lucy24 - 3:52 pm on Jun 3, 2013 (gmt 0)
I considered that it's always the same user who uses the same search to access the site, but the close to 100% bounce rate doesn't seem to be coherent with this guess.
Never mind bounce rate. Do you have any other reason for thinking it's all the same person? Identical IP and/or UA? Things you can more easily get from raw logs if tracking cookies are disabled.
There is one situation where you'll get repeated pseudo-visits with a 100% bounce from the same human-- but it wouldn't happen nine times in a single day. You get it when someone opens a page in a tab and forgets about it, and their browser is set to reopen all previous pages on restart. Most noticeable if it's an obscure page and you start wondering why someone needs to read your article on green bakelite widgets eighteen times in a row. I've seen it often enough to recognize the pattern. (One time mercifully was a WebmasterWorld member, who was able to diagnose it.)