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Coastal flooding increases Bay Area traffic delays and accidents

Airborne radar reveals groundwater beneath glacier

Airborne radar reveals groundwater beneath glacier Melting glaciers and polar ice sheets are among the dominant sources of sea-level rise, yet until now, the water beneath them has remained hidden from airborne ice-penetrating radar. With the detection of groundwater beneath Hiawatha Glacier in Greenland, researchers have opened the possibility that water can be identified under other glaciers from the air at a continental scale and help improve sea-level rise projections. The presence of water beneath ice sheets is a critical component currently missing from glacial melt scenarios that may greatly impact how quickly seas rise – for example, by enabling big chunks of ice to calve from glaciers vs. stay intact and slowly melt. The findings, published in 

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