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Celebration at sea

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This weekend, just in case you missed it, was the fourth of July. It's all very well and good celebrating it at home, with a barbeque and a fireworks display, but how do you celebrate when you are on a ship in the middle of the Bering Sea, miles from anything?

Simple! You have a barbeque and some fireworks! Only this way, the fireworks were expired flares that had to be "disposed of". It's pretty cool to see how parachute flares launch themsleves in to the sky and then light up, or to watch people parading round with signal flares doing terrible impressions of the Statue of Liberty.

Anyway, just because we're scientists at sea, doesn't mean that we don't allow some time for fun...

Arctic blog 3a.jpg

The back deck BBQ

Arctic blog 3b.jpg

A demonstration of signal and parachute flares - AKA shipboard fireworks!

Feeling the pressure...

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I've been trying to write this last entry for a few days now, but we've been having real fun trying to get the internet! Something to do with the satellite being on the equator, and us being in the Arctic...

So we're over a week in to the cruise now, and everyone has settled in to somewhat of a routine. However, once in a while, something comes up that throws us all for a loop. A couple of days ago was my turn.

Part of my position here is to deploy sediment traps, and another is to run the experiment for primary productivity. This second one involves me getting up before sunrise and "spiking" samples with a radioactive carbon isotope. The samples then sit in an incubator for 24 hours
photosynthesising, and I get to filter them after that.

Arctic blog 2a.jpgPutting the samples in the deckboard incubator.


The idea is that we can use the C14 isotope to see how much carbon the phytoplankton are creating each day. Normally I get to do this experiment every other day - set it up one day, take it down the next. BUT! If we have to deploy our sediment traps, we MUST do a production experiment. That means that occasionally I double up, and a couple of days ago I had to do exactly that.

 

Arctic blog 2b.jpgRecovering the sediment trap array


Two productivity experiments and a sediment trap deployment and recovery meant that I only got 2 hours of sleep over a 42 hour block. Sleep deprived, I finally managed to take a break when we reached the first deep site of the cruise. This station, one of two that are greater than 2,500m took over 4 hours for us to profile with the CTD. It also meant that we could cover the CTD with styrofoam cups.

It's somewhat of a tradition that oceanographers have. One deep station per cruise is unofficially designated as a cup cast, where all the scientists on board decorate cups and tie them to the CTD. Now, styrofoam is mainly air, and as the pressure increases with depth, the air gets forced out of the foam and the cup reduces in size. This particular cast was to a depth 2,700m (8,900 feet, or about 1.8 miles). You can see from the picture below how much the cups shrink - they were both the same size before the cast! Just to give you an idea of the pressures involves, at the bottom of the cast, there is the equivalent pressure of 270
atmospheres, or over 4,000 pounds on each square inch!

Arctic blog 2c.jpgStyrofoam cups, before and after a trip to 2,700m


We've deployed traps again today, and they are due out tomorrow. Looks like I've got
another block of no sleep, so the bunk is looking very tempting right now. G'night
all!!

Just thought I'd post a quick update, and share a few links with you. The first is a ship tracker. It gets updated every so often, so the position may be a few days out of date. You can check out where we are by looking at this site.

There's also several other people blogging on here too. We have a school teacher from Rhode Island, who is shadowing our lab group, and a journalist who is writing for Nature magazine. Hopefully I'll finally get my name in Nature! Finally, the official site will have updates from the Chief Scientist, as well as all the details about the other five Bering Ecosystem Study (BESt) cruises that there have been. It's not been published yet, but we have been told that the first post has been submitted!

I'll post again tomorrow, as we will be deploying sediment traps - basically several open topped tubes that catch anything and everything falling in to them. I'll explain why after we deploy them.

EML goes Arctic!

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My last post was all about the distances that I'd travelled being an oceanographer.
Well, I've now left the lab in Maine, and I'm on a research cruise in the Bering
Sea. We left Dutch Harbor (of Deadliest Catch fame) on the 16th July, and we'll be
out here for a month. Dutch is very much like Portland - a working waterfront, heavy
on the fishing. The big difference, apart from the cold, is that they don't really
have any seagulls. They have things a lot bigger...



Arctic blog 1.jpgI'll post later with some details about what the hell I'm doing up here, and also to
put more cool pictures up.

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