Walk this way
What a perfect way to start the day than with a glorious sun.
Last night, just a smidge before sunset, the MTs deployed the seismic streamer. We are currently collecting amazing data from over 3000 meters below the surface of the RV Palmer, and approximately one kilometer into the sediment. The scientists can look at the data and see trends in sedimentation, and the occasional hint of the basement (crust).
With floats in the water trailing the guns, to raw data, to processed data, the seismic is working wonderfully.
Thanks to working with the ETs we made our deployment window. I have not yet mentioned the ETs (electronics technicians) or their role in data collection on the vessel. Meet Sheldon, who has been an ET for over 35 years with the antarctic program. It is his team's job to make sure that when equipment needs to work it works, no glitches. There are two ETs currently on board and they are always hopping. These individuals are the hardware engineers, that make sure that the wiring and connections are all in sync with the computers collecting the data on the vessel. If a signal from the seismic streamer is not working correctly, then an ET is called. If the data collecting equipment malfunctions, the ETs have to use what is on board, and fix the problem so that science can continue.
Meet Sheldon Blackman, one of two marine techs aboard the RV Palmer.
If everything goes according to plan, we should be continuing with the seismic for 24 hours. Besides weather there are other conditions that might stop the use of the seismic, and put operations on hold, so our daisy chain includes the protected species observers.
On board this cruise there are two protected species observers. Meet Lexi and Nina!
On board the Palmer are two protected species observers. The agency Lexi and Nina work for were contracted by the National Science Foundation to monitor and record mitigation measures set forth in the IHA (Incidental Harassment Assessment). The Palmer is an American flag ship and with the marine mammal protection act has been asked to monitor marine protected species during this cruise. The IHA sets guidelines for the protection of protected species.
Wildlife sightings have been difficult, the individuals pop up for air and we frantically try and identify the clues each species is willing to show.
The PSOs might not see the individual, but this blow with the distinctive 'V' is identified as a right whale.
On this cruise if a marine mammal if seen within 100 meters of the source (the seismic gun) then operations are shut down. If the species is seen leaving the shut down area within 15 minutes of sighting then operations can continue. If the species dives and the observers do not see it leave then operations are shut down for 30 minutes. It is a bit more complicated than I have described, but the gist is operations can cease if we see marine mammals within prescribed guidelines.
Sleek and smooth, gracefully slipping through the water, fur seals.
As you can tell, our daisy chain becomes more and more like a Celtic knot, not really a chain at all, but a group of interwoven strands holding everything together.
Greetings to Sinagua Middle School in Flagstaff, Arizona. At Sinagua learning is hands on, interactive, and always a good time!
Today's last note is on the topic of walking. I would love to be eloquent enough to describe walking on an ocean research vessel, as walking is an art form. The floor, or as we call them 'decks', constantly vibrate with the ships engines, and they then tilt at different angles depending on whether or not the ship is pitching or rolling. In other words, walking involves a lot of swagger, arm motions, and fair bit of finesse. On stairs, well I bet you can imagine the gyrations for staying upright.
Comments