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What is magnitude of completeness?

June 15, 2020

We use the phrase “magnitude of completeness” often when referring to our understanding of seismicity in a region or following a sequence of earthquakes. This value is a simplistic assessment of a catalog of earthquakes.

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What happens in the first 20 minutes after an earthquake?

April 06, 2020

“As far as earthquakes go, for everyone in Alaska, there is someone looking out for you 24/7,” said Ken Macpherson, who manages the Alaska Earthquake Center’s data analyst team.

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COVID-19 updates

March 19, 2020

March 19, 2020 update.    Like all of you, the Alaska Earthquake Center has quickly reconfigured to adhere to public health guidelines while trying to maintain business and operational continuity.

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Unraveling current earthquakes in the western Aleutians

January 26, 2020

We are getting questions about current earthquake activity in the western Aleutians—and with good reason. There are actually two different sequences of earthquakes unfolding right now in the Andreanof and Rat Islands.

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2019 Is Runner Up for the Highest Number of Earthquakes: Alaska Seismicity Summary

January 23, 2020

Seismicity in Alaska had another stand-out year in 2019. With a total of 50,289 reported earthquakes, 2019 finished as a runner up to the record-breaking 2018 (figure 1). The earthquake depths ranged between 0 and 165 miles (265 km).

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Response of the UAF Engineering Building to Jan. 14 earthquake

January 16, 2020

On Tuesday morning a magnitude 3.7 earthquake occurred about 16 miles SW of Ester, rattling folks across the Fairbanks region.

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The Anchorage Earthquake: One Year Later

November 30, 2019

As we approach the one-year anniversary of the M7.1 Anchorage Earthquake on November 30, 2018, we reflect on the scientific and societal impacts of the earthquake.

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Staff Spotlight: Natasha Kozyreva

November 26, 2019

Natasha Kozyreva (or Natasha K. as her colleagues call her) came to Fairbanks in 2005.

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Not all ground-motion sensors are created equal

October 29, 2019

You may be surprised at the diversity of sensors that are able to detect seismic waves.

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Earthquake magnitude classes

October 29, 2019

After an earthquake, you’ll often hear a seismologist say something like “A moderate earthquake has occurred in the southcentral region of Alaska.” But what does that mean?

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