Hoar Frost (IMAGE)

University of Washington

Hoar Frost

Caption

The roof of the tunnel is covered in hoar frost, spiky ice crystals that form as moisture in the air solidifies in the minus 6 degrees C environment of the tunnel. The layers below are colder. Researchers leave presterilized pipes inserted in the floor for future access to the liquid layer below.

Credit

Zac Cooper/University of Washington

Usage Restrictions

With credit

License

Licensed content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.