Radio interferometry

Physics – Geophysics

Scientific paper

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Geophysics, Radio Interferometers, Technology Utilization, Very Long Base Interferometry, Bibliographies, Geodetic Surveys, Iris Satellites, Polar Wandering (Geology), Radio Astronomy

Scientific paper

The progress made during the period of 1983-1986 in the application of VLBI techniques in the fields of geodesy and geophysics is described. During this period three major observing campaigns were devoted to applications in these fields: (1) the IRIS project, with stations in U.S., Sweden, and FRG; (2) the NASA's Crustal Dynamics Project, with stations in North America, Europe, and across the Pacific; and (3) the JPL's project Time and Earth Motion Precision Observations, using antennas in California, Spain, and Australia. Data taken during this period have contributed to understanding the interactions between the earth's mantle and its fluid core and the atmosphere and to the knowledge of lithospheric deformation. The determination of the earth tide Love numbers was improved, and a new standard of accuracy was established for the determination of variations in the earth's orientation. Finally, new information was obtained on the celestial reference coordinate frame which is of fundamental importance for determining the motions of the earth.

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