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Chris Rowan
Lives in Chicago
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Chris Rowan

Structure-Tectonics  - 
 
 
I couldn't help but go a little overboard when confronted with this amazing image from the NASA Earth Observatory last week. 
But what of the ridges themselves? There are a number, all running parallel to each other in the same east-west direction, all with the same tan-green-red striping that suggests that we are seeing the same units geologically cut-and-pasted across the landscape. This repetition of the same layers ...
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great write-up!  
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Chris Rowan

Geoblogs  - 
 
I seem to periodically end up doing this, but recent events "inspired" me: a little bloggy rant on the impossibility of short-term earthquake prediction.
One of the courses I'm teaching each semester here in Kent is called 'Earth Dynamics': an introductory-level geology course aimed at the broader undergraduate population. With that in mind, I try to identify and highlight areas where the topic at hand may intersect with the everyday lives of my ...
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Keep fighting the good fight Chris!
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Chris Rowan

Miscellaneous  - 
 
As a fieldwork heavy science, we should contribute to this.
 
LAST DAY to fill out this survey. If you have ever done field-based research, please fill it out. PLEASE share with others.
Thank you for your interest in our survey. The Biological Anthropology Field Experiences Web Survey is designed to solicit input on the ways in which fieldwork does or does not provide a safe scholarly and research environment for all. Rather than determining the total number of instances, ...
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Woops, the survey ended.
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Chris Rowan

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The Allochthonous family does science outreach: our daughter's account of her class's visit to our department.
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Chris Rowan

Structure-Tectonics  - 
 
A quick look at the latest earthquake in Western China, very close to - and probably on the same fault system as - the 2008 M7.9 Wenchuan earthquake.
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Chris Rowan

News Links  - 
 
Very good discussion of the issues surrounding the management of natural hazard risks in NZ after the Christchurch earthquakes. As well as building resilience, lax rules on land-use appears to be a thorny issue.

“If you’re not on a fault zone, a volcanically active zone, or a tsunami zone, you’re probably in a valley that’s prone to flooding or having things tumble down the hills towards you.”
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great article.  
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Chris Rowan

Shared publicly  - 
 
I couldn't help but go a little overboard when confronted with this amazing image from the NASA Earth Observatory last week. 
But what of the ridges themselves? There are a number, all running parallel to each other in the same east-west direction, all with the same tan-green-red striping that suggests that we are seeing the same units geologically cut-and-pasted across the landscape. This repetition of the same layers ...
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Chris Rowan

Structure-Tectonics  - 
 
I thought this was pretty cool: most of the earth has been measurably deformed in the last decade by coseismic deformation in the largest earthquakes (mostly Tohoku and Sumatra) - enough to affect GPS measurements.
The Global Positioning System has completely revolutionised how geologists study the deformation of the Earth. If you leave a GPS receiver in a fixed location for days, months and years, it is precise enough to measure motions on the millimetre scale, allowing us to track strain building up ...
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It is, isn't it? It pretty much demanded to be written about.
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Chris Rowan

Geoblogs  - 
 
Natural events like earthquakes and floods become disasters when they hit close to areas with a lot of us, and our stuff, and we are poorly prepared for the consequences. I've been exploring ways of visually representing this to more intuitively explain (for example) why some magnitude 7 earthquakes are worse than others, or even why it's not always the biggest earthquakes than do the most harm.
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I was just thinking that Pager does all this
http://earthquake.usgs.gov/earthquakes/pager/

But I find you only have a few snippets of info at the beginning, so I generally go with magnitude, type, depth, population density, and standard of living.  For example, I said the China earthquake would be big, but when earthquakes are 400 km deep, I say they are nothing.
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Chris Rowan

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Come for the some spectacular avalanche footage, get some Earth Day meanderings on humanity's relationship with Nature thrown in for free!
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Chris Rowan

Structure-Tectonics  - 
 
A look at both of the big earthquakes that struck Iran over the last week. Shallow and deep collisional processes, on opposite sides of the country.
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Harold Asmis's profile photo
 
I'll go with deep extension now, mainly because the video shows a very low PGV, ie. the people are still standing.  :)
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The aftershocks from this week's M8 quake are rather interesting: extension in the subducting slab and strike-slip and extension in the overriding. I indulge in some speculation as to why.
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Nice post, very interesting read
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In his circles
69 people
Have him in circles
2,048 people
sjaak coolen's profile photo
Meagen Pollock's profile photo
James Repka's profile photo
Greg Johannsen's profile photo
Ben Reay's profile photo
Muhamad Hasim's profile photo
Vladimir Okorokov's profile photo
Karen Staats's profile photo
Chrono Shindou's profile photo
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Postdoc geologist and blogger.
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Colchester, UK - Johannesburg, SA - Cambridge, UK - Southampton, UK - Edinburgh, UK
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