Dr. Dee Ninis
@deeninis.bsky.social
Earthquake Scientist: geology, seismology
Seismic hazard - Seismology Research Centre
Affiliate - Monash Uni Earth Atmosphere Environment
Vice Pres. - Aus. Earthquake Engineering Society
Committee - Geological Society Aus. (Vic.)
Seismic hazard - Seismology Research Centre
Affiliate - Monash Uni Earth Atmosphere Environment
Vice Pres. - Aus. Earthquake Engineering Society
Committee - Geological Society Aus. (Vic.)
Reposted by Dr. Dee Ninis
New in the @aunz.theconversation.com by @deeninis.bsky.social about the large Kamchatka earthquake.
Kamchatka earthquake is among top 10 strongest ever recorded. Here’s what they have in common
The earthquake in Kamchatka is the largest worldwide since 2011. Its location has been very seismically active in recent months.
theconversation.com
July 30, 2025 at 9:06 AM
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...
Kamchatka earthquake is among top 10 strongest ever recorded. Here’s what they have in common
The earthquake in Kamchatka is the largest worldwide since 2011. Its location has been very seismically active in recent months.
theconversation.com
July 31, 2025 at 12:18 AM
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...
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...
Early morning NSW Hunter earthquake felt nearly 500km away in Canberra
A magnitude-4.6 earthquake shakes parts of the Hunter region with impacts felt as far away as Tamworth and Canberra.
www.abc.net.au
April 23, 2025 at 1:05 AM
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...
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...
Reposted by Dr. Dee Ninis
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!
April 18, 2025 at 8:11 PM
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
Water ripples
L - modern, active, beach sand;
R - ancient, preserved, sandstone
April 13, 2025 at 12:49 AM
How it started/ How it’s going
Water ripples
L - modern, active, beach sand;
R - ancient, preserved, sandstone
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...
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 spate of earthquakes just rattled the Asia Pacific. Should we worry?
The deadly Myanmar earthquake last week was the biggest among a number of smaller quakes that rocked the region.
www.abc.net.au
April 9, 2025 at 10:27 PM
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...
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...
Reposted by Dr. Dee Ninis
A relict olivine crystal being insidiously replaced by serpentine in a forsterite-diopside marble.
#thinsectionthursday #geology #science #minerals #rocks
#thinsectionthursday #geology #science #minerals #rocks
April 3, 2025 at 6:02 AM
A relict olivine crystal being insidiously replaced by serpentine in a forsterite-diopside marble.
#thinsectionthursday #geology #science #minerals #rocks
#thinsectionthursday #geology #science #minerals #rocks
Reposted by Dr. Dee Ninis
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.
April 2, 2025 at 11:14 PM
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.
Reposted by Dr. Dee Ninis
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/...
earthquake.usgs.gov/earthquakes/...
March 28, 2025 at 11:06 PM
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/...
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.
March 28, 2025 at 7:06 AM
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.
Reposted by Dr. Dee Ninis
Large earthquake south of the South Island of New Zealand. www.geonet.org.nz/earthquake/2... 🧪 Mw 6.6 with oblique-reverse faulting.
March 25, 2025 at 2:27 AM
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.
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.
March 25, 2025 at 2:03 AM
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.
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.
Reposted by Dr. Dee Ninis
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!
March 11, 2025 at 5:50 AM
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!
Reposted by Dr. Dee Ninis
They’ve arrived! Head over to www.src.com.au/product/seis... to get yours!
March 7, 2025 at 12:05 AM
They’ve arrived! Head over to www.src.com.au/product/seis... to get yours!
Reposted by Dr. Dee Ninis
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!
March 6, 2025 at 10:30 PM
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!
Reposted by Dr. Dee Ninis
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...
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...
February 25, 2025 at 10:48 PM
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...
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...
Reposted by Dr. Dee Ninis
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
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
February 22, 2025 at 9:42 PM
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
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
February 22, 2025 at 12:21 PM
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
Reposted by Dr. Dee Ninis
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
sourcespec.seismicsource.org
February 14, 2025 at 5:44 PM
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
sourcespec.seismicsource.org
Reposted by Dr. Dee Ninis
A heart-warming image for a dull day 😏 Built into the wall surrounding Rodel churchyard in south Harris, goodness knows how old this work of art is (the church is 12th century, at least).
February 14, 2025 at 8:55 AM
Not gonna lie - I’m jealous of this licence plate
February 12, 2025 at 6:52 AM
Not gonna lie - I’m jealous of this licence plate
Reposted by Dr. Dee Ninis
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...
temblor.net/temblor/magn...
Magnitude 7.6 earthquake strikes offshore fault near the Cayman Islands - Temblor.net
A relatively shallow, left-lateral strike-slip event struck on a fault zone that bounds the Caribbean plate.
temblor.net
February 10, 2025 at 12:43 AM
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...
temblor.net/temblor/magn...
Reposted by Dr. Dee Ninis
Reposted by Dr. Dee Ninis
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...
www.geophysics.geol.uoa.gr/stations/gma...
February 3, 2025 at 1:52 PM
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...
www.geophysics.geol.uoa.gr/stations/gma...