Jack Williams
@faulty-jack.bsky.social
Postdoc at the University of Otago investigating seismic hazard in southern Aotearoa 🇳🇿. Previously worked on faults in 🇲🇼. Running and climbing are my escape
Excited to share our paper on testing seismicity rate models (SRMs) in the low strain rate Otago region of New Zealand. We suggest that SRMs in these regions should either consider fault-based SRMs, or distributed seismicity models that account for overdispersed earthquake occurrence ⚒️🇳🇿
In regions with low strain rate, limited seismic data makes forecasting hazardous earthquakes challenging. A #BSSA paper explores how three models fare in just such a region — Otago, New Zealand. ⚒️
pubs.geoscienceworld.org/ssa/bssa/art...
pubs.geoscienceworld.org/ssa/bssa/art...
September 2, 2025 at 7:27 PM
Excited to share our paper on testing seismicity rate models (SRMs) in the low strain rate Otago region of New Zealand. We suggest that SRMs in these regions should either consider fault-based SRMs, or distributed seismicity models that account for overdispersed earthquake occurrence ⚒️🇳🇿
Great to see our paper exploring the mechanisms for deep earthquakes in the southern East Africa Rift System published #OpenAccess in @wearetektonika.bsky.social 😀 Probably the last in a long line of papers that have explored this region's tectonics and seismic hazard through the PREPARE project!
🆕 🔔 Already 4 papers in our Issue 3/2 !
1/4: "The drivers of Lower Crustal Earthquakes Along Magma-poor Portions of the East African Rift" by Luke Wedmore, @faulty-jack.bsky.social et al. ⚒️
tektonika.online/index.php/ho...
1/4: "The drivers of Lower Crustal Earthquakes Along Magma-poor Portions of the East African Rift" by Luke Wedmore, @faulty-jack.bsky.social et al. ⚒️
tektonika.online/index.php/ho...
August 29, 2025 at 6:17 PM
Great to see our paper exploring the mechanisms for deep earthquakes in the southern East Africa Rift System published #OpenAccess in @wearetektonika.bsky.social 😀 Probably the last in a long line of papers that have explored this region's tectonics and seismic hazard through the PREPARE project!
Reposted by Jack Williams
The Nelson-Tasman region of New Zealand is a rugged region in the NW corner of the South Island. The region has low levels of crustal seismic activity; however, it is home to two of the most significant NZ crustal earthquakes of the last century (more on these below). 1/ 🧪
August 25, 2025 at 12:07 AM
The Nelson-Tasman region of New Zealand is a rugged region in the NW corner of the South Island. The region has low levels of crustal seismic activity; however, it is home to two of the most significant NZ crustal earthquakes of the last century (more on these below). 1/ 🧪
Great to see our study evaluating earthquake-simulators in New Zealand highlighted by @seismosocam.bsky.social. Led by Govinda Niroula, it's the first in a sequence of exciting papers from his PhD on the opportunities and challenges for implementing earthquake simulators in seismic hazard models 😀
Testing and Evaluation of the First‐Generation Earthquake Rupture Simulations for New Zealand #BSSA ⚒️
By using earthquake simulator RSQSim to generate a synthetic earthquake catalog for New Zealand, scientists can assess how well the simulator simulates.
pubs.geoscienceworld.org/ssa/bssa/art...
By using earthquake simulator RSQSim to generate a synthetic earthquake catalog for New Zealand, scientists can assess how well the simulator simulates.
pubs.geoscienceworld.org/ssa/bssa/art...
August 22, 2025 at 7:38 AM
Great to see our study evaluating earthquake-simulators in New Zealand highlighted by @seismosocam.bsky.social. Led by Govinda Niroula, it's the first in a sequence of exciting papers from his PhD on the opportunities and challenges for implementing earthquake simulators in seismic hazard models 😀
Check out our new #OpenAccess paper on late Quaternary activity of the Settlement Fault, New Zealand 👇 Here, we describe evidence that it has hosted temporally clustered that are casually linked to similarly timed earthquake clustering on the nearby Akatore Fault 🧐
doi.org/10.1080/0028...
doi.org/10.1080/0028...
