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Summit Deflation Leads to Slight Drop in Lava Lake Level

The U.S. Geological Survey reports summit deflation began the morning of Wednesday, April 18, 2018, and the lake level has dropped slightly.

In this photo, an HVO geologist checks on a time-lapse camera on the rim of Halema‘uma‘u Crater. A large spatter site is active along the east margin of the lake. Courtesy U.S. Geological Survey.

On Wednesday morning, April 18, the lake was about 14 meters (46 feet) below the overlook of the crater rim, having dropped roughly 4 meters (13 feet) since yesterday morning.

Just a Quick Post!

I just realized that if I don’t post something soon… it will break my record of not blogging everyday.

I spent the day with a bunch of media folks today exploring the Hawaii Volcanoes National Park.

I’ll just post this one picture tonight as I have a lot to catch up on and I just want to make sure that my blog has at least one post each day.

A "Nerds Eye View" of me at the rim of Halemaumau

Evidence From Distant Parts of Earth’s Crust Suggests the Core is Pulsing, Sending Up a Regular Batch of Magma to the Surface

…Evidence from Hawaii and Iceland hints that the planet’s core may be dispatching simultaneous plumes of magma towards the surface every 15 million years or so.

If the hypothesis is true, it would revolutionize our ideas of what’s happening far below our feet. Independent scientists contacted by New Scientist were split, with some scornful and others intrigued…

…Regular pulsing of plumes is not a new idea, but when the pair compared their results with similar pulsing in Hawaii, which also sits on a plume, they found a surprising correlation. Data collected by Emily Van Ark and Jian Lin of the Woods Hole Oceanographic Institution, Massachusetts, suggests that Hawaii’s plume pulses have coincided with Iceland’s (Marine Geophysical Research, DOI: 10.1007/s11001-009-9066-0).

“These two are on very different parts of the Earth, so I don’t think the synchrony could be related to something in the mantle,” says Mjelde. “It must relate to the core somehow. I can’t see any other possibility.” This would mean that the Earth’s core periodically heats up the overlying mantle, generating synchronised plumes that rise to the surface at widely separated spots.

Full Article here