A 19 day earth tide measurement with a MEMS gravimeter

被引：25

作者：

Prasad, Abhinav ^{[1
]}

Middlemiss, Richard P. ^{[1
]}

Noack, Andreas ^{[1
]}

Anastasiou, Kristian ^{[1
]}

Bramsiepe, Steven G. ^{[1
]}

Toland, Karl ^{[1
]}

Utting, Phoebe R. ^{[1
]}

Paul, Douglas J. ^{[2
]}

Hammond, Giles D. ^{[1
]}

机构：

[1] Univ Glasgow, Sch Phys & Astron, Kelvin Bldg,Univ Ave, Glasgow G12 8QQ, Lanark, Scotland

[2] Univ Glasgow, James Watt Sch Engn, Rankine Bldg,Oakfield Ave, Glasgow G12 8LT, Lanark, Scotland

来源：

SCIENTIFIC REPORTS | 2022年 / 12卷 / 01期

基金：

欧盟地平线“2020”; 英国工程与自然科学研究理事会;

关键词：

HYDROLOGICAL MODELS; GRAVITY; VOLCANO;

D O I：

10.1038/s41598-022-16881-1

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The measurement of tiny variations in local gravity enables the observation of subterranean features. Gravimeters have historically been extremely expensive instruments, but usable gravity measurements have recently been conducted using MEMS (microelectromechanical systems) sensors. Such sensors are cheap to produce, since they rely on the same fabrication techniques used to produce mobile phone accelerometers. A significant challenge in the development of MEMS gravimeters is maintaining stability over long time periods, which is essential for long term monitoring applications. A standard way to demonstrate gravimeter stability and sensitivity is to measure the periodic elastic distortion of the Earth due to tidal forces-the Earth tides. Here, a 19 day measurement of the Earth tides, with a correlation coefficient to the theoretical signal of 0.975, has been presented. This result demonstrates that this MEMS gravimeter is capable of conducting long-term time-lapse gravimetry, a functionality essential for applications such as volcanology.

引用

页数：12

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