stephen hernandez
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hernarado.bsky.social
stephen hernandez
@hernarado.bsky.social
21 followers 120 following 3 posts
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Reposted by stephen hernandez
seismosocam.bsky.social
In a new #BSSA paper, scientists consider why Alaska seismic station NP.ARTY experiences higher ground acceleration than other nearby stations. They found that local topography and shallow low-velocity material play important roles in amplification. ⚒️

pubs.geoscienceworld.org/ssa/bssa/art...
October 24, 2025 at 9:02 PM
Reposted by stephen hernandez
seismosocam.bsky.social
🌟OPEN ACCESS🌟 Although Australia isn’t known for high seismicity, it does experience moderate to large earthquakes. A new #BSSA paper presents a way to resolve source parameters for well-recorded post-1994 earthquakes within Australia. ⚒️

pubs.geoscienceworld.org/ssa/bssa/art...
October 25, 2025 at 4:00 AM
Reposted by stephen hernandez
seismosocam.bsky.social
How might a sudden change in slab dip affect rupture propagation? A new #SRL paper proposes that in the case of megathrusts that occur south of the Alaska Peninsula, such as change may have acted as a barrier for two recent quakes. ⚒️

pubs.geoscienceworld.org/ssa/srl/arti...
October 24, 2025 at 10:02 PM
Reposted by stephen hernandez
seismosocam.bsky.social
Parallel Seismic Data Processing Performance with Cloud‐Based Storage #SRL

What does cloud computing really mean with respect to seismology?

pubs.geoscienceworld.org/ssa/srl/arti...
October 13, 2025 at 3:02 PM
Reposted by stephen hernandez
igepnecuador.bsky.social
#ComunidadIG Mejoras y optimización de redes de vigilancia sísmica y geodésica en el volcán #SierraNegra.

Más información en el siguiente enlace:
👉 igepn.short.gy/Oaf4Nj
September 9, 2025 at 4:11 PM
Reposted by stephen hernandez
andyfbell.bsky.social
A summary of our recent fieldwork in Galapagos (which came out when I was on strike last week). With @hernarado.bsky.social @volcanodr.bsky.social @earthscope.org
igepnecuador.bsky.social Instituto Geofísico @igepnecuador.bsky.social · Sep 9
#ComunidadIG Mejoras y optimización de redes de vigilancia sísmica y geodésica en el volcán #SierraNegra.

Más información en el siguiente enlace:
👉 igepn.short.gy/Oaf4Nj
September 16, 2025 at 12:41 PM
Reposted by stephen hernandez
jascha.bsky.social
M4.3 shallow #earthquake near Berkeley, CA a few hours ago, strike slip mechanism, possibly on the Hayward Fault Zone. ⚒️🧪

earthquake.usgs.gov/earthquakes/...
Screen shot of earthquake map from the USGS NEIC website
September 22, 2025 at 11:01 AM
Reposted by stephen hernandez
drwendyrocks.bsky.social
M4.3 earthquake near Berkeley as recorded by a seismic station near Hollister, CA.
Recording of the earthquake. It looks like a wiggle with a purple dot over the top. The different colored dots indicate different earthquakes Zoomed in recording of the earthquake shown in the last image. It looks like a wiggly line going across the page Information about the 4 earthquakes recorded by the seismic station. A M2.3 in Northern California, a M5.0 near the Mariana islands and the M4.3. Map showing the location of the seismic station near Hollister.
September 22, 2025 at 12:07 PM
Reposted by stephen hernandez
igepnecuador.bsky.social
La ceniza volcánica es roca pulverizada que puede afectar la salud humana, la vegetación y los animales.

😷 Usa mascarilla y gafas
🌿 Sacude las hojas
🐾 Protege a tus mascotas

La prevención empieza con el conocimiento.
📚 alertasecuador.gob.ec/volcan
📚 igepn.edu.ec/mapas/amenaz...
September 10, 2025 at 5:04 PM
Reposted by stephen hernandez
volcanodr.bsky.social
Taxi-H2OTaxi-Lancha-H2OTaxi-Taxi-H2OTaxi-Bus-Plane. Back to Quito after a successful 2 weeks of geodetic & seismic research w/ @igepnecuador.bsky.social @andyfbell.bsky.social @hernarado.bsky.social @earthscope.org @ Sierra Negra volcano.
August 22, 2025 at 8:43 PM
Reposted by stephen hernandez
seismosocam.bsky.social
Improving the Transportability of a Deep Learning Denoising Model Using Transfer Learning Techniques #SRL ⚒️

How can transportability of deep learning denoising methods be improved?

pubs.geoscienceworld.org/ssa/srl/arti...
September 11, 2025 at 5:00 PM
Reposted by stephen hernandez
andyfbell.bsky.social
Sierra Negra. With @volcanodr.bsky.social @hernarado.bsky.social @earthscope.org
August 21, 2025 at 1:36 PM
Reposted by stephen hernandez
seismosocam.bsky.social
LAB2022: A New Nodal Seismic Array Spanning the Los Angeles Basin #SRL ⚒️

Interested in seismic velocity changes of the LA Basin? Check out this new paper!

