New in the @aunz.theconversation.com by @deeninis.bsky.social about the large Kamchatka earthquake.

My thoughts on the recent M8.8 earthquake sequence and tsunami, with my NZ colleague John Townend @vicuniwgtn.bsky.social @earthquakes.au @monashuniversity.bsky.social theconversation.com/kamchatka-ea...

This morning, a M4.6 (prelim.) earthquake near Singleton was felt across eastern NSW. Our latest analysis here at @earthquakes-au.bsky.social now has this as M4.9 with a depth of <4 km - comparable to the depths of earthquakes at the nearby Mt Arthur Coal Mine in 2024. www.abc.net.au/news/2025-04...

That’s a wrap for 2025 at the @seismosocam.bsky.social annual meeting. As always I am grateful for the opportunity to meet my online friends in person, and to showcase our observatory and the tools that we developed to monitor earthquakes. See you all next year in Pasadena!

How it started/ How it’s going Water ripples L - modern, active, beach sand; R - ancient, preserved, sandstone

In the last ~2 weeks the Asia Pacific region experienced several significant earthquakes. In addition, Japan released casualty and economic loss scenarios in the event of a local M8.0+ earthquake. I answer a few questions in this Explainer @earthquakes-au.bsky.social www.abc.net.au/news/2025-04...

A relict olivine crystal being insidiously replaced by serpentine in a forsterite-diopside marble. #thinsectionthursday #geology #science #minerals #rocks

The whole #MyanmarEarthquake rupture in one interferogram! This is three consecutive wide swath frames of ALOS-2 data, provided by JAXA through agreement with NASA. The line-of-sight (LOS) is ~perpendicular to fault strike, so most of what you see is vertical motion at bends and steps of the fault.

Aftershock foreshock for the M7.7 earthquake in Myanmar indicates a very high likelihood (97%) of earthquakes of magnitude 5+, 40% chance of M6+ and a very small possibility of another quake of M7+ (~6%) in the next week. earthquake.usgs.gov/earthquakes/...

A M7.7 followed ~11 mins later by a M6.4 aftershock - still a strong earthquake and likely damaging in itself - in Myanmar/ Burma about 40 mins ago. It took ~12 minutes for the associated waveforms to arrive at our recorders in the @earthquakes-au.bsky.social network in southeast Australia.

Large earthquake south of the South Island of New Zealand. www.geonet.org.nz/earthquake/2... 🧪 Mw 6.6 with oblique-reverse faulting.

We see you, Aotearoa. A M6.9 (prelim.) earthquake ~140 km offshore of the southernmost South Island, New Zealand, and widely felt across the South and North Islands, as detected on @earthquakes-au.bsky.social seismic network in southeast Australia.

Field work is delaying this week’s earthquake map, but while you’re waiting don’t forget to pick up your handy reference to the world’s largest earthquakes, conveniently listed on the back of this awesome Seismology t-shirt. Head to our website to buy yours now!

Here I am again. The Cheloungpu fault trench muesum, #Taiwan

They’ve arrived! Head over to www.src.com.au/product/seis... to get yours!

We’ll be giving away 100 t-shirts a day at the @seismosocam.bsky.social annual meeting next month in Baltimore, but if you’re not attending or just don’t want to miss out, you can purchase our new design MegaQuake T-shirt now through our website now - while stocks last!

What does an earthquake look like beneath your feet? This visualization shows seismic waves in action. We’re studying how such visuals improve public communication after major earthquakes. We'd love your input! Please take our short survey & share: ww3.unipark.de/uc/SIOseismi...

Geology is absolutely beautiful. Ripple marks, cross bedding and many more sedimentary features from a solo excursion in 2017. Photos from kata-juta national park #Australia #geology #outback #uluru

Ever wondered what fossils palaeontologists of the future, studying the ‘Anthropocene’, will likely find? 🤔 https://www.theguardian.com/science/2025/feb/22/technofossils-how-plastic-bags-and-chicken-bones-will-become-our-eternal-legacy

Moment magnitudes and corner frequencies calculated for 437 events from the Santorini crisis (Ml>3.5, Jan 24 - Feb 13) using SourceSpec. Big thanks to the EIDA node of the National Observatory of Athens for keeping their services online during this critical period. sourcespec.seismicsource.org

Not gonna lie - I’m jealous of this licence plate

A M7.6 earthquake struck SW of George Town, the capital of the Cayman Islands. This offshore quake occurred on a strike-slip fault. In this short news report, Temblor scientists consider which faults have been brought closer to failure. temblor.net/temblor/magn...

Evolution of the #SantoriniAmorgos seismic sequence (#σεισμος) as it is recorded in the #SNT1 station of the Seismological Laboratory of #NKUA in Santorini's old port. www.geophysics.geol.uoa.gr/stations/gma...

