The long-period motion of the plane of a distant circular orbit

1964 ◽  
Vol 280 (1380) ◽  
pp. 97-109 ◽  
Keyword(s):  
General Solution ◽  
Circular Orbit ◽  
Lunar Orbit ◽  
Long Period ◽  
Gravitational Forces ◽  
Earth’S Oblateness ◽  
Period Motion

We consider Earth satellites in the region where the perturbing effects due to Earth’s oblateness and luni-solar gravitational forces are comparable. A general solution is obtained for simultaneous precession about any number of fixed axes; this is an extension of Laplace’s treatment for the motion of Iapetus about Saturn. Results are given for general orbits on the assumption that the lunar orbit lies in the ecliptic. Synchronous orbits are considered in greater detail.

scholarly journals A Basic Study on Long-period Motion of a Moored Ship

2010 ◽  
Vol 122 (0) ◽  
pp. 195-200
Author(s):  
Toshio ISEKI ◽  
Daisuke KAWAMURA
Keyword(s):  
Basic Study ◽  
Long Period ◽  
Period Motion

IS THERE REALLY NO CONNECTION BETWEEN GRAVITY AND KL→π+π-

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 680-683 ◽  
Author(s):  
D. F. BARTLETT
Keyword(s):  
Long Period ◽  
Gravitational Forces ◽  
Specific Proposal

This work gives a specific proposal for how KL→ππ may be caused by gravitational forces. A consequence is that η+- varies with a very long period.

The first preliminary waves of the Nevada earthquake of December 20, 1932*

1935 ◽  
Vol 25 (1) ◽  
pp. 62-80 ◽  
Author(s):  
Perry Byerly
Keyword(s):  
Sudden Change ◽  
Simple Explanation ◽  
Depth Of Focus ◽  
Time Curve ◽  
P Waves ◽  
Long Period ◽  
First Motion ◽  
Straight Lines ◽  
Suggested Explanation ◽  
Period Motion

Summary The P travel-time curve of the Nevada earthquake is presented. It is drawn as a series of straight lines. It is near Δ = 28° that the data outline most clearly the sudden change in slope of the curve, but definite evidence of overlapping of the branches is lacking. At Δ = 67° (approximately) the curve branches into two parts as did the curve of the Texas earthquake. Between 4° and 12° three parallel P curves are drawn. The suggested explanation of them is that they are due to transformations of an original P or S at boundaries near the focus. This would indicate a depth of focus of about fifteen kilometers. The nature of the first motion at the various stations shows a complex distribution which does not lead to a simple explanation of the forces acting at the focus. A long-period component of P waves is observed, and it is concluded that it is present from very near the beginning of the record, although often masked by shorter-period motion. It begins in opposite phase to the shorter-period motion accompanying it.

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