GLOBAL SET
EXTENDED TIDE MODEL
TIDES
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
TIDES 20 .29
----+----0----+----0----+----0----+----0----+----0----+----0----+----0----+----0
COLUMNS FORMAT DESCRIPTION DEFAULT VALUE & UNITS
1-5 A5 TIDES - Modifies Earth tide K2 ampl/K2 phase/
perturbation and requests application K3 phase
of pole tide. The default model for standard
tides is the one that applies K2 amplitude,
K2 phase and K3 amplitude. An extended model
may also be used in GEODYN. The description
follows the default model
7-8 I2 Indicates which tidal coefficient 0
to be modified.
VALUE COEFFICIENT
20 K2 amplitude
21 K2 phase
30 K3 amplitude
A value of 0 sets all coefficients
(K2 amplitude, K2 phase and
K3 amplitude) to zero. [1]
9-10 I2 A value of 1 means that the pole tide is 0
applied to correct the station positions.
(stations only)
25-44 D20.8 Value of tidal parameter being
modified. Defaults:
COEFFICIENT VALUE
K2 amplitude 0.29 0.29 [2]
K2 phase 2.5 degrees 2.5 [2] DEG
K3 amplitude 0.0 0.
45-59 D15.3 Standard deviation of tidal 0.
coefficient. If non-zero value is
specified, tidal parameter will be
adjusted.
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
TIDES 2 0 2 00.30190 -0.00000 1.0 1.0
----+----0----+----0----+----0----+----0----+----0----+----0----+----0----+----0
1-5 A5 TIDES - Description of the extended model
7-8 I2 Must be zero to assume the extended model.
11-12 I2 Forcing degree
13-14 I2 Forcing order
21-22 I2 Receiving degree
23-24 I2 Receiving order
25-44 D20.8 "A" coefficient. 0.
45-59 D15.3 "B" coefficient. 0.
60-72 D13.1 Sigma "A". [NOTE 3] 0.
73-80 D8.2 Sigma "B". [NOTE 3] 0.
NOTE [1]: It is sufficient to turn on the pole tide in one card (even if more
TIDES option cards are included in the setup).
NOTE [2]: These default values apply only to earth tracking stations. In case
of other planetary stations the default values are zero.
NOTE [3]: Convention for adjusting standard tides:
1. If there is no sigma on any TIDES card, there will be no adjustment
of the standard tides.
2. If there is a sigma in one of the TIDES cards, GEODYN applies that sigma
to the parameter, and all the other parameters will be assigned a sigma=
1.D-20
UNITS: KM =Kilometers; M =Meters ; S =Seconds ; M/S=Meters per second
DEG=Degrees ; RAD=Radians ; AS =Arc seconds; MAS=Milli-arc seconds
IF CARD OMITTED: Default values given above are used, and pole tide will not
be applied.
Despina Pavlis
July 2004