geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Long-term polar motion on a quasi-fluid planetary body with an elastic lithosphere Semi-analytic solutions of the time-dependent equation


, : Long-term polar motion on a quasi-fluid planetary body with an elastic lithosphere Semi-analytic solutions of the time-dependent equation. Icarus 220(2)

In order to understand long-term polar motion (so-called true polar wander), I present a large-scale and time-dependent solution of the Liouville equation based on the quasi-fluid approximation. The formulation includes the stabilizing effect of an oblate fossil shape memorized in an elastic lithosphere. Reorientation is assumed to be driven by a surface mass excess that is axi-symmetric and grows linearly with time. Without a fossil bulge, the time scale of true polar wander (specifically the time scale to settle to an equilibrium state) depends mainly on the time to build the load and its final magnitude. A fossil bulge works against reorientation such that the initial latitude of load emplacement now also influences the time scale. I conclude that it is necessary to consider where a load is emplaced in order to reconstruct paleo-poles on a planetary body with a remnant rotational bulge. To demonstrate a large-scale and time-variant solution of long-term polar motion . To include the stabilizing effect of an oblate fossil shape in an elastic lithosphere (85). The initial load latitude governs the time scale in a result with a fossil bulge. (81).

US$19.90

DOI: 10.1016/j.icarus.2012.05.024


Other references

Skobelkin, O.K.; Chegin, V.M.; Velikiĭ, P.Ia., 1988: Comparative evaluation of the results of the treatment of patients with acute suppurative lactation mastitis. Klinicheskaia Khirurgiia: 21-23

Komdeur, R.; van der Werf, T.S.; Ligtenberg, J.J.; Tulleken, J.E.; Zijlstra, J.G., 2000: Hemodynamic and ventilatory complications of mechanical ventilation with high intrinsic positive end-expiratory pressure. In three mechanically ventilated patients ventilatory and circulatory complications resulted from high levels of intrinsic positive end-expiratory pressure (PEEPi): progressive pulmonary hyperinflation due to impairment of the expiration. PEEPi wa...

Mayrsohn H.; Crabtree J.H., 1976: Source reconciliation of atmospheric hydro carbons. Atmospheric Environment 10(2): 137-143

Brajczewska-Fischer, W.; Ryzewska, A.G.; Nowosielska-Roszkowska, E., 1975: The role of sensitized macrophages in induction of specific cell mediated cyto toxicity. Rat T [thymus-derived] lymphocytes (cortisone-resistant thymocytes) preincubated with syngeneic macrophages sensitized to bacillary antigens (Mycobacterium tuberculosis), and then cultured with specific antigen PPD [purified protein derivative] tr...

Fink, J.W.; Paine, S-Jane.; Gander, P.H.; Harris, R.B.; Purdie, G., 2011: Changing response rates from Māori and non-Māori in national sleep health surveys. New Zealand Medical Journal 124(1328): 52-63

Gaddy L.L.; Smathers G.A., 1980: The vegetation of the congaree swamp national park south carolina usa. Veroeffentlichungen des Geobotanischen Institutes der Eidgenoessische Technische Hochschule Stiftung Ruebel in Zuerich 69: 171-182

Nagy, T.R.; Prince, C.W.; Li, J., 2001: Validation of peripheral dual-energy X-ray absorptiometry for the measurement of bone mineral in intact and excised long bones of rats. We evaluated the precision and accuracy of peripheral dual-energy X-ray absorptiometry (DXA) for the measurement of bone mineral density (BMD) and bone mineral content (BMC) in intact and excised femurs and tibias from rats. Thirty-one Sprague-Daw...

Yamada K.; Takahashi K.; Ohkuma H.; Itagaki T.; Yamagishi K.; Nishimura T.; Uyama M., 1991: Laser photocoagulation for experimental choroidal neovascularization. Investigative Ophthalmology & Visual Science 32(4): 1232

Shevchenko, V.V.; Grinikh, L.I.; Protopapova, E.M.; Grigor' eva, G.A., 1973: The mutagenic effect of 1,4-bisdiazoacetylbutane and 8-ethoxycaffeine on Arabidopsis thaliana. Both mutagens caused only a slight increase in the percentage of recessive embryonic lethals.

Dustin, P.; Bartman, J., 1961: Anatomo-clinical research on splenic hyalinosis in the child. Revue Belge de Pathologie et de Medecine Experimentale 28: 152-170