혜정 킴/HyeJeong Kim
seairhjkim.bsky.social
혜정 킴/HyeJeong Kim
@seairhjkim.bsky.social
@ Géoazur, FR // A seismologist who is interested in imaging from the very shallow to deep. Think ocean bottom seismometers are beautiful.

Paper archive + random thoughts
Pinned
Kim, H.J., Lin, F.-C., Pechmann, J. C., Hardwick, C. L., & McKean, A. P. (2025). Seismic imaging of the Salt Lake basin using joint inversion of receiver functions and Rayleigh wave data. JGR:SE, 130, e2024JB030927. agupubs.onlinelibrary.wiley.com/doi/full/10....
(1/4)
doi.org
Reposted by 혜정 킴/HyeJeong Kim
New! We study the disruptive 2025 earthquake unrest near #Santorini using machine-learning derived seismicity as virtual stress meters at depth. We show the unrest was due to a magma dike intrusion, imaging in detail a complex, rebounding process of dike propagation.
www.science.org/doi/10.1126/...
The 2025 Santorini unrest unveiled: Rebounding magmatic dike intrusion with triggered seismicity
Magmatic intrusion in Earth’s crust can lead to hazardous volcanic eruptions, but the physical processes involved remain largely hidden from direct observation. We used machine learning–derived seismi...
www.science.org
November 21, 2025 at 7:32 AM
These days, for good news about myself, I feel relieved. For the good news of others, I feel excited and happy! Especially for the recent couple of news of colleagues getting a permanent position, I feel extremely happy for them. (Is this aging...?)
November 13, 2025 at 9:26 AM
I feel I need to start a #lifeinGeoazur thread! To memorize some good moments with colleagues here.
October 17, 2025 at 12:12 PM
It's always so cheerful when people write my name as "HeyJeong" in emails. Also, it means they type my name than copypasting, it feels great with a human touch!
October 14, 2025 at 2:01 PM
Reposted by 혜정 킴/HyeJeong Kim
We've completed our deployment of 44 ocean-bottom seismometers at Galapagos Triple Junction! In our recent blog post, we describe all the prep and effort from our incredible technicians and crew that goes into making an OBS deployment a success!

galapagostriplejunctionobs.github.io/deployment/W...
Blog Posts
The Galapagos Triple Junction OBS Deployment is an ambitious ocean-bottom seismometer deployment to image and understand mid-ocean ridge dynamics.
galapagostriplejunctionobs.github.io
October 7, 2025 at 3:59 PM
Belated happy mid-autumn festival to everyone who has a cultural background of using the lunar calendar! Sadly, in Europe, there's no Thanksgiving, which means no fall holiday! Hence, a self-embracement of the moon is something I couldn't miss!

picture: the moonset from Antibes, FR. w/ some edits
October 7, 2025 at 9:10 AM
Reposted by 혜정 킴/HyeJeong Kim
Super proud of this paper w @hajanisz.bsky.social that went live a couple weeks ago!

The culmination of countless Zoom meetings (ok, often happy hours, beer in hand) nerding out on OBS data. Some of the most fun I've had on a paper. Yes, there'll be more...

pubs.geoscienceworld.org/ssa/srl/arti...
Ambient Noise Analyses at Broadband Ocean‐Bottom Seismometers: Data Quality and Transfer Function Corrections | Seismological Research Letters | GeoScienceWorld
Abstract. Seismic ambient noise tomography has revolutionized regional crustal and upper‐mantle imaging for broadband ocean‐bottom seismometer (BBOBS)
pubs.geoscienceworld.org
October 7, 2025 at 4:54 AM
Reposted by 혜정 킴/HyeJeong Kim
We're counting down as we deploy the last 10 seismometers of our array at the Galapagos Triple Junction! In the meantime, check a member of the science team's perspective on the work we've been doing in our latest blog post:
galapagostriplejunctionobs.github.io/deployment/L...
Blog Posts
The Galapagos Triple Junction OBS Deployment is an ambitious ocean-bottom seismometer deployment to image and understand mid-ocean ridge dynamics.
galapagostriplejunctionobs.github.io
September 27, 2025 at 7:01 AM
Reposted by 혜정 킴/HyeJeong Kim
New paper alert. Volcanic crisis reveals coupled magma system at Santorini and Kolumbo. Great work led by Marius and Jens, thanks all for working on that together! It can be found in today’s issue of Nature.

www.nature.com/articles/s41...
September 24, 2025 at 4:58 PM
wow, time flies. Already Autumn.
eos.org Eos @eos.org · Sep 22
Happy Equinox, from Eos!

Today, Earth’s axis is tilted neither toward nor away from the Sun, meaning the Sun’s direct rays fall on the Equator. Depending on which hemisphere you inhabit, today is either the first day of fall or the first day of spring!

