Robin Lacassin @RobinLacassin@qoto.org

Correction: as @culturevolcan pointed out, this is NOT the northeastern rift zone, but the southwestern volcano flank.

Citing: "This picture shows in fact a portion of the initial eruptive fracture cutting the upper South-West flank. Mostly gaz release a a few short lava flows there berfore the magma was drained by the North-East Rift Zone"

Looking carefully to the background you may see the South Pit and two small rounded volcanoes that are located SW of the main caldera.

Another excellent view of the #MaunaLoa upper northeastern rift zone with the active erupting fissure in the foreground. The summit caldera is in the back.

Reminder, USGS public domain aerial images are here: https://www.usgs.gov/observatories/hvo/news/photo-and-video-chronology-hawaiian-volcano-observatory-november-28-2022

Beautiful aerial views of the #MaunaLoa eruption by the #USGS Hawaiian #Volcano Observatory are here: https://www.usgs.gov/observatories/hvo/news/photo-and-video-chronology-hawaiian-volcano-observatory-november-28-2022. These USGS images are public domain.

On this image 👇🏼 , the erupting fissure with lava fountains is visible to the upper left. From the fissure reddish lava flows downslope.

https://twitter.com/USGSVolcanoes/status/1597431362382102528?s=20&t=Iz7DoAXDPJ0uTQ-9MUUR_Q

https://twitter.com/USGSVolcanoes/status/1597378480441884679?s=20&t=Iz7DoAXDPJ0uTQ-9MUUR_Q

Interesting National Geographic article by Robin George Andrews: "Hawaii’s #MaunaLoa erupts for the first time in 38 years. What happens next? For now, the #eruption does not threaten any populated areas, but scientists continue to closely monitor the largest active #volcano in the world."

https://www.nationalgeographic.com/science/article/hawaii-mauna-loa-erupts-largest-active-volcano-reawakens

It's dawn on the Mauna Loa #volcano summit. The USGS webcam captured daylight rising over the caldera filled by the new lava lake. Amazing view.

Updated news on the unrest: https://www.usgs.gov/volcanoes/mauna-loa/volcano-updates

Webcam on the rim of Mauna Loa summit caldera shows the lava lake that started filling up few hours ago. Last #eruption at Mauna Loa was in 1984.

#USGS Mauna Loa #volcano webcams: https://www.usgs.gov/volcanoes/mauna-loa/webcams

Updated news on the unrest: https://www.usgs.gov/volcanoes/mauna-loa/volcano-updates

More info on Mauna Loa (USGS webdoc with many maps): https://geonarrative.usgs.gov/maunaloa/

RT USGS:

https://twitter.com/USGSVolcanoes/status/1597166066496851968?s=20&t=CxhvzVTm-kPGSZMPPoCGnA

AND

https://twitter.com/USGSVolcanoes/status/1597167390739267584?s=20&t=CxhvzVTm-kPGSZMPPoCGnA

After shelling of energetic infrastructures by Russia #Ukraine appears so dark on the nighttime satellite images. It looks like a desert area, but it is not.

People there are struggling with winter temperatures and war news.

Imagery from: https://worldview.earthdata.nasa.gov/?v=-15.138500618814131,28.210403664185364,58.70256690613667,68.56720823870361&l=Reference_Labels_15m(hidden),Reference_Features_15m,Coastlines_15m,VIIRS_SNPP_DayNightBand_At_Sensor_Radiance,VIIRS_SNPP_DayNightBand_AtSensor_M15(hidden),VIIRS_SNPP_CorrectedReflectance_TrueColor(hidden)&lg=true&t=2022-11-23-T22%3A52%3A20Z

I just learned that I'm working on material science 👇🏼
Our mailboxes are full of such toxic messages - waste of energy. Here a predatory company located in the USA (NJ). How to regulate this ?

Just received the big #climate book coordinated by Greta Thunberg @gretathunberg
Hours of interesting but frightening reading to come. Thanks in advance to all the authors.

In 1999 the North Anatolian Fault (NAF), Turkey, broke during two destructive #earthquakes east of Istanbul (Mw7.4 Izmit and Mw7.2 Düzce earthquakes respectively on 17 Aug and 12 Nov).

Today's Mw6.1 #earthquake happened just east of Düzce with a faulting mechanism very similar to the 12 Nov 1999 event (strike-slip with small normal component). Its epicenter is located little to the north of the main NAF fault trace.

Map with MT and source function from #IPGP #Geoscope http://geoscope.ipgp.fr/index.php/fr/catalogue/description-d-un-seisme?seis=us7000irp8

Other map shows in red the fault broken by the two 1999 events (purple and red stars locate epicenters, yellow circles show aftershocks). From C ̧akir et al. GJI 2003 https://doi.org/10.1046/j.1365-246X.2003.02001.x.