Álvaro González's Avatar

Álvaro González

@thegeonaut.bsky.social

Lecturer of Earth Physics at the University of Barcelona, Spain @cienciesterraub.bsky.social PhD in Geology and researcher on earthquakes, meteorite impacts and other natural hazards. www.geonaut.eu

315 Followers  |  570 Following  |  67 Posts  |  Joined: 19.11.2024
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Posts by Álvaro González (@thegeonaut.bsky.social)

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A 650 km2 Miocene strewnfield of splash-form impact glasses in the Atacama Desert, Chile Glassy ejecta are associated to a limited number of impact craters, and yet hold key information about hypervelocity impact processes. Here we report …

Very interesting!

But there is at least another one in Chile:

www.sciencedirect.com/science/arti...

03.03.2026 19:59 — 👍 0    🔁 0    💬 1    📌 0
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🪨 Màster en Recursos Minerals i Riscos Geològics 
📣 Sessió informativa en línia
5 de març de 2026, 16:00 CET

🔗 Inscripcions obertes! Inscriu-te a la sessió en línia https://f.mtr.cool/cmowrwnnih

26.02.2026 13:02 — 👍 2    🔁 1    💬 0    📌 0
A calm landscape by the Mediterranean Sea, with rocks in the foreground, small irregular waves on a dark blue water, and a golden sunset.

A calm landscape by the Mediterranean Sea, with rocks in the foreground, small irregular waves on a dark blue water, and a golden sunset.

Reflection of the golden sun on small, irregular waves by the sea shore, in a calm sunset.

Reflection of the golden sun on small, irregular waves by the sea shore, in a calm sunset.

Anticyclone afternoon at the Mediterranean shore near Barcelona, Spain.

No clouds, just gold over a velvet of blue.

21.02.2026 17:26 — 👍 3    🔁 1    💬 0    📌 0
A spiral galaxy, seen tilted diagonally. It has a blue-white, glowing spot at its core. Its oval-shaped disc glows faintly blue throughout with light from its many stars. The disc is filled with waves and strands of bright red dust that swirl around the core. At places there are holes torn in the dust, while elsewhere it forms dense clumps that glow orange. Several tiny, distant galaxies appear across the background.

A spiral galaxy, seen tilted diagonally. It has a blue-white, glowing spot at its core. Its oval-shaped disc glows faintly blue throughout with light from its many stars. The disc is filled with waves and strands of bright red dust that swirl around the core. At places there are holes torn in the dust, while elsewhere it forms dense clumps that glow orange. Several tiny, distant galaxies appear across the background.

Picture this: the light captured by Webb in this image has been journeying to us since soon after T-rex 🦖 went extinct.

NGC 5134 is a spiral galaxy located 65 million light-years away  👉 https://www.esa.int/ESA_Multimedia/Images/2026/02/The_stellar_lifecycle_in_a_nearby_spiral
🔭 🧪

20.02.2026 17:04 — 👍 125    🔁 36    💬 1    📌 0
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On 17 February, there was an annular solar eclipse visible only from Antarctica… and from space!

👇ESA’s Proba-2 satellite recorded the same eclipse no less than four times as it whizzed round Earth!

📷Credit: ESA/Royal Observatory of Belgium

20.02.2026 12:40 — 👍 207    🔁 57    💬 6    📌 3

Yes, it does.
It also hosts its own cloud servers, using Nextcloud.

17.02.2026 23:51 — 👍 1    🔁 1    💬 0    📌 0
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Un nuovo postillato di Galileo Galilei - Biblioteca nazionale centrale di Firenze Scoperta in Biblioteca nazionale centrale di Firenze una copia dell'Almagesto postillata da Galileo Galilei

A 1551 print of Ptolemy’s Almagest annotated by Galileo Galilei has been newly discovered in the Biblioteca Nazionale Centrale di Firenze! 🌙🔭🪐 #HistSci

17.02.2026 19:58 — 👍 124    🔁 40    💬 2    📌 5
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📅 Màsters Universitaris | Sessions informatives en línia 

🪨 Recursos Minerals i Riscos Geològics
5/03 - 16:00
🌍 Geosciences for the Energy Transition (GET)
23/03 - 14:00
10/06 - 14:00
💧 Ciència i Gestió Integral de l’Aigua
18/03 - 15:30
26/05 -16:00

🔗 https://f.mtr.cool/zosnvdjevo

12.02.2026 13:10 — 👍 1    🔁 2    💬 0    📌 0
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This is a real timelapse video of the Moon transiting in front of the Earth.

