Sorry creationists: rocks just aren’t that coy about their age

Remember Marcus Ross? He was the young-earth creationist who caused a bit of a stir earlier this year when the New York Times reported that he had been awarded a PhD in Geology. As it turned out, the only singular thing about Dr. Ross’s thesis was the levels of cognitive dissonance required to complete it; whilst professing a belief in an Earth only 6,000 years old, he was simultaneously employing somewhat more reality-based estimates in his study of Cretaceous marine reptiles (and, it seems, doing a pretty good job). At the time, I found myself feeling quite sorry for him, even if I did worry about the rhetorical use to which he was going to put his qualification in his new position teaching at Liberty University (yes, that Liberty University).
So I guess it wasn’t really much surprise to find him featuring in a report from a conference on Creation Geology, held earlier this summer at Cedarville University, another self-proclaimed “Christ-centered learning community”, where he gave a talk about his experiences:

He entered his university studies as a Christian and a young-earth creationist and faced significant challenges to his faith and his creationist geology position from fellow students and professors, never hiding either his Christian faith or his young-earth creationist position. His testimony showed that it is vital to establish good personal relationships with one’s professors and know when to be more circumspect in one’s witness and in on-campus activities. But even more important, he testified that it is absolutely vital to always maintain a consistent strong connection to a local supportive church fellowship, because there he found the support and nurture that kept him going when times were tough in these secular universities where he studied.

Confirmation of his sound advice was demonstrated earlier this year when upon his graduation from the University of Rhode Island a reporter from The New York Times picked up the story, and when that reporter interviewed staff at that university in order to perhaps find some “mud” to throw at Dr. Ross, the staff only spoke kindly of him and of the quality of his science!

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Categories: antiscience, deep time

Of aftershocks and tsunamis

There’s been another bout of seismic activity in Indonesia, with three earthquakes of magnitude 7 or greater, with the largest registering as an 8.4, and dozens of smaller quakes (many of which were still over magnitude 5.0), occurring since last Wednesday. The media coverage of these events prompted GrrlScientist (who keeps tabs on the goings on in her birds’ home region) to e-mail me a couple of excellent questions, which with her permission I’m answering publicly:

I heard this morning that the same area of Sumatra has been hit with three earthquakes within the past three days. What I want to know is: how do the scientists know these are three separate earthquakes instead of aftershocks of one quake? Is it because of the sheer size of each of these quakes? Also: are aftershocks always smaller than the initial earthquake?

To answer this it is necessary to first answer the question, what is an aftershock? An earthquake rarely occurs in isolation, because rupturing and displacement on one section of a fault will redistribute the stresses on adjacent sections, and even on other nearby faults, which may well trigger further earthquakes. So you often get days, weeks or even months of enhanced seismic activity – numerous earthquakes of various sizes – within a particular region. The biggest earthquake in such a sequence is referred to as the main shock; smaller earthquakes that precede it are referred to as foreshocks, and those which follow as aftershocks. By definition, a foreshock or aftershock is always smaller than the main shock.

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Categories: basics, earthquakes, geohazards

Places you do not want to find yourself

1. The middle of the Namibian desert with a broken car.
2. The Yucatan Peninsula, 65 million years BP.
3. Sitting on a flight back to Johannesburg as the captain announced the final result of England’s abject capitulation to South Africa in the Rugby World Cup.
At least it meant that I wasn’t forced to watch it, I suppose.

Categories: bloggery

Who needs science when you have pointless gadgetry?

Those clever Japanese have done it again – whilst seismologists look in increasingly unlikely places for a method of reliably predicting earthquakes, they’ve produced a little box which provides a timely warning of impending doom:

A broadband and communications provider serving parts of the Tokyo area, will offer an earthquake advance warning sytem to subscribers beginning October 1, 2007. The “Urgent Earthquake News Flash”, issued from Japan’s Meteorological Agency, will be transmitted to specially installed terminals that use fixed-line phone lines.

The system forecasts the quake arrival time and the seismic intensity of the tremor, 10 seconds in advance, 24/7.

A voice will automatically announce, in Japanese, “The earthquake of four in the seismic intensity will come in ten seconds. 10-9-8 etc.”

itscom-quake.jpg

Imagine the peace of mind this device will provide for everyone living on the 27th floor of a skyscraper Рrather than sitting around ignorance as the deadly seismic waves race towards Tokyo, they will now have a whole ten seconds to panic get to a place of safety before the quake hits. And all for the bargain price of 23,000 yen (about £100, or $200).
Thanks to Mo for bringing this exciting news to my attention (and for making me choke on my coffee).

Categories: earthquakes

Footage from Mount Etna

Mount Etna has been erupting again, and some fairly impressive footage of lava fountains have made it onto YouTube:

Both clips at some point zoom out to show that the footage is being filmed from the streets of a town in the shadow of Etna, probably Catania, Sicily’s second-largest city. Despite their proximity, however, these eruptions actually present very little real danger to the population, because unlike other volcanoes in the western Mediterranean region like Vesuvius, Etna tends to erupt runny basaltic lava flows rather than periodically blowing its top, so whilst there’s always a risk of flows overwhelming property, they move so slowly that the people can get out of the way.

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Categories: geohazards, volcanoes