1984
DOI: 10.1029/jb089ib02p01077
|View full text |Cite
|
Sign up to set email alerts
|

Postglacial rebound observed by lageos and the effective viscosity of the lower mantle

Abstract: Postglacial rebound appears to have been observed gravitationally by the Lageos satellite. Sixty‐four observations of the orbital node made over a 5‐year time interval reveal an acceleration of ( −8.1±1.8)×10−8 arc sec d−2 due to a source which is not presently modeled in the GEODYN orbit determination computer program. This acceleration cannot be explained by the ocean tide with an 18.6‐year period, assuming it to be an equilibrium tide. Instead it seems to be due to postglacial rebound, which changes the J2 … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

2
82
0
1

Year Published

1986
1986
2017
2017

Publication Types

Select...
4
4
1

Relationship

1
8

Authors

Journals

citations
Cited by 161 publications
(86 citation statements)
references
References 48 publications
2
82
0
1
Order By: Relevance
“…Recent rebound of the Earth's shape after the last glacial period occurs at a measured rate J2 =-2.6"10 -11 year (Rubincam 1984). In case the same rate was typical for the Late Pleistocene, then 35 thous, years BP, ie 15-25 thous.…”
Section: Resultsmentioning
confidence: 95%
“…Recent rebound of the Earth's shape after the last glacial period occurs at a measured rate J2 =-2.6"10 -11 year (Rubincam 1984). In case the same rate was typical for the Late Pleistocene, then 35 thous, years BP, ie 15-25 thous.…”
Section: Resultsmentioning
confidence: 95%
“…The periodic perturbations in the node St, for instance, are far below the residuals level of about 0.03 arc sec of the satellite laser ranging data (Rubincam, 1984, Figure 2). Also, the semimajor axis a is Perturbed at the 5mm level over a period of 833 da y s. This is smaller than the effect of some indivi,lual solar eclipses on the orbit of Lageos.…”
Section: Discussionmentioning
confidence: 99%
“…The zonally symmetric part of the rebound is thought to be responsible for the secular change in the J2 and other gravitational harmonics of the Eax• as seen by LAGEOS and other satellites [Yoder et al, 1983;Rubincam, 1984], and the secular polar motions come from the P21 harmonic of this deformation [Peltier, 1988]. The time constants for the rebound are so long (thousands of years) that even over centuries the polar wander appears to be a linear function of time.…”
Section: Secular and Decadal Polar Motionsmentioning
confidence: 96%