It was captured by the Artemis 1 Orion spacecraft in November 2022 while flying at it's furthest point from the Earth.
The video covers about 3.75 hours of real time. 🔭🧪

11.02.2026 15:43 — 👍 354    🔁 122    💬 4    📌 5
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Did the Viking missions discover life on Mars 50 years ago? These scientists think so The key to solving the mystery of the Viking results is the discovery of perchlorate on the Martian surface in 2008.

For good or ill, a Mars visit is not coming soon, but this article is worth a read anyway
🧪🪐🛰️🔭

journals.sagepub.com/doi/10.1177/...

11.02.2026 04:42 — 👍 20    🔁 3    💬 1    📌 1

España y Portugal sufrieron tres tormentas invernales —Kristin, Leonardo y Marta— a inicios de 2026. En una semana se superaron los 250 mm de lluvia y Sentinel-1 detectó inundaciones en el río Tajo.
🔗 🇪🇸 www.esa.int/Space_in_Mem...

10.02.2026 14:20 — 👍 4    🔁 4    💬 0    📌 0
A satellite‑derived map showing accumulated rainfall over the Iberian Peninsula from 1 to 7 February 2026. Western Portugal and parts of northwestern Spain appear in deep red, indicating more than 250 millimetres of rainfall. Surrounding areas are shown in shades of blue, representing lower rainfall totals. Cities including Lisbon, Vigo, Madrid and Marbella are labelled. A legend at the bottom right displays rainfall values from 0 to over 250 millimetres.

A satellite‑derived map showing accumulated rainfall over the Iberian Peninsula from 1 to 7 February 2026. Western Portugal and parts of northwestern Spain appear in deep red, indicating more than 250 millimetres of rainfall. Surrounding areas are shown in shades of blue, representing lower rainfall totals. Cities including Lisbon, Vigo, Madrid and Marbella are labelled. A legend at the bottom right displays rainfall values from 0 to over 250 millimetres.

A radar‑based comparison image of the Tagus River region in Portugal using Copernicus Sentinel‑1 data from 27 December 2025 and 7 February 2026. Flooded areas are highlighted in bright red, spreading along the river and its tributaries northeast of Lisbon. The surrounding landscape appears in grey‑blue tones. Coastal areas and inland terrain are clearly visible, with a scale bar indicating 10 kilometres and a date label in the lower right corner.

A radar‑based comparison image of the Tagus River region in Portugal using Copernicus Sentinel‑1 data from 27 December 2025 and 7 February 2026. Flooded areas are highlighted in bright red, spreading along the river and its tributaries northeast of Lisbon. The surrounding landscape appears in grey‑blue tones. Coastal areas and inland terrain are clearly visible, with a scale bar indicating 10 kilometres and a date label in the lower right corner.

Three winter storms — Kristin, Leonardo and Marta — soaked the Iberian Peninsula in early 2026.
🌧️ Rainfall maps show areas in Portugal and Spain receiving 250+ mm in a week.
🌊 Copernicus Sentinel‑1 radar reveals major flooding along Portugal’s Tagus River, comparing Feb 2026 to pre‑storm conditions.

10.02.2026 13:11 — 👍 57    🔁 25    💬 2    📌 3
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Grazalema, Spain, received over 2,000 mm (78 inches) of rain in just the last 20 days.

Over a year’s worth of rain — and it’s only early February. This is hydrologically absurd.

09.02.2026 16:11 — 👍 577    🔁 280    💬 18    📌 76
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👋🏽 Jornada de Portes Obertes dels Graus de la Facultat de Ciències de la Terra

🌊Ciències del Mar 
13 de febrer a les 15:00
🌋Grau en Geologia 
13 de febrer a les 16:00

A les 17:00 es realitzarà una visita per les instal·lacions de la facultat.
🔗 Inscripcions obertes https://f.mtr.cool/ngjytpzbjd

09.02.2026 16:21 — 👍 1    🔁 2    💬 0    📌 0

Sitting in a Canadian catastrophe conference, and hearing an eerily familiar refrain from what many of us are saying across the border in the US:

"Earthquake insurance penetration rates for homeowners are shockingly low. When the next 'big one' hits, a huge portion of damage will be uninsured."

