A "'gravimeter "'or gravitometer, is an instrument used in gravimetry for measuring the local gravitational field.
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A "'gravimeter "'is an instrument used in gravimetry for measuring the local gravitational field of the Earth.
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The institute currently trains Ph . D students in Meteorology, Seismology, Electromagnetics, and Gravimetry, and is still affiliated with the University of Tehran.
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Methods are often convoluted and a slight mis-step in a procedure can often mean disaster for the analysis ( colloid formation in precipitation gravimetry, for example ).
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Measurements of gravitational acceleration and gravitational potential at the Earth's surface and above it can be used to look for mineral deposits ( see gravity anomaly and gravimetry ).
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In gravimetry e . g ., the primary grid may be 50 m, but is switched to 100 or 500 meters in distances of about 5 or 10 kilometers.
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A vast array of research is conducted there, including upper atmosphere physics, meteorology, seismology, gravimetry, geodesy / mapping, oceanography, glaciology, geology, marine and terrestrial biology, and medical research.
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At the Conrad Observatory, seismic activities ( seismology ), variations in gravitational acceleration and mass changes ( gravimetry ), magnetic field variations, geodetic parameters, atmospheric waves, as well as meteorological data are continuously monitored.
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The principle of geostrophy is useful to oceanographers because it allows them to infer ocean currents from measurements of the sea surface height ( by combined satellite altimetry and gravimetry ) or from vertical profiles of seawater density taken by ships or autonomous buoys.
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For example, Dr . Felicitas Arias, who, as Director of the International Bureau of Weights and Measures ( BIPM )'s Time, Frequency, and Gravimetry Department, is responsible for generating UTC, noted in a press release that the drift of about one minute every 60 90 years could be compared to the 16-minute annual variation between true solar time and mean solar time, the one hour offset by use of daylight time, and the several-hours offset in certain geographically extra-large time zones.
