'Seismic champagne effect' may explain why fires break out long after earthquakes

Phys · Jun 09, 2026 · 795 words · By Shinshu University

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What to know about 'Seismic champagne effect' may explain why fires break out long after earthquakes

The article discusses a study by Professor Yuji Enomoto proposing the 'delayed seismic champagne effect' to explain fires that occur after earthquakes. The research suggests that methane gas trapped in soft sediment can be released and ignite long after the initial seismic event, as potentially occurred during the 2024 Noto Peninsula earthquake.

Propaganda risk 0%

Claims checked 9

Techniques found 0

Topics 0

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

'Seismic champagne effect' may explain why fires break out long after earthquakes Gaby Clark Scientific Editor Robert Egan Associate Editor Following the devastating urban fire that broke out in Wajima City after Japan's 2024 Noto Peninsula earthquake,…

Why it matters

While previous studies have linked earthquakes to secondary disasters such as tsunamis and infrastructure failures, the possible role of underground methane release has remained poorly understood.

Common ground

Now, a new study by Professor Emeritus Yuji Enomoto of the Faculty of Textile Science and Technology at Shinshu University, Japan, published in Natural Hazards on April 22, 2026, proposes a previously unrecognized earthquake-related hazard mechanism involving…

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Follow-up questions

What concrete event or decision sits underneath the headline: 'Seismic champagne effect' may explain why fires break out long after earthquakes?
What evidence would most clearly confirm or weaken the claim that a new study by Professor Emeritus Yuji Enomoto of the Faculty of Textile Science and Technology at Shinshu University, Japan, published in Natural Hazards on April 22, 2026?
What should readers watch for in the next update to know whether the story is changing?

open_in_new Read the original article: https://phys.org/news/2026-06-seismic-champagne-effect-earthquakes.html

analyticsAnalysis

Propaganda Score

confidence: 100%

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

fact_checkClaims Checked

eFinder analyzed this article and checked 9 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

info Single Source 4

check_circle Corroborated 4

help Insufficient Evidence 1

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Claim 1: “a new study by Professor Emeritus Yuji Enomoto of the Faculty of Textile Science and Technology at Shinshu University, Japan, published in Natural Hazards on April 22, 2026”

SINGLE SOURCE

The claim refers to a study by Professor Yuji Enomoto published in Natural Hazards on April 22, 2026. While the content of the study is referenced in other results, the specific publication date and author details are only found in the context of the study's summary (EurekAlert/Research Square context). Note: The date 2026 is in the future relative to current real-time, but per instructions, I trust the provided evidence.

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web search NEUTRAL — Professors often conduct original research and commonly teach undergraduate, postgraduate, or professional courses in their fields of expertise. In universities with graduate schools, professors may m…
https://en.wikipedia.org/wiki/Professor

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web search NEUTRAL — A professor is an accomplished and recognized academic. In most Commonwealth nations, as well as northern Europe, the title professor is the highest academic rank at a university.
https://simple.wikipedia.org/wiki/Professor

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web search NEUTRAL — Academic ranks in the United States are the titles, relative importance and power of professors, researchers, and administrative personnel held in academia.
https://en.wikipedia.org/wiki/Academic_ranks_in_the_United_S…

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Claim 2: “unusual post-earthquake phenomena observed in Wajima, including uplifted manholes, seafloor bubble emissions offshore, and widespread ground fissures”

CORROBORATED

Uplifted manholes and seafloor gas/bubble emissions are mentioned in the Research Square paper and the 'Amplified ground shaking' study, while Wikipedia confirms significant coastal uplift in Wajima.

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web search NEUTRAL — coastal uplift.[32] Uplift at Kaiso Fishing Port in Wajima by 4 m (13 ft) exposed parts of the seafloor.[33][34]. The coastline in the Kawaura district of Suzu moved 175 m (574 ft) seawards due to the…
https://en.wikipedia.org/wiki/2024_Noto_earthquake

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web search NEUTRAL — Subsequent observations—including shallow seismic events, gas emissions from the seafloor, and uplifted manholes—further suggest ongoing subsurface gas activity.
https://www.researchsquare.com/article/rs-7238725/v1

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web search NEUTRAL — The present study examines anomalous ground-motion amplification associated with an aftershock that occurred nearly simultaneously with the fire in Wajima.
https://link.springer.com/article/10.1007/s11069-026-08124-7

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Claim 3: “seismic instruments in Wajima recorded unexpectedly intense and highly localized shaking... high-frequency signals between 10 and 15 Hz”

CORROBORATED

The observation of high-frequency signals between 10 and 15 Hz during the shaking is reported in two different web results (the study summary and the Cassiopaea Forum citing the study).

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web search NEUTRAL — The study found that the shaking exhibited unusually high-frequency signals between 10 and 15 Hz, differing from the lower-frequency resonances typically associated with soft sediment layers during la…
https://phys.org/news/2026-06-seismic-champagne-effect-earth…

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web search NEUTRAL — The study found that the shaking exhibited unusually high-frequency signals between 10 and 15 Hz, differing from the lower-frequency resonances typically associated with soft sediment layers during la…
https://cassiopaea.org/forum/threads/watch-the-skies-and-lan…

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web search NEUTRAL — High-frequency tones at high volume can damage hearing quickly. Click Play — The tone plays instantly via the Web Audio API.
https://mic-tests.github.io/tone-generator

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Claim 4: “The fire in Wajima destroyed approximately 240 buildings and burned nearly 49,000 square meters.”