Image credit: NOAA
September 22, 2025 at 5:43 PM
Reposted by 혜정 킴/HyeJeong Kim
With indefatigable energy, our team has finished deploying 10 seismometers, forming just a patch of likely the most ambitious OBS array yet! Check out our fourth blog post of our cruise for more about our day-to-day life, and stay tuned for more!
galapagostriplejunctionobs.github.io/deployment/F...
Blog Posts
The Galapagos Triple Junction OBS Deployment is an ambitious ocean-bottom seismometer deployment to image and understand mid-ocean ridge dynamics.
galapagostriplejunctionobs.github.io
September 19, 2025 at 7:57 PM
I moved to France ~three weeks ago to work as a postdoc fellow at Géoazur! I am enjoying grabbing new types of datasets from MERMAIDs in a new group, chatting with so many geophysicists around, and having an office mate who is an awesome engineer of the mermaid system!
September 13, 2025 at 3:19 PM
Exciting new deployment coming up around the Galapagos Triple Junction area! Big shoutout to Anat for making this awesome website so that people can follow the marvelous deployment process from anywhere in the globe!
September 10, 2025 at 6:33 PM
wooow 😮de Oliveira Coelho, D.L., de Bianchi, M.B., Maurício, Í.C.B.S. et al. Ocean drones enabling long-term earthquake monitoring in target zones. Sci Rep 15, 19089 (2025). doi.org/10.1038/s415...
Ocean drones enabling long-term earthquake monitoring in target zones - Scientific Reports
Scientific Reports - Ocean drones enabling long-term earthquake monitoring in target zones
doi.org
September 10, 2025 at 7:15 AM
Transferring at Dubai, UAE, on the way to Europe from Korea. I feel like this airport has customers of the highest diversity I've ever experienced. Certainly, I feel from the skin that this is the gateway to Europe. Likely similar to back in the historic times when the silkroad existed!
August 26, 2025 at 2:03 AM
Reposted by 혜정 킴/HyeJeong Kim
In a new #SRL paper, scientists present a dataset collected from the Los Angeles basin for one month during the summer of 2022 — LAB2022. ⚒️

pubs.geoscienceworld.org/ssa/srl/arti...
August 25, 2025 at 9:01 PM
Reposted by 혜정 킴/HyeJeong Kim
Spreading, subducting, slab window-ing: There’s a lot going on at the Chile Triple Junction. New #AGUPubs research takes a closer look.

eos.org/research-spo...
Finding the Gap: Seismology Offers Slab Window Insights - Eos
Studying slow tremors has helped researchers home in on the youngest part of the Chile Triple Junction’s gap between subducting plates, which offers a window to the mantle.
eos.org
August 18, 2025 at 10:52 PM
Reposted by 혜정 킴/HyeJeong Kim
Recovering ocean bottom seismographs in the South Pacific near Wallis Island. We are 5 for 5 so far.
August 5, 2025 at 12:01 AM
Reposted by 혜정 킴/HyeJeong Kim
New ideas published in @geosociety.bsky.social Geology that the Northern Appalachian anomaly beneath the Eastern US is a migrating small-scale convection cell originating from past rifting of the Labrador Sea @gernon.bsky.social @sasbrune.bsky.social
pubs.geoscienceworld.org/gsa/geology/...
A viable Labrador Sea rifting origin of the Northern Appalachian and related seismic anomalies | Geology | GeoScienceWorld
pubs.geoscienceworld.org
July 30, 2025 at 5:21 AM
Paper alert: Data mine paper regarding dense geophone (2 linear w/ sparsely scattered) array in LA basin. F.C-. Lin, R. W. Clayton, H. A. Ford, A. Allam, K. Gkogkas, V. Villa, H.J. Kim; LAB2022: A New Nodal Seismic Array Spanning the Los Angeles Basin. SRL doi: doi.org/10.1785/0220...
LAB2022: A New Nodal Seismic Array Spanning the Los Angeles Basin | Seismological Research Letters | GeoScienceWorld
Abstract. LAB2022 is a new temporary array consisting of 273 geophones that was deployed in the Los Angeles basin for one month during the summer of 2022.
doi.org
July 31, 2025 at 12:54 AM
Leaving US. Had 4 hours of extra time to spend in SLC due to the delay (which I learned just before passing the security check point)! It is a great place to live in! Will miss here and the people here so much.
July 28, 2025 at 8:01 PM
Whoa. International moving is really hard! I had help from family 2 years ago as I was moving out right after commencement, but this time alone, I am almost getting overwhelmed.
On my way to the office to empty it, I met a professor and he mentioned that an international move never gets easy...😇
July 27, 2025 at 5:08 PM
Reposted by 혜정 킴/HyeJeong Kim
Global Primary and Secondary Microseism Multi-Decade Geographic Variation, Secular Intensification, and Period Lengthening, Richard C. Aster, Thomas A. Lee, Frederik Jozef Simons, et al., ESS Open Archive . July 13, 2025. doi.org/10.22541/ess...
Global Primary and Secondary Microseism Multi-Decade Geographic Variation, Secular Intensification, and Period Lengthening
Earth’s seismic background wavefield is dominated by two distinct processes that couple ocean wave energy to the global microseism wavefield. We examine the period-dependent temporal evolution for the...
doi.org
July 25, 2025 at 3:15 PM
Sunset seen from the hallway right in front of me office. I will miss this.
July 24, 2025 at 2:37 AM
Reposted by 혜정 킴/HyeJeong Kim
In the next few months, Japan will finish work on an instrumented network of seafloor cables and wire it directly into a national early warning system.

Learn more: scim.ag/44FXkxI
July 10, 2025 at 4:21 PM