Geobulletin alpha

Iceland - Fire and Ice and Lots of Sunshine 

After leaving a foggy Svalbard, we headed south towards Iceland. I've been there many times before and have enjoyed the liquid love (rain) more than I care to remember. So it was with great excitement that we entered Icelandic airspace with a view that lasted three days!Annotated map of Iceland showing our route into the Keflavik Airport (red line). This is useful to show locations for the first three photos in this post (red circles with numbers).Iceland's north coast looking east over a [...]

Mauna Loa - Is the Next Eruption Near? 

Mauna Loa in Hawaii is the world largest volcano by volume. Rising from the sea floor to its summit, it is one of the largest mountains in the world as well, from foot to summit, being about 56,000 ft... many times taller than even Mt. Everest! It also happens to be Hawaii's most active volcano, although you wouldn't know it given its recent slumber. It actually erupts more often than Kilauea, last having erupted about the same time that Kilauea started its current [...]

Askja Volcano in Iceland Showing Signs of Warming 

Several articles and local bloggers have started to chatter about changes at Askja volcano in Iceland, a volcano with a powerful and violent past. In 1875, Askja erupted in one of Iceland's largest historical eruptions, producing a small caldera now filled by Öskjuvatn lake. Askja has erupted during the 20th century (1900's) producing fissures and lava flows outside of the Öskjuvatn lake, but has remained mostly dormant in recent decades.The volcano is showing signs of increased [...]

Vulkanische Videos 

Einige Videos über den Hawaiianischen Vulkanismus, die ich im Netz fand und die ich hier nicht vorenthalten möchte. Das erste Video stammt vom Pu'u 'O 'o Krater, einem über 600 m hohen Schweißschlackenkegel. Es zeigt, wie die Lava angetrieben von Gasblasen aus der Erde dringt und dabei zerspratzt. Schließlich speist die Lava einen kleineren Lavastrom. Im zweiten Video sieht man, wie die zerspratzende Lava einen kleinen Schweißschlackenkegel aufbaut. Die noch [...]

Dispatches from the Road: 90 Seconds on a Lava Flow 

I really had no idea what to expect. Pu'u o'o vent on the east rift zone of Kilauea on the Big Island of Hawai'i has been putting out vast amounts of lava for most of the last 27 years, and day to day the location of the flows can change. For months at a time the active flows can remain high on the palis, far from any trailhead, and other times the lava can flow almost entirely through