The seismic swarm northeast of Santorini, Greece, continues. Follow @eqgr.bsky.social for updates of recorded earthquakes as they happen.

Several thousand earthquakes have been recorded near the Greek island since late January. So why is this happening?

My long-time colleague and friend Konstantinos Michailos (ANU) and I on the Anydros-Santorini earthquake swarm @aunz.theconversation.com @earthquakes-au.bsky.social @monashscience.bsky.social https://theconversation.com/an-earthquake-swarm-is-shaking-santorini-it-could-persist-for-months-249278

@deeninis.bsky.social and Konstantinos Michailos with an excellent explainer about the current earthquake emergency in Santorini:

Geology x Stamps 😍 South West Africa Rock Formations, released in 1986.

Black sand (magnetite, ilmenite) at Bells Beach, near Torquay, Victoria 🖤

A magnitude 4.6 earthquake occurred at 1:22pm local time, located east of Hawker in South Australia

“A disaster so big it sped up our planet’s rotation and left almost a quarter of a million people dead..” The 2004 M9.1 ‘Boxing Day’ Sumatra Andaman earthquake and tsunami https://www.abc.net.au/news/2024-12-21/2004-boxing-day-tsunami-twenty-years-on/104576856

for #FossilFriday here is a small #Trepassia from the #Ediacaran of Newfoundland. This is a very rare small specimen, most are 2m or so in length. Trepassia belongs in the #Rangeomorpha an extinct clade of fractal-like early complex macroorganisms

When 4 becomes 3: textbook example of “soft first storey collapse” as the US embassy in Vanuatu loses its ground floor in yesterday’s M 7.3 earthquake. Luckily it appears staff were out for lunch (acc. to the Guardian). This is my worst fear whenever I enter an older multi-storey here in Cascadia

A seismologist from @monashuniversity.bsky.social explains that more earthquakes could hit Vanuatu as rescue workers dig through rubble. The magnitude 7.2 quake that struck near Port Vila was just 50km below ground. This shallow depth made it especially damaging.

Since Vanuatu’s first earthquake was at a magnitude over 7, we would expect to see more aftershocks to come, at declining strengths and frequency – in a pattern that can last weeks to months.

Why Vanuatu should brace for even more aftershocks after this week’s deadly quakes: a seismologist explains https://theconversation.com/why-vanuatu-should-brace-for-even-more-aftershocks-after-this-weeks-deadly-quakes-a-seismologist-explains-246231

The Vanuatu M7.3-M7.5 earthquake is located directly under an island and caused significant damage. The mechanism shows a near vertical or horizontal fault plane. Calculated depths vary between 25-50 km. Given location & magnitude, it may have been generated by faulting within the subducting slab.🧪⚒️

ABC News is reporting possible earthquake-induced landslide fatalities in #Vanuatu, as reported by a local person: "A landslide on one road had covered a bus, he said, "so there's obviously some deaths there" www.abc.net.au/news/2024-12...

M 7.3 earthquake near Vanuatu rolling into New Zealand on the GeoNet network. 🧪

#EarthquakeReport for M7.3 #Earthquake offshore of #Vanuatu Oblique reverse (?) earthquake mechanism (mostly Compressional) Within subducting Australia plate Maybe small local tsunami (?) Tectonic background in '23 report earthjay.com?p=10727 earthquake.usgs.gov/earthquakes/...

A M7.5 (prelim.) - with a current depth estimate of ~50 km - near Vanuatu not long ago, as detected by all the sites in our seismic network in southeast Australia.

You just can’t trust double crossing metamorphics (Mount Isa region, Queensland, Australia).

Good morning, here are some soft sediment deformation structures for you. They are in the Lake Lisan Fm. near the Dead Sea and were formed in earthquakes. Location: maps.app.goo.gl/TBrCEyK78uNg... Further reading: www.sciencedirect.com/science/arti...

🧪⚒️ I modeled earthquakes on the San Andreas and San Jacinto faults – constrained by historic and geologic records – to show they can collaborate on a big quake (and probably did in 1812). This has implications for hazard and for how faults share the CA plate boundary. www.science.org/doi/10.1126/...

Not far from Tokyo, we have a convenient island for a round-day geological trip - Jogashima. We can see the uplifted deposits of a not-so-ancient submarine volcano. #FaultFriday

Okay, let's try to get the #FoldFriday back on here. Here's the beautiful view at Skarsvåg, Norway, where I was back in 2018. Dog for scale. #RIP ⚒️ #Geology 🧪

#Fridayfold Kīlauea flows on the east rift zone. Taken in 2017, and I am pretty sure this site is buried now.

👋 Hi! I'm a geospatial product owner leading a cloud-native data engineering team in Wellington, New Zealand. We help process nationally standardised & open datasets - like aerial imagery and elevation data. 🌏 Looking forward to seeing a bunch of awesome people in Aotearoa for FOSS4G 2025!