01-16-2010, 11:46 AM
Thank you for the explanation, Leigh. I have been wondering about the relationship between the summit and Pu'u O'o. Today the tiltmeter for Pu'u O'o went up (inflation) pretty dramatically while the tiltmeter at the summit remained fairly stable (but elevated over previous periods). Is there a sort of pistoning that goes on between the two vents --when one is inflated, the other is deflated?