Foram food

A final thought for 2008 ... and a bold prediction:  I'll think more about this topic in 2009!

A tasty foraminiferan protist?

I work with many clever people. One measure of "cleverness" is the capacity to make quick connections between disparate concepts. Check out Claire Beynon's post at Ice Lines for a good example.

(I wonder if I've been clever enough to figure out what Claire was thinking of ...)

Knew Year Wishes

... as in, the year I knew. To acknowledge the New Year, I'll pictorially summarize some significant stuff 2008 brought (in no particular order).

HAPPY Y2K+9!

InterfaCE III viewed at home before installation at ISOP '08 in Halifax

On stage

InterfaCE I at the Tang (!!!)

Simon Starling's sculpture at Mass MoCA

The mother of all ice storms almost wrecks our house

Katherine Glenday shows me her vessels in NYC

I show Katherine her vessels in Antarctica

Claire and I find flat, easy-to-drill ice (finally!)

For the birds

... as in, "This weather is for the birds!"

It's a good thing my "polar wings" were spread when I landed here. Between the big ice storm last week (no power for 6 days), the recent snow, and now the bitter cold, it's as though Explorers Cove doesn't want to release her grip. 

Some musings today about birds and making images, just to warm the spine:

Finches at the bird feeder during a snowstorm

I've always held a fascination for birds. Winter brings out their best: when it's cold, they puff up their feathers and become animated fuzzballs. Many of their root behaviors - forage and battle for food / attract and battle for mates - become evident in footprints frozen in the snow. The sleuth in me tries to discern these behaviors from their tracks, much as a paleontologist tries to interpret the life of dinosaurs from their prints in fossil mud.

Chickadee tracks in the snow

Frozen footprints and fossil tracks represent hard evidence of reality in the natural world. I find it interesting that photographs were once analogous to these tracks. That's no longer true, thanks to digital imaging and software that allow us to merge images seamlessly. For example, I can show you compelling pictures of Chairman Mao wearing a New Jersey Devils uniform (I hear he was a big ice hockey fan!) or Caroline Kennedy pushing a broom at Wal-Mart (that's what every soccer-mom representative of middle-class America has done, right?). But do such images represent reality? No - they are manifestations of the imagination. What has unlocked our limitless creativity has also shattered our faith in photographic evidence. It's a New Age for creatives ... as well as charlatans and thieves.

There is considerable debate among scientists about how we should use images to report our findings, i.e., to depict the realities of nature. I have touched on this topic in my art/science blog, and it is something that Claire Beynon and I have incorporated in previous work.

Ah, look -- an Adelie penguin has been visiting my bird feeder! For the first time in evolutionary history, penguins have tasted sunflower seeds.

Out of the frying pan ...

...and into the fire. In my case, however, the expression is "out of the freezer and onto the ice."


I left Explorers Cove because it became an icy, slushy mess. Look at the scene here in upstate New York!

Everything is coated with ice due to a freak storm. For the past four days, we've been without electricity ... and heat, and a washing machine, and a TV. It's like camping near the Herbertson Glacier!

Well, not exactly...

Sweet sorrow

The sea ice is getting too sloppy to work on safely -- each step can drop you into a waist-deep pool of melt water. Time to make the last dive, pack camp, and head for home.

It's hard to say goodbye. We had a difficult, weather-abbreviated 2008 field season filled with logistical challenges due to the 10-yr-old ice. But the season was a success: sampling sites were surveyed, specimens were collected, experimental arrays deployed, and art was made. And -- most importantly -- no one was injured in the process.

I'm sure I speak for Molly and Sally when I say that five outstanding people made this season not only possible, but thoroughly enjoyable. Cecil Shin, Shawn Harper, Henry Kaiser, and Steve Clabuesch were an awesome team of divers.

G-093 divers: Cecil, Shawn, Henry, me, and Steve

In addition to dive tending, Claire Beynon worked within and behind the scenes to ensure that things got done and that our voices, visions, and music were heard worldwide.

Claire photographing ice lines

Eight souls aboard Explorers Cove field camp ... eight souls sad to leave it. I'm sure that we will cast long shadows together far into the future.

What we do to amuse

We are often asked "what do you do for fun while in camp?"

The quick answer, at least for me, is "everything!" It seems like there isn't a moment that I'm not enjoying Antarctica, even when working on broken equipment in the freezing cold or toiling to batten down the hatches during a katabatic wind.

There are a few routine things we do as a group that are a lot of fun. Cooking comes to mind, with conversation around the dinner table focusing on animated story-telling. We also show a weekly movie (with popcorn, of course) inside the Jamesway, although it's sometimes difficult to find a film that matches our disparate tastes. This year, it looks like a new activity has been added to our repertoire: "Felting" hats.

Pat Clabuesch (Steve's mom) knitted a red hat for each of us to wear for our group picture. The plan was for us to felt the hats, so that they fit snugly. That turned out to be a problem -- no matter how much we boiled, stirred, and swirled the hats, we just couldn't get them to felt correctly. We still had a lot of fun felting ... and posing for pictures.

Shawn's hat is properly felted (I guess it's now a "cap"). Mine stayed rather floppy. Henry preferred to wear his like a French painter's cap ... or perhaps a Cardinal's headgear, given his prayer-like pose? I don't know for sure.

I do know that we had a lot of fun felting, thanks to Steve's mom.

Split rocks and long shadows

Walks are an important part of field work. We take them often ... it affords an opportunity to ponder this place, collect data, and plan future work. Sometimes we walk to blow off steam.

