Are there any scientific studies being done on why birth names cycle in popularity?

I was checking out the social security popular name website which rates names up to the 1000th place for the last 100 plus years. I found it odd my son and daughter and me had been a few places off on popularity the past few years. I also found it odd how a name could jump 500 places in 1 year. for the year 2007 only 2 names for girls didn't begin or end with a vowel and half both began and ended with a vowel giving the names a very similar feel. what do you think?