09-Feb-2008 Rissaga at Sumner Head
Data kindly supplied by NIWA, ECan, and Christchurch City Council.
Commentary
There was a series of waves in the morning of 9-Feb with periods of about 10 minutes, then the waves dropped slightly for a few hours before rising again. The largest waves occurred at about high tide in the late afternoon. Their period was much longer than the waves that occurred earlier in the day.
