A rare, ultra deep earthquake (~400 km) in the Gulf of Naples!

Published in #GJI Geophysical Journal International: "Source parameters of very low frequency events during the Mayotte seismo-volcanic crisis (May 2018–January 2022)", Laurent et al. This is Fig. 1: please visit academic.oup.com/gji/article/... to read the paper. @royalastrosoc.bsky.social

Mw=7.6, NEAR EAST COAST OF HONSHU, JAPAN (Depth: 45 km), 2025/12/08 14:15:11 UTC - Full details here: http://geoscope.ipgp.fr/scripts/seismes/fiche.php?seis=us6000rtdt

#EarthquakeReport for M8.8 #Earthquake offshore of #Kamchatka #Russia tied 8th largest magnitude temblor instrumentally recorded @USGS_Quakes finite fault slip model 8+ meters slip similar to 1952 M9 learn about tectonics here: earthjay.com?p=12053 earthquake.usgs.gov/earthquakes/...

Pyroclastic flows at Etna have been confirmed by INGV ⚒️🌋

I also derived a new elevation model from the aerial images, allowing me to visualize the elevation change in the affected areas. The rocks and debris in the valley are locally up to 32m thick and I estimate the total displaced volume is about 11 million cubic meters. #Blatten

"we explain the ”unusual” waveform signature of the Myanmar earthquake by a multiple, asymmetric bilateral rupture, involving boomerang-like back-rupture propagation and supershear." Preprint by Inoue, et al. about the Myanmar quake eartharxiv.org/repository/v... ⚒️🧪

Achieving Success in Seismic Network DOIs for data sharing and attribution! The seismological community strategy is a success, citations improved and licensing is starting. In this paper Pedersen et al., propose recommendations for the way forward Read now: seismica.library.mcgill.ca/article/view...

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]

Very (very) rough analysis indicates >6 m of slip. I resolve pixel offset using DIC in experimental cm sized samples with speckle pattern, and never used it before on satellite images. However the dextral offset is pretty clear, and I trust my calibration so the slip magnitude should be about right.

First Satellite Images from Myanmar are available. Surface Deformation along the Sagaing Fault and the collapsed Ava.Bridge are visible in Downtown Sagaing. Pictures and Videos from the Surface Rupture have been reported since Friday. Via browser.dataspace.copernicus.eu #Myanmar #Earthquake

Mw=7.1, TONGA ISLANDS (Depth: 16 km), 2025/03/30 12:18:43 UTC - Full details here: http://geoscope.ipgp.fr/scripts/seismes/fiche.php?seis=us7000pntq

The fault involved in the M7.7 earthquake in #Myanmar is well known but the #Mandalay area didn't show much seismic activity so far.

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.

Mw=7.9, MYANMAR (Depth: 35 km), 2025/03/28 06:20:54 UTC - Full details here: http://geoscope.ipgp.fr/scripts/seismes/fiche.php?seis=us7000pn9s

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

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...

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.

Mw=6.2, SOUTH OF PANAMA (Depth: 13 km), 2025/03/21 14:50:51 UTC - Full details here: http://geoscope.ipgp.fr/scripts/seismes/fiche.php?seis=us7000pllt

#EarthquakeReport #TsunamiReport for #OTD in 2011 M9.1 #Earthquake offshore of #Japan generated 50+m of megathrust fault slip produced local and transpacific #Tsunami learn more earthjay.com?p=9773 and @calconservation.bsky.social @cageosurvey.bsky.social storymaps.arcgis.com/stories/d230...

🌀 Les stations de l'OVPF-IPGP n'ont pas été épargnées par les vents cycloniques de #Garance: stations détruites, panneaux solaires brisés, antennes cassées, portes de coffret arrachées... 👨‍🔧Les équipes restent mobilisées pour remettre en état ce réseau et évacuer prochainement les stations détruites.

And now for something completely different: bsky.app/profile/wear...

@alomaxnet.bsky.social (Lomax) uses aftershocks as virtual observations at the depth of rock deformation surrounding an earthquake rupture to image in 3D the fault slip during the earthquake. Read more: seismica.library.mcgill.ca/article/view...

🌀Situation post-cyclone #Garance. Grâce à la forte mobilisation des équipes de l’OVPF-IPGP, l’observatoire a de nouveau le contact avec 65% de ses stations sur le terrain (contre 15% à la fin du cyclone). L'OVPF-IPGP reste mobilisé pour remettre en état ce réseau le plus rapidement possible.

Un séisme de magnitude 5.0)a été enregistré le dimanche 02 mars 2025 à 20:01 (heure locale) et identifié d'origine Tectonique. L'épicentre a été localisé à 57 km à l'est-nord-est de Trinité, à 46 km de profondeur. Si vous avez ressenti ce séisme, merci de témoigner sur www.franceseisme.fr

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...

Di Giacomo et al. had a fresh look at the time-dependent uncertainty related to early analog instrument picks. Their findings translate into a more reliable location uncertainty estimation. @iscseism.bsky.social Read now: seismica.library.mcgill.ca/article/view...

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

🌀 Le cyclone #Garance se rapproche de La Réunion. Depuis hier, le bruit sismique sur les stations du réseau de l’OVPF-IPGP augmente en lien avec le renforcement de de la houle. 💻 A distance pendant l'alerte la surveillance du Piton de la Fournaise se poursuit.

Our paper on QSeek is out in Seismica now. QSeek detects earthquakes and locates them precisely by backprojecting deep learning phase probability curves in time and space. And that at a blazingly fast speed! Thanks Marius Isken for this great work!

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

Again: Live "waterfall" DAS-streaming. The unit is now set to record 2 fibers, from Keflavík to Reykjavík (left) and from Kef along the south coast to Þorlákshöfn (right). It is the first time we see what is going on along the fiber north of Svartsengi and Grindavík. Next eruption expected any day!

There was an extended period of more-or-less continuous tremor near Santorini last night. Confirmed by the EMSC on Twitter.

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

Here you go! I picked a few of the burst migration speeds by hand and they are in the range of 2 km/h.

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.

Updated map of seismicity between #Santorin and #Amorgos + Gutenberg-Richter distribution.

Experts interpret the #santorini earthquake swarm to be primarly caused by tectonic processes. One of the attributes to distinguish earthquakes associated with volcanisms from these tectonic processes is the distribution of earthquake magnitudes. (1/6)

A M7.6 earthquake struck SW of George Town, the capital of the Cayman Islands. This offshore quake occurred on a strike-slip fault. In this short news report, Temblor scientists consider which faults have been brought closer to failure. temblor.net/temblor/magn...

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

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

Some of you were waiting for it: Here's our new data visualisation of the earthquakes near #Santorini, provided by our colleague Marius Paul Isken, and located with pyrocko/qseek. It includes yesterday's quakes and starts January 29. Marius included a nice twist, so to speak. Wait for it.

Animation of earthquakes NE of Santorini by GFZ, showing migration towards the NE. The original post also mentions a current preference for an explanation of this activity as having a magmatic origin. 🧪⚒️

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

First earthquake report from the new Geoscope Bluesky account!

This will be the new place where to access the earthquakes information from Geoscope Observatory

Nous venons de faire notre #eXit! Grâce à #HelloQuitX j’ai inscrit 7983 nouveaux passagers pour partir vers #BlueSky & #Mastodon. Retrouvez automatiquement vos communautés le #20Janvier via app.helloquitx.com !

Bienvenue sur le compte officiel de l'Institut de physique du globe de Paris. Vous y trouverez notre actualité scientifique et institutionnelle. Nous vous souhaitons tous nos vœux pour cette année 2025.