Quick map of M7.3 earthquake offshore the Alaska Peninsula. Today's earthquake (green) has a very similar focal mechanism to the M7.8 2020 Sand Point event, which was dominantly strike-slip but caused a tsunami. Based on depths of mainshock and early aftershocks, could be an upper plate event. ⚒️

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

Slipmap for the earthquake of Colombia M6.4 of 8 June 2025. SLIPNEAR method. Preferred rupture plane (strike,dip,rake) : 50 20 112 with confidence : 47.% Discrimination among the two nodal planes may be considered reliable only if this confidence is larger or equal to 70%

Our new study just out in #NatureCommunications maps the deep structure of Campi Flegrei with unprecedented detail—and found that pressurized fluids, not magma, are the main cause of current unrest 🇮🇹 Read the full study here: 🔗 doi.org/10.1038/s414...

Auto slipmap with regional records (SLIPNEAR method, Géoazur/OCA) M 7.5 – DRAKE PASSAGE 2025-05-02 12:58:27.5 UTC Rupture plane not selected in an automated way. Plane dip to the NE (strike 326) shown. Rupture propagation mainly to the SE. Thanks to seismic records through IRIS

Mw=6.2, NEAR COAST OF ECUADOR (Depth: 21 km), 2025/04/25 11:44:55 UTC - Full details here: http://geoscope.ipgp.fr/scripts/seismes/fiche.php?seis=us7000pv06

Mw=6.3, TURKEY (Depth: 4 km), 2025/04/23 09:49:10 UTC - Full details here: http://geoscope.ipgp.fr/scripts/seismes/fiche.php?seis=us7000pufs

Auto slipmap with regional records (SLIPNEAR method, Géoazur/OCA) M 6.2 – Western Turkey - 2025-04-23 09:49:10 (UTC) EW nodal plane preferred with confidence 65% as the rupture plane. Rupt propagation mainly to the East. Thanks to seismic records from KOERI

Auto solution FMNEAR (Géoazur/OCA) with regional records for the M 5.2 – Southern California, 2025-04-14 17:08:28 UTC (Loc EMSC used to trigger inversion). Thanks to the seismic records provided through IRIS and SCEDC

The whole #MyanmarEarthquake rupture in one interferogram! This is three consecutive wide swath frames of ALOS-2 data, provided by JAXA through agreement with NASA. The line-of-sight (LOS) is ~perpendicular to fault strike, so most of what you see is vertical motion at bends and steps of the fault.

High resolution MAXAR satellite image reveals the #Myanmar #earthquake surface rupture north of the town of Sagaing. It is close to epicenter and N tip of the >400km long rupture. Right-lateral offset of ~3.2m is clearly illustrated by the distorsion and lateral shift of a dirt road striking E-W.

NASA JPL ARIA project analysis of data from Copernicus Sentinel-2 optical and Sentinel-1 radar images measured the slip on the Sagaing Fault in Myanmar. Quick preliminary map. More details later. Fault ruptured about 500 km (300 miles) in the magnitude 7.7 […] [Original post on mastodon.social]

Remote surface rupture observations for the M7.7 2025 Myanmar earthquake - soft rollout! doi.org/10.5066/P1RY... Simple fault trace and slip distribution from pixel tracking, high-res from available imagery. Watch for updates! ⚒️ USGS and collaborators effort led by @nadinegrr.bsky.social 🙏

The latest models from the USGS show slip, and associated strong shaking, extending much further to the south. Here I have plotted contours of estimated shaking over a map of population density. Note that the fault runs south through a narrow valley that is densely populated. ⚒️ 🧪 Myanmar earthquake

Cross-section of slip distribution by the USGS for the M7.7 Myanmar earthquake. Slip occured along the distance of about 250 km, maximum ~horizontal slip of 5.1 meters. ⚒🧪

Looking at the historical earthquake map and the preliminary USGS slip model below, it seems today's large earthquake filled partly the gap between 20 and 22 degrees North latitude.

Preliminary back-projection which seems to confirm the finite fault model: www.linkedin.com/posts/hongju...

First slip map for the Mw 7.8 Myanmar earthquake. Propagation of rupture towards the South. Slipnear method (Géoazur/OCA).

Fault segments and historical earthquakes along the Sagaing fault, which passes beaneath Mandalay, from Wang et al. (2014, JGR). doi.org/10.1002/2013...

The @ipgp.bsky.social #Geoscope solution 👇 shows mechanism of #Myanmar #earthquake (strike-slip, likely dextral rupture on #Sagaing fault) and the source time function with a rupture duration of 2 minutes. Magnitude is determined to be Mw7.9 with this solution. geoscope.ipgp.fr/index.php/en... ⚒️ 🧪

The USGS already released a shakemap for the M7.7 #earthquake in Myanmar a few minutes ago. This will be devastating. ⚒️🧪 earthquake.usgs.gov/earthquakes/...

Rapport scientifique et technique d'étape sur le séisme de magnitude 4.1 du 18 mars 2025 au nord de Nice, commune de Coaraze, et la séquence sismique qui a suivi. sismoazur.oca.eu/static/doc/s... sismoazur.oca.eu#/specific_re...

Une vidéo sur le séisme du 18 mars 2025 (M 4.1) près de Nice : analyse et contexte géologique www.youtube.com/watch?v=mROO... Merci à l'ObservaTerre - Epos-France pour la publication.

