http://www.islandnet.com/~see/weather/events/life-80.htm
One of the most notable traits of the day, remembered by both Toole and Blezard, was the enhanced audibility and crystal clarity of sounds due to the denser air and absence of wind. In addition, the strong surface temperature inversion bent the sound waves back toward the surface, thus causing sounds to hug the ground.
The freezing of one's breath produced a continuous hissing sound similar to dry blowing snow, and a tinkle when the ice crystals hit the ground. Thin ice when broken sounded exactly like breaking glass. The contraction of ice covering the nearby river was also very apparent. "Ice in the White River about a mile east of the airport, cracked and boomed loudly, like gunfire," reported Toole.
"At 80 below, the talking of the Indians and the barking of dogs in the village could be plainly heard at the airport four miles away," recalled Blezard. "An aircraft that flew over Snag that day at 10,000 feet [3050 m] was first heard when it was over 20 miles [32 km] away. Later, when overhead, still at 10,000 feet, the engine roar was deafening. It woke everyone who was sleeping at the time, because they thought the airplane was landing at the airport."







