Source: instagram.com
This is pretty magnificent - just about 2 years after flow stopped on the Lower East Rift Zone of Kilauea, walking across tephra and lava layers out to the Fissure 8 mound, pulling out an infrared thermometer, and checking the temperature of the gas vents still on the site. That's heat originally delivered during the eruption, still slowly leaking its way out. Make sure you watch the end where he gets a view from the summit of fissure 8, into its heart, down the other cones left by the various fissures, and out to the ocean.
earthstory reblogged
mount esan, hokkaido, japan
on the way to the top
en route vers le sommet
A drone tour over the many steaming craters of Mt. Etna, Sicily - one of the most active volcanoes on Earth.
Original caption:
"In June 2019, I went on an epic two-week journey across Iceland, a place that had been on top of my bucket list for a long time. I could never expected how life-changing it would be, intensifying my connection to nature.
One thing that struck me while exploring this geological paradise was the feeling of freedom beyond compare. Before such vast landscapes and with nothing obstructing your sight, the world opens up to you; a playground where everything is accessible and majestic. Travelling a little off-season and relying on a great hiking guide, I was able to wander this mystical place mostly solo.
With its ever-changing scenery, Iceland really is the cheapest ticket to another planet."
Source: instagram.com
earthstory reblogged
Stefanos Crater
is the most prominent hydrothermal crater on Nisyros with lots of active fumaroles.
earthstory reblogged
Volcanic landscape in Nisyros, Greece. The island has a 3-to-4-kilometre (1.9 to 2.5 mi) wide caldera, named Stefanos, and was formed within the past 150,000 years, with three separate eruptive stages. The volcano is currently active (but not erupting), and fumaroles are found at the craters.
stepoutandexplore
Here's a sneak peek from our Great Hitchhiking Adventure in Iceland 🇮🇸! For full video (sound included) 😉😋, check out our blog - link in bio.
Iceland travel clip including mud volcano, fumarole/former mud volcano, multi-tiered waterfall and rapids, flowers, and view over the sea cliff towards the Atlantic.
Source: instagram.com
Mount Agung on the island of Bali is still active and just had eruptions in late April, but these folks made it to the summit, so here’s the just-erupted volcano. The caption does warn of safety.
sang_petual4ng
24 april 2019
Kondisi terbaru di gunung agung pasca letusan stromboli minggu.
Adegan ini tidak untuk di tiru..
Ingat keselamatan.
Source: instagram.com
Source: instagram.com
earthstory reblogged
Steaming Fumarole at Krafla geothermal area in Iceland. A fumarole is an opening in the earth crust which emits steam and gases.
Source: instagram.com
Sulphurous emanations
When we gaze upon the perfect cone of a smoking mountain, we are only seeing the tip of the iceberg, though some of its surface features may reveal something about the 90% of the magmatic system lying below. A lava chamber lies below, cooling and giving off heat and gradually degassing a mixture of water, carbon dioxide and sulphur dioxide, waiting as the pressure builds up or new hot lava approaches from below to trigger an eruption.
The photo shows a solfatara, a fumarole that is discharging sulphur rich hot gas, evidenced by the bright yellow crystals and surrounding orange crust. I'm not sure what the white material is, but it could be silica sinter, another common exudation of hot volcanic waters. These gaseous emanations play an important role in the process of volcano monitoring, being able to reveal by changes in their composition some idea of what is happening below. When an edifice starts pumping out alot more sulphur dioxide than usual, it is a signal that fresh lava has arrived in the chamber and is degassing. As it rises, so the ratios of different gases change, allowing vulcanologists to track, however vaguely, developments deep below.
In combination with seismic patterns, records of ground deformation (as the edifice swells as the magma rises towards the vent) and other data, researchers can now forecast with some degree of accuracy when a smoker is about to blow. This allows civil authorities to prepare during the early phases of the process when the gas ratios first change for the evacuations that may be needed later on. Routine monitoring using spectrometers, sometimes from the geologist's car window is now a vital element in volcano forecasting worldwide.
Loz
Image credit: Banco de Imagenes Geologicas
Source: facebook.com