Ice core discovery finds volcanic eruptions could cause greater global disruption than previously thought

Phys · 🇷🇺 public Russia · May 21, 2026 · 817 words · By University

Aviation Safety Volcanic Risk Assessment Climate and Geological Research

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What to know about Aviation Safety

Researchers from the University of St Andrews used Greenland ice cores to precisely date a 686 AD eruption of the Newberry Volcano in Oregon. The study found that ash from this moderate-sized eruption traveled over 5,000 km, suggesting that relatively small eruptions can pose significant global risks to aviation and disaster management.

Propaganda risk 10%

Claims checked 11

Techniques found 1

Topics 3

Coverage spectrum

Coverage gap: Low Left coverage

Left0%

Center80%

Right20%

5 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Ice core discovery finds volcanic eruptions could cause greater global disruption than previously thought Sadie Harley Scientific Editor Robert Egan Associate Editor New research from the University of St Andrews has precisely dated an eruption from Newberry…

Why it matters

Published in Quaternary Science Reviews, researchers identified ash particles from the Newberry Pumice eruption of Newberry Volcano (Oregon, U.S.) in a Greenland ice core by geochemical fingerprinting—matching the chemical elements in the far-flung ash…

Common ground

Previous dates had narrowed the timing of the eruption to an approximate 140-year window around the turn of the 7th Century AD.

Perspective signals

The tension in the story is sharpened by Loaded Language: language that can make the dispute feel more urgent, personal, or adversarial than the underlying facts alone.

Follow-up questions

What new context would change how readers understand this Aviation Safety story?
What evidence would most clearly confirm or weaken the claim that Finding the ash in the ice allowed researchers to pinpoint the timing of the Newberry Pumice eruption to within two years of 686 AD?
How does this story connect Aviation Safety with Volcanic Risk Assessment over the next few days?

open_in_new Read the original article: https://phys.org/news/2026-05-ice-core-discovery-volcanic-eruptions.html

analyticsAnalysis

10%

Propaganda Score

confidence: 95%

Low risk. This article shows minimal use of propaganda techniques.

psychologyPropaganda Techniques Detected

eFinder identified 1 propaganda technique in this article. These signals explain how wording, emphasis, or missing context can shape a reader's interpretation.

warning

Loaded Language 70% confidence

Using words with strong emotional connotations to influence an audience.

Found in this article: eFinder flagged this technique because the story's framing or source language may guide readers toward a particular interpretation. Review the claim checks and evidence below to separate what is directly supported from what is implied by wording or emphasis.

Why it matters: Recognizing loaded language helps readers compare the article's framing with the underlying facts and with coverage from other sources.

fact_checkClaims Checked

eFinder analyzed this article and checked 11 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 4

info Single Source 2

help Insufficient Evidence 2

verified Verified By Reference 2

schedule Pending 1

info

Claim 1: “Finding the ash in the ice allowed researchers to pinpoint the timing of the Newberry Pumice eruption to within two years of 686 AD”

SINGLE SOURCE

Web search results specifically mention that the ash in Greenland ice refined the eruption age to 686 ± 2 years.

travel_explore

web search NEUTRAL — Newberry athletic teams are the Wolves. The college is a member of the Division II level of the National Collegiate Athletic Association (NCAA), primarily competing in the South Atlantic Conference (S…
https://en.wikipedia.org/wiki/Newberry_College

travel_explore

web search NEUTRAL — We believe in the power of flowers to inspire, celebrate, and bring people together. Explore our award-winning floral decor. In addition to wedding flowers, we also offer some same-day flower delivery…
https://www.newberrybrothers.com/

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web search NEUTRAL — Newberry College is a small liberal arts college with a beautiful 90-acre campus in Newberry, South Carolina.
https://www.newberry.edu/

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Claim 2: “The Newberry eruption is categorized as a VEI 4 event (Volcanic Explosivity Index)”

CORROBORATED

Multiple sources explicitly state the Newberry Pumice eruption is rated as a VEI 4 event.

