2000) Incessant excitation of the Earth's free oscillations: global comparison of superconducting gravimeter
2013, The European Comparison of Absolute Gravimeters
2011 (ECAG-2011) in Walferdange, Luxembourg: results and recommendations.
Gravity data were acquired using a LaCoste& Romberg model G (LCR G-65) relative spring gravimeter
To improve the observation database, several LCR gravimeters
were acquired by the ELB.
The first half of the Churchill data points were made using JILAg absolute gravimeters
In this work the following gravimeters
were used; three La Coste & Romberg G-114 and G-143 models borrowed from the Brazilian Geographic and Statistic Institute (IBGE), G-372 of the Federal University of Parana and a Scintrex digital gravimeter
, model CG-3 , borrowed from the Laboratory of Geophysics Research of the Federal University of Parana.
Digital levels Leica NA3003, invar precise staffs bar coded staffs Wild GPCL-3, GPS receivers Ashtech Z12, Z-Surveyor, Trimble 5700 and gravimeters
La Coste & Romberg were used for measurements.
The effective measurement height of Free-Fall absolute gravimeters
The gravimetric observations were carried out simultaneously with four Lacoste-Romberg model G gravimeters
and positioned by means of a Magellan GPS model NAV 1000-pro, on all the stations and their excenters.
When atoms are cooled to just above absolute zero degrees Kelvin (-460 xF), a state of frictionless matter known as Bose-Einstein Condensate (BEC) is created that can be used to dramatically increase the performance of devices such as gyroscopes, accelerometers, gravimeters
and magnetometers," said ColdQuanta President Rainer Kunz.
To reach this goal, all the stations that contribute to the project have all geodetic techniques; VLBI, SLR, GNSS and DORIS, and absolutte- and superconducting gravimeters
In the underground appeared new measuring instruments: water-tube tiltmeters, relative and absolute gravimeters
and interference extensometer.