Wellington 

Data kindly supplied by CentrePort Wellington and Greater Wellington Regional Council

Sumatra Tsunami at Wellington
Time of arrival of first wave* 24.3 h
Time of arrival of highest wave* 51.9 h
Height of the highest wave 235 mm
Period of the highest wave 31 min

* hours after the earthquake.

Commentary

The tsunami waves excited the 26-minute seiche which lasted for days. A second group of waves arrived on 30 December, but these cannot be distinguished from meteorologically-generated long waves.

Figure 1. Sumatra tsunami at Wellington 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 Wellington 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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