Insights into temporal earthquake clustering from the Settlement Fault, southeastern Otago, Aotearoa New Zealand
We combine previous studies, fieldwork, lidar data, and trenching to examine late Quaternary activity of the SE-dipping ≥23 km long Settlement Fault in the southeastern South Island. Trenching of a...
doi.org
March 4, 2025 at 8:24 PM
Check out our new #OpenAccess paper on late Quaternary activity of the Settlement Fault, New Zealand 👇 Here, we describe evidence that it has hosted temporally clustered that are casually linked to similarly timed earthquake clustering on the nearby Akatore Fault 🧐
doi.org/10.1080/0028...
doi.org/10.1080/0028...
Reposted by Jack Williams
🆕 #Tektonika Volume 2 Issue 2 is now complete and online !
A great editorial by @fabiocrameri.ch and @drlperezdiaz.bsky.social "The Evolving Role of Science Visuals in Geoscience: From Simple Illustrations to Storytelling Tools", and 9 papers on various subjects. ⚒️
tektonika.online/index.php/ho...
A great editorial by @fabiocrameri.ch and @drlperezdiaz.bsky.social "The Evolving Role of Science Visuals in Geoscience: From Simple Illustrations to Storytelling Tools", and 9 papers on various subjects. ⚒️
tektonika.online/index.php/ho...
January 13, 2025 at 2:36 PM
🆕 #Tektonika Volume 2 Issue 2 is now complete and online !
A great editorial by @fabiocrameri.ch and @drlperezdiaz.bsky.social "The Evolving Role of Science Visuals in Geoscience: From Simple Illustrations to Storytelling Tools", and 9 papers on various subjects. ⚒️
tektonika.online/index.php/ho...
A great editorial by @fabiocrameri.ch and @drlperezdiaz.bsky.social "The Evolving Role of Science Visuals in Geoscience: From Simple Illustrations to Storytelling Tools", and 9 papers on various subjects. ⚒️
tektonika.online/index.php/ho...
Great to see our research on lower crustal seismicity in southern New Zealand highlighted @rnz.co.nz.web.brid.gy! I do love working at the intersection between seismic hazard modelling and crustal rheology 🤓😍
www.rnz.co.nz/news/nationa...
www.rnz.co.nz/news/nationa...
Southland's hidden reservoir of quake-prone crust revealed
A team of scientists has found "an extra-deep layer of the Earth where earthquakes can occur" beneath the region.
www.rnz.co.nz
November 21, 2024 at 7:06 AM
Great to see our research on lower crustal seismicity in southern New Zealand highlighted @rnz.co.nz.web.brid.gy! I do love working at the intersection between seismic hazard modelling and crustal rheology 🤓😍
www.rnz.co.nz/news/nationa...
www.rnz.co.nz/news/nationa...
Excited to see the results from our Nevis-Cardrona Fault trenches published in @weareseismica.bsky.social. Was probably one of the most stunning locations I've ever conducted fieldwork in! @aotearoa-unzpd.bsky.social
Using constraints from 3 paleoseismic trenches along the Nevis-Cardrona Fault in Aotearoa New Zealand, Williams et al. document a case where reverse fault earthquakes may have terminated at fault bends: doi.org/10.26443/sei...
youtu.be/aWE0cUOYjJo
youtu.be/aWE0cUOYjJo
Williams et al. 2024 - Seismica Volume 3 Issue No 2
YouTube video by WeAreSeismica
youtu.be
November 12, 2024 at 7:17 PM
Excited to see the results from our Nevis-Cardrona Fault trenches published in @weareseismica.bsky.social. Was probably one of the most stunning locations I've ever conducted fieldwork in! @aotearoa-unzpd.bsky.social
Reposted by Jack Williams
Bluesky is dominated by N hemisphere folks so I put together a small starter pack for those interested in geoscience-related topics in Aotearoa New Zealand. A small group for now but hoping it will grow a bit more in the near future!
November 12, 2024 at 6:16 PM
Bluesky is dominated by N hemisphere folks so I put together a small starter pack for those interested in geoscience-related topics in Aotearoa New Zealand. A small group for now but hoping it will grow a bit more in the near future!
Reposted by Jack Williams
It's hardly just an 'operational' matter as the minister claims, when the cost cutting is driven by govt cuts to research funding, and a push for science to be commercial instead of recognising that core science like this is critical and valuable in and of itself.
www.nzherald.co.nz/nz/gns-cuts-...
www.nzherald.co.nz/nz/gns-cuts-...
