Earthquake scientists have been expecting major event in Nepal since 1934 . Population density , weak building infrastructure amplified damage , the University of California , Berkeley 's spokesman says . `` This event , while large and tragic , is not unusual '' in region , geological engineer says .
Earthquake scientists have been expecting major event in Nepal since 1934 . Population density , weak building infrastructure amplified damage , USGS spokesman says . `` This event , while large and tragic , is not unusual '' in region , geological engineer says .