The past few days saw us reach 2 huge milestones on our scientific journey. First, on Wednesday we crossed the Mid-Atlantic Ridge! This marks where the South American and African plates are spreading apart. I decided that was the perfect day to distribute  UTIG (University of Texas Institute for Geophysics) t-shirts to the science party. … More Milestones

Things to watch for

Our watches are spent processing data as it comes in alongside other folks (“observers”) who stand watch over all of the equipment to make sure the data keeps coming in and that it is of good quality. Their vigilance is key to ensuring, for example, that our seismic sampling is properly timed and equally spaced … More Things to watch for

Multi-Channel Seismic and the Half-Way Mark!

We are now about half way through our expedition.  We are closing in on four weeks out at sea and have just under four weeks remaining before we return to terra firma.  We recently reached the western-most point in our journey and turned around to return east across the study area.  Now it’s time to switch gears in … More Multi-Channel Seismic and the Half-Way Mark!

Operations Update

Today we finished the ocean bottom seismometer (OBS) part of our survey! We carried out 5 profiles, each with 7 OBSs. For every profile we deployed the instruments, traversed back along the profile while the OBSs recorded our sound source, and then recovered the instruments (more on that later). It is very satisfying to have all OBSs back … More Operations Update

Seismic Equipment: OBS Part 2 – Deployment!

Howdy! Last couple days have been very very exciting for the science crew. We have started deploying the equipment! At the time of writing, we have finished our first OBS transect (deployed, shot the air guns and collected the OBS) and finished deploying the OBS on the second OBS transect. We are now maneuvering the ship … More Seismic Equipment: OBS Part 2 – Deployment!