Anyone watch Star Trek? Remember the people that were always tirelessly working and performing miracles in the engine room to ensure the Enterprise wasn’t lost? It’s sort of like that on board the R/V Langseth as well. This expedition would all be for naught if the ship did not stop and go as needed. The … More Looking under the hood
Hi there. Today, Clint and I (John) took a tour of the bridge, and thought we would share with you what we saw. Currently on shift: 2nd Mate Mason [right], along with AB (Able Seaman) Josh [left] and OS (Ordinary Seaman, or “Outstanding Seaman” is his words) Aaron [center]. They each work a total of … More The Bridge over a Ridge
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
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
How do we know how fast the pressure waves move through the water? Well one way that we can figure that out is by deploying an expendable bathythermograph, or XBT, to measure the temperature of the water as it falls down through the water column. The probe comes in a long cylindrical canister that we … More Taking The Ocean’s Temperature!
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!
In honor of finishing the OBS portion of the expedition, I will talk about how we go about recovering the OBS instruments. This has been my favorite as well as the most stressful aspect of the OBS process. Even though there were some issues, we were able to recover all of the OBS we deployed!!! I … More Seismic Equipment: OBS Part 3-Recovery
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
Alexis here- Like most research cruises, ours is a 24-hour operation. So whether it’s day or night on the Langseth, there’s always work being done. The ship’s crew maintains a 24-hour schedule to keep operations moving, whether it’s upkeep on deck or in the engine room ensuring things are running smoothly. The Captain and his … More Science waits for no one!
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!