Fumihiko Ikegami
@fikgm.bsky.social
500 followers 680 following 280 posts
Earth Science Watcher in Japan. Master of Geology and None. I am myself, not employers.
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I will talk about geology, volcanoes, and GIS.
Shameless selfie of me
Updates from JMA regarding the eruption of Iwojima (Ogasawara Io-to).
www.data.jma.go.jp/vois/data/re...
Thanks. Probably this concides to the seismicity uptick in the island in the recent days...
JMA reported Iwojima (Ogasawara Io-to) is erupting.
Image from Himawari-9 satellite. weather-models.info/latest/himaw...
I think so. The EQ has been studied intensively.
The map was made by the 4 years levelling campaign with >4000 people・days... Crazy stuff.
Today is the National Disaster Prevention Day in Japan, commemorating the 1923 Great Kanto Earthquake which devastated Tokyo and Yokohama.

Here is the ground displacements map after the EQ, which was of course made without GPS or InSAR...
www.gsi.go.jp/kohokocho/ko...
Please, don't do that...
Hey Nano-Banana, please super-resolution and enhance this low-resolution satellite image. Make it like the imagery from the state-of-the-art 10-cm resolution satellite. Strictly keep the composition and viewing angle of the original image. Add immence details to the original blurry image. 😱😱
Automatic Colorization has reached this level now (Qwen Image Edit i2i model). Sakurajima 1914, Bezymiannny, 1956, Quizapu 1932. It is increasingly important to keep the original data.
The strong eruption of #Shinmoedake this morning, from JMA and municipal government cameras. Reddish growing has been observed for the first time this year.
The colors are depending on the sources. Each sources have unique integer numbers and I am so lazy so that I assigned a random color.
How much of the ocean has been mapped? 2025 Edition. (GEBCO 2025 SID + SRTM15Plus v2.7 TID)
I have just learned that there is a temple in Myammer with a floating pumice displayed as the holy object...
www.sukima.com/38_myanmar20...
I need to visit there some day after the peace is back.
チャットンシーボ僧院
(ミャンマーモン州モーラミャイン) 水に浮かぶ軽石がシンボルの僧院。
www.sukima.com
Osarizawa Mine was one of the largest copper mine in Japan. It has been accepting visitors after its closure in 1950's, but no more from 2026. The memories of Japan as World's top mining country is fading away.
After a bit of search about insects repellant for a fieldwork, I found it safe to say Icaridin (EU) / Picaridin (US) is much better than the old DEET.
journals.sagepub.com/doi/full/10....
Was in the field yesterday. Found two cute mountaineers.
Flowing to 3 directions is quite much👀
JMA mascots: Harerun and Volken
#MyNewWallpaper #QGIS #Map
Screenshot of iPhone screen Beautiful map of Izu Bonin Mariana arc
In the villages of vicinity, only few evacuated to the shrine made their lives. The stair of the shrine originally had 50 steps, but now 15 steps. The modern archeological excavation found two bodies at the bottom: an elder woman possibly carried by a young women.
ja.wikipedia.org/wiki/%E9%8E%...
342 years ago OTD OTT, the climax of the 1783 Eruption of Asama Volcano, Japan. The eruptive products of prolonged plinian eruption had collapsed from the northern flank of the volcano, and formed disasterous Kambara pyroclastic flow and debris avalanche.
gbank.gsj.jp/volcano/esdb...
Reportedly Klyuchevskoy Volcano this morning.

Yu.V. Demyanchuk, IViS FEB RAS
From KVERT Telegram.
t.me/ivsfebras_kv...
One of my favorite Cambrian monsters since the childhood😍
UPDATE! My retro Opabinia was too retro so new image to help spread the good word about opabinia feets (well, fleshy leg thingies)! Thanks @jopabinia.bsky.social for the latest in opabinia research! #SciArt #AugArthroAwe
Illustration of Opabinia, a segmented creature with a pair of flat fins per segment, a long proboscis tipped with a fleshy claw thing tipped with spiny things, five large stalked eyes on head, floating in a purple sea, middle Cambrian (505 Mya)
A MASSIVE M3.0 earthquake in New York?? Oh, no. Prayers sent from a plate convergent margin😎