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Hudson Bay

All articles tagged with #hudson bay

science1 month ago•11 min saved

Canada’s gravity puzzle: mantle dynamics take the lead over ice rebound

GRACE satellite data show that the Hudson Bay gravity low cannot be explained by glacial rebound alone; older ice-sheet models account for only about 25–45% of the anomaly, leaving a substantial portion attributed to deep mantle structure and slow convection beneath Laurentia. The mantle’s buoyancy and deep-root dynamics, not surface ice history, appear to shape the regional gravity field, though quantifying the split depends on rebound modeling and longer observation records from GRACE Follow-On.

via Space Daily|

#grace #gravity #hudson-bay

animals5 months ago•59 min saved

Mud Nap Moment: Polar Bear Family Rests Amid Summer Heat Along Hudson Bay

A moody shot by Christopher Paetkau shows a polar bear mother with three cubs napping on mud along Canada’s Hudson Bay coast in the summer heat. The image is shortlisted for Wildlife Photographer of the Year Nuveen People’s Choice Award 2026 and highlights how shrinking sea ice from climate change is forcing polar bears to spend more time on land in search of food.

via Live Science|

#animals #canada #climate-change

science3 years ago•2 min saved

Gravity Anomaly in Hudson Bay Causes Weight Difference in Canada

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.

via IFLScience|

#earths-mass #gravity-anomaly #hudson-bay

science3 years ago•3 min saved

The Surprising Reason Why Canadians Weigh Less Than Anyone Else.

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.

via Daily Mail|

#canada #grace-satellites #gravity