Here is what the M4.7 #MalibuEarthquake looked like when it was detected by our DAS array near Ridgecrest, CA. The bold horizontal line represents the strain detected on the multitude of channels along the length of the fiber optic cable. View the live DAS feed at:

Using fiber-optic cables, scientists estimated that the Mojave Desert may lose 30 cubic kilometers (7 cubic miles) of water annually. eos.org/articles/fiber…

John Eiler of Caltech GPS recounts upbringing in Madison, geology University of Iowa, geochemistry UW–Madison Science, pivoting from field work to building precision instrumentation, and the goal to capture and assess every isotopic variety in the universe heritageproject.caltech.edu/interviews-upd…

Congratulations to Seismo Lab Director and Professor, Mike Gurnis for receiving the AGU Inge Lehmann Medal, honoring his outstanding contributions to the understanding of the Earth's deep interior! Dr. Gurnis will be accepting his award at the annual AGU meeting in Washington DC

A hypothesis-testing paper out in JGR Oceans! Fastest review process! Using oceanographic models and real data, we confirm seafloor scattering as the key factor in generating abyssal T-waves. We also find warming in the Equatorial Atlantic. Details here: agupubs.onlinelibrary.wiley.com/doi/full/10.10…

Thanks to everyone attending SSA's #Photonic #Seismology meeting! Talks, posters and demonstrations were outstanding and a great glimpse at the future of this field. We're looking forward to our 2025 topical on #environmental seismology in Denver. buff.ly/4059PTb

Its #SpookySeason so in lieu of #FieldPhotoFriday this week, we have a story about the old Kresge Lab by one of our emeritus professors Tom Heaton. The place was old and creepy to say the least, there were parts dug into the mountain so seismic equipment could be on bedrock which

As a first-time voter, I just flew from California to Pennsylvania to get the attention I deserve... And give a talk too, in the geoscience department of Penn State Penn State University! Big thanks to Tieyuan Zhu Tieyuan Zhu for the invitation.

New study alert! The 6 subevents of the 2024 Mw 7.5 Noto Peninsula earthquake show complex rupture pattern—a slow start, an onshore westward break, then an offshore rupture 20s later that fueled the tsunami! Potential for better tsunami warnings🌊 more: doi.org/10.1029/2024GL…

DAS meets the Moho! New Science Adv paper w/ Zhongwen Zhan. We developed a method for finding Moho reflections in DAS data. One EQ can yield 10s of km of fine-scale Moho depth estimates. We used it on SoCal EQs and learned about the Garlock, Coso, and more doi.org/10.1126/sciadv…

This season, we're thankful for the incredible diversity at the Seismo Lab! Like seismic waves our researchers travel from around the world to bring unique insights and ideas, pushing seismology forward and enriching our scientific journey. Grateful for every perspective that

#EatonFire as we evacuated last night. Arcadia, around midnight.

Strong Santa Ana winds will continue Thursday and Friday. New wildfires can start, and existing fires could get worse. Be Prepared! Visit ready.ca.gov and lacounty.gov/emergency for emergency resources and information.

Wind kicks up ashes and dust from the #EatonFire! Take care.

Congratulations to Charles Langston, Weiqiang Zhu, Jeffrey Given, and James “Jim” Mori on their recent 2025 SSA honors! Each has made significant contributions to seismology and has a special connection to the Caltech Seismological Laboratory. Charles Langston (PhD '76)

This is a work that I never imagined possible before: using seismic velocity changes observed on DAS to constrain dike geometry! Congratulations, Eli Bird !

It's that time of year! This week we welcomed prospective grad students visiting the Seismo Lab! They went on tours exploring our research, facilities, community, and the science that drives us! Exciting to see the next generation of seismologists on their journey! #SeismoLab

🚨 New paper out! AGU (American Geophysical Union) We systematically evaluate the instrument response, noise levels, and amplitude saturation of telecom fiber‐optic DAS — highlighting the potential for earthquake early warning and seismic imaging and monitoring. tinyurl.com/33kkbhf7 #Seismology #DAS

#MyanmarEarthquake may be a long supershear event (~5 km/s, ~350 km rupture), evidenced by S wave arrivals on the strong motion data, which explains strong shaking felt far away. Supershear amplifies damage, calls for urgent rescue needs & infrastructure strengthening.

Minute-scale dynamics of recurrent dike intrusions in Iceland with fiber-optic geodesy | Science science.org/doi/10.1126/sc…