All articles tagged with #hudson bay
The Hudson Bay region in Canada has a gravity anomaly, causing people to weigh slightly less than they do anywhere else in the world. The anomaly is caused by missing mass, likely due to events during the last Ice Age, and activity well below the Earth's surface, such as the rising and falling of magma creating convection currents that can drag down continental plates.
Researchers have discovered that everything weighs slightly less in an area of upwards of 500,000 square miles surrounding Canada's Hudson Bay region. The cause of this anomaly is reduced molten magma under the surface of the region, squished out by pressure above-ground from two gigantic glaciers during the last ice age. While the Laurentide Ice Sheet theory and data from GRACE account for some of the reasons there is missing gravity over Canada, they only explain roughly 25-45 percent of the gravitational difference. Scientists estimate that the remaining 55-75 percent is down to a theory to do with convention.