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@akearthquake.bsky.social

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@akearthquake.bsky.social · 6d ago

What’s Shaking Alaska?! When a significant earthquake happens in Alaska, the Earthquake Center is your go-to place for info on where, when, how big, and how widely it was felt. We have a seismologist on duty around the clock! Listen to how they respond to an earthquake: https://bit.ly/3S8UC1D

The title is “What's Shaking Alaska?!” and the text reads “Week of July 22-29, 2026”. A map of Alaska in the background shows dots where earthquakes occurred. Other text reads “650 earthquakes were detected, and 4 earthquakes reported felt.” Circles with arrows pointing to them are labeled “The largest was a magnitude 5.8 earthquake on July 26, southeast of Atka” and “Magnitude 5.0 on July 28, near Kantishna.”
@akearthquake.bsky.social · last wk.

The moment tensor solution ("beach ball") for today's M5.0 quake indicates thrust motion striking NE-SW. The location, depth, and orientation place the earthquake on the Kantishna Hills Anticline, an area of active folding and thrust faulting associated with the larger Alaska Range thrust system.

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@akearthquake.bsky.social · 2w ago

It’s #FieldworkFriday! D24K on the North Slope is prone to flooding. When field team members Celia Chmielowski & Carolyn Parcheta arrived, the hut's batteries were wet and nonfunctional. The team installed a 2nd cooler for new batteries and built a wooden platform in the hut to keep batteries dry.

A solar panel setup standing in a rocky outdoor area under a partly cloudy sky, with a seismic hut nearby connected to the panel. There is one box between them. The word "Before..." is in the top right corner.Inside a seismic hut with six clear, rectangular batteries, each with visible wiring and circuit boards. A high-water line is marked on the wall above them. Additional items include coiled cables and other electrical equipment.Interior of a seismic hut containing two AGM batteries on a wooden shelf. Below the shelf, there a small pile of rocks. Cables are visible on the left side.A person standing outdoors in a natural setting, looking towards a solar panel and seismic monitoring equipment. There are two large boxes next to the hut. Lush greenery surrounds the area, with a partly cloudy sky above.
@akearthquake.bsky.social · 3w ago

It's #FieldworkFriday! A bear damaged B18K: a broken door, wires ripped out, and several 75-pound batteries tossed out of the hut. “Maybe the bear found a nice, cozy den for the winter,” said field engineer Shah Khan. Khan and intern Chloe Crossen repaired the station, and it's back online!

An individual is standing near a damaged seismic station hut on a grassy plain, pointing towards it. Cables and electronic components are visible, scattered on the ground. The cloudy sky forms the backdrop.A damaged seismic station hut with a broken door exposing tangled wires and cables inside, set in a rocky outdoor landscape.The image shows the repaired seismic hut with tan equipment cooler next to it, and in the foreground is a gray box on the ground that covers the seismometer borehole. These structures are surrounded by open fields with a distant horizon. The sky above is clear with some clouds.
@akearthquake.bsky.social · 3w ago

Just last week we posted about the relative rarity of earthquakes in the Y-K Delta region. This evening's shaker, on the western end of the Denali Fault, underscores the message that these rare occurrences help us clarify basic geology and where our hazards lie. https://bit.ly/4wxz3pV

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@akearthquake.bsky.social · 3w ago

It's July, when coastal recreation🎣 and work peak, and landslides🏔️start to become a worry. We have a new interactive StoryMap for your perusal, focusing on landslide–tsunami 🌊 history and active monitoring in coastal Alaska. https://earthquake.alaska.edu/landslide-tsunami-hazards-coastal-alaska

Landslide–Tsunami Hazards of Coastal Alaska | Alaska Earthquake Center

July marks the anniversary of Alaska’s most notorious landslide, Lituya Bay (1958), which generated a devastating tsunami.

earthquake.alaska.edu

@akearthquake.bsky.social · 4w ago

Today's anniversary of the 1958 Lituya Bay landslide and tsunami (still known as the highest tsunami runup ever recorded) and last summer's Tracy Arm event remind us that these hazards persist in coastal Alaska. Learn more about our two varieties of tsunami hazard here: https://bit.ly/4f8Fjxg

Tsunamis in Alaska | Alaska Earthquake Center

In Alaska, tsunamis can strike within minutes of an earthquake. Tsunami awareness and safety are crucial to anyone who lives, works, or travels along Alaska’s coast. Historically, tsunamis generated b...

bit.ly

@akearthquake.bsky.social · 4w ago

It's not often that very-low-frequency earthquake science hits the front page of a newspaper! The role that Alaska Earthquake Center monitoring played in the science is shown on p2. Check out this link to the Geophysical Institute story for an easier-to-read version. https://bit.ly/4vmFBqF

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@akearthquake.bsky.social · 4w ago

When our field team was working out of Bethel a few weeks ago, we were asked if the area had any earthquakes. The answer is “not typically.” So why do we have seismic stations there? Listen to the reasons for tracking where earthquakes are common and uncommon: https://bit.ly/4wxz3pV

The title is “What's Shaking Alaska?!” and the text reads “Week of July 1-8, 2026”. A map of Alaska in the background shows dots where earthquakes occurred. Other text reads “500 earthquakes were detected, and 5 earthquakes reported felt. The largest was a magnitude 4.4 earthquake on July 7 in the western Aleutians.”Map of Alaska showing earthquake hazard zones. Colors indicate chance of damaging earthquake shaking within 100 years: dark red (95%), red (90%), orange (75%), yellow (50%), green (25%), blue (5%). Highest hazard areas are Southcentral and Interior Alaska, and the Aleutian Islands. Key features include the Trans-Alaska Pipeline System, Alaska Railroad, fault lines, and seismic zones. Labels for cities like Anchorage, Fairbanks, and Juneau are visible. Map includes logos for Alaska Earthquake Center and USGS.
@akearthquake.bsky.social · last mo.

Last week, a magnitude 7.5 earthquake devastated Venezuela. Our hearts go out to the people left homeless and those who lost loved ones. In Alaska, small quakes help us forecast where to expect bigger ones and design better infrastructure. Listen here. https://bit.ly/4v5Soxq

The title is “What's Shaking Alaska?!” and the text reads “Week of June 24-July 1, 2026”. A map of Alaska in the background shows dots where earthquakes occurred. Other text reads “600 earthquakes were detected, and 10 earthquakes reported felt. The largest was a magnitude 5.3 on June 28 near Cordova.”
@akearthquake.bsky.social · last mo.

A magnitude 4.9 earthquake south of Kasilof produced weak to moderate shaking at 5:15 pm local time. The earthquake's 35-mile depth and the type of faulting that produced the shaking indicate that the earthquake came from the subducting Pacific Plate as it descends underneath North America.

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