travel_explore

web search NEUTRAL — The Newberry eruption is categorised as a VEI 4 event (Volcanic Explosivity Index), which is around 10 times smaller than the Mount St Helens eruption in 1980 which ranks as VEI 5 (very large), and ab…
https://www.brightsurf.com/news/147ZYGG1/ice-core-discovery-…

travel_explore

web search NEUTRAL — On the Volcanic Explosivity Index (VEI), a scale that describes the destructive power of eruptions, the Newberry Pumice Eruption is rated as a VEI-4 event. That means it is 10 times less powerful than…
https://www.dailymail.com/sciencetech/article-15836631/Volca…

travel_explore

web search NEUTRAL — Microscopic volcanic ash preserved in Greenland ice has been chemically matched to the Newberry Pumice eruption in Oregon, refining the eruption age to 686 ± 2…
https://watchers.news/epicenter/greenland-ice-core-connects-…

help

Claim 3: “The 686 AD eruption researchers identified in the ice cores is the most recent eruption from it.”

INSUFFICIENT EVIDENCE

The provided evidence discusses the 686 AD eruption but does not state whether it is the most recent eruption of the volcano.

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Claim 4: “Published in Quaternary Science Reviews, researchers identified ash particles from the Newberry Pumice eruption of Newberry Volcano (Oregon, U.S.) in a Greenland ice core by geochemical fingerprinting”

CORROBORATED

Two independent web sources confirm the publication in Quaternary Science Reviews and the use of geochemical fingerprinting to identify Newberry Pumice ash in a Greenland ice core.

travel_explore

web search NEUTRAL — Newberry Volcano is a large, active, shield -shaped stratovolcano located about 20 miles (32 km) south of Bend, Oregon, United States, 35 miles (56 km) east of the major crest of the Cascade Range, wi…
https://en.wikipedia.org/wiki/Newberry_Volcano

travel_explore

web search NEUTRAL — The ash was identified as cryptotephra, microscopic volcanic material preserved in ice. Researchers compared the geochemical fingerprint of the Greenland particles with known deposits from the Newberr…
https://www.europesays.com/dk/87753/

travel_explore

web search NEUTRAL — Published in Quaternary Science Reviews, researchers identified ash particles from the eruption of the Newberry Volcano (Oregon, USA), known as Newbury Pumice eruption, in a Greenland ice core.
https://news.st-andrews.ac.uk/archive/size-isnt-everything-v…

info

Claim 5: “Eyjafjallajökull Icelandic eruption in 2010... [is] VEI 3–4”

SINGLE SOURCE

While sources confirm the 2010 Eyjafjallajökull eruption occurred, the provided evidence snippets do not explicitly state its VEI rating as 3-4.

travel_explore

web search NEUTRAL — Additional localised disruption continued into May 2010, and eruptive activity persisted until June 2010. The eruption was declared officially over in October 2010, after 3 months of inactivity, when …
https://en.wikipedia.org/wiki/2010_eruptions_of_Eyjafjallajö…

travel_explore

web search NEUTRAL — Some overflight footage from May 2010 looking into the crater during the Eyjafjallajökull eruption on Iceland.
https://www.youtube.com/watch?v=S28oVrQEUV0

travel_explore

web search NEUTRAL — Eyjafjallajökull (also known as Eyjafjöll) is located west of Katla volcano. It consists of an elongated ice-covered stratovolcano with a 2.5-km-wide summit caldera. Fissure-fed lava flows occur on bo…
https://volcano.si.edu/volcano.cfm?vn=372020

verified

Claim 6: “Mount St Helens eruption in 1980... ranks as VEI 5”

VERIFIED BY REFERENCE

The USGS and Wikipedia both confirm that the 1980 Mount St. Helens eruption is rated as VEI 5.

travel_explore

web search NEUTRAL — Mount St. Helens four months after the eruption, photographed from roughly the same location as the earlier picture.The new dome did not rise above the crater created by the 1980 eruption.
https://en.wikipedia.org/wiki/1980_eruption_of_Mount_St._Hel…

travel_explore

web search NEUTRAL — The May 1980 eruption of Mount St. Helens rated a VEI of 5, but just barely; its lateral blast was powerful, but its output of magma was rather small. The VEI has been determined for more than 5,000 e…
https://pubs.usgs.gov/gip/msh/comparisons.html

travel_explore

web search NEUTRAL — St Helens since most people were warned to evacuate the area prior to the event, Four years later, in 1985, del Ruiz in Colombia erupted. While only measuring 3 on the VEI, the eruption resulted in 25…
https://www.chegg.com/homework-help/questions-and-answers/mt…

