Today begins our last dive – however this one will be a dosey. We are planning on about 54 hours of bottom time for this dive. We will be mapping and collecting rocks and sediments, as well as making heat flow measurements. We had to completely re-configure Jason’s dive basket to accommodate all the rock boxes we wished to bring. We’ll see if we find as many rocks as we have baskets!
Our second to last dive, which ended last night, went seamlessly. We were again pumping fluids for our fluid program people, and also did some pressure data downloading from Hole 1383C. We also got some great news about “the B Hole”, Hole 1383B: pressure data indicate that this CORKed observatory is officially sealed! There is no way to tell this definitely based on just visual observations that it looks like it installed properly – you need the pressure data to see the difference between bottom pressure prior to sealing and borehole data after sealing. The data are conclusive on this front and we are all thrilled.
We are making plans for Cinco de Mayo – this will mark the end of our dive series and seems like a good enough reason to call for celebration! We are planning a BBQ and piñata. The piñata will be constructed of materials we have on hand and fashioned as a CORK. Not just any CORK this will be Hole 395A. This is the CORK that we decapitated during installation operations during Expedition 336 last fall. There was a failure when we tried to unhook from the wellhead and we simply sheared the head right off that CORK. So since we broke that CORK once so we might as well break it again in celebration in part to the successful installation of the B Hole. Pictures to follow!