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James Dalziel @j-dalziel.bsky.social · 8d

This brilliant initiative & resulting White Paper gives important insights into the geohazards affecting Indonesia, challenges & research priorities for better understanding of hazard, & recommended solutions to address challenges, strengthen resilience & improve disaster risk reduction.

British Geological Survey @bgs.ac.uk · 8d

Natural hazard disasters in Indonesia are responsible for the loss of hundreds to thousands of lives each year and costs the national economy US$1 to US$3 billion.

Effective disaster risk reduction across the spectrum of geohazards depends on decisions grounded in the best available earth science.

Damage in Palu, Indonesia following the devastating 2018 magnitude 7.5 earthquake. Houses and buildings are all floored, and debris is scattered across the ground. In the background are trees and mountains.

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Reposted by James Dalziel

Isobel Yeo @isobelyeo.bsky.social · 8d

Great to see @mikeaclare.bsky.social @noc.ac.uk quoted in this piece in the Guardian today www.theguardian.com/news/2025/se... about the Hunga Volcano eruption and the subsequent telecommunications outage in 2022.

Extremely offline: what happened when a Pacific island was cut off from the internet | Samanth Subramanian

A colossal volcanic eruption in January 2022 ripped apart the underwater cables that connect Tonga to the world – and exposed the fragility of 21st-century life

www.theguardian.com

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Reposted by James Dalziel

Kristen Cook @kristencook.bsky.social · 15d

The Matai’an landslide dam in eastern Taiwan has failed this afternoon (eos.org/thelandslide...), flooding Guangfu, about 15 km downstream focustaiwan.tw/society/2025.... Even in the middle of a typhoon, the resulting flood produced a detectable seismic signal at stations ~40 km away.

Seismic waveforms and power spectral density plots showing the signal of a landslide lake outburst flood.

Planet satellite image from August 2025 of a large landslide blocking a river and creating a lake.

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James Dalziel @j-dalziel.bsky.social · 14d

This article, based on a recent Seismological Research Letters paper from scientists at the Statewide California Earthquake Center (SCEC), examines occurrence of supershear earthquakes, the need for updated hazard planning & suitable building design to reflect risks: dornsife.usc.edu/news/stories...

'Supershear' earthquakes a major threat to California, say scientists

USC Dornsife researchers say powerful, fast-moving quakes will strike the Golden State, urge stronger building codes and better monitoring

dornsife.usc.edu

Reposted by James Dalziel

Scott St. George @scottstgeorge.paleohydrology.com · 23d

Yet another Nat Cat job? Actually, we're searching for TWO experts, specialized in tropical cyclones or earthquakes. US or UK, remote work definitely an option. Great job for an ECR physical scientist looking to join the insurance/reinsurance industry! eedu.fa.em3.oraclecloud.com/hcmUI/Candid...

Natural Catastrophe Analyst - Earthquake/Hurricane Specialist

An exciting opportunity to join an established research network team at Willis (a WTW business), helping clients understand and manage risk while shaping the Willis “view of risk.” Using your scientif...

eedu.fa.em3.oraclecloud.com

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Reposted by James Dalziel

Mike Cassidy @mikevolc.bsky.social · 22d

🌋 Excited to share my new essay in Aeon: one of the most underappreciated global risks isn’t an asteroid or supervolcano—it’s the eruptions we don’t see coming:

Aeon Magazine @aeon.co · 23d

The science of volcanoes and their relationship with the climate is hard to keep up with. Why do some volcanoes give us little warning before they blow? Are we ignoring the next big eruption?

Hidden volcanoes: are we ignoring the next big eruption? | Aeon Essays

The next global disaster may be triggered by a catastrophic eruption. How can we prepare for the fire beneath our feet?

buff.ly

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Reposted by James Dalziel

UCL Warning Research Centre @uclwrc.bsky.social · Aug 27

Volcano alert: Scientists discover a signal that could transform early warning systems - the role of shear-wave splitting: www.earth.com/news/volcano...

Volcano alert: Scientists discover a signal that could transform early warning systems

Detecting a signal within earthquake waves called shear-wave splitting may improve early warning systems for volcano eruptions.

www.earth.com

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James Dalziel @j-dalziel.bsky.social · Aug 15

Hopefully this work will be complimented by my own work with scientists from the University of Birmingham and Centre for the Study of Existential Risk (currently in review), examining volcanic hazards and financial exposure from an insurance perspective.