Cost cutting could ‘devastate’ research on NZ’s biggest tsunami threat - 85 experts
Dozens of the world's top geoscientists have urged GNS to rethink axing 46 research jobs.
www.nzherald.co.nz
September 12, 2024 at 10:31 PM
It's hardly just an 'operational' matter as the minister claims, when the cost cutting is driven by govt cuts to research funding, and a push for science to be commercial instead of recognising that core science like this is critical and valuable in and of itself.
www.nzherald.co.nz/nz/gns-cuts-...
www.nzherald.co.nz/nz/gns-cuts-...
Excited to share this new EPSL article by Cameron Grant, Fola Kolawole, and a small bit by me. Using the Okavango-Makgadikgadi rifts, we show continental rifts initiate with an exponential fault length distribution before evolving to a power law distribution www.sciencedirect.com/science/arti...
Evolution of rift faulting in incipient, magma-poor divergent plate boundaries: New insights from the Okavango-Makgadikgadi Rift Zone, Botswana
Continental rifts are thought to transition from a power-law fault length distribution during the juvenile stages of extension, to an exponential dist…
www.sciencedirect.com
September 3, 2024 at 12:55 AM
Excited to share this new EPSL article by Cameron Grant, Fola Kolawole, and a small bit by me. Using the Okavango-Makgadikgadi rifts, we show continental rifts initiate with an exponential fault length distribution before evolving to a power law distribution www.sciencedirect.com/science/arti...
Great news!! odt.co.nz/business/900... So can someone explain to me how decimating the NZ geoscience community is going to save money?? www.rnz.co.nz/news/nationa...
$900m from Tarras gold mine
Resources Minister Shane Jones says nearly $900 million in government revenue could be just the tip of the iceberg for Santana Minerals’...
odt.co.nz
August 1, 2024 at 9:05 PM
Great news!! odt.co.nz/business/900... So can someone explain to me how decimating the NZ geoscience community is going to save money?? www.rnz.co.nz/news/nationa...
Reposted by Jack Williams
I'm back world! Reporting on cool active tectonics and other stuff from Aotearoa New Zealand
July 29, 2024 at 10:30 PM
I'm back world! Reporting on cool active tectonics and other stuff from Aotearoa New Zealand
Check out this awesome video by Rhys Latton for the 50th anniversary of the 'Dunedin Earthquake' vimeo.com/921866739/c4...
A great reminder of the need to prepare for future earthquakes.... even in "low seismicity" regions
A great reminder of the need to prepare for future earthquakes.... even in "low seismicity" regions
Are You Ready to Shake, Dunedin?
On the 9th of April 1974, Dunedin, New Zealand experienced a moderate earthquake. For this self-proclaimed "low-risk" city, nobody was prepared for this…
vimeo.com
April 24, 2024 at 1:49 AM
Check out this awesome video by Rhys Latton for the 50th anniversary of the 'Dunedin Earthquake' vimeo.com/921866739/c4...
A great reminder of the need to prepare for future earthquakes.... even in "low seismicity" regions
A great reminder of the need to prepare for future earthquakes.... even in "low seismicity" regions
Reposted by Jack Williams
Very happy to have edited this paper 👇 that review the seismically active faults in the Sacramento area, E of San Francisco, N California.
Now published in TEKTONIKA Diamond Open Access Journal (DOAJ): tektonika.online/index.php/ho...
TEKTONIKA is free to publish, free to read ⚒️ 🧪
Now published in TEKTONIKA Diamond Open Access Journal (DOAJ): tektonika.online/index.php/ho...
TEKTONIKA is free to publish, free to read ⚒️ 🧪
🆕 🔔 New paper published in TEKTONIKA DOAJ:
"Quaternary-Active Faults and the Role of Inherited Structures in the Sacramento-San Joaquin Delta, Western Central Valley, Northern California"
by C. Trexler, J. Willard and B. Philibosian from USGS.
⚒️ 🧪
"Quaternary-Active Faults and the Role of Inherited Structures in the Sacramento-San Joaquin Delta, Western Central Valley, Northern California"
by C. Trexler, J. Willard and B. Philibosian from USGS.
⚒️ 🧪
March 6, 2024 at 3:12 PM
Very happy to have edited this paper 👇 that review the seismically active faults in the Sacramento area, E of San Francisco, N California.
