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The Antarctic deployment is the first in what is hoped to be a series of extreme environment tests for the short-period (SP) sensor – a seismometer that records the high-frequency (high pitched) seismic waves generated by movement in the ice sheets.

A new study found that measuring the time it takes for a radar pulse to travel from a satellite to the sea surface and back again can reveal the thickness of river ice and dates when it is safe to travel on ice roads and bridges in arctic regions.

In late January 2022, Lake Erie nearly froze over entirely, with ice cover growing well beyond the seasonal average to reach 94 percent. By February 3, the ice cover had dropped to about 62 percent before rising again to 90 percent by February 5.

Understanding when and where trees die in vast tropical forests is a challenging first step toward understanding carbon dynamics and climate change.

Air temperatures on Earth have been rising since the Industrial Revolution. While natural variability plays some part, the preponderance of evidence indicates that human activities—particularly emissions of heat-trapping greenhouse gases—are mostly responsible for making our planet warmer.