Claire and I took a final walk along the glacial moraines overlooking Explorers Cove. We were searching for rocks that had been split in half by the weather ... basically, moisture seeps into cracks during the summer, then freezes and expands during winter. Repeated freeze/thaw cycles like this turn rock into sand. We will make a story out of this process, and develop some K-12 education materials together with a dedicated team of teachers.

We cast some long shadows during that walk -- over broken ground and split rocks to reach the sea ice. Our thoughts extended across that frozen ocean...

Water water everywhere and lots of drops to drink

As a biologist, I spend a lot of time studying life in a drop of water ... or sometimes I drop myself into water to study life. On rare occasions I depict life with paint, brush, and watercolor.

People often ask where we get our water at the field camp. We wash dishes, clothes, and (not often enough) our bodies using melted sea ice. When sea water freezes, most of the salt is "squeezed out" in the form of brine as water crystals form. As seen above, these brine channels form "crater star" patterns that are visible on the ice surface. Underwater, they form the ice stalactites that we ponder while doing a safety stop at the end of scuba dives.

Not all the brine drains from sea ice, however, and this brackish water is not suitable to drink. Instead, our potable water is brought in by helicopter from McMurdo Station. We use about 5 gallons a day when there are 7-8 people in camp, but lately we have been visited by many other scientists working in the area. As a result, our outhouse is getting a workout and our drinking water is gone.

Fortunately, there are many snow banks surrounding camp. Snow is, of course, essentially frozen rain. If you collect enough drops you can drink rainwater. Likewise, if you scoop up enough snow and melt it, you have "fresh" water to drink. We boil it first for proper hygiene: Skua Gulls fly overhead, and an occasional penguin waddles thru the snow.

To be honest, melted snow here doesn't taste very good. I hope it's because of all the sand mixed with the snow, and not because of the birds.

A view of above

There are temperate places on Earth where, looking through the forest canopy toward the night sky, one would find in the shadows vines clinging to crenated bark, moss hanging limp from branches, and hints of the heavens piercing heavy, moist air. Tonight, however, an upward glance from our sleeping bags reveals green arches, Jamesway blankets flapping in the wind, and an upside-down wardrobe of layers. Moments ago we were onions of polypropylene leggings and undershirts, silk socks, wool socks, Thinsulate glove liners and Gore-Tex glove shells, wind pants, briefs (not boxers), knickers, hats, gaiters, goggles, a Big Red parka, and bunny boots. Unwashed and unkempt, the outerwear is sprayed with the ocean, their fringes crusted in white. The innerwear is likewise moist, although sweat - being more organic than seawater - thankfully fails to encrust. We inhale dry desert air laden with Taylor Valley dust, and exhale the taste of instant decaf mixed with cocoa. Geologists, biologists, artists, and divers - eight souls on board a tiny camp at the edge of the world.

The layers sway as the Jamesway tosses and turns in the wind. Overhead are the thrashing sounds of flags made by schoolchildren, mounted on bamboo poles now bent by the katabatic wind. Their thrumming warns of danger and spawns thoughts of home. Will cargo straps fail and launch barrels through the tent? Will loves fail and pierce our hearts? We share smiles as our insulation holds, our isolation fades, and our workday is closed by sleep.

We relish a nighttime of sunshine at Explorers Cove, Antarctica. 

Mucking a dive hole

Muck: v. to clean up; especially to clear of manure or filth ...

Merriam-Webster online search

Although there's a difference between ice crystals and manure, the process of slinging debris is the same: Scoop it up, and flick it aside. In these photos, Claire shows how it's done.

First, scoop out dislodged ice using a dip net.

Then drain water from the ice and give it a toss!

Alternatively, you can fling the ice into the air and pull away the dip net. Mucking gives your forearms and shoulders a good workout...

Bay of Wails

How cold is -2C (28F) water? Ask Steve Clabuesch. He was tending the first dive at the Bay of Sails. While preparing to deploy the down line, he got a little too close to the edge of the hole, and "whoooops!" In the drink he went. "Yeeeouch!"

I was back at camp taking a nap, when a tap on my shoulder announced that a helo was returning one of the field members because they fell in the dive hole. That message sent a chill down my spine, too! Fortunately, Steve was fine and I took his place tending the dives.

(photos by Dr. Sally Walker)

Dirty Ice

One goal of our project is to determine the impact of sedimentation on marine organisms along western McMurdo Sound. In a nutshell, large amounts of sediment are blown out of the Taylor Valley onto the sea ice at Explorers Cove; this sediment accumulates on the multi-year ice in the Cove, as seen in the aerial photo below. (Yes, that's what the ice at Explorers Cove looks like from 500 ft. up!)

This massive amount of sediment is ultimately deposited into the sea by various processes. Under certain conditions, we suspect that sediment is episodically dumped onto the seafloor, burying marine organisms in ways that may preserve them as fossils. The results of our studies should provide a better understanding of the fossil record in this region of Antarctica.

Wind-blown sediment accumulates around structures on the sea ice, particularly the various types of cracks that form. These cracks range in size from tiny thermal cracks (seen above) to more massive tide cracks. The sediment grains trapped by these cracks absorb sunlight and help melt the ice. Freeze/thaw cycles and solar radiation, compounded by the multi-year nature of the ice, lead to the beautiful, treacherous ice topologies that our shins, chins, and tailbones are now encountering.

Compare the smooth surface of first-year ice at our Bay-of-Sails camp site (above) to the ten-year-old ice at Explorers Cove.