paragraph1Mobile:"The Juneau Icefield is just north of Juneau, Alaska. In 2016 and 2017, researchers collected ice cores across the icefield to determine if the ice traps records of wildfires.",
promptDesktop:"Hover over the map to explore the topography and learn about coring a glacier.",
promptMobile:"Click on the map below to explore the topography and learn about coring a glacier.",
heading:"How ice cores collected?",
heading:"How are ice cores collected?",
paragraph2:"The ideal location for drilling an ice core is the highest, flattest section of a glacier, as this region minimizes any influence from the glacier flow. Snow builds up layer by layer on a glacier surface and eventually compresses into ice. High, flat drilling locations increase the possibility that ice layers remain horizontal and decreases the possibility of melt layers.",
paragraph3:"Once researchers have arrived at the drilling location, the first thing that they do is to create some sort of shelter for comfort and incase the weather becomes bad. For short (~10 m) ice cores that can be drilled in a day, this shelter is often a snow pit with a bench, as well as a tarp to block blowing wind. Once the pit is dug, scientists can start drilling. The ice core drill has bits called “core dogs” on the bottom that cut into the ice. The drill is a metal cylinder with threads on the outside that help grip the snow and ice. Researchers attach a handle to the top and turn the drill until the have collected a meter of ice. This meter of ice is then passed to the people in the snow pit who are processing the core. This processing entails documenting the ice stratigraphy, measuring the core, and determining its mass. On the Juneau Icefield, cores were not kept in a frozen state, and instead were homogenized and placed into clean labeled bottles. The drilling and processing continue simultaneously, with team members measuring one core section while the next section is being drilled. The ice core drill returns to the initial hole and retrieves the next meter of ice. As the drill goes deeper and deeper into the ice, metal rods are connected to the top of the drill to extend the drill length until eventually reaching ~10 m depth. Pulling up 10 m of metal extension rods, the drill, and the ice core section can be heavy, but allows for a continuous climate record.",
photo010:"Clear, sunny days on the Juneau Icefield are appreciated, and people spend every possible moment outside to enjoy the spectacular scenery.",
