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Reposted by Claudio Satriano

Jason "Jay" R. Patton @earthjay.bsky.social · Jul 30

#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/...

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Jascha Polet @jascha.bsky.social · Jun 2

Pyroclastic flows at Etna have been confirmed by INGV ⚒️🌋

Vond @vond.it · Jun 2

❗ Violenta eruzione del Monte Etna, una potente esplosione è stata udita distintamente dalla popolazione nelle zone circostanti.

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Simeon Schmauß @stim3on.bsky.social · Jun 1

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

Map of the Lötschtal showing the area affected by the glacier collapse.
Blue colors show lost elevation, red areas elevation gains.
The two most notable areas are the collapsed peak of Kleines Nesthorn and the collapsed glacier which are shown in deep blue with elevation loss of up to 128m and 51m respectively.
The material slid down the mountain in an approximately 400m wide path and accumulated in a 2,5km long area on the valley floor which is up to 32m thick.
The newly formed lake above the village of Blatten is also drawn in.

The Map text reads:
Kleines Nesthorn and Birchgletscher collapse / Blatten im Lötschental (VS)
On Wednesday, May 28th, a2025, the Birchgletscher glacier collapsed under the weight of rock and debris following the partial collapse of the Kleines Nesthorn.
Approximately 10 million cubic meters of debris flowed into the valley, burying large parts of the villages of Blatten and Ried. The debris also blocked the Lonza River, forming a small lake that destroyed several more houses in Blatten.
Analyis
Using Oblique imagery collected and provided by swisstopo on May 30th, 2025, a photogrammetric DEM was created and compared to the swissALTI3D DEM.

The following volume change was measured in the affected area:
Above Volume (m³): 11.2 Mio
Below Volume (m³): 10.1 Mio

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Claudio Satriano @claudio.seismicsource.org · Jun 1

My automated inversion of source spectrum captured the largest one (Mw 3.3), with an interesting peak at 10 Hz at all the recording stations 🤔. More details: ssphex.ipgp.fr/catalog/fr20.... The SspHex website: ssphex.ipgp.fr

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Dr. Lucile Bruhat @seismolucy.bsky.social · Apr 13

"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... ⚒️🧪

A multiple asymmetric bilateral rupture sequence derived from the peculiar tele-seismic P-waves of the 2025 Myanmar earthquake

eartharxiv.org

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Seismica @weareseismica.bsky.social · Apr 2

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...

This work was funded by: European Commission, Horizon Europe project 101058518 Geo-Inquire - European Plate Observing System EPOS - US National Science Foundation CSA Award No. 2310069 - New Zealand Government: Natural Hazards Commission Toka Tū Ake (NHC), GNS Science Te Pū Ao, Toitū Te Whenua Land Information New Zealand (LINZ), the National Emergency Management Agency (NEMA) and the Ministry of Business, Innovation and Employment (MBIE) - Australian National Collaborative Research Infrastructure Strategy (NCRIS)

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Dr. Eric J. Fielding, PhD @ericfielding.mastodon.social.ap.brid.gy · Apr 1

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]

Map of Myanmar area showing sharp color change along the fault running roughly north-south. Red on west side where land moved northward.

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Tom Gabrieli @tgabrieli.bsky.social · Mar 30

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.

Heat map of N-S displacement at Sagaing, Myanmar, before and after the March 2025 earthquake. The right east (right) side was displaced northward by about 2 m while the west side was displaced southward by about 4.5 m, indicating 6.5 m of N-S slip along a rupture that bisects the city.

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Lukas Rentz @lukasrentz.bsky.social · Mar 30

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

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Earthquake information from Geoscope Observatory @geoscope-ipgp.bsky.social · Mar 30

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

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Gilles Mazet-Roux @gmazet.bsky.social · Mar 28

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.

LastQuake @lastquake.emsc.eu · Mar 28

🔎 Regional instrumental seismicity in Myanmar. The colored dots represent the #earthquakes that have struck the region [using @ISCseism catalog -1960 to 2020- and @EMSC data -from 2021 onwards]:

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Lidong Bie @lidongbie.bsky.social · Mar 28

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.

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Earthquake information from Geoscope Observatory @geoscope-ipgp.bsky.social · Mar 28

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

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Bertrand Delouis @bertranddelouis.bsky.social · Mar 28

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

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Bertrand Delouis @bertranddelouis.bsky.social · Mar 25

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...

Sismoazur

sismoazur.oca.eu

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Bertrand Delouis @bertranddelouis.bsky.social · Mar 19

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.

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Earthquake information from Geoscope Observatory @geoscope-ipgp.bsky.social · Mar 21

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

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Reposted by Claudio Satriano

Jason "Jay" R. Patton @earthjay.bsky.social · Mar 11

#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...

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Claudio Satriano @claudio.seismicsource.org · Mar 6

bsky.app/profile/geos...

(Shameless ad for our Geoscope earthquake service 😉)

Earthquake information from Geoscope Observatory @geoscope-ipgp.bsky.social · Mar 6

Mw=6.0, NORTHERN CHILE (Depth: 99 km), 2025/03/06 16:21:37 UTC - Full details here: http://geoscope.ipgp.fr/scripts/seismes/fiche.php?seis=us6000px89

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Observatoire volcanologique du Piton de la Fournaise @ovpf.bsky.social · Mar 6

🌀 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.

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Anthony Lomax @alomaxnet.bsky.social · Mar 4

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

Seismica @weareseismica.bsky.social · Mar 3

@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...

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Reposted by Claudio Satriano

Seismica @weareseismica.bsky.social · Mar 3

@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...

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Observatoire volcanologique du Piton de la Fournaise @ovpf.bsky.social · Mar 3

🌀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.

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Observatoire volcanologique et sismologique de Martinique @ovsm.bsky.social · Mar 3

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

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Bertrand Delouis @bertranddelouis.bsky.social · Mar 3

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