Now published in TEKTONIKA Diamond Open Access Journal (DOAJ): tektonika.online/index.php/ho...
TEKTONIKA is free to publish, free to read ⚒️ 🧪
Now published in TEKTONIKA Diamond Open Access Journal (DOAJ): tektonika.online/index.php/ho...
TEKTONIKA is free to publish, free to read ⚒️ 🧪
Reposted by Jack Williams
Reminder 👇 ! Submit your manuscripts to DOA journals ! And if your topics are tectonics submit to TEKTONIKA !
tektonika.online
tektonika.online
2024, time to make a good resolution: Finish writing and SUBMIT your manuscript to TEKTONIKA DOAJ !
Free to publish, free to read. tektonika.online ⚒️
(Well, 👇 it seems that the AI I've been using is having a bit of trouble writing correctly T E K T O N I K A 🤭, but their notebook is fine)
Free to publish, free to read. tektonika.online ⚒️
(Well, 👇 it seems that the AI I've been using is having a bit of trouble writing correctly T E K T O N I K A 🤭, but their notebook is fine)
February 21, 2024 at 1:33 PM
Reminder 👇 ! Submit your manuscripts to DOA journals ! And if your topics are tectonics submit to TEKTONIKA !
tektonika.online
tektonika.online
I had an excellent time last week with 3rd year Otago University Geology students in the Catlins in southern NZ 😎. They all did a great job learning how to plot structural data on stereonets 👍
February 19, 2024 at 7:42 PM
I had an excellent time last week with 3rd year Otago University Geology students in the Catlins in southern NZ 😎. They all did a great job learning how to plot structural data on stereonets 👍
Great to see some amazing new #lidar released over Southland, New Zealand 😍😍😍 The Tin Hut fault scarp in the Takitimu Mountains looks stunning (here compared to an aerial photo from Lloyd Homer, GNS Science)
February 2, 2024 at 12:06 AM
Great to see some amazing new #lidar released over Southland, New Zealand 😍😍😍 The Tin Hut fault scarp in the Takitimu Mountains looks stunning (here compared to an aerial photo from Lloyd Homer, GNS Science)
Great to see our new seismic risk model for Malawi published. By integrating many datasets collected with the
PREPARE project, this model can help decision makers with mitigating risk in this seismically vulnerable region #resilienceforall doi.org/10.3389/fbui...
PREPARE project, this model can help decision makers with mitigating risk in this seismically vulnerable region #resilienceforall doi.org/10.3389/fbui...
Probabilistic seismic collapse risk assessment of non-engineered masonry buildings in Malawi
This study presents the most recent development of a nationwide earthquake risk model for nonengineered masonry buildings in Malawi. Due to its location within the East African Rift, Malawi experience...
doi.org
January 23, 2024 at 8:55 PM
Great to see our new seismic risk model for Malawi published. By integrating many datasets collected with the
PREPARE project, this model can help decision makers with mitigating risk in this seismically vulnerable region #resilienceforall doi.org/10.3389/fbui...
PREPARE project, this model can help decision makers with mitigating risk in this seismically vulnerable region #resilienceforall doi.org/10.3389/fbui...
Reposted by Jack Williams
We are having a period of relative calm with new manuscript submissions. If you submit yours, it will be handled quickly by our editors 😉 !
⚒️
⚒️
2024, time to make a good resolution: Finish writing and SUBMIT your manuscript to TEKTONIKA DOAJ !
Free to publish, free to read. tektonika.online ⚒️
(Well, 👇 it seems that the AI I've been using is having a bit of trouble writing correctly T E K T O N I K A 🤭, but their notebook is fine)
Free to publish, free to read. tektonika.online ⚒️
(Well, 👇 it seems that the AI I've been using is having a bit of trouble writing correctly T E K T O N I K A 🤭, but their notebook is fine)
January 18, 2024 at 2:48 PM
We are having a period of relative calm with new manuscript submissions. If you submit yours, it will be handled quickly by our editors 😉 !
⚒️
⚒️
Finally making the migration from Twitter/X! Feel free to follow for sporadic posts about active faulting and seismicity in southern New Zealand (amongst other things) ⚒️
January 11, 2024 at 3:51 AM
Finally making the migration from Twitter/X! Feel free to follow for sporadic posts about active faulting and seismicity in southern New Zealand (amongst other things) ⚒️