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James Dalziel @j-dalziel.bsky.social · Aug 15

This paper by Meredith et al. (2025) examines global city exposure to volcanic hazards, using metrics such as population and distance to GVP Holocene volcanoes to quantify and rank cities at risk. This data has also been visualised through a web app. nhess.copernicus.org/articles/25/...

Cities near volcanoes: which cities are most exposed to volcanic hazards?

Abstract. Cities near volcanoes expose dense concentrations of people, buildings, and infrastructure to volcanic hazards. Identifying cities globally that are exposed to volcanic hazards helps guide l...

nhess.copernicus.org

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Reposted by James Dalziel

Jascha Polet @jascha.bsky.social · Jul 31

Just to illustrate how long waves from a #tsunami can keep going, this is a tide gauge record from Crescent City CA (known for its sensitivity to tsunami waves due to bathymetric and resonance effects) showing significant wave activity still continues 24+ hours after their first arrival. 🧪⚒️

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Reposted by James Dalziel

British Geological Survey @bgs.ac.uk · Jul 31

Kamchatka earthquake highlights the advances in tsunami early warning systems 🌊 🛰️

BGS Prof David Tappin, Marine Geologist & tsunami expert explains how the Kamchatka event highlighted the improved mitigation measures now in place.

www.bgs.ac.uk/news/kamchat...

A National Oceanic & Atmospheric Administration (NOAA) diagram illustrating how tsunami wave information in the deep ocean is transmitted to tsunami warning centers (right)

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James Dalziel @j-dalziel.bsky.social · Jul 3

This article, based on Yanites et al. (2025) in Science, discusses how hazardous events such as earthquakes, wildfires, & storms accelerate erosion & sediment transport, increasing sensitivity & risk of cascading hazards such as landslides & floods:
theconversation.com/hurricane-he...

Hurricane Helene set up future disasters, from landslides to flooding – cascading hazards like these are now upending risk models

Risk models can’t rely just on the past anymore. A team of geoscientists suggests new ways to forecast evolving hazards in real time as cascading disaster risk worsens.

theconversation.com

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Reposted by James Dalziel

John Cassidy @earthquakeguy.bsky.social · Jun 22

Earthquakes in eastern #Canada? June 23, 2010 - a damaging M5 #earthquake in western Québec was felt in Ontario, #Québec and as far away as Washington DC. It triggered landslides and produced the strongest shaking ever felt in #Ottawa (~60 km away): earthquakescanada.nrcan.gc.ca/pprs-pprp/pu...
⚒️🧪

Maps showing how the June 23, 2010 M5 earthquake near Val des Bois, Quebec, was felt across eastern North America (to a distance of nearly 1000 km). Map on the right is a closeup of felt shaking reports from the epicentral region where some damage occurred and landslides were triggered.

Photo of a red barn that was impacted by a landslide following a M5 earthquake in Quebec. Brown soils outline the landslide, with green grassy fields and trees in the background.

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James Dalziel @j-dalziel.bsky.social · Jun 19

With an eruption at Mt. Etna earlier this month also sending ash 6.4km high, leading to warnings for aviation, volcanoes remain a constant but often overlooked risk for tourism, supply chains & the maritime sector, as well as local infrastructure.

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James Dalziel @j-dalziel.bsky.social · Jun 19

On 17-18th June, explosive eruptions at Mt. Lewotobi Laki-Laki on the Indonesian island of Flores sent ash >11.5km above sea level. This highlights volcanic hazards on varying scales; pyroclastic flows & lahars threatening local communities, & ash leading to flight cancellations & delays.

Bali flights cancelled after Indonesian volcano spews 10km-high ash tower

Mount Lewotobi Laki-Laki on the island of Flores, east of Bali, erupted on Tuesday afternoon, leading to several airlines cancelling flights

www.theguardian.com

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Reposted by James Dalziel

Dr. Erik Klemetti Gonzalez @erikklemetti.bsky.social · Jun 2

The VAAC report for the Etna eruption today mentions a plume reaching 6,500 m / ~21,000 feet.

