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Gilles Mazet-Roux @gmazet.bsky.social · 23d

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

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Gilles Mazet-Roux @gmazet.bsky.social · Aug 7

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

EarthScope Consortium @earthscope.org · Aug 7

Registration is now open for the 2025 Introduction to the Generic Mapping Tools (GMT) for Geophysics short course! This self-paced, asynchronous course introducing learners to modern GMT is available to complete between September 2–25, 2025.

Register by August 28 ➡️ https://loom.ly/hcbJrIQ

Promotional graphic for a 2025 short course titled "Introduction to the Generic Mapping Tools (GMT) for Geophysics." The course is asynchronous and runs from September 2 to 25, 2025. The background features a topographic map of the Atlantic Ocean and surrounding continents with a red-to-purple gradient overlay. Logos for NSF, NASA, USGS, GAGE, SAGE, and EarthScope Consortium appear at the bottom.

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Gilles Mazet-Roux @gmazet.bsky.social · Aug 5

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

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Reposted by Gilles Mazet-Roux

Paul Eric Scannell @pauleric70.bsky.social · Jul 9

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.

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Gilles Mazet-Roux @gmazet.bsky.social · Aug 1

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)

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Reposted by Gilles Mazet-Roux

Fumihiko Ikegami @fikgm.bsky.social · Aug 1

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

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Gilles Mazet-Roux @gmazet.bsky.social · Jul 31

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.

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Gilles Mazet-Roux @gmazet.bsky.social · Jul 31

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 )

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Reposted by Gilles Mazet-Roux

Gaétan Heymes @gaetanheymes.bsky.social · Jul 30

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

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Gilles Mazet-Roux @gmazet.bsky.social · Jul 30

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

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Reposted by Gilles Mazet-Roux

Unseen Japan @unseenjapan.com · Jul 30

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

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！

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Reposted by Gilles Mazet-Roux

Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · Jul 30

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

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José R. Ribeiro @joserodribeiro.bsky.social · Aug 14

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...

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Reposted by Gilles Mazet-Roux

Prof. Eliot Jacobson @climatecasino.net · Jul 15

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:

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Reposted by Gilles Mazet-Roux

Michael Lowry @michaelrlowry.bsky.social · Jun 26

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 ⬇️

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

michaelrlowry.substack.com

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Gilles Mazet-Roux @gmazet.bsky.social · Jun 21

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.

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Gilles Mazet-Roux @gmazet.bsky.social · Jun 21

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

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Gilles Mazet-Roux @gmazet.bsky.social · Jun 21

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 ...

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Reposted by Gilles Mazet-Roux

Christopher Cartwright @chriscartwright.bsky.social · Jun 20

#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

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Reposted by Gilles Mazet-Roux

Chris Becke (aka BeckePhysics) @chrisbecke.bsky.social · Jun 2

It seems My Etna is active this morning.

This is an 8x Timelapse of the moment of eruption

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Reposted by Gilles Mazet-Roux

Melaine Le Roy @subfossilguy.bsky.social · Jun 1

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

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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Reposted by Gilles Mazet-Roux

Melaine Le Roy @subfossilguy.bsky.social · May 29

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

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Reposted by Gilles Mazet-Roux

David Ho @davidho.bsky.social · May 29

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.

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

www.theguardian.com

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Luca Malatesta @geoluca.bsky.social · May 28

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?...

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