100
90
80
70
60
50
40
30
20
10
0
Arica
Iquique
Antofagasta
Caldera
Coquimbo
Valparaiso
Constitucion
San Vincente
Golfo Coronados
Figure 7. Frequency that Waves Arrive from More than One Direction
100
Valparaiso
Golfo Coronados
90
Antofagasta
80
70
60
50
40
30
20
10
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Figure 8. Annual Variation in Frequency of Multi-Directional Wave Conditions
8.
CONCLUSIONS
An investigation into swell wave conditions in the southern Pacific Ocean has been carried out by means of 40-year
wave hindcast using a 2nd generation wave model and wind fields derived from the NCEP/NCAR Re-analysis
Project. The wave studies have clearly shown the complexity and multi-directional nature of the wave conditions
offshore of Chile, which has important implications with respect to nearshore climate, and may significantly impact
coastal engineering works, including port design and sediment transport analyses.
Some initial studies of wave propagation schemes and their impact on the wave modeling results have been
completed with particular emphasis on model computational speed. Various concepts and approaches to the
development of an efficient diffusion operator to address Garden Sprinkler Effect need to be addressed.
Further efforts to improve both the wave model and the Pacific Ocean hindcast are continuing.
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