Natural Disasters, July 9

869 A magnitude 8.6 M earthquake and tsunami struck the area around Sendai in the northern part of Honshu, Japan
1956 A 7.7 Megawatt Amorgos earthquake triggered a tsunami that affected the Aegean Sea. The mainshock was followed minutes later by a 7.2 Megawatt aftershock. 53 people were killed.
1958 A 7.8 Megawatt strike-slip earthquake in Alaska caused a landslide that produced a megatsunami in the Lituya Bay. A wave was recorded at 524 meters high, the largest in recorded history. Only 5 people were killed.

A strike-slip earthquake is an earthquake caused by movement and energy release from a strike-slip fault. A strike-slip fault is a vertical fault and the blocks move horizontally. A fault is a fracture in the earth’s crust and the crust on either side of the fracture are called blocks or plates.


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