BobGeo 2009. Day 14 – The last full day of the BoBGeo Cruise

As the cruise comes to an end the seismic streamer and air cannons are deployed for the last time – Multibeam continues mapping the Bay of Biscay sea floor and Chirp is still chirping – Last night’s grab comes up empty.

You can also read the French version of these blog pages here

This will probably be my last blog of the BoBGeo cruise as we are heading for Brest tonight and should arrive around 8:00am tomorrow.

I have very much enjoyed my first time at sea, it has been an interesting experience, even when the sea did its best to make me ill. I would like to thank Nikki King back at Oceanlab for giving me the opportunity. Up until recently, Nikki was responsible for Work Package 9 – Dissemination and Outreach in the CoralFISH Project. However, she has just taken up a position at the University as a lecturer in Marine Biology which is one of the reasons why you got me instead of her!

Nikki doing what I suspect she enjoys best.

When I started the blog I said that I though it would be a steep learning curve but thanks to all my colleagues on board I am now maybe half way up that curve and understand a bit more about Chirp, Seismic, Multibeam, Calypso, Casino and of course Scampi and corals. I hope I have managed to pass on this information and what it has been like to be onboard a research cruise. There are lots of people I should thank, but the list would be so long that it would take up all of this blog.

One person I should mention and that is Thierry Schmitt. Each night after I post the blog, Thierry then translates it into French and give it back to me so it can get posted on the other blog site that supports the French accent. My only regret is that I did not think of it until we had been at sea for a few days which is why the early blogs are missing on the French page. I hope the children at Stefan Ker’s son’s school and the families of those on board have at least been able to follow some of what has been happening here on the Pourquoi pas?
Thanks Thierry

It may be the last day but there is still work to be done. Last night the counterbalanced sediment grab was deployed but unfortunately it was triggered before it hit the sea floor and came back up empty. They have not had the best of luck with the sediment grabs.

Waiting for the grab to surface.
The grab coming back on board.

Today has been another pleasant day with the sun shining and the sea not too rough. Chirp, Seismic with the air cannon and Multibeam have all be in operation since early this morning. I have put a video clip of the air cannon in operation on YouTube, you can see the explosion of bubbles when the cannon goes off and if you listen carefully you can just hear the thump it makes, it is quite difficult to hear the sound, it happens just before you see the bubbles erupt. Also, at the end of the clip is the sound that the Chirp makes and you will realise why it is called Chirp. The sound was recorded as I sat on the central stair at level three. However, it is possible to hear when you stand outside at first I thought it was the birds that are often around the ship.

The video can be seen at YouTube

As the data comes in from all the acoustics and Multibeam the data processing continues as new profiles are created and the mapping continues.
The Seismic data coming in.

David, Pascal and Stefan study the latest Seismic profile.

Delphine and Benoit continue to update the Bathymetric map with the data coming from the Multibeam.

Below is the latest profile coming from the Chirp

The Chirp data as it comes in. As you can see it is seems to be in sections, this is because of the swell. Do you remember Vincent and Mathieu (how can you forget Vincent’s grin?)

It is their job to tidy up the data and to make the profiles more presentable.A Chirp profile after it has been processed to join up the sections.

Olivier Soubigou who has responsibilities for communications, chats with Brigitte Guillaumont about her data. (I promise to pronounce your name properly the next time we meet Olivier.)

The one who started planning this project over 2 years ago when he submitted the Application to the EU

Jean-Francois Bourillet.

And finally what it has been all about!

The Corals

Au revoir


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