Results 161 to 170 of about 215,132 (193)
Evidence for faulting and fluid-driven earthquake processes from seismic attenuation variations beneath metropolitan Los Angeles. [PDF]
Sci RepNardoni C, Persaud P.
europepmc +1 more source
Quantum sensing for NASA science missions. [PDF]
EPJ Quantum TechnolMercer CR +6 more
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Review: T. G. Gribble, Handy Methods of Geodetic Astronomy for Land Surveyors
, 1925 openaire +1 more source
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GEODETIC ASTRONOMY IN THE NEXT DECADE
Survey Review, 1977AbstractThe paper discusses methods of determining azimuth and geoid height, recent tests of the possibility of using Doppler observations to artificial satellites to replace azimuth observations, and recent tests of inertial surveying equipment. It also discusses future instrumentation. It concludes that, for most purposes, Laplace azimuth observation
A R Robbins
exaly +2 more sources
Survey Review, 1967
Abstract This is a review article which explains and distinguishes between the different time systems now in use, and shows how modern time signals are controlled and how the geodesist should use them. The work and recent history (in context) of BIH, SIR, SIL, and IPMS are outlined.
A R Robbins
exaly +2 more sources
Abstract This is a review article which explains and distinguishes between the different time systems now in use, and shows how modern time signals are controlled and how the geodesist should use them. The work and recent history (in context) of BIH, SIR, SIL, and IPMS are outlined.
A R Robbins
exaly +2 more sources
Geodetic astronomy in the united states
Bulletin Geodesique, 1935The astronomical work of the U. S. Coast and Geodetic Survey is concerned mainly with the astronomy of position. Much of its work isbased on the labors of those who compile the standard star catalogues and determine the other fundamental constants on which the nautical almanacs and ephemerides of the world are based.
Walter D Lambert
exaly +2 more sources
A first step for the French Geodetic and Fundamental Astronomy Virtual Observatory
, 2006 Activities linked to VO within the french geodetic and fundamental astronomy community started in 2005, through two pilot projects, led at OCA-GRGS and OP-GRGS. They are based on visualisation and analysis software of geodetic products -Earth Orientation Parameters, polar motion, station positions, in particular- to make a new science be possible.
Barache, Christophe +11 more
core +6 more sources
Geodetic astronomy and modern astrometry developments
AIP Conference Proceedings, 2008The connection area between astrometry and geodesy is represented by geodetic astronomy. In the last decades, reason to continuous scientifically development, astronomical geodesy had to response to many complex and various necessities.
Octavian Badescu +7 more
openaire +1 more source
2023
Anomalous refraction is a part of astronomical refraction that cannot be explained by the radial-symmetric refraction model. Absolute ground-based astrometric observations are significantly affected by anomalous refraction, as it causes additional angular displacements of observed stars.
Varna, I., Mitrofanovs, I., Zarins, A.
openaire +2 more sources
Anomalous refraction is a part of astronomical refraction that cannot be explained by the radial-symmetric refraction model. Absolute ground-based astrometric observations are significantly affected by anomalous refraction, as it causes additional angular displacements of observed stars.
Varna, I., Mitrofanovs, I., Zarins, A.
openaire +2 more sources