منابع مشابه
The Superconducting Gravimeter as a Field Instrument Applied to Hydrology
We describe development of a transportable version of the Superconducting Gravimeter (SG) and its test in a field experiment to monitor storage in a karst (limestone) aquifer in central Texas. The SG is contained within two aluminum enclosures, one holding the SG in its 35 liter helium dewar, plus electronics; and the second for refrigerator and power supply. In the field test, the SG was suppo...
متن کاملStudies of Earth Dynamics with the Superconducting Gravimeter
I present investigations of Earth dynamics with the superconducting gravimeter GWR T020 at Metsähovi from 1994 to 2005. As a necessary background, the history and key technical details of the installation are given. Then a new data acquisition system (DAS) developed by the author is described. It has proved reliable and accurate. A pre-requisite for the study of weak phenomena is the removal of...
متن کاملField test of the superconducting gravimeter as a hydrologic sensor.
We report on a field test of a transportable version of a superconducting gravimeter (SG) intended for groundwater storage monitoring. The test was conducted over a 6-month period at a site adjacent to a well in the recharge zone of the karstic Edwards Aquifer, a major groundwater resource in central Texas. The purpose of the study was to assess requirements for unattended operation of the SG i...
متن کاملImproving the determination of the gravity rate of change by combining superconducting with absolute gravimeter data
This paper evaluates different data-processing methods to determine the gravity rate of change, using repeated absolute gravimeter (AG) measurements and continuous monitoring by a superconducting gravimeter (SG). Based on synthetic data representative of signals observed by SGs at various station locations, we demonstrate that the addition of SG information mitigates the error in the estimation...
متن کاملEffects of horizontal acceleration on the superconducting gravimeter CT #036 at Ishigakijima, Japan
In the gravity sensor of a superconducting gravimeter, a superconducting sphere as a test mass is levitated in a mag‐ netic field. Such a sensor is susceptible to applied horizontal as well as vertical acceleration, because the translational degrees of freedom of the mass are not perfectly limited to the vertical direction. In the case of the superconducting gravimeter CT #036 installed at Ishi...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 1999
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.1150092