Wednesday, February 21, 2007

The Southern Ocean Thus Far (in photos)

Sorry this took a while... it's quite challenging uploading this quantity of photos from our spotty satellite link. All but 3 of these are stills from video footage... I'm putting together video clips, but I'll have to upload them later when we've got better satellite connectivity. Anyway, enjoy:

It snowed on my last night at school.

One of my favorite views of Cambridge.

Winter in the northern hemisphere...

... is summer in the southern.

Driving on the left side of the road is dangerous, pretentious, stupid, and fun!

Point your camera at practically anything in New Zealand and you get a masterpiece.

The New Zealand flag on the topmast of the R/V Roger Revelle.

Capt. Dave Murline giving a safety briefing to the scientists.

Loading took a few days.

Etc.

All aboard! Cast off the lines! Anchors aweigh!

Adventure!

A last glimpse of land.

Just doin' my job before it gets too windy... recording 'room tone' for background noise.

They're tossing an XBT into the ocean (explained below). The ocean is much rougher here in the 40s.

The ship's rolling and pitching, it's cold and windy, the deck's wet, but...

Overexposed, whoops! It's snowing anyway.

What's able-bodied seaman Joe on the lookout for?

Icebergs! AHh!!! This one looks like Moby Dick.

Some are bigger than others. This one's the size of Muskogee, Oklahoma.

There are endless shades of grey south of 60 degrees. Also, the water is fairly calm there, since it's south of the Antarctic Circumpolar Current. Infinite fetch does not apply.

Let's not forget the scientists... that's George with his alkalinity setup.

The Ocean Data Facility group.

Chris Measures describes the trace metals program; did you know that the amount of iron in the ocean is closely related to the amount of CO2 in the air? It's because phytoplankton need it for photosynthesis (they eat CO2 and poop oxygen with an iron pathway).

JJ and Gene explain the XBT (eXpendable Bathy-Thermograph). It measures temperature and salinity at various depths; the data are used to calibrate the multibeam sonar, which maps the ocean floor. They toss one of these suckers overboard every day.

The yellow thing is an Argo float, which is an autonomous set of sensors that can dive to 2000m, collect data, and transmit via satellite. It's revolutionizing hydrographic data acquisition. The flying thing is a petrel, which looks suspiciously like a flying penguin.

Joe, the second mate, showing off his tattoos. The continent is just off the port side (not visible), and a freezing wind is blowing like crazy. Crazy cold.

Dave, my bunkmate, is a particularly photogenic grad student. He's wearing a Mustang suit, which are toasty bright-orange survival suits for deck work.

This is the first official CTD rosette cast.

CTD casts take a few hours to complete, since it descends thousands of meters and on the way up has to stop periodically to collect water. The sun set while we waited for the first cast to complete... we waited for an effect called a 'green flash,' which is supposed to occur right when the sun hits the horizon, but we didn't see one that day.

The trace metal team has their own rosette for sampling; they have different contamination concerns than the carbon studies group.

This is about as dark as it ever gets this far south... the sun slips under the horizon, slides along for a few hours, then pops back up. Auroras are still visible if you look hard enough.

Captain Dave fishing for Antarctic Toothfish (aka Chilean Sea Bass). He didn't catch anything but he still had fun!

It's cold and colorless here, but there are signs of life (aside from the abundant phytoplankton in every photo of the ocean here).

This was the most charismatic seal I've ever seen in my entire life, and I've seen five.

Sunset is my favorite. I hear dawn's a real eye-catcher, but every time I wake up early for it, it's super cloudy. One of these days...

The Shape of the Iceberg at left reminded me of my favorite building in Cambridge.

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