Denali National Park saw a significant landslide last week, according to the Alaska Earthquake Center.
Four to six million cubic meters of rock slid down near Avalanche Spire Peak just before noon on Friday, the“The signal we picked up is consistent with what we’ve seen from landslides over the past couple of years,” Ezgi Karasozen, a research seismologist with the Alaska Earthquake Center, said.
“Our detection system is still in development, and at this stage, we feel more confident when there’s been visual confirmation of a slide,” she said. ”That confirmation helps verify the location, gives a rough estimate of the volume, and allows us to check whether our system is staying accurate in these early stages of development.”“Barry Arm was our starting point. It’s been monitored very heavily too. There are lots of instruments. So, we can actually learn a lot from that, but also it was obvious that we need to expand this to be able to detect, cover a larger area to be able to detect the other landslides happening,” Karasozen said about the program before it expanded. Since the program — which is in a test phase — seemed to be working well, in August, the program expanded to most of Southern Alaska and to Denali National Park, Karasozen said last month, just days after it had expanded. “We know that there are lots of reports by lots of other agencies that Barry Arm is not the only landslide we should be concerned about, Karasozen said. ”There is a lot of slopes that are similar to Barry Arm size, or maybe smaller, but is experiencing the same kind of glacier retreats and kind of like slowly moving. That’s why we’re actually concerned." This project is a long way from morphing into a system that could warn people of landslide-triggered tsunamis, but ideally, it would get there in an unknown amount of time down the line. It is still in its test phase, and the project is focused on monitoring landslides at this time, Karasozen told Alaska’s News Source in August. “This landslide risk is getting, you know, a big hazard every year with climate change, warming climates, these glaciers are retreating,” she said. Once glaciers melt or retreat, the sediment that was deposited on it no longer has something to hold it up, sometimes leaving a mass of unstable land sitting above a deep fjord, she explained. “Not just the landslide itself, the tsunami is a big risk. So, it’s like a cascading hazard,” she said, explaining there could be cruise ships in the area or people doing things like kayaking that could be in harm’s way, and waves could travel to coastal towns like Whittier, in the case of the Barry Arm landslide.3 dead after massive flooding in Arizona community; state of emergency declaredSkydivers fall from 11,000 feet, hit ground at up to 45 mph, report saysVIDEO: Bears caught on cam opening truck doors on North SlopeNo injuries, damage reported after landslide, tsunami in Southeast Alaska, Alaska Earthquake Center says
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