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Showing 73 results for geohazards ...

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St. Louis’ Mid-Century Modern Architecture: The Matter of Materials

• Type: Article

"We generally use the term mid century to differentiate the buildings of the post World War II years from the output of the pre-War years. Mid century is an interesting term. It links architecture in the US to the growth and change resulting from post-War power and prosperity, even as the geo politics of the Cold War cast a haze of uncertainty over the period. Like everything else at mid century, architecture was shaped by these conditions." - Mary Reid Brunstrom

Landslide Risks Along Park Roads Increase in a Warming Climate

• Type: Article

Read the abstract and get the link to an article on how climate change is impacting park roads in Alaska: Lader, R., P. Sousanes, U. S. Bhatt, J. E. Walsh, and P. A. Bieniek. 2023. Climate indicators of landslide risks on Alaska national park road corridors. Atmosphere 14(1): 34.

Coastal Geohazards—Storm Surges

• Type: Article

Storm surge may severely impact coastal geomorphology and inundate park resources. Brought by coastal storms, storm surge can be dangerous and have lasting effects. Coastal areas that remain at low elevation are prone to the effects of storm surge. The magnitude of a storm surge is increased when coupled with sea level rise.

Wrangell - St Elias National Park & Preserve

Taan Fjord Landslide and Tsunami

• Type: Article

Read the abstract and get the link to several articles, including this one published in Scientific Reports: Higman, B., D. H. Shugar, […] M. Loso. 2018. The 2015 landslide and tsunami in Taan Fiord, Alaska. Scientific Reports 8: 12993.

Pyroclastic Flows and Ignimbrites, and Pyroclastic Surges

• Type: Article

Pyroclastic flows and surges are among the most awesome and most destructive of all volcanic phenomena. Pyroclastic flow deposits are found in at least 21 units of the National Park System.

Volcanic Ash, Tephra Fall, and Fallout Deposits

• Type: Article

Volcanic ash, pumice, and tephra ejected in volcanic eruptions ultimately falls back to Earth where it covers the ground. These deposits may be the thin dustings or may be many tens of feet (meters) thick near an eruptive vent. Volcanic ash and tephra can present geohazards that are present great distances from the erupting volcano.

Volcanic Processes—Landslides

• Type: Article

[Site Under Development]

The Day it Rained Rocks

• Type: Article

An interdisciplinary team of researchers studies one of the most massive landslide/tsunamis on record in the hopes of increasing understanding of these large-scale events. Photo: Ground Truth Trekking

Volcanic Processes—Lahars

• Type: Article

Lahars are volcanic mudflows and are among the most destructive of volcanic phenomena. Lahars present significant geohazards since they can travel great distances down river valleys and impact population centers away from the immediate area of a volcano.

Volcanic Hazards in Alaska’s National Parks

• Type: Article

There are over 100 volcanoes in Alaska, 54 of which are considered historically active, and 14 are found in Alaska national parks, preserves, and monuments. The Alaska Volcano Observatory monitors and conducts research on volcanoes in Alaska in order to better understand volcanic processes and determine the likelihood of future volcanic hazards, with a primary goal of informing the public about volcanic hazards and impending volcanic activity. Alaska Park Science 18(1), 2019.

Download Alaska Park Science, Volume 18, Issue 1: 2019

• Type: Article

Alaska is the most geologically active part of North America. Much of the awe-inspiring landscapes of Alaska's parks are created by geologic processes. But sometimes, these processes can be hazardous. Read about earthquakes, tsunamis, landslides, glacier collapses, glacier outburst floods, volcanoes and volcanic eruptions, river ice, erosion, and more. This issue explores the state of the science to understand geohazards in Alaska national parks. Alaska Park Science 18/1:2019

Addressing Earthquake and Tsunami Hazards in Alaska Parks

• Type: Article

The forces that produce hazards such as earthquakes and tsunamis are as much a part of the parks--and the parks' beauty--as wildlife and glaciers. Engaging visitors in learning about and preparing for these hazards serves the dual functions of increasing park safety while also enriching the visitor experience. Alaska Park Science 18(1):2019.

Coastal Dynamics in Bering Land Bridge National Preserve and Cape Krusenstern National Monument

• Type: Article

Arctic coastlines are changing as a result of warming temperatures and decreasing sea ice extent and duration. An understanding of these changes can contribute to the effective management of coastal habitats and ecosystems, oil-spill response, marine debris collection, and the preservation of cultural artifacts. Alaska Park Science 18(1):2019.

Yukon - Charley Rivers National Preserve

Spring Breakup on the Yukon: What Happens When the Ice Stops

• Type: Article

Spring breakup can create flooding and ice-scouring hazards for communities along major rivers in Alaska. This article gives examples of recent flood events along the Yukon River and describes the conditions that created them. Alaska Park Science 18(1):2019.

Glacier Bay National Park & Preserve

An Initial Assessment of Areas Where Landslides Could Enter the West Arm of Glacier Bay, Alaska and Implications for Tsunami Hazards

• Type: Article

Tsunamis generated by landslides in Glacier Bay are uncommon, but have potential to be extraordinarily destructive when they occur. This article identifies areas that are susceptible to landslides that could generate tsunamis and discusses approaches to characterize hazard and risk from these events. Alaska Park Science 18(1):2019.

Denali National Park & Preserve

Paleoseismic Study of the Hines Creek Fault

• Type: Article

Science Summary (2014) - Prehistoric earthquakes left a mark on the world. Now geologist can evaluate the probability and severity of future earthquakes by examining those marks.

Denali National Park & Preserve

Measuring Earth Movements from the Denali Fault

• Type: Article

Science Summary (2012) - On November 3, 2002, a magnitude 7.9 earthquake ruptured the Denali Fault in the rugged Alaska Range...the largest ever recorded in the interior of Alaska. What happened afterwards and what will happen next?

Denali National Park & Preserve

Earthquake Monitoring in Denali

• Type: Article

Science Summary (2012) - With more than 20,000 earthquakes reported annually, Alaska is by far the most seismically active state. Is Denali National Park and Preserve due for a big earthquake soon?

Avalanche!

• Type: Article

In this section Fred tells about the avalanche that killed almost 100 people near Sheep Camp. He also tells about his final push to the Summit of Chilkoot Pass.

Wrangell - St Elias National Park & Preserve

Michael Loso - Geologist

• Type: Article

Michael Loso is a geologist with Wrangell-St Elias National Park and Preserve and a physical scientist (focused on the cryosphere) for the Central Alaska Inventory and Monitoring Network.