April 11, 1815 Earthquake: Ambon Island, Indonesia

Reference #414:

On April 11 or 12, 1815, there was a strong earthquake at Ambon. Cracks opened and closed in the ground. At Haruku, on Haruku Island, the fort and houses were completely destroyed; the ground cracked. Shocks were felt on the Banda Islands. On the next day, the sea in the vicinity of Ambon became very rough. In two minutes, its level rose to the high high tide mark and fell with the same speed to the low tide mark. [These oscillations in sea level on the east of Indonesia may have been caused by the passage of the air wave, which arose during the eruption of the Tambora volcano, as occurred during the Krakatau eruption in 1883. The tremors of buildings may also have been caused by the air wave, at least partly.]