Mar 13 Campi Flegrei quake double (M4.6) on vertical N-S La Pietra Fault (~1km). 5% chance M≥4.5 soon; up to 1g shaking. Early warning worked. tinyurl.com/y3yw8ncr

On Mar 18, 2025, a Mw4.0 quake near Potenza showed normal faulting. ~2.2 MPa stress drop, MMI VI (~4.9%g) near epicenter, complex extension. Early-warning worked in seconds. Innovative monitoring (DAS, apps) boosted real-time resilience. sway.cloud.microsoft/CYKl7Cjmzuby...

Revised source inversions of the Ml4.1 and Ml3.8 shocks that occurred on March 18, 2025 just north of the city of Nice in southern France.

NLL-SSST-coherence high-precision earthquake location catalog for the 2025 #Santorini #Amorgos #earthquake swarm. Based on data from Institute of Geodynamics of the National Observatory of Athens (NOA-IG). Download & details: doi.org/10.5281/zeno...

Auto solution FMNEAR (Géoazur/OCA) with regional records for the M 4.0 – SOUTH SPAIN, 2025-02-27 02:29:32.3 UTC (Loc EMSC used to trigger inversion) sismoazur.oca.eu#/focal_mecha... emsc-csem.org/Earthquake_d... Thanks to the seismic records from Spain and Portugal provided through IGN and IRIS

Revised solution FMNEAR (Géoazur/OCA) with regional records for the M 4.8 - PORTUGAL, 2025-02-17 13:24:03.9 UTC (Loc EMSC used to trigger inversion). Mw 4.4 Joint inversion of waveforms and first motions. Thanks to the seismic records provided from Portugal through IRIS

Sunday update. Seismic activity has decreased significantly since last Thursday, but it hasn't stopped. To be continued ... #Santorini #Amorgos

🧪⚒️ The seismic swarm in Greece continues - and GPS stations on Santorini show that the island itself is deforming, signaling likely movement of magma deep in the crust. In our latest post, we explore a new detailed seismic catalog and come up with a possible interpretation. Read more:

Moment magnitudes and corner frequencies calculated for 437 events from the Santorini crisis (Ml>3.5, Jan 24 - Feb 13) using SourceSpec. Big thanks to the EIDA node of the National Observatory of Athens for keeping their services online during this critical period. sourcespec.seismicsource.org

Seismic activity NE of #Santorini has decreased dramatically over the last 24 hours. This behaviour is similar to that observed in SW Iceland in March 2021 and August 2022, where seismicity almost stopped after the eruption began.

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.

🤖 Ready to use artificial intelligence to revolutionize seismology? Then join us at the International Training School "AI 4 Seismology" on May 5-8, 2025 at @scadsai.bsky.social in Leipzig. So far confirmed trainers: - Tarje Nissen-Meyer (@exeter.ac.uk ) - René Steinmann (@gfz.bsky.social )

#EarthquakeReport for M7.6 #Earthquake #Sismo #Terremoto near #CaymanIsland Left-lateral strike-slip earthquake along Swan Island fault See 2020 report for tectonic background earthjay.com?p=9322 earthquake.usgs.gov/earthquakes/...

Profile view from southeast. High-precision relocations done with NLL-SSST-coherence (doi.org/10.1029/2021...) and data from the Hellenic Seismic Network, Institute of Geodynamics of the National Observatory of Athens (NOA-IG).

High-precision relocation of earthquake activity offshore Santorini, Greece (2024-01-01 to today).

Sentinel-1 dInSAR data we processed over Santorini area for the period 24 January 2025 - 05 February 2025. Fringes are mostly due to atmospheric disturbance. For the past 2 weeks, there is no major volcanic deformation visible in data.

Un peu de science pour comprendre la crise sismique de janvier-février 2025 à Santorin www.epos-france.fr/blog/2025/02...

Agean sea 89 focal mechanisms from 27/01 to 05/02/2025 automatically sent to the EMSC, from the Observatoire de la Côte d'Azur (OCA) using FMNEAR waveform inversion. All except 4 in parentheses compatible with NW-SE horizontal extension. seismicportal.eu/mtws/ sismoazur.oca.eu#/focal_mecha...

Updated version of the seismic activity in the Cyclades Islands, and the Gutenberg-Richter law, with 1022 earthquakes since 27th January. Please refer to the Greek authorities for more information, stay safe.

The seismic crisis between #Santorini and #Amorgos has been slowing down a bit during the last 24h and shows a slight migration toward the NE.

The EMSC opened a special web page on #Santorini earthquake sequence : www.emsc-csem.org/Special_repo...

More than 360 earthquakes reported by the EMSC in 6 days. The seismic sequence near #Anydros Island has clearly been intensifying during the latest hours. #Santorini #Amorgos #Greece.

Mid-crustal depth earthquakes in Cochabamba-Bolivia? Yes, Fernandez et al. provide valuable insights into these earthquakes and show how they are concentrated in the main thrust fault shear zone. Read now: doi.org/10.26443/sei...

Auto solution FMNEAR (Géoazur/OCA) with regional records for the M 6.0 - TAIWAN, 2025-01-20 16:17:27 UTC (Loc USGS used to trigger inversion). Thanks to the seismic records provided through IRIS

#DInSAR Automatic Sentinel-1 coseismic Interferogram (Descending Pass) (Track 121) for the recent seismic in #China with a magnitude of Mw 7.1, is available on @epos-es.bsky.social geoportal @fraxinsar.bsky.social

Thanks @paleoquake.bsky.social for sharing this mp.weixin.qq.com/s/qtB9yU9E6T...