Alex Peace

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Part 1 - from Continent to Ocean: meetingorganizer.copernicus.org/EGU25/sessio...
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@eurogeosciences.bsky.social

Pretty clear signal on my Raspishake seismometer which is about 8600 km away in Herne, Germany. The seismometer just sits on Top of my kitchen. ⚒️

Earthquake diagrams. Map of wavepath from source to receiver, seismogram of vertical component of ground motion velocity and spectrogram showing frequency content against time. 19:57:08UTC 2024/12/08 M6.3 Andreanof Islands earthquake

P-wave from today’s (19:57:08UTC 2024/12/08) M6.3 Andreanof Islands earthquake recorded on my Raspberry Shake seismometer in Newcastle-under-Lyme, England ⚒️🧪

Map of Alaska from the Alaska earthquake center. Earthquakes are shown as different colored and different size dots. Recent earthquakes are in red and higher magnitudes have larger dots.

Lots of earthquake activity in Alaska today (SW of Adak) with five earthquakes above M5 since 11 am local time.

How common are earthquakes in Alaska? 1/ 🧪⚒️

drupal10-175571281.us-west-2.elb.amazonaws.com

A M6.3 and M6.1 #earthquake occurred last night at 2024-12-09 00:15:31 and 00:38:53 (UTC) at the Aleutian Trench (the trench that connects Alaska, USA to Kamchatka, Russia).

Both earthquakes can be seen in the middle waveform and form part of a larger earthquake swarm happening in the region.

And another in the same area of the #AleutianIslands #Alaska

Caught a few #earthquakes from #Alaska on the #RaspberryShake today.

M 7.0 #earthquake 63 km WNW of Petrolia, CA as displayed on my Raspberry Shake in #Edinburgh. USGS details: earthquake.usgs.gov/earthquakes/... Hope all are safe.

Three panel data screen from my raspberry shake, showing on the left large panel, a map of California and the coast with the epicenter when a red dot and a line to my recorder in the central Valley shown being 312 miles away from the epicenter. On the right hand side is a wave form seismogram, showing distinct onset of squiggles and on the bottom is a frequency, spectrograph plot, showing a very high increase in intensity when the earthquake rolled through

Here’s the filtered seismogram from my Raspberry Shake. I’ve had running 24/7 for 7(?) years now. Its awesome.
shop.raspberryshake.org

map of raspberry shake locations in the UK

seidmogram

seismogram

The UK now has more citizen science raspberryshake seismic stations than professional ones. Some detect surprisingly good signals from 8000km away, even with sub-optimal sites tgey see big events. R94C3 is in my garden office (aka the shed) and detected P waves from todays California earthquake ⚒️

Seismicity map with a bunch of thrown together earthquake catalogs. It should go further west but I didn’t want to download a new bathymetry file…

I quickly put together a seismicity map for yesterday’s M7.0 earthquake and its aftershock sequence (purple outlines), which gets very close to the coastline. This transform also represents an impressive bathymetric feature. 🧪⚒️

The M7 #Earthquake in #California as recorded on the #RaspberryShake in #Hamilton #Ontario

M3.4 in southern Quebec recorded on the #RaspberryShake.

🚀 This was my first foray into planetary science—an exciting challenge and hopefully the start of something new! Thank you to my wonderful co-authors
Meixia Geng, Qingjie Yang, Chaouki Kasmi, & Kim Welford, who made this work possible! 🚀

🌔 In this study, we present new 3D models based on GRAIL gravity data, revealing a vast network of magmatic structures beneath Oceanus Procellarum. These findings provide fresh insights into the Moon's magmatic evolution and the critical role of lateral magma transport pathways. 🌔

Unveiling magmatic structures and connectivity beneath the lunar Oceanus Procellarum region from GRAIL gravity data - Nature Communications The Marius Hills, located in central Oceanus Procellarum, form the largest volcanic dome complex on the Moon. Here, gravity data is used to image the magmatic structures in this region. Magmatic condu...

🌖 I'm excited to share our latest work published #openaccess today in @natureportfolio.bsky.social Communications: "Unveiling magmatic structures and connectivity beneath the lunar Oceanus Procellarum region from GRAIL gravity data." 🌖
www.nature.com/articles/s41...

@mcmasteruniversity.bsky.social looking spectacular on this late November day! Hope the end of the semester is treating you all well!

Congratulations to my MSc student Abby Clark on graduating today with an MSc in Earth and Environmental Sciences from McMaster University!

Map showing the location of the November 20, 1933 M7.3 earthquake offshore Baffin Island. Also shown is the ongoing seismicity of the region.

Nov. 20, 1933: A M7.3 earthquake struck offshore Baffin Island, #Canada. This is the largest known #earthquake along the passive margin (east/north coasts) of #NorthAmerica and north of the Arctic Circle.
More:
seismescanada.rncan.gc.ca/historic-his...
seismescanada.rncan.gc.ca/historic-his...
⚒️🧪

Students standing on rock outcrop

Here is what a 1.2 billion year time gap looks. Student on right on 2.4Ga Lewisian gneiss, student on left on 1.2Ga Torridonian breccia. Clachtoll, Scotland on @durhamearthsci.bsky.social field trip few weeks ago. #geology #unconformity #petrology #fieldtrip #rocks #rock

Lovely little thrust fault in the field today 👌

#structuralgeology #fieldwork

Starting off on #BlueSky by sharing a recent recording from our #RaspberryShake of the M6.8 #Earthquake in #Cuba.