West Antarctic Traverse

The Antarctic summer has come to an end wrapping up another successful and interesting season.

This year I was working as part of the WAS (West Antarctic Support) Traverse. Operating Tucker Sno-cats and Caterpillar Challenger 55 tractors we assisted in the removal of over 100,000lbs of cargo from Byrd. The cargo had accumulated over the years from previous camps. Buildings, tents, equipment, and field supplies such as tools and flagged bamboo etc. were left on the berm. The plan was to fly much of it back to McMurdo for reissue, however many of the scheduled flights to West Antarctica were cancelled due to mechanical issues, weather, and flight priority changes with other operations on continent. With fewer flights the pressure was on us to haul it all back to WAIS where it could be consolidated and flown out next year.

On November 24^th we boarded an LC-130 Herc and flew from McMurdo to WAIS Divide in the Deep Field. The WAIS camp staff had been there for a few days already and camp was looking good when we arrived. We set up our tents, checked on our gear, and got to work. Our first priority was getting our equipment out of the snow and in working order. Much easier said than done…

An LC-130 Herc loaded up and heading to WAIS Divide field camp

 

A Tucker buried under winter accumulation and drifting

It’s a fact of life out here – over winter the accumulation and drifting buries everything. Berms help, raising things on stilts is better, but there is always a lot of digging to be done come spring! This process was much easier with the D4 bulldozer…but even then it took about a day with equipment and another day by hand and hermie to clean out the crevices and melt out the engine blocks.

After a days work with the D-4 and D-1s (aka shovels)

Once the equipment was cleared of snow we did a complete overview, conducting preventative maintenance measures such as fluid and filter changes. Then it was time to set up the sleds. Modern traverses generally use long sheets of high molecular weight (HMW) plastic to haul cargo and fuel. We use black not only because it’s much harder to lose in the flat white, but also because it absorbs solar radiation creating an ultra thin layer of melt water underneath (much like an ice skate). The overall goal is to reduce friction, thus increasing the mass that can be pulled.

Cargo can be placed directly on top of the HMW, but especially in the cold it doesn’t take much to damage the surface. Once scratched it cannot be used for fuel bladders for fear of damaging the bladders and risking a spill. A scratch is also a weak point and in the extreme cold everything becomes brittle. The HMW flexes and bends quite a lot as it moves over sastrugi, upsetting carefully stacked cargo.

Plastic pallets and vehicles are placed on the HMW while air force pallets are placed on decks. The decks, aka ‘dance floors’ or ARCs (Air Ride Cargo) are wooden platforms supported by air-filled kevlar pontoons. Secured to the HMW they protect the plastic sheets and also provide a stable platform on which cargo can be loaded.

Traverse Tucker 1 with a load of new skiway flags and and arcotherm heater for Byrd

Traverse Tucker 2 with “living module” tent, food, and surival gear

By December 4^th our gear was unearthed and our systems in place. The Challenger 55s required a fair bit of maintenance and repair so we took just the Tucker Sno-Cats on our first two traverses. The Tuckers can pull around 10,000 pounds each so we were limited to just two sheets of HMW. One Tucker pulled our traverse gear (an Arctic Oven tent, food, and survival gear) while the other pulled replacement skiway flags for Byrd and other gear for the WAS Recovery team.

WAIS bid us a grand farewell and we were off. It was just Tyler and I for the first few trips as our mechanic was tasked with getting the Challengers up and running. I have to admit it was exciting, heading off to drive across Antarctica from one camp to another! The whole idea of traversing in Antarctica is exciting and rich with history (as I touched on here:antarcticarctic.wordpress.com/traverses). We were not charting new territory; there have been many traverses between WAIS and Byrd. Nor were we bound to see anything other than flat white and more flat white…no mountains or icebergs or animals (except for a bird or two). Nevertheless, this was my first traverse and I was thrilled!

Leaving WAIS

First stop for the night

We drove all day, planting flags every half-mile so that we could have something other than the GPS to look at and also to help us stay on the same path as subsequent trips would be much easier on a ‘road.’ The visibility dropped and it became disorienting to say the least. Loaded down we could only go 7-10mph and I tried to relax. With nothing else to look at I stared at the little arrow on the GPS. I tried to drive straight…but after a few moments the arrow on the GPS would swing wildly and I realized I’d somehow slipped severely from our course. From the air I’m sure it looked like a random zigzag; a weaving, wavering track from point A to point B. It was easier when the visibility was good, especially once we had old tracks and flags to follow, but even then it was amusing to drive in the rear and watch the lead tractor drift to one side then swing back to the flag and drift to the other. Uneven track tensions, weight distribution, soft snow or sastrugi and the tractor would pull to one side or the other, throwing another variable into the mix. Far more difficult than it would seem!

Beautiful day with perfect surface definition!

A more typical day…

Byrd in sight!

