I took my thermal camera to Yellowstone, because I’m just that much of a nerd.
1: Old Faithful
2: Mammoth Terraces
3: Orange Spring Mound
4: Boardwalk by Grand Prismatic Spring
5: Firehole River at Midway Geyser Basin. The left side of the river is notably warmer than the right because of the Excelsior Geyser outflow just upstream.
7: Hot Pool Runoff Channels
9: Heat traces underneath the Firehole Lake parking lot. It was a cold, overcast day. A parking lot surface should not have been 40C. This points to something interesting going on under the surface. (It should be noted that this is not the section of Firehole Lake Drive that melted earlier this year…)
10: Temperature gradient at Whirligig Geyser in Norris Geyser Basin. Here, the runoff from two pools joins into a single stream. The green thermophile likes the cooler water on the left side, while the right side is hotter.