Tsunamis Associated with the Earthquake under the Ocean near Sakhalin
The main shock (M6.4) of the recent seismic activity caused tsunamis observed in Wakkanai and Rumoi. Waveforms observed at the tidal observatories are shown in the upper right figure. Observed values are shown in the table below. A maximum tsunami height of 0.2m was observed in Wakkanai and Rumoi.
Upper figures: (Left) Locations of tidal observatories (Right) Waveforms observed at the tidal observatories
In the right figure, the dotted line shows the time of the main shock, blue arrow shows the arrival time of the first tsunami, and red inverted triangles show the times of the highest wave.
Lower Table: Observed values associated with the this earthquake
Observed values at the tidal observatories where tsunamis were observed are shown.
*: Hokkaido Regional Development Bureau
The figures in the table are preliminary and may change after further research.
Japan Meteorological Agency
[Seismic Activity for July 2007 (August 8, 2007)]