I have two links for HF frequencies that may have quake related traffic and broadcasts.
HF Ute, Military, Ham and Diplo frequencies
http://monitor-post.blogspot.com/2008/05/breaking-news-earthquake-in-china-ute.html
Shortwave Broadcast
http://mt-shortwave.blogspot.com/2008/05/breaking-news-earthquake-in-china.html
More as we get it.
Larry