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
Another Day in the Diamond average score of 7.5/10 based on 10 reviews. The episode was seen by 3.07 million viewers in the United States on its original air date, far below the previous episodes ratings of 4.09 million viewers. Another Day in the Diamond "Another Day in the Diamond" is the second episode of the fourth season of the post-apocalyptic horror television series "Fear the Walking Dead", which aired on AMC on April 22, 2018. This marks the first appearance of Jenna Elfman as June, but she would go under the alias Naomi for the remainder of the first half until she reveals her