Discover and read the best of Twitter Threads about #eruptions
Most recents (3)
Our new paper: »The sun was darkened for 17 days« (AD 797). An Interdisciplinary Exploration of Celestial Phenomena between #Byzantium, #Charlemagne, and a #VolcanicEruption. #MedievalWorlds 17/2022: doi.org/10.1553/mediev… (1/9)
#Byzanzforschung, @imafo_oeaw
#Byzanzforschung, @imafo_oeaw
The blinding of the #Byzantine Emperor Constantine VI in #Constantinople in August 797 CE and his overthrow by his mother Eirene was used as legitimation for the #coronation of the Frankish King #Charlemagne as emperor of the Romans on 25 December, 800. (2/9)
@imafo_oeaw
@imafo_oeaw
In #Byzantine sources, Constantine VI´s #blinding was linked with a spectacular #celestialmanifestation of divine disapproval: “The #sun was darkened for seventeen days and did not emit its rays so that ships lost course and drifted about.” (3/9)
#Byzanzforschung
#Byzanzforschung
An #eruption of #Nyiragongo #volcano (#DRC) began in the evening of May 22. #Meteosat satellite data (from @CIRA_CSU) show a strong thermal anomaly appearing at 17:15 UTC, and a small #volcanic plume amidst widespread regional convection. Follow @CharlesBalagizi for updates.
If you're looking for background info on #Nyiragongo and its previous flank #eruptions in 1977 and 2002, there's a collection of papers in the Italian Acta Vulcanologica journal available here (with free PDFs):
libraweb.net/articoli.php?c…
libraweb.net/articoli.php?c…
#Sentinel5P #Tropomi data on May 23 show SO₂ emissions from the #Nyiragongo #eruption. SO₂ to the SE over #Tanzania is at higher altitude (perhaps to tropopause level) and was emitted during the initial, more energetic phase of the eruption (17:00 UTC, May 22). @VirungaSupersit
Based on the latest satellite data there are signs of #magma buildup. Over 30cm of rising is the highest seen so far in the area. This has caused scientists to add a potential scenario of a volcanic #eruption in the area west of Keilir mountain in #Reykjanes peninsula. #icemagma
This magma buildup is the likely cause of the #earthquake swarm over the past few days. Most likely location if #magma does reach the surface is behind Keilir and #lava would most likely flow only to uninhabited areas.
Potential #eruptions in the #Reykjanes peninsula are not explosive eruptions but rather basic lava eruptions - similar to the #Holuhraun eruption in 2014. The area is known for eruption periods, lasting 1-200 years, and calm periods lasting like this one for 800 years.
