structure will be engraved in a monocrystal of sapphire by means of Computer-Numerically-Controlled (CNC) ultrasonic machining: the material was chosen because of its unique mix of outstanding mechanical and dielectric properties. |
| first_indexed | 2024-12-23T02:15:22Z |
| format | Article |
| id | doaj.art-d2c66c608794418b8081b795f5cc5b5e |
| institution | Directory Open Access Journal |
| issn | 1593-5213 2037-416X |
| language | English |
| last_indexed | 2024-12-23T02:15:22Z |
| publishDate | 2006-06-01 |
| publisher | Istituto Nazionale di Geofisica e Vulcanologia (INGV) |
| record_format | Article |
| series | Annals of Geophysics |
| spelling | doaj.art-d2c66c608794418b8081b795f5cc5b5e2022-12-21T18:03:40ZengIstituto Nazionale di Geofisica e Vulcanologia (INGV)Annals of Geophysics1593-52132037-416X2006-06-01494-510.4401/ag-3111A sapphire monolithic differential accelerometer as core sensor for gravity gradiometric geophysical instrumentationF. MangoF. FidecaroA. De MicheleN. BeveriniA. BertoliniGradiometric gravimetry is a survey technique widely used in geological structure investigation. This work demonstrates the feasibility of a new class of low frequency accelerometers for geodynamics studies and space applications. We present the design features of a new low noise single-axis differential accelerometer; the sensor is suitable to be used in a Gravity Gradiometer (GG) system for land geophysical survey and gravity gradient measurements. A resolution of 1 Eötvös (1 Eö=10?9s?2) at one sample per second is achievable in a compact, lightweight (less than 2 kg) portable instrument, operating at room temperature. The basic components of the sensor are two identical rigidly connected accelerometers separated by a 15-cm baseline vector and the useful signal is extracted as the subtraction of the two outputs, by means of an interferometric microwave readout system. The structure will be engraved in a monocrystal of sapphire by means of Computer-Numerically-Controlled (CNC) ultrasonic machining: the material was chosen because of its unique mix of outstanding mechanical and dielectric properties.http://www.annalsofgeophysics.eu/index.php/annals/article/view/3111gradiometric gravimeteraccelerometerWhispering gallery cavity |
| spellingShingle | F. Mango F. Fidecaro A. De Michele N. Beverini A. Bertolini A sapphire monolithic differential accelerometer as core sensor for gravity gradiometric geophysical instrumentation Annals of Geophysics gradiometric gravimeter accelerometer Whispering gallery cavity |
| title | A sapphire monolithic differential accelerometer as core sensor for gravity gradiometric geophysical instrumentation |
| title_full | A sapphire monolithic differential accelerometer as core sensor for gravity gradiometric geophysical instrumentation |
| title_fullStr | A sapphire monolithic differential accelerometer as core sensor for gravity gradiometric geophysical instrumentation |
| title_full_unstemmed | A sapphire monolithic differential accelerometer as core sensor for gravity gradiometric geophysical instrumentation |
| title_short | A sapphire monolithic differential accelerometer as core sensor for gravity gradiometric geophysical instrumentation |
| title_sort | sapphire monolithic differential accelerometer as core sensor for gravity gradiometric geophysical instrumentation |
| topic | gradiometric gravimeter accelerometer Whispering gallery cavity |
| url | http://www.annalsofgeophysics.eu/index.php/annals/article/view/3111 |
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