03.02.2026 18:33 — 👍 13    🔁 3    💬 0    📌 0
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You may have seen pictures, but have you ever seen video of a gigantic jet #TLE from space?

Astronaut Jeanette Epps captured this incredible sequence on July 20th, 2024 for the DTU/@science.esa.int Thor-Davis experiment. 🧪🔭

youtu.be/xN2J7_rOBJY

Credit: ESA/NASA/J. Epps
Processing: Simeon Schmauß

30.01.2026 21:09 — 👍 539    🔁 221    💬 15    📌 18

In Spain, at that time, there were just two TV channels.

In the main one, at the moment of the accident, the program for kids was being broadcast.

It was interrupted, and the disaster was shown repeatedly in a special news program.

I was 7-year old and I have remembered those images ever since. ✨

28.01.2026 20:29 — 👍 1    🔁 0    💬 0    📌 0

Wow. Already 40 years ago.

Time to return to the Uranus System.

25.01.2026 20:40 — 👍 0    🔁 0    💬 0    📌 0

Reminder: the USGS earthquake locations are not the "official" location for medium to large earthquakes for a *lot* of reasons.

That's the International Seismological Centre's bulletin and comes out about 2 years after an earthquake occurs.

11.01.2026 20:31 — 👍 7    🔁 2    💬 1    📌 0
Poster for the documentary 'Why Dinosaurs?'. Features a father and son looking up at a mounted T. rex skeleton, with the title at the bottom of the picture.

Poster for the documentary 'Why Dinosaurs?'. Features a father and son looking up at a mounted T. rex skeleton, with the title at the bottom of the picture.

HEY! Heard of 'Why Dinosaurs?' It's a great doc. made by a father & son, exploring paleontology and its influence on popular culture. They interview paleontologists, museum workers, film workers, and others with a deep love for dinosaurs. And now it's FREE to watch!

So check it out. Links below.

03.01.2026 17:06 — 👍 125    🔁 54    💬 1    📌 3
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🌟OPEN ACCESS🌟📣PRESS RELEASE📣The Surface Water Ocean Topography or SWOT satellite captured the first high-resolution spaceborne track of a great subduction zone tsunami, according to a new #TSR paper.

Press Release: buff.ly/t8ewm3o

Paper: buff.ly/NOsXcaf

13.12.2025 02:00 — 👍 3    🔁 1    💬 0    📌 0

Nice.

I am not much into trilobites, but this genus looks similar to Paradoxides, right?

09.12.2025 19:47 — 👍 1    🔁 0    💬 0    📌 0
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RIP V3cam 2025–2025 😔

06.12.2025 21:05 — 👍 9    🔁 4    💬 0    📌 2
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Tonight’s full Moon.

04.12.2025 21:32 — 👍 2    🔁 0    💬 0    📌 0
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🚨 NASA scientists warn: critical equipment at Goddard Space Flight Center could be discarded during the shutdown, jeopardizing decades of Earth & space science missions.

📢 Act now: agu.quorum.us/campaign/146...

#sciencepolicy #saveNASA

07.11.2025 00:44 — 👍 97    🔁 91    💬 3    📌 17

A large theropod (probably tyrannosaur) track from Nose Mountain, Alberta shows the fourth digit twisted such that half of the toe was folded underneath the rest.

They ask you how you are and you just have to say that you're fine when you're not really fine. #FossilFriday

03.10.2025 09:32 — 👍 39    🔁 11    💬 1    📌 1
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Ex-Hurricane #Gabrielle spins toward Portugal

27.09.2025 15:17 — 👍 87    🔁 21    💬 2    📌 1

Great!

I will use it in my next freshman Physics lesson.

23.09.2025 08:02 — 👍 2    🔁 0    💬 0    📌 0
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Well hidden in a small corner of the main building of ETH Zurich, they have made a mini museum for Einstein in his former locker 😍

17.09.2025 19:54 — 👍 91    🔁 21    💬 1    📌 2