Short-period variations in the length of day - Atmospheric angular momentum and tidal components

Details Short-period variations in the length of day - Atmospheric angular momentum and tidal components Short-period variations in the length of day - Atmospheric angular momentum and tidal components

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....9211657l&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Oct. 10, 1987, p. 11657-11661.

Other

10

Angular Momentum, Daytime, Earth Rotation, Periodic Variations, Tides, Earth Atmosphere, Extragalactic Radio Sources, Geodetic Surveys, Very Long Base Interferometry

Scientific paper

Using VLBI observations of extragalactic radio sources, it is now possible to determine the rotational phase angle of the earth (UT1) with an accuracy of 0.1 ms in an observing period of about 1 hour. A 3-month series of daily length-of-day (LOD) values produced from VLBI observations collected under project International Radio Interferometric Surveying (IRIS) during April-July 1984 has been analyzed. Comparison of the IRIS LOD values with variations in the atmospheric angular momentum (AAM) during the same time period revealed quasi-periodic components in both series at about 9, 33, and 58 days, with closely matching phases. The AAM components were removed from the IRIS LOD values, filtered the resulting series to remove variations with periods longer than 35 days, and analyzed the resulting time series to estimate the scaling parameter k/C from the 9.12, 13.66, and 27.56-day tidal components. The results are consistent with similar results from other methods based on much longer time series.

Affiliated with

Also associated with

No associations

Rating

Short-period variations in the length of day - Atmospheric angular momentum and tidal components does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Short-period variations in the length of day - Atmospheric angular momentum and tidal components, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Short-period variations in the length of day - Atmospheric angular momentum and tidal components will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1775898