Permafrost by permafrost. Of this area slightly more than half is underlain by continuous permafrost, around 20 percent by discontinuous permafrost, and a little less than 30 percent by sporadic permafrost. Most of this area is found in Siberia, northern Canada, Alaska and Greenland. Beneath the active layer annual temperature swings of permafrost become smaller with depth. The deepest depth of permafrost occurs where geothermal heat maintains a temperature above freezing. Above that bottom limit there may be permafrost, whose temperature doesn't change annually—"isothermal permafrost". Permafrost typically forms in any climate where the mean annual air temperature is less than the
Tale of Ekati first. He is named for the Ekati Diamond Mine, discovered by a group which included Fipke. After three straight poor performances, in May 2009 Tale of Ekati was retired from racing. He was sent to Darby Dan Farm to stand stallion duties. His top progeny include 2015 Preakness runner-up Tale of Verve, 2017 Louisiana Derby winner Girvin, Comely Stakes winner Verve's Tale (Tale of Verve's full sister), graded stakes placed Tale of S'avall, and 2015 Davona Dale Stakes winner Ekati's Phaeton. His 2017 stud fee is $7,500. Tale of Ekati Tale of Ekati (foaled March 31, 2005]) is a retired