Krittanon (Pond) Sirorattanakul's Avatar

Krittanon (Pond) Sirorattanakul

@seismopond

Earthquake scientist from Thailand || BS @LehighU 2018 || PhD @Caltech 2024 || Also love badminton and biking || he/him || ksirorat.people.caltech.edu

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Latest posts by Krittanon (Pond) Sirorattanakul @seismopond

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Surface ruptures of the Myanmar M7.7 earthquake mapped from space An extremely long rupture is confirmed

⚒️ 🧪

New satellite imaging of the Myanmar earthquake area confirms that the rupture was unusually long: ~500 km.

We discuss the data, the rupture, and the implications, in our latest post.

earthquakeinsights.substack.com/p/surface-ru...

01.04.2025 20:59 👍 97 🔁 43 💬 4 📌 2
Distribution of relocated (colored circles) earthquakes and remnant located earthquakes >2.8 (open circles) retrieved from the data of the CMGSMO array projected on a geographic map. CMF, Churachandpur–Mao fault; EIBRSZ, Eastern Indo–Burma ranges seismic zone; KBF, Kabaw fault; KF, Kani fault; YUF, Ye–U fault. Credit: Mon et al., 2023, SRL

Distribution of relocated (colored circles) earthquakes and remnant located earthquakes >2.8 (open circles) retrieved from the data of the CMGSMO array projected on a geographic map. CMF, Churachandpur–Mao fault; EIBRSZ, Eastern Indo–Burma ranges seismic zone; KBF, Kabaw fault; KF, Kani fault; YUF, Ye–U fault. Credit: Mon et al., 2023, SRL

🌟OPEN ACCESS: MYANMAR PAPERS🌟As a service to researchers working on the 2025 M7.7 Myanmar earthquake, we have curated a list of papers related to the region and its faults, free until until April 16. ⚒️

#BSSA: pubs.geoscienceworld.org/bssa/pages/a...

#SRL: pubs.geoscienceworld.org/srl/pages/ap...

01.04.2025 21:52 👍 26 🔁 15 💬 1 📌 1
Post image

@caltech.edu has a press release about our article recently published in @nature.com. This work is a result of collaborative efforts across disciplines, from seismology (@caltechseismo.bsky.social) to engineering and aeronautics (GALCIT).

Read more here: caltech.edu/about/news/e...

14.03.2025 02:32 👍 3 🔁 0 💬 0 📌 0

Nature social media account has also shared our paper!

14.03.2025 02:04 👍 2 🔁 0 💬 0 📌 0
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Sliding and healing of frictional interfaces that appear stationary Nature - Digital image correlation measurements show that nominally stationary interfaces subjected to constant shear and normal loads are sliding at extremely small rates, confirming the...

Those without subscription to Nature can read full-text article here: rdcu.be/ediAj

Thanks @springernature.com for the SharedIt initiative.

13.03.2025 02:23 👍 0 🔁 0 💬 0 📌 0

(4/4) This work has wide-ranging applications in earthquakes, landslides, and material sciences. The longer you wait, the larger the peak friction in subsequent slip events, making seismic hazards healing-dependent.

13.03.2025 02:23 👍 0 🔁 0 💬 1 📌 0

(3/4) We also find that the slip rates are decreasing logarithmically with time, down to 10^{-12} m/s after a few days. This decaying slip rate reflects healing, suggesting that the interfaces become stronger with time.

13.03.2025 02:23 👍 0 🔁 0 💬 1 📌 0

(2/4) We mimic this system in our lab and consider the case where shear force is smaller than static friction. Contrary to the traditional understanding, we find that these interfaces are sliding, accumulating the slip of about 1/5 of hair width after 1 day.

13.03.2025 02:23 👍 0 🔁 0 💬 1 📌 0

(1/4) Imagine a block on an inclined plane. If the incline is very small, the block would not move. One would have to tilt the incline plane upward until gravity overcomes the static friction. This is the traditional understanding of friction.

13.03.2025 02:23 👍 0 🔁 0 💬 1 📌 0
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Sliding and healing of frictional interfaces that appear stationary - Nature Digital image correlation measurements show that nominally stationary interfaces subjected to constant shear and normal loads are sliding at extremely small rates, confirming the predictions of rate-a...

A chapter from my @caltech.edu PhD thesis has been published in @nature.com. We (me, S. Larochelle, V. Rubino, N. Lapusta, A. Rosakis) show that interfaces under non-zero shear stress are always sliding, even if they appear to be stationary to the naked eye.

www.nature.com/articles/s41...

13.03.2025 02:21 👍 11 🔁 1 💬 2 📌 0