Earlier last month, a towering 56 foot high tsunami struck a portion of Kenai Fjords National Park in Alaska. While no one was harmed, a boardwalk was damaged, and there are no guarantees that the next similar world event will be so harmless. As, due to rising temperatures and retreating glaciers, patches of unstable cliff faces and slopes are being exposed, creating an increased frequency of landslide generated tsunamis. Such events are likely to occur at an elevated frequency during the next century, including in parts of Alaska, Canada, Iceland, Greenland, Russia, Chile, and Norway.

Thumbnail Photo Credit: This work "KenaiFjordsAlaska1", is a derivative of a photo (resized, cropped, text overlay, overlaid with GeologyHub made graphics (the image border & the GeologyHub logo)) from "Kenai Fjords cruise", by: Deepti Harti, deeptihari, 2016, Posted on Flickr, Flickr account link: https://www.flickr.com/photos/deeptih..., Photo link: https://www.flickr.com/photos/deeptih..., CC BY 2.0. "KenaiFjordsAlaska1" is used & licensed under CC BY 2.0 by    / geologyhub  

Note: This video's thumbnail image does not show the exact area where the tsunami struck, but rather a separate area within Kenai Fjords National Park.

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Sources/Citations:
[1] 2020, Strzelecki, M. C. and Jaskólski, M. W., European Geosciences Union; Arctic tsunamis threaten coastal landscapes and communities – survey of Karrat Isfjord 2017 tsunami effects in Nuugaatsiaq, western Greenland, Nat. Hazards Earth Syst. Sci., 20, 2521–2534, https://doi.org/10.5194/nhess-20-2521..., 2020. CC BY 4.0.
[2] D. Miller, “Giant Waves in Lituya Bay Alaska”, USGS, Geological Survey Professional Paper 354-C.
[3] 2018, Higman, B., Shugar, D.H., Stark, C.P. et al, Springer Nature, Scientific Reports.; The 2015 landslide and tsunami in Taan Fiord, Alaska. Sci Rep 8, 12993 (2018). https://doi.org/10.1038/s41598-018-30..., CC BY 4.0
[4] U.S. Geological Survey
[5] Glen Fergus, 2015, Article link: http://gergs.net/all_palaeotemps/, Photo link: https://i0.wp.com/gergs.net/wp-conten..., CC BY 4.0

0:00 2024 Alaskan Tsunami
0:33 Tsunami Heights
2:18 Retreating Glaciers
2:57 Landslide Cause