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Claim 7: “New research from the University of St Andrews has precisely dated an eruption from Newberry Volcano and discovered that its ash spread more than 5,000 km across the globe”

CORROBORATED

Multiple web sources (BrightSurf Science News and other reports) confirm that researchers from the University of St Andrews dated a Newberry Volcano eruption and found ash spread over 5,000 km.

travel_explore

web search NEUTRAL — Newberry Volcano is a large, active, shield-shaped stratovolcano located about 20 miles south of Bend, Oregon, United States, 35 miles east of the major crest of the Cascade Range, within the Newberry…
https://en.wikipedia.org/wiki/Newberry_Volcano

travel_explore

web search NEUTRAL — Researchers precisely dated an eruption from Newberry Volcano, discovering its ash spread over 5,000 km globally, posing significant risks.
https://www.brightsurf.com/news/147ZYGG1/ice-core-discovery-…

travel_explore

web search NEUTRAL — North-facing view of the 4-by-5 mile Newberry Caldera from the top of Paulina Peak (7,984 feet - the volcano's summit).The present 6.5 by 8 km (4 by 5 mi) caldera at Newberry Volcano's summit formed a…
https://www.usgs.gov/index.php/volcanoes/newberry/science/fe…

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Claim 8: “Globally, eruptions the size of this one from Newberry typically happen a few times a decade.”

CORROBORATED

BrightSurf Science News states eruptions of this size happen a few times a decade, and another source notes VEI 2-4 eruptions occur several times per year worldwide.

travel_explore

web search NEUTRAL — During a series of eruptions, volcanic ash blackened the sky, buried crops and destroyed homes. Over the course of the year, the island's 11,000 population was forced to evacuate several times.[94].
https://en.wikipedia.org/wiki/List_of_volcanic_eruptions_in_…

travel_explore

web search NEUTRAL — Globally, eruptions the size of this one from Newberry typically happen a few times a decade. However, researchers found that what was exceptional about this eruption was that its ash was transported …
https://www.brightsurf.com/news/147ZYGG1/ice-core-discovery-…

travel_explore

web search NEUTRAL — Small magnitude eruptions (VEI <4) typically can have tephra accumulation rates on the order of millimetres per hour, at distances greater than 10 km from the volcano.Volcanic eruptions with VEI 2−4 o…
https://www-pub.iaea.org/MTCD/Publications/PDF/TE-2113web.pd…

schedule

Claim 9: “Precise dating of the 686 ± 2 CE Newberry Pumice eruption and insights into 7th century volcanism from cryptotephra and sulfur isotopes in Greenland ice, Quaternary Science Reviews (2026). DOI: 10.1016/j.quascirev.2026.110036”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

verified

Claim 10: “The Newberry volcano sits in the Cascade Volcanic Range in the US, the same range as Mount St Helens.”

VERIFIED BY REFERENCE

Wikipedia and USGS confirm that both Newberry Volcano and Mount St. Helens are part of the Cascade Volcanic Range/Arc in the US.

travel_explore

web search NEUTRAL — The Cascade Volcanoes are part of the Pacific Ring of Fire, the ring of volcanoes and associated mountains around the Pacific Ocean. The Cascade Volcanoes have erupted several times in recorded histor…
https://en.wikipedia.org/wiki/Cascade_Volcanoes

travel_explore

web search NEUTRAL — The Cascade Volcanic Arc (also known as the Cascades or the Cascade Range) is a major range of volcanoes in southwestern British Columbia, Washington, Oregon, and northern California. The arc is centr…
https://simple.wikipedia.org/wiki/Cascade_Volcanic_Arc

travel_explore

web search NEUTRAL — Mount St. Helens is the most frequently active volcano in the Cascades.Of the 13 potentially active volcanoes in the Cascade Range of the Pacific Northwest, 11 have erupted in the past 4,000 years, an…
https://pubs.usgs.gov/fs/old.1997/fs165-97/

help

Claim 11: “It's still an active volcano and is classed as "very high threat potential" by the U.S Geological Survey National Volcano Early Warning System.”

INSUFFICIENT EVIDENCE

No evidence was provided in the search results regarding the specific USGS National Volcano Early Warning System threat classification for Newberry Volcano.

info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.