CORROBORATED

The specific figures of approximately 240 buildings and 49,000 square meters are reported by both the 'seismic champagne effect' study/EurekAlert and the 'Special Feature Chapter 1 Overview of the 2024 Noto Peninsula' document.

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wikipedia NEUTRAL — On 1 January 2024, at 16:10:09 JST (07:10:09 UTC), a MJMA7.6 (Mw7.5) earthquake struck 6 km (3.7 mi) north-northeast of Suzu, located on the Noto Peninsula of Ishikawa Prefecture, Japan. The reverse-f…
https://en.wikipedia.org/wiki/2024_Noto_earthquake

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wikipedia NEUTRAL — A light-year, alternatively spelled light year (ly or lyr), is a unit of length used to express astronomical distances and is equal to exactly 9460730472580.8 km, which is approximately 9.46 trillion …
https://en.wikipedia.org/wiki/Light-year

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wikipedia NEUTRAL — This is a list of cities in Japan sorted by prefecture and within prefecture by founding date. The list is also sortable by population, area, density and foundation date. Most large cities in Japan ar…
https://en.wikipedia.org/wiki/List_of_cities_in_Japan

+ 3 more evidence sources

info

Claim 5: “a major fire broke out in Kawai-machi, Wajima City, nearly an hour after the magnitude-7.6 earthquake struck on Jan. 1, 2024”

SINGLE SOURCE

The specific detail about the fire breaking out in Kawai-machi nearly an hour after the quake is mentioned in the EurekAlert/study summary, but not corroborated by other independent news reports provided.

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web search NEUTRAL — Jun 8, 2026 ... The study introduces what the author calls the “delayed seismic champagne effect.” The work examines why a major fire broke out in Kawai-machi, ...
https://e3.eurekalert.org/news-releases/1131412

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web search NEUTRAL — 2 days ago ... Firefighters were still battling the fires Tuesday afternoon. About 53 homes have collapsed in Suzu city, according to local authorities. Local ...
https://www.facebook.com/CBSNews/posts/a-powerful-earthquake…

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web search NEUTRAL — 2 days ago ... Photo / AP A fallen Shinto gateway in Suzu, a city in Ishikawa Prefecture, central Japan. Photo / AP Several homes were also damaged. Some ...
https://www.facebook.com/CBSSanFrancisco/posts/a-major-earth…

info

Claim 6: “the aftershock measured only magnitude 3.5”

SINGLE SOURCE

The magnitude of 3.5 for the 5:21 p.m. aftershock is specifically cited in the EurekAlert summary of the study.

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web search NEUTRAL — Jun 8, 2026 ... Although the aftershock measured only magnitude 3.5, seismic instruments in Wajima recorded unexpectedly intense and highly localized shaking.
https://e3.eurekalert.org/news-releases/1131412

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web search NEUTRAL — 2 days ago ... The 4:43 p.m. quake "occurred at a depth of around 30 kilometers off Miyazaki and registered lower 6 on the Japanese seismic intensity scale of ...
https://www.facebook.com/IloiloMetroTimes/posts/just-in-an-e…

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web search NEUTRAL — Jun 26, 2026 ... The quake occurred at 2:42 p.m., registering an upper 6 on the Japanese seismic intensity scale of 7 in Suzu, at the tip of the Noto Peninsula ...
https://www.facebook.com/thejapantimes/posts/breaking-a-magn…

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Claim 7: “a devastating urban fire that broke out in Wajima City after Japan's 2024 Noto Peninsula earthquake”

CORROBORATED

Multiple independent sources, including EurekAlert, a satellite data research poster, and Wikipedia, confirm a devastating urban fire occurred in Wajima City following the 2024 Noto Peninsula earthquake.

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wikipedia NEUTRAL — Noto Airport (能登空港, Noto Kūkō) (IATA: NTQ, ICAO: RJNW), marketed as Noto Satoyama Airport (のと里山空港, Noto Satoyama Kūkō) and also unofficially known as Wajima Airport (輪島空港, Wajima Kūkō) is a domestic a…
https://en.wikipedia.org/wiki/Noto_Airport

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wikipedia NEUTRAL — Wajima (輪島市, Wajima-shi) is a city located in Ishikawa Prefecture, Japan. As of 31 January 2018, the city had an estimated population of 27,698 in 12,768 households, and a population density of 65 per…
https://en.wikipedia.org/wiki/Wajima,_Ishikawa

+ 3 more evidence sources

help

Claim 8: “sealed manholes reportedly rose more than one meter above road surfaces”

INSUFFICIENT EVIDENCE

No evidence was found in the provided search results to confirm the specific height of manholes rising more than one meter above road surfaces.

info

Claim 9: “an unusual aftershock that occurred at 5:21 p.m., almost simultaneously with the reported outbreak of the fire”

SINGLE SOURCE

The specific timing of an aftershock at 5:21 p.m. coinciding with the fire is mentioned in the study-related web results, but not corroborated by general news or Wikipedia.

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wikipedia NEUTRAL — Hiroshi Wajima (Japanese: 輪島大士, Hepburn: Wajima Hiroshi; 11 January 1948 – 8 October 2018) was a Japanese sumo and professional wrestler. Born in Nanao, Ishikawa, he was the sport's 54th yokozuna and …
https://en.wikipedia.org/wiki/Hiroshi_Wajima

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wikipedia NEUTRAL — Wajima may refer to: Wajima, Ishikawa, a city in Japan Wajima-nuri, a type of Japanese lacquerware from the same area Wajima Station, a train station Wajima Hiroshi, Japanese sumo wrestler Wajima (ho…
https://en.wikipedia.org/wiki/Wajima

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+ 3 more evidence sources

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.