Deep-Ocean Tides in the South-West Indian Ocean . . .
163
09/12 10/12 11/12 12/12 01/13 02/13 03/13 04/13 05/13 06/13 07/13 08/13 09/13 10/13 11/13 12/13
0
10
20
30
40
Amp. (cm)
Center Time
K2
100
110
120
130
140
Amp. (cm)
M2
40
50
60
70
80
Amp. (cm)
S2
0
10
20
30
40
Amp. (cm)
N2
09/12 10/12 11/12 12/12 01/13 02/13 03/13 04/13 05/13 06/13 07/13 08/13 09/13 10/13 11/13 12/13
0
90
180
270
360
Center Time
K2
0
90
180
270
360
M2
0
90
180
270
360
S2
0
90
180
270
360
N2
lmc 5a–1520m (882 mab)
lmc 5a–1975m (427 mab)
lmc 6–985m (1706 mab)
lmc 6–1960m (731 mab)
lmc 6–2650m (41 mab)
Phase ( )
Phase ( )
Phase ( )
Phase ( )
Fig. 8 Amplitudes (left, cm) and phases (right, ◦ ) of semidiurnal tidal constituents during LOCO 6
obtained from MT_TIDE. Labels indicate the site name, mean depth, and depth in meters-abovebottom (mab)
09/12 10/12 11/12 12/12 01/13 02/13 03/13 04/13 05/13 06/13 07/13 08/13 09/13 10/13 11/13 12/13
0
5
10
15
20
Amp. (cm)
Center Time
K1
0
5
10
15
20
Amp. (cm)
O1
0
5
10
15
20
Amp. (cm)
P1
0
5
10
15
20
Amp. (cm)
Q1
09/12 10/12 11/12 12/12 01/13 02/13 03/13 04/13 05/13 06/13 07/13 08/13 09/13 10/13 11/13 12/13
0
90
180
270
360
Center Time
K1
0
90
180
270
360
O1
0
90
180
270
360
P1
0
90
180
270
360
Q1
lmc 5a–1520m (882 mab)
lmc 5a–1975m (427 mab)
lmc 6–985m (1706 mab)
lmc 6–1960m (731 mab)
lmc 6–2650m (41 mab)
Phase ( )
Phase ( )
Phase ( )
Phase ( )
Fig. 9 As Fig. 8 for the diurnal frequencies
summarizes the MT_TIDE average amplitudes, phases and standard deviations of
these eight tidal components.
Similar amplitudes and phases during the LOCO 6 period are shown in Figs. 8
and 9. The single BPR that was present in this period, 41 m above the bottom, at
lmc6 (red curves), again has very stable tidal amplitudes and phases, in line with
those obtained for the LOCO 4 period.