1933 Baffin Bay earthquake northwestern Baffin Bay and northeastern Baffin Island continues to be seismically active. Six magnitude 6 earthquakes have occurred there since 1933. Multiple small earthquakes with magnitudes ~4-5.5 still occur each year. Sources 1933 Baffin Bay earthquake The 1933 Baffin Bay earthquake struck Greenland and the Northwest Territories (now Nunavut), Canada with a moment magnitude of 7.7 at on November 20. The main shock epicenter was located in Baffin Bay on the east coast of Baffin Island. Shaking was only felt at the small town of Upernavik, Greenland. The event is the largest recorded earthquake to strike the passive margin of
Seal Island (Investigator Strait) Seal Island (Investigator Strait) Seal Island is an island located in Investigator Strait off the south coast of Yorke Peninsula in the Australian state of South Australia about south south-west of Stenhouse Bay. Since 1972, it has been part of the Althorpe Islands Conservation Park. Seal Island is about south south-west of Stenhouse Bay. It is described as an ‘elevated hump’ rising to a height of with a series of ‘segmented islets’ at its west side. Seal Island is reported as being best accessed via its north coast and during the ‘calmest weather’. A number of sources consider Seal Island