Jascha Polet @jascha.bsky.social · Jun 2

A live feed of the current eruption of Etna can be found here: www.youtube.com/live/pO2zFFe... 🌋⚒️

Screen shot of live feed of Etna eruption at https://www.youtube.com/live/pO2zFFeqiMo?si=hmhqG8eLWt-spWhO

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Reposted by James Dalziel

Jascha Polet @jascha.bsky.social · Jun 2

Pyroclastic flows at Etna have been confirmed by INGV ⚒️🌋

Vond @vond.it · Jun 2

❗ Violenta eruzione del Monte Etna, una potente esplosione è stata udita distintamente dalla popolazione nelle zone circostanti.

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Reposted by James Dalziel

Mojtaba Rajabi @geostress.bsky.social · May 21

Pleased to announce the 4th major release of the @wsmproject.bsky.social, the biggest update of the database since the project began.

With thousands of new data, the 2025 WSM brings the most comprehensive picture yet of Earth's present-day stress field.

#Geomechanics

W: www.world-stress-map.org

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Reposted by James Dalziel

Dave Petley @davepetley.bsky.social · May 22

On 21 May 2025, a house was destroyed by a dramatic quick clay landslide at Sainte Monique in Quebec, Canada. Fortunately, no-one was killed:-
eos.org/thelandslide...
There is also excellent drone footage of the aftermath on Youtube, posted by Radio-Canada Info:-
www.youtube.com/watch?v=G4JB...

Google Earth image of the site of the 21 May 2025 quick clay landslide at Sainte Monique in Canada.

A drone image of the site of the 21 May 2025 quick clay landslide at Sainte Monique in Canada. Still from a drobe video posted to Youtube by Radio-Canada Info.

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Reposted by James Dalziel

Copernicus ECMWF @copernicusecmwf.bsky.social · May 16

In 2024, Europe saw average to slightly above-average fire danger for most of the year, with the highest values in September. Around 110,000 hectares burnt in Portugal that month, accounting for around a quarter of the overall total burnt area in Europe for the year. bit.ly/4ctJySA #ESOTC2024 #C3S

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Reposted by James Dalziel

Henning @geohenning.bsky.social · May 15

This is a photo of the surface rupture we saw in the webcam footage of the Myanmar #earthquake. The webcam was positioned on the opposite side behind the gate. Source is the YouTube channel that also posted the footage. 🧪⚒️

youtube.com/@sagaingeart...

Photo of a road, the asphalt is torn apart and cracked from the bottom of the image into the distance. This is a result of an earthquake surface rupture. The road leads to a gate with white walls and some grass in front of it. Overcast sky.

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James Dalziel @j-dalziel.bsky.social · May 14

Incredible footage of sudden ground displacement from the recent Myanmar earthquake. It took me a few watches to understand & believe what I was seeing!

Fumihiko Ikegami @fikgm.bsky.social · May 12

I am speechless...
>> First fault movement ever filmed. M7.9 surface rupture filmed near Thazi, Myanmar
m.youtube.com/watch?v=77ub...

First fault movement ever filmed. M7.9 surface rupture filmed near Thazi, Myanmar

YouTube video by 2025 Sagaing Earthquake Archive

m.youtube.com

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Reposted by James Dalziel

UK COMET @uk-comet.bsky.social · Apr 28

We hope everyone attending European Geosciences Union (EGU) 2025 has a fantastic week and don't miss the following COMET talks and posters.

You can check out the full hashtag#EGU25 programme on the EGU website www.egu25.eu

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Reposted by James Dalziel

British Geological Survey @bgs.ac.uk · Apr 23

SEISMIC INFORMATION : SEA OF MARMARA (WESTERN TURKEY) 23 APRIL 2025 09:49

The following preliminary information is available for this earthquake:

LAT/LONG : 40.840° North / 28.142° East
DEPTH : 10 km
MAGNITUDE : 6.2 Mw
LOCALITY : Sea of Marmara, 75 km west of Istanbul, Turkey

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Reposted by James Dalziel

Stormrider @kwh.bsky.social · Apr 15

USGS provides interactive ground motion maps for 14 earthquake scenarios on the Elsinore fault, ranging from M 6.8 to M 7.7 (many combinations of different fault sections) so you can see what shaking it is capable of producing in the future earthquake.usgs.gov/scenarios/ca...

BSSC2014 (Scenario Catalog)

USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards

earthquake.usgs.gov

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