Long-term features of quartz pressure gauges inferred from experimental and in-situ observations

Matsumoto, Hiroyuki; Araki, Eiichiro; Kawaguchi, Katsuyoshi; Nishida, Shuhei; Kaneda, Yasufumi

doi:10.1109/oceans-taipei.2014.6964447

Cited by 9 publications

(3 citation statements)

References 9 publications

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“…For example, Paroscientific has proposed a resonant pressure sensor product with a quartz vibrating beam as the resonant unit and a metal Bourdon tube as the pressure conversion unit [ 11 ]. Epson has developed a resonant pressure sensor product with a quartz tuning fork as the resonant unit, a metal corrugated tube as the pressure conversion unit, and a flexible rod [ 12 ]. The above products are widely used in the field of deep-sea exploration to measure sea depth and sea pressure and can also be used to predict or study tsunamis, tides, submarine volcanos, and other phenomena [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

A High-Precision Quartz Resonant Ultra-High Pressure Sensor with Integrated Pressure Conversion Structure

Zhang,

Li,

et al. 2023

Micromachines

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A quartz resonant pressure sensor is proposed for high-precision measurement of ultra-high pressure. The resonant unit realizes a push–pull differential layout, which restrains the common-mode interference factor, and the resonator is only subject to axial force. The pressure conversion unit is made in an integrated manner, avoiding output drift problems caused by residual stress and small gaps during assembly, welding, and other processes in sensor preparation. Theoretical and simulation analysis was conducted on the overall design scheme of the sensor in this paper, verifying the feasibility. Sensor prototypes were created and performance experiments were conducted. The experimental results show that the sensitivity of the ultra-high pressure sensor is 46.32 Hz/MPa at room temperature within the pressure range of 120 MPa, and the comprehensive accuracy is 0.0266%. The comprehensive accuracy of the sensor is better than 0.0288% FS in the full temperature range environment. This proves that the sensor scheme is suitable for high-precision and high-stability detection of ultra-high pressure, providing new solutions in special pressure measurement fields such as deep-sea and oil exploration.

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Section: Introductionmentioning

confidence: 99%

A High-Precision Quartz Resonant Ultra-High Pressure Sensor with Integrated Pressure Conversion Structure

Zhang,

Li,

et al. 2023

Micromachines

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“…All LTBMSs are connected to the DONET seafloor cable network and currently operating as a real‐time monitoring observatory. Although dense pressure gauge networks have now been constructed in the Nankai Trough, long‐term pressure measurements contain inherent instrumental drift at rates typically up to 10 cm/year (equivalent to 10 hPa/year) in addition to real, physical pressure signals (Matsumoto et al, 2014; Polster et al, 2009). Therefore, correction of the drift component using a calibration system is necessary to precisely measure long‐term seafloor pressure.…”

Section: Introductionmentioning

confidence: 99%

Mobile Pressure Calibrator for the Development of Submarine Geodetic Monitoring Systems

et al. 2020

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Monitoring long-term vertical seafloor displacements at the centimeter scale using a pressure gauge network in the seismogenic zone is key to understanding the real-time strength of interplate coupling. The mobile pressure calibrator (MPC) was developed for calibrating a seafloor pressure gauge network with a resolution of less than 1 hPa/year, equivalent to about 1 cm/year. Inherent drift of the seafloor pressure gauges is estimated by comparing the raw observations between the seafloor pressure gauges and the MPC and subsequently subtracting the long-term pressure data. In October 2018, three in situ pressure measurements were conducted to evaluate the measurement uncertainty of the MPC. The calibrator was placed adjacent to a seafloor pressure gauge, which is installed at a depth of about 1,750 m in the Nankai Trough offshore Japan, and measured the pressure differences between the calibrator and the seafloor pressure gauge. The drift component of the pressure gauge used inside the MPC was estimated and corrected based on calibrations performed in the laboratory before and after the in situ seafloor pressure measurements. The results indicated an uncertainty of 0.04 hPa for the in situ measurements and therefore the possibility of detecting small, long-term seafloor displacements. We continue to compare the MPC and seafloor pressure gauge deviations over intervals of several months to years and estimate the drift of the seafloor pressure gauge. Plain Language Summary In the Nankai Trough, Japan, large earthquakes have repeatedly occurred. The Dense Ocean floor Network system for Earthquakes and Tsunamis (DONET) consisting of 51 observatories, each equipped with a pressure gauge to study vertical deformation and tsunami signals, was installed spanning the region. Crustal deformation is a key parameter for estimating plate coupling strength in subduction zones. The DONET pressure gauge network could be useful for measuring long-term vertical deformation; however, pressure gauges inherently drift at rates up to 10 hPa/year, about 10 cm/year, which likely exceed seafloor displacement rates. It is necessary to correct gauge drift to reliably detect small seafloor displacements. The mobile pressure calibrator (MPC) was developed to correct drift within the DONET pressure gauge network and enable seafloor displacement measurements on the order of 1 cm. In October 2018, we conducted three pressure measurements at a DONET pressure gauge to evaluate the MPC accuracy. We determined an uncertainty of 0.04 hPa, 0.04 cm equivalent, which should enable seafloor vertical displacement measurements better than 1 cm. Continued DONET pressure gauge MPC calibrations could enable high-density and real-time vertical displacement measurements above the seismogenic zone and contribute to understanding plate coupling strength and earthquake and tsunami hazards.

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“…They emphasized that there is a correlation between the average absolute ocean bottom pressure and tsunami height at the coast. Following this idea, a dense ocean-floor network system for earthquakes and tsunamis started its operation in Nankai Trough, SW Japan in the early of 2010 using various sensors such as broadband seismometer, seismic accelerometer, tsunami meter, etc (Matsumoto et al 2014;Matsumoto, Kawaguchi and Araki, 2015).…”

Section: Introductionmentioning

confidence: 99%

Seismic Pressures in Offshore Areas: Numerical Results

Flores-Guzmán

Olivera-Villaseñor

Kryvko

et al. 2016

Lat. Am. j. solids struct.

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The purpose of this study is to obtain numerical estimations of seismic pressures in offshore areas considering the effect of seabed configurations and soil materials. To this end, the Boundary Element Method is used to irradiate waves, so that force densities can be obtained for each boundary element. From this hypothesis, Huygens´ Principle is implemented since the diffracted waves are constructed at the boundary from which they are radiated. Application of boundary conditions allows us to determine a system of integral equations of Fredholm type of second kind and zero order. Various models were analyzed, the first one is used to validate the proposed formulation. Other models of ideal seabed configurations are developed to estimate the seismic pressure profiles at several locations. The influence of P-and SV-wave incidence was also highlighted. In general terms, it was found that soil materials with high wave propagation velocities generate low pressure fields. The difference between the maximum pressure values obtained for a soil material with shear wave velocity of β 3000 m/s is approximately 9 times lower than those obtained for a material with β 90 m/s, for the P-wave incidence, and 2.5 times for the case of SV-waves. These results are relevant because the seabed material has direct implications on the field pressure obtained. A relevant finding is that the highest seismic wave pressure due to an offshore earthquake is almost always located at the seafloor.

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Long-term features of quartz pressure gauges inferred from experimental and in-situ observations

Cited by 9 publications

References 9 publications

A High-Precision Quartz Resonant Ultra-High Pressure Sensor with Integrated Pressure Conversion Structure

A High-Precision Quartz Resonant Ultra-High Pressure Sensor with Integrated Pressure Conversion Structure

Mobile Pressure Calibrator for the Development of Submarine Geodetic Monitoring Systems

Seismic Pressures in Offshore Areas: Numerical Results

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