Category Archives: How Geophysics Works

When Tectonics Started

Posted on October 1, 2014 by Ron Miksha

The Earth is the only planet known to have continents adrift. Scientists are rather certain that the drifting began about a billion years into Earth’s history. This means that for a thousand million years, the continents just sat there. Idle. … Continue reading →

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Into Subduction

Posted on September 3, 2014 by Ron Miksha

On some level, we are all into subduction. But not many of us apply for the license. If you sometimes follow Randall Munroe’s creative web comic xkcd, then you may have seen this comic. What does it mean? I’d like … Continue reading →

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The Old Bird Sits Up

Posted on August 30, 2014 by Ron Miksha

Readers of this blog know that I have sometimes pointed at Emperor Lord Kelvin’s fragile suit of clothing. Although his early life was crammed with brilliant science, he was a fumbling troglodyte by age 50.  He became resistant to scientific … Continue reading →

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Dry Rising Crust

Posted on August 22, 2014 by Ron Miksha

Dry, rising crust? No, not the morning toast coming up.  A paper released today by researchers at Scripps Institution of Oceanography shows that the American southwest, in the grips of a “once-in-a-century” drought, is rising because groundwater which normally keeps … Continue reading →

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Chile Shaking. . . it will happen again, of course

Posted on August 19, 2014 by Ron Miksha

Earlier this week, geophysicists reported an analysis of the April 1, 2014, Chilean earthquake which killed six and displaced tens of thousands close to the epicenter near the Peru border. They said the new study is yielding information which may … Continue reading →

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Who’s Got Mantle?

Posted on August 16, 2014 by Ron Miksha

NASA has reprocessed the Apollo missions’ old lunar seismic data. The data is from 1969 through 1977, the latter being recorded by equipment still active long after the last astronaut went home. This is old seismic data. Reprocessed, it tells … Continue reading →

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Zero Degrees of Kelvin

Posted on August 7, 2014 by Ron Miksha

My book, The Mountain Mystery, is not kind to the great physicist Lord Kelvin. I feel a bit uneasy admitting that in my research on the brilliant fellow, I just could not get comfortable. I wouldn’t have been his friend. … Continue reading →

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Seismic Saves the World

Posted on August 5, 2014 by Ron Miksha

Remarkable that we haven’t blown the planet to bits with an atomic bomb.  Not yet, anyway. An atmospheric nuclear test ban went in effect August 5, 1963. Exactly 51 years ago today. And almost 20 years after Hiroshima and Nagasaki … Continue reading →

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Goddess Pele is stirring

Posted on July 3, 2014 by Ron Miksha

The goddess Pele may be restless again.  It seems that the legendary fire-woman, believed by early Hawaiian islanders to live under the sea and breathe lava into the throats of mountains, may be stirring. According to the ancient legends, the … Continue reading →

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Earth’s Mid-life Crisis

Posted on June 16, 2014 by Ron Miksha

Some researchers think the Earth went through a mid-age doldrum, a sleepy period of listless ennui. Its plates slowed down, they claim. Or maybe stopped churning completely. For about a billion years, (1.7-.75 bya) the planet was boring. No serious … Continue reading →

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