Table 2. Secular rates of 1 2 , 13 and 14 and tide coefficients estimated from Lageos 1 and
Lageos2. The reported tide phase if expressed with respect to the equilibrium tide phase.
Case
Satellites
j2 (lO-H) j3 (lO-H) j4 (lO-H) Tide coefficients
C 2m and phase
1
Lageos 1
- 3.20
±0.10
2
Lageos 1,2
- 3.00
- l.74
- 0.81
±0.50
±0.10
± l.50
3
Lageos 1,2
- 2.99
- 1.77
- 0.80
C 21 = 0.145 cm
+ SI tide
±0.55
±0.10
± l.50
phase = -28 0
4
Lageos 1,2
- 3.00
- l.74
-7.50
C 20 = l.79 cm
+ 18.6 yr
±0.60
±0.10
±2.00
phase = +24 0
ocean tide
Table 3. Recent estimates of jn from Laser satellite observations
j 2 (10- 11 ) j 3 (10- 11 )
j 4 (lO-H) j 5 (l0-11)
Source
-2.50
-0.10
0.30
Cheng et at., 1989
±0.30
±0.30
±0.60
(Starlette)
-2.80
Gegout and Cazenave, 1991
±0.40
(Lageos 1)
-2.60
-l.86
Nerem et at., 1993
(Lageos 1)
-2.10
2.30
-0.05
Nerem and Klosko, 1994
±0.30
±0.40
±1.60
(Lageos 1, Ajisai, Starlette)
-2.60
0.00
Eanes and Bettadpur, 1995
±0.30
±l.30
(Lageos 1)
-2.90
Eanes and Bettadpur, 1995
±0.30
(Starlette)
-2.70
-0.40
-l.30
2.10
Cheng et at., 1995
±0.50
±0.70
±l.00
±0.60
(6 satellites)
-2.77
l.57
0.20
Klosko and Nerem, 1995
±0.25
±0.35
±l.46
(Lageos 1,2, Ajisai, Starlette)
-3.00
-1.74
-0.81
This study (case 2)
±0.50
±0.10
±l.50
(Lageos 1,2)
145