Waitemata
Data kindly supplied by Ports of Auckland Ltd.
| Time of arrival of first wave* | 25.3 h |
| Time of arrival of highest wave* | 43.1 h |
| Height of the highest wave | 76 mm |
| Period of the highest wave | 55 min |
* hours after the earthquake.
Commentary
The tsunami waves were the smallest of any site; probably because the islands of the Hauraki Gulf protect the harbour from long waves. However, they persisted for several days.
Figure 1. Sumatra tsunami at Waitemata showing:
A. long wave record;
B. height of each wave; and
C. period of each wave.
EQ denotes the time of the earthquake (12:59 on 26 December 2004, NZST),
TOA denotes time of arrival of first waves.
Figure 2. Sumatra tsunami at Waitemata showing:
A. long wave record;
B. significant (red) and maximum (blue) wave heights;
C. period of significant waves; and
D. distribution of significant wave height with time and period.
EQ denotes the time of the earthquake (12:59 on 26 December 2004, NZST).
How were these calculated?
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