Posterous theme by Cory Watilo. © 2012 Paul Clip.

Filed under: nature

Mount Diablo Tarantulas

As I was biking up Mount Diablo the other day, I came across an animal I'd been keeping an eye out for: a male tarantula in wanderlust. They're easiest to spot as they cross the road, and this one was quite determined to get to the other side.

In the fall the male tarantulas set off in search of females to mate with. If she doesn't eat him (which she'll only do if she's famished) he'll keep looking for partners until the cold weather, or a hungry lover, gets him. Females, on the other hand, can live up to twenty years.

I've always liked spiders but this one was wary of me and wouldn't stay on my hand. That's OK :-)

This article has more information about these fascinating creatures.

(download)

Visualizing One Hundred Years of Pacific Rim Earthquakes

Whenever I hear of a major earthquake, I always wonder when our turn will come. I've been asking myself that question way too frequently recently. My family and I live in the San Francisco Bay Area, prime earthquake country (or so I thought until I looked at Japan...). I started playing with NOAA's earthquake data after the New Zealand earthquake. After the recent Japan quake, I thought I'd publish a few graphics. 

Disclaimer: I'm no geologist, statistician, or expert on earthquakes. I don't even play one on TV. I don't think anyone can predict earthquakes with any certainty (though there is some interesting research) and I certainly won't try.

The Ring of Fire is the name given to the chain of mountains, volcanoes, and faults that ring the Pacific Ocean. Of the world's 16 largest earthquakes since 1900, 15 occurred in the Ring of Fire.

Here's an interesting graphic showing the earthquakes above 6.0 magnitude that have hit the Ring of Fire region since 1900. Earthquakes of magnitudes between 6 and 7 are in green, between 7 and 8 in blue, and 8 or higher in red.

Ring_of_fire_earthquakes_1900-

Notice anything? Well, as a Californian, the first thing that struck me was: "we're getting off lightly!".

This movie gives you a different way to see the earthquakes. Same legend as before: magnitude 6+ green, 7+ blue, 8+ red. The video isn't the most exciting one you'll ever see. It helps to pick a point of interest on the map and imagine some elevator music in the background :-)

Let's dig deeper...

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Golden Scarab, Golden Hair

I love insects. Many are a beautiful blend of art and science: amazing miniaturization packaged as a work of art. This golden scarab is a perfect example. No wonder the Egyptians revered them. Sadly I only got this one shot in Katrine's hair before it flew away.
Unfortunately I have no idea what kind of scarab it is, or even if it qualifies as a scarab instead of a beetle. I think it deserves the name though!

Golden_bug_golden_hair