Gilles Mazet-Roux

He definitely drove home for Christmas ...

a. Seismogram from one of the seismic sensors (largest signal is an earthquake). b. Residual spectrogram (difference between the spectrogram and the amplitude spectrum (red line at left). Curves overlain with dashed lines are the aircraft signal. The broad/smeared signal at lower frequencies is from an earthquake. c. Aircraft that made the signal, a Cessna 185. d. Flight pattern for the aircraft (blue) and locations of seismic sensors (red). Cross section of the residual spectrum along dashed line in b, large signal near beginning is from an earthquake.

Cool study that uses acoustic signals recorded at seismic sensors to identify aircraft type flying overhead (different aircraft have different frequency signatures). Alaska provides a lot of aircraft variety to evaluate. ⚒️🧪🚁

pubs.geoscienceworld.org/ssa/tsr/arti...

[Séisme ressenti]
Un séisme a été enregistré le lundi 27 octobre 2025 à 08:38 heure locale.
➡️ magnitude 6.6 ± 0.3
➡️ localisé à 168km à l'Est de la Désirade
➡️ type Tectonique
👉Si vous l'avez ressenti, merci de nous aider en témoignant sur www.franceseisme.fr

#Kamtchatka earthquakes sequences update. The activity remains concentrated to the north of the rupture zone.

I'm glad to see that good old GMT is still considered trendy software 👍 Often copied, never equaled

#Kamtchatka earthquake. More than 600 #aftershocks recorded in 6 days (data: @lastquake.emsc.eu )

Really American

Democracy in Danger: In a shocking moment, Stacey Abrams lays out in terrifying detail the methodical ten step process by which our democracy is being dismantled, and we might be at step nine already.😲🤬

Everyone needs to see this.

48 hours hours after the #tsunami hit the Marquises Islands in French Polynesia, the waters in Nuku Hiva harbour are still agitated. (Source data.shom.fr)

Thanks to the authority in NZ, we have English version of the picture!
www.geonet.org.nz/news/7KdKuPl...

However, the seismic crisis in the region started nine days earlier with a magnitude 7.4 earthquake and approximately 220 aftershocks in a few days and concentrated in the northern part of the 8.8 magnitude rupture zone.

The magnitude 8.8 earthquake that struck #Kamtchatka on 29 July produced approximately 230 #aftershocks of magnitude 4 and above within 30 hours, which were distributed over an area measuring approximately 350 x 80 km.

(Earthquake data: @lastquake.emsc.eu )

Tsunami visible sur le marégraphe de Nuku Hiva d'après les données temps réel du SHOM
services.data.shom.fr/maregraphie/...

The M8.7 aftershocks are distributed on a ~ 350-km long x 100 km wide area.
But actually the seismic crisis bagan on July 20 in #Kamtchatka. The foreshock sequence was concentrated on the north-east end of the rupture.
#Tsunami

X post by @nobushiromasaki. JP text: カムチャッカ半島付近の大地震（M8.0）による津波、日本各地にも1m程度の津波が来るという注意報が出てる。侮らないで。1mは、ふつうに自動車が流されるレベルです。画像は拾い物だけど、これが本当だから。沿岸地域の方、特に気をつけて！

On X, Masaki Nobushiro posts a recurring (and useful) drawing about how people wrongly think a 1m tsunami is a cresting wave when it's actually a wall of water filled with dangerous and deadly debris that's strong enough to sweep up a car.

#tsunami

Magnitude 8.7 #earthquake in Kamchatka, following a M7.4 last week - may be largest earthquake since 2011, 8th largest on record globally, #tsunami warning in place for US west coast and Canada - the historic 1952 M9 closely caused a destructive tsunami across the Pacific

14 August 1846 12:00 UT
Mw6.0 earthquake almost destroyed Orciano Pisano, near Livorno (Tuscany, Northern Italy), killing 60 people. Felt as far as Milan. Four months of aftershocks.
emidius.mi.ingv.it/ASMI/event/1...
imuseum.im
e-newspaperarchives.ch
Largest known EQ in that area...

Will this be the last Keeling curve upate from NOAA for CO2 at Mauna Loa?

June 2025: 429.61 ppm

This may be a tragic moment:

Critical Hurricane Forecast Tool Abruptly Terminated U.S. Department of Defense announced Tuesday it would no longer process and deliver data essential to most hurricane forecasts

A huge blow was dealt to hurricane forecasters this week as a critical tool was abruptly terminated by the Department of Defense and NOAA. The immediate discontinuation of data from three weather satellites will severely impact hurricane forecasts this season and beyond. More ⬇️

Finally, the seismic signal at ANGG station in #Greenland confirms the seismic origin of this event with nice P and S seismic waves and an aftershock 5 minutes later.

However, there has been few earthquakes in this area in the past so let's see...

This morning @lastquake.bsky.social reports a magnitude 4.5 earthquake on the SE coast of #Greenland.
www.emsc-csem.org/Earthquake_i...
This is probably not an earthquake, but rather a huge landslide in a fjord caused by thawing #permafrost. To be confirmed ...

#Greenland melting 19.06.2025

We are going parabolic

Finally some #Climate action in the #cryosphere

But the NEWS OF THE DAY is not this.
You will need to wait 2 hours to find out

#ClimateCrisis #cryosphere

It seems My Etna is active this morning.

This is an 8x Timelapse of the moment of eruption

Finally some precise numbers for the Blatten deposit! 👇
11 Mio m3 and up to 32 m thick ! 😱

FACTSHEET about Birch Glacier collapse by glaciologists of ETHZ @vaw-glaciology.bsky.social 🧊❄️

Don't miss that read! 🙏

polybox.ethz.ch/index.php/s/...

📷 Pomona

Swiss village almost entirely destroyed after collapse of glacier buries it in mud One person missing and Blatten devastated after huge cloud of ice and rubble inundates evacuated town

My friend is in charge of the team that wrote the climate change adaptation plan for Switzerland and this is one of the things they expected.

Helicopter view published by Pomona Media (🔗 below) shows the lake building up by the end of the day. 5 m3/s is a lot of water.
youtu.be/R0YlCNDW2l4?...

Upstream and downstream view of the deposit! 🧊🌊

Massive... 😱😱😱

www.letemps.ch/suisse/valai...

The river level has already started to rise behind the dam in Blatten! 🌊

A lake is underway... 😨

To 'mitigate' flooding hazard in the valley, the Ferden dam lake, located 6 km downstream has been emptied.

📷 SRF