[georss] GeoRSS for earthquake/tsunami reporting

[Brian Shiro]

GeoRSS gurus:

I have created some RSS 2.0 feeds of tsunami bulletins from the  
Pacific Tsunami Warning Center.  These include <georss:point> tags  
with the earthquake location, but I'd like to also include earthquake  
depth and magnitude as XML fields.

1) Could I use the <georss:elev> tag with negative elevation values  
to denote depth?

2) Is there any generic tag I could use to denote the earthquake  
magnitude?  Perhaps I could use the <georss:radius> tag, although its  
purpose isn't really clear to me.

I think GeoRSS's ability to define polygons and countries could  
really enhance our tsunami warning products since we could define the  
geographic areas pertinent to a given tsunami bulletin.  If anyone  
has suggestions along these lines, I'd be interested in hearing them.

Thank you,
Brian Shiro
NOAA Pacific Tsunami Warning Center