Jack Williams

Didn't take long since moving to the Bay Area to feel my first shake 😅 earthquake.usgs.gov/earthquakes/...

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!

Map of New Zealand showing the location of the Nelson-Tasman region in the northwest part of the South Island.

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 😀

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...

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...

Cover page of tektonika

🆕 #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...

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.

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...

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

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!

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.

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-...

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…

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...

I'm back world! Reporting on cool active tectonics and other stuff from Aotearoa New Zealand

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…

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

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 ⚒️ 🧪

Reminder 👇 ! Submit your manuscripts to DOA journals ! And if your topics are tectonics submit to TEKTONIKA !

tektonika.online

Hi Ken, the dramatic tilting and folding you can see in the sedimentary beds at Nugget Point are all part of a larger system of Cretaceous-age folds that you can see throughout the Catlins. You can find out more here: en.wikipedia.org/wiki/Southla...

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)

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...

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...

We are having a period of relative calm with new manuscript submissions. If you submit yours, it will be handled quickly by our editors 😉 !
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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) ⚒️