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The Earth Story

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This is the blog homepage of the Facebook group "The Earth Story" (Click here to visit our Facebook group). “The Earth Story” are group of volunteers with backgrounds throughout the Earth Sciences. We cover all Earth sciences - oceanography, climatology, geology, geophysics and much, much more. Our articles combine the latest research, stunning photography, and basic knowledge of geosciences, and are written for everyone!
We hope you find us to be a unique home for learning about the Earth sciences, and we hope you enjoy!
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talkwidtech
This Is Why We Can't Throw All Our Trash Into Volcanoes.
Incineration of organic waste in Erta Ale Volcanoes lava lake as simulation of what would happen if a person would fall into the lava lake (since both are organic and contain water and would thus be expected to trigger similar response).
It is frequently discussed whether it is possible to sink in lava. Due to its high density, a person would generally be expected to remain on the surface. Indeed it is possible to briefly walk on certain types of lava if professional heat-protective clothing is worn (do not try yourself).
However, the video shows that falling from a height, a large object and thus also a person would be able to penetrate the crust of the lake and submerge in it. The test was performed with a box of camp waste (largely food rests) in a cardboard box. Estimated weight 30kg, Size 60x60x60cm. Fall height, about 80m. The lake reacts with violent lava fountaining activity, presumably in part due to steam produced from the organic matter.
The lava lake at Erta Ale has persisted for many years and contains relatively fluid basaltic lava. Only few volcanoes have such lakes.
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Source :- YT | Photovolcanica
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reblogged

Deuxième destination conseillée de Sumatra : Berastagi! Ville où l'on cultive le choux pour exportation à travers tout le pays grâce à sa terre volcanique. Nous escaladons donc notre premier volcan d'Indonésie, pays situé à la convergence de plaques tectoniques et de failles sismiques. En effet, il y existe au moins 150 volcans toujours actifs aujourd'hui. Nous voici sur le Mont Sibayak, stratovolcan culminant à 2181m d'altitude. Habituellement, il y a un lac dans le cratère mais lors de notre passage il était asséché par manque de mousson. Les puissantes fumeroles étaient quant à elles bien présentes !

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