pubs.geoscienceworld.org/ssa/srl/arti...
August 20, 2025 at 2:02 PM
Reposted by stephen hernandez
seismosocam.bsky.social
Is the recent 2022 magnitude 6.4 earthquake that struck near Ferndale, California, a repeat of a previous event that occurred in the same region, 47 years prior? Find out in this new #SRL paper ⚒️

pubs.geoscienceworld.org/ssa/srl/arti...
August 5, 2025 at 2:00 AM
Reposted by stephen hernandez
jascha.bsky.social
Another quick comparison of the 1952 #Kamchatka #earthquake from MacInnes et al. (2010) with today’s M8.8 event. The aftershock areas are similar, as well as one region of foreshocks. The updated USGS rupture model has a max slip of 10m versus 12m for 1952, with SW rupture direction. 🧪⚒️
Figure from Macinnes et al. conpared to map of today’s Kamchatka earthquake by Jascha Polet.
July 30, 2025 at 12:37 PM
Reposted by stephen hernandez
bertranddelouis.bsky.social
Auto slipmap with regional records (SLIPNEAR method, Géoazur/OCA) M 7.3 - ALASKA - 2025-07-16 20:37:39 (UTC)

Plane striking N343 (NNW-SSE) shown.

Rupture direction to the South-East constrained by nearby stations (quite opposite to the USGS result).

Thanks to seismic records through IRIS
July 17, 2025 at 9:36 AM
Reposted by stephen hernandez
alisheridan.bsky.social
“The village’s 300 inhabitants had to leave their homes on 19 May after geologists monitoring the area warned that the glacier appeared unstable. Now many of them may never be able to return.

Climate change is causing the glaciers – frozen rivers of ice – to melt faster and faster..”
Swiss glacier collapse buries most of village of Blatten
The Swiss village of Blatten has been partially destroyed after a huge chunk of glacier crashed down into the valley. Although the village had been evacuated some days ago because of fears the Birch
brandednepal.com
May 28, 2025 at 8:51 PM
Reposted by stephen hernandez
judithgeology.bsky.social
⚒️ 🧪

Two weeks ago, a video appeared showing slip in the Myanmar earthquake - the first time this has ever been recorded on video.

What can we learn from it? We deep-dive the science.

earthquakeinsights.substack.com/p/remarkable...
Remarkable video captures fault slip in the Myanmar earthquake
We deep dive the possibilities presented by a witnessed rupture
earthquakeinsights.substack.com
May 28, 2025 at 4:03 PM
Reposted by stephen hernandez
brandontbishop.bsky.social
Pretty convinced that our work at Saint Louis University on the Cauca Cluster earthquakes has developed to the point we can probably make a fairly decisive argument on the cause or causes of the intermediate depth earthquakes....

Maybe we pitch it at AGU this December, if US science still exists?
May 28, 2025 at 11:44 PM
Reposted by stephen hernandez
tuffcookie.bsky.social
There's a great paper by Dave Hill (former USGS seismologist) about the Mammoth crisis at link.springer.com/chapter/10.1...) He spent much of his career running the Long Valley Observatory (now CalVO) and working to repair trust in the USGS in Mammoth.
Volcanic Unrest and Hazard Communication in Long Valley Volcanic Region, California
The onset of volcanic unrest in Long Valley Caldera, California, in 1980 and the subsequent fluctuations in unrest levels through May 2016 illustrate: (1) the evolving relations between scientists mon...
link.springer.com
May 21, 2025 at 5:04 PM
Reposted by stephen hernandez
xkcd.com
PhD Timeline xkcd.com/3081
April 25, 2025 at 3:32 PM
Reposted by stephen hernandez
callanbentley.bsky.social
Definitely "full screen" the last two images. ⚒️
March 5, 2025 at 11:16 AM
Reposted by stephen hernandez
atterholt.bsky.social
DAS meets the Moho! New paper in Science Advances w/ Zhongwen Zhan. We developed a method for finding Moho reflections in DAS data. One event can yield 10s of km of fine-scale Moho depth measurements. We applied it to dozens of SoCal events and learned a lot about the Garlock, Coso, and more.
Fine-scale Southern California Moho structure uncovered with distributed acoustic sensing
The Moho reflected phase measured by DAS shows abrupt crustal thickness changes across the Garlock Fault and Coso Volcanic Field.
doi.org
November 27, 2024 at 7:34 PM
Reposted by stephen hernandez
jannesmunch.bsky.social
Hi Seismo-Bluesky! I decided to test a pipeline with SeisBench, PyOcto, NonLinLoc, and HypoDD on the Santorini sequence. The level of activity (>4,500 events) is truly stunning! There are repeated bursts migrating backwards and forwards, spreading outwards from a narrow, almost linear channel.
February 10, 2025 at 1:23 PM
Reposted by stephen hernandez
davidho.bsky.social
The most iconic figure in the environmental sciences is the Keeling Curve, the CO₂ record from Mauna Loa, Hawaii.

@noaa.gov had a wonderful site where you could visualize and download these data, and now it's just gone. These data belong to us and we should not let this happen!
A line graph showing atmospheric CO2 levels at Mauna Loa Observatory from 1955 to 2025. The y-axis represents CO2 mole fraction in parts per million (ppm), ranging from 320 to 420 ppm, while the x-axis is years.
February 5, 2025 at 11:38 AM