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In mid-October, Gabriel Wolken, the Climate and Cryosphere Hazards Program manager for the Alaska Division of Geological and Geophysical Surveys, took a helicopter to Barry Arm. From the air, he conducted a lidar survey, using a laser scanner to measure the topography of the slide area in fine detail, calculating how the landslide has moved and changed since June. The data is still being processed. But, there are new rockfalls in the area every time he visits, indicating the area’s instability. “The rock itself isn’t very competent,” Wolken said. “It’s basically falling apart.”
There's no easy way to gently coax a colossal land mass off the side of a mountain and into the ocean.
Whittier residents are aware of the risk, said Peter Denmark, who runs a commercial kayaking business in town. “With the people around town, there's a laissez-faire attitude about it,” Denmark said. Alaskans have “thick skins” when it comes to disasters, he said. “If it’s not tsunamis, earthquakes, volcanoes, forest fires — it’s one thing or another.” Still, Denmark is taking precautions; he avoids the Barry Arm area on kayaking tours.
Kelly Bender and her husband Mike rely on summer tourism in Prince William Sound. From their waterfront office, she charters water taxis, fishing boats, kayaking and sightseeing tours. Before news of the potential landslide broke, Bender said their fleet went into Barry Arm daily. With its scenic location, near glaciers and a popular beach, the state estimates that 500 people could be in the area at any given time during peak tourist season. Bender has changed tour routes, cancelled water taxi trips — even cancelled a planned wedding. “The danger part of it — people are feeling like ‘we know what to do in a tsunami,’” Bender said. “It’s the business part of it that we’re all really, you know, hanging by a thread.” When tsunami warning sirens blare in Whittier, residents know to move swiftly away from the coast and head to higher ground. The state encourages coastal residents to keep a “go bag” filled with emergency supplies and to plan evacuation routes.
While it’s still possible to avert or mitigate many of the worst impacts of climate change, there really isn’t an option to eliminate landslide-generated tsunamis. The state uses howitzer cannons to trigger controlled avalanches in railway and highway corridors, but there's no easy way to gently coax a colossal land mass off the side of a mountain and into the ocean. “It’s pretty much science fiction,” Higman said. Smaller landslides might be able to be stabilized from the bottom up, but large landslides, like in Barry Arm, “forget about it,” Liljedahl said.
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