Jascha Polet

Thanks! I still consider Los Angeles my home town.

Screenshot of current eruptive episode at Kilauea webcam

30th eruptive episode has started at Kilauea: www.youtube.com/live/fiyttmA... 🌋⚒️

Map of past seismicity with events from last week outlined in blue.

Update on the #Rialto #earthquake sequence in California. Based on the alignment of the events, it now appears that they are occurring on a right lateral strike slip fault aligned with the San Jacinto Fault System. Two other little current sequences: near Lytle Creek to the North & Ontario South.🧪⚒️

Arm waving on my part, but it would be interesting to know how many eruptions had magma involved and how many may have been steam-driven. Lots of hydrothermal systems perturbed thanks to the earthquake.

Did Stella Barra close as well?? Oh no…

Is the cinerama dome still closed? I loved the Arclight Hollywood so much..

Video is almost certainly real. From colleagues in Russia:

Seriously?
Seriously??

GCMTs of aftershocks plotted on centroid locations with grey outlines and larger symbols. Smaller aftershocks plotted as pink circles. Foreshock sequence in purple. Background seismicity from many different catalogs. Map generated using GMT software by Jascha Polet.

A quick map of the #aftershocks of the M8.8 #Kamchatka #earthquake. Aftershocks within the plate (outer rise and deeper intraplate) appear to occur mostly near the large slip patch of the mainshock. More numerous small aftershocks near the epicenter of the mainshock (where the rupture started). ⚒️🧪

Doesn’t quite have the same vibes either..

Oh no, not geology puns! 😆

Beautiful landscape near San Bernardino pass in Switzerland ⚒️🇨🇭

YouTube video by NOAAPMEL Kamchatka Tsunami, July 29, 2025 tsunami propagation

Here is @noaa.gov's model of the tsunami propagation from the people at PMEL, initiated with the earthquake location and then calibrated by the DART buoy observations. There is a wealth of great information at their website (link in thread). (1/6) ⚒️ www.youtube.com/watch?v=oOtJ...

Japanese GSI published the InSAR result of ALOS-2. It may be helpful for the interpretation.
www.gsi.go.jp/cais/topic20...

That’s the Salton Sea for you! 🤣

Students posing with sign and banana outside of the international banana museum

A stop on my Salton Sea/southern San Andreas geology field trips: the international banana museum

Seismicity map of area near Fontana and Rialto.

Today’s M4.3 strike slip #earthquake near #Rialto CA is part of a little sequence of events in the last few days that appears to match up with the NE striking, left lateral, Fontana trend. This area is relatively active, with a M4.2 earthquake last year. 🧪⚒️

Map of seismicity with pink circles aftershocks of the M8.8 and the purple circles after shocks of the M7.4 foreshock

Aftershocks from the M8.8 Kamchatka #earthquake will likely continue for years. This sequence now also includes tensional events in the outer rise area, where the subducting slab bends to dive into the mantle. 🧪⚒️

Crescent city river gauge record

Just to illustrate how long waves from a #tsunami can keep going, this is a tide gauge record from Crescent City CA (known for its sensitivity to tsunami waves due to bathymetric and resonance effects) showing significant wave activity still continues 24+ hours after their first arrival. 🧪⚒️

A volcano made out of mashed potatoes with asparagus and broccoli trees mingled around Dino nuggets and a hot dog shaped like a person.

Mashed potato volcano with gravy flowing down the side

Containers full of mashed potatoes in a freezer

Screenshot of texts: this is genuinely impressive and insane. Would love for you to talk to me about what’s going on with the hotdog. Reply reads: that’s hot dog man. He’s a disaster tourist.

My brother did not ask me to do this, nor did he know I was going to, but I made him a mashed potato volcano for his birthday.

The number of potatoes this required was shocking but otherwise it was relatively simple to do. A side effect is a freezer full of leftover mashed potatoes.

🌟FREE TO READ #KAMCHATKA #EARTHQUAKE PAPERS🌟As a service to researchers working on the 2025 M8.8 Kamchatka earthquake, we have curated a list of papers related to the region, free until until 22 August www.seismosoc.org/news/free-to... ⚒️🧪

blue sky earthquake list!

I’m guessing Hiroo is on it right now 🙂

More fascinating ways the M8.8 Kamchatka earthquake has been recorded! Did you know that even earthquakes thousands of miles away can cause changes in groundwater levels?

www.usgs.gov/mission-area...

Modelling results for the #Kamchatka tsunami from July 30, 2025. Pacific ocean in dark blue, red and yellow colors show the wave heights. In grey, the land masses of Eurasia (upper left), Australia (lower left) and the Americas (right).

Fresh from the press, so to speak, a result of our #tsunami model based on the specifics of this earthquake (we will update it one we have more model runs). The color code is wave height in metres. The dotted line in the centre of the picture is the Hawaiian island chain.

Yes, bathymetric and resonance effects definitely make Crescent City a special place for tsunami!

Depends a bit on the topic and region. The state geological surveys are usually a source of good information. There are databases of geological images as well as map servers for geology, tectonics and oceans.

I always liked to incorporate current events in my classes, hopefully your professor will do the same!

Figure from Macinnes et al. conpared to map of today’s Kamchatka earthquake by Jascha Polet.

Another quick comparison of the 1952 #Kamchatka #earthquake from MacInnes et al. (2010) with today’s M8.8 event. The aftershock areas are similar, as well as one region of foreshocks. The updated USGS rupture model has a max slip of 10m versus 12m for 1952, with SW rupture direction. 🧪⚒️

The story I would tell if I were a journalist is: It is federal investment in research, hazard monitoring, warning systems, public education, public media, and emergency management that has made the response of the past several hours possible. All of that is being put at risk by the Trump admin.