Volcanoes & Earthquakes - new app for Android
Guaranteed tours
8-16 mag 2021: From Stromboli to Etna - Eolian Islands + Etna volcano
: spazi disponibili / : garantita / : pochi spazi a sinistra / : Prenotato fuori
 
News
lun, 2 nov 2015, 06:58
Seismic activity at Colo Una Una volcano during the past months
A recent period of volcanic unrest seems to be over. Seismic activity has decreased and VSI lowered its alert level back to green (normal) last week. ... leggere tutti
 

Una Una vulcano

stratovulcano 507 m / 1,663 ft
Nord Sulawesi, Indonesia, -0.17°S / 121.61°E
Stato attuale: normal or dormant (1 di 5)
Last update: 27 Feb 2020

Una Una (also known as Colo) is an isolated volcano in the Gulf of Tomni, offshore central Sulawesi. It is the site of sulfur extraction.

Stile eruttivo tipico: Esplosivo
Eruzioni del vulcano Una Una: 1983, 1938, 1898-1900 (?)

Ultimi terremoti nelle vicinanze

Non terremoti recenti
Data / oraMag. / ProfonditàDistanzaUbicazione

Sfondo

Una Una volcano is a broad, low volcano containing a 2-km-wide caldera with a small central cone. Only 3 eruptions are known in historic time, but 2 of them caused extensive damage over much of the island. The last eruption of Una Una was in 1983 and produced pyroclastic flows that swept over most of the island shortly after all residents had been evacuated.

Una Una Photos

island colours - full moon over ice laguna (Photo: Tom222)
island colours - full moon over ice laguna (Photo: Tom222)
To get to the rim of Marum, we first have to circle it and descend a bit again, following a ridge in a moon-like landscape of ash, erosion gullies and (fortunately not recent) volcanic blocks and bombs.  (Photo: Tom Pfeiffer)
To get to the rim of Marum, we first have to circle it and descend a bit again, following a ridge in a moon-like landscape of ash, erosion gullies and (fortunately not re...
An impressive steam plume is rising from Kamokuna sea entry at Kilauea volcano, Hawai'i.
The lava erupts to the surface at the volcano's eastern rift zone at the Pu'u O'o vent and flows for many miles through an underground lava tube until it reaches the coast. 
The lava entry shown here has been going on since July 2016 and has been enlarging the Island of Hawai'i by building a fragile delta of new land. (Photo: Tom Pfeiffer)
An impressive steam plume is rising from Kamokuna sea entry at Kilauea volcano, Hawai'i.
The lava erupts to the surface at the volcano's eastern rift zone at the Pu...
Mauna Kea volcano, partly in clouds, Big Island, Hawaii (Photo: Janka)
Mauna Kea volcano, partly in clouds, Big Island, Hawaii (Photo: Janka)
 


Latest satellite images


See also: Sentinel hub | Landsat 8
 

Piu su VolcanoDiscovery

 
Why is there advertising on this site?
Copyrights: VolcanoDiscovery e da altre fonti come indicato.
Uso di materiale: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.