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Fluids flowing beneath Cascadia

Tags: magnetotelluric , subduction zone

Subduction zones play a crucial role in recycling old oceanic crust, while also carrying water into Earth’s interior. Magnetotelluric imaging can help scientists better see where fluids have accumulated in the crust.

Scientists spy salty groundwater system beneath Antarctic ice stream

Tags: Antarctica , magnetotelluric , seismic imaging

Antarctica’s ice sheets are on the move, with the solid ice flowing toward the surrounding oceans. This exodus toward the coasts, explains Paul Winberry, a seismologist at Central Washington University, is enabled by fast moving ice streams—regions where liquid water located at the interface between the ice and underlying subsurface facilitates an ice sheet’s seaward slide.