Since many people seem to be worried about nuclear fallout from Japan’s nuclear reactors, particularly on the west coast, I’m happy to introduce this live map, updated every five minutes, from the volunteer operated National Radiation Network.
Since this is likely to be popular, and to minimize the page loads on the website, I’ve put the image beyond the “read more” divider. Please only click if you are interested in seeing the live USA radiation counts map:
The map is updated every 5 minutes.
Key to the map:
Nuclear Power Site Location
Alert Level = 100 CPM (counts per minute)
As you can see from the four west coast stations, there does not appear to be any elevated activity in radiation counts. The CPM is a unit of measurement for a Geiger counter, corresponding directly to the audible beeps or clicks per minute. CPM is the standard unit of measurement for alpha and beta radiation, and is also commonly used to express background radiation in numerical terms.
Normal background radiation is typically in the range of 25-75 counts per minute, depending on location and surroundings. Much of the natural background radiation comes from cosmic rays in addition to natural decay of earth bound elements. Of course, if somebody drives a banana truck into your neighborhood, that may change.
You can become part of this network if you are interested by purchasing a datalogging geiger counter and the network software to enable you to plug into and submit live data to the network via your office or home internet connection. Images below show a digital Geiger counter and the software with the RS232 interface cable.
Unfortunately, the company, MineralLab announced on their website that they are completely sold out due to the demand in wake of the Japan reactor events.
Bookmark it for future use if you are interested and visit again when this all settles down.
In related news, a similar setup is operating online in Tokyo. The one week graph is certainly encouraging.
Posted: 2011-03-16 2:28 pm by Simon Gibson.
Here are the outputs from the Geiger Counter in our office in Azabujuban, Tokyo:
4 hour reading
24 hour reading
One week reading
h/t to Poptech for the original map link.