Walruses are sort of the Goldilocks of the North Pole the chunks of sea ice they call home must be just right. If the ice floe is too large, the walrus…Read More »
can't get to water quickly enough to escape a polar bear attack; too small, and the ice can't support their weight and the walruses go splashing into the sea.
Now, a new technique for mapping the 3D structure of Arctic ice promises to help researchers better understand the habitat needs of walruses and other wildlife. The 3D ice maps could also aid in planning shipping routes, research cruises and other Arctic endeavors, said Chandra Kambhamettu, a computer scientist at the University of Delaware who developed the technique.
Every year, there are thousands of cyclones in the Arctic, some with hurricane-force winds. Before satellites spotted these storms, sailors would return from the North with tales of massive squalls appearing out of nowhere, creating waves up to 36 feet (11 meters) high.
In late November, an artificial flood raced through the iconic Grand Canyon, temporarily transforming the clear blue water back to its historic copper…Read More »
color. The first of several planned floods, the Department of the Interior ordered the deluge, released in a gush from the Glen Canyon Dam starting Nov. 19, to rebuild habitat along the Colorado River.
Under the 2-mile-thick layer of ice on a desolate, remote plain in Antarctica lies a lake that has been buried for millennia. Scientists with the British…Read More »
Antarctic Survey are currently camped out above that lake, engaged in an effort, years in the making, to drill down and take water samples from the lake, to see if it holds any forms of life.
Lake Ellsworth is about 7 miles long, a mile wide and 500 feet deep (11 kilometers by 1.6 kilometers by 152 meters). Because the lake has been sealed off by a thick blanket of ice for up to 1 million years before modern humans evolved scientists think microbes or other forms of life in the water could have evolved in interesting ways to deal with an isolated environment away from sunlight.