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 Tale of Ekati Tale of Ekati (foaled March 31, 2005]) is a retired Thoroughbred racehorse. The brown colt's sire is Tale of the Cat by leading sire Storm Cat. His dam, Silence Beauty (half sister to the champion mare Sky Beauty out of Maplejinksy), is by Sunday Silence. Tale of Ekati is owned by his breeder, Canadian geologist Charles E. Fipke and trained by Barclay Tagg who, in 2003, went two thirds of the way towards the Triple Crown with Funny Cide. At two, Tale of Ekati won the 2007 Belmont Futurity Stakes. At three he won the Jerome Handicap