We stopped at 6pm to refuel and chip the ice off the equipment. Dinner was heated in our little propane-powered oven and then we climbed into our unheated sleep kits – fleece liners inside huge sleeping bags nested within bulky over-bags. It was eerily quiet once the equipment was shut off. We had a small 5K generator, but for the most part we didn’t need it. Generators or equipment of some kind is almost always running in even the smallest camps. If the wind isn’t howling you can bet on hearing the roar of the gens. Out in the flat white between camps it was silent…just the tinkling of snow being blown across the surface like crystalline sand on a beach. WAIS and Byrd are only 100miles apart, but at 7-10mph it’s a very long day. We generally took two days to complete the traverse.

Traversing across the flat white is less like a road trip by car and more like motoring across rough water in a skiff. It’s hard to steer straight and in the flat white there’s nothing to steer by. Sometimes the snow is flat and soft, and other times it’s rugged and hard. The HMW flexes and the whole load moves quite a lot. When things are tied too tight straps and HMW break, too loose and things slip and slide around, carefully stacked pallets disintegrate and fall apart. Every few hours we would take a break and a walk around to check the loads and straps.

 

The second trip with the 297

The WAS Recovery crew at Byrd had settled in nicely and had made major progress by the time we arrived. They had the Galley Mod opened up, heated, and in use as the galley and comms area. A yurt-like Arctic Chief tent provided an alternative heated space and an area to dry clothes and hang out, while individual Artic Oven tents were set up for sleeping. We stayed for 4 days grooming the skiway, raising flags, and excavating the berms with the Tucker blades. Then on Dec 10 it was back to WAIS. Two days to get there, a day to PM the Tuckers, unload the cargo from Byrd and load it up for our return trip, a day to shower, do laundry, and rest, and On Dec 14 it was back to Byrd. This time our load included the Caterpillar 297 skid-steerer – a dense little machine at almost 10,000lbs alone!

The Caterpillar Challenger “Drag Queen”

Returning for another load

A full load of cargo

Putting pallets from Byrd up on the WAIS winter berm

The plan was to stay at Byrd for another few days, but as soon as we arrived we received a call on the iridium phone that the Heavy Equipment Operator at WAIS had been injured. So we unloaded our sleds as fast as we could and left early the next morning. WAIS needed us back to keep camp going until they could get a replacement HEO from McMurdo and to train up the new HEOs on operating in the deep field. This time we took only one Tucker, leaving the other at Byrd so they could keep grooming and excavating. Taking turns driving we made it back to WAIS late that evening. At least we didn’t have to worry about it getting dark!

At WAIS Divide we bucketed and pushed snow, forked pallets around, groomed town and the skiway, built pallets, and loaded Hercs. Another Tucker, China Doll (the one we’d had at Byrd in 2012-13) was needed at Shackleton camp. Being most familiar with the machine, I got to drive it onto the Herc! It was fairly exciting as there was no room for error.

“China Doll” loaded onto the herc

WAIS Divide

Pax bags!

Cargo Ops at WAIS Divide

While at WAIS we also got an opportunity to fly out via Twin Otter to help retrieve gear from a small camp at Pirrit Hills. This site is located closer to the base of the peninsula, an area I had never before visited. Mountains appeared on the horizon and then the hills themselves appeared ahead of us. The term “hills” is misleading…it’s an epic, jagged peak rising from the glacier with razor sharp ridges and massive granite faces: Utterly awe-inspiring.

 

The Great Flat White

Pirrit Hills

Loading a snowmobile into the Twin Otter

The Twin Otter

The impressive “hills” rise several thousand feet from the surrounding ice.

We spent two weeks at WAIS helping with camp operations and training up the new Heavy Equipment Operators. On December 31 it was time to leave again. This time we took the Tucker and one of the Challenger 55s. The Challengers can pull 70,000 pounds…7 times as much as the Tuckers. We hooked up three sheets of HMW with a “CRREL tool” and secured several decks for cargo. The New Year found on us halfway between camps, in the great, empty, flat white of West Antarctica.

The Challenger hooked up to a CRREL tool and sleds

Already into January we had our work cut out for us. Almost all the flights to Byrd were cancelled for one reason or another and every flight that cancelled meant more cargo for us to haul back on traverse. We did six traverses in three weeks, using both Challengers and a Tucker, and closed out Byrd on January 17^th leaving just a few of the larger pieces on new tall berms. Byrd has a long history (…link to hx page…) and I’m sure someone will return someday. Perhaps it will be a short seasonal camp again or maybe even the eventual hub for USAP operations in the West Antarctic as it was in the 1970s and 80s. The long legacy of research and infrastructure here unfortunately means that there is quite a lot of buried stuff. Old buildings are certainly scattered beneath the surface and I am sure there is plenty of lost and buried cargo as well…rumors abound telling of lost bull dozers and shipping containers. We had a GPR (ground penetrating radar) unit with us on traverse and scouted around the Byrd area mostly checking to make sure we hadn’t lost anything from this last go around. We didn’t see anything recently buried, but there were plenty of buried items deeper down between 20-60ft. I have no way of knowing exactly what they are and I guess I never will, but it certainly is intriguing!

Returning for another load

Putting the Tuckers to use grooming the skiway

Digging out old cargo at Byrd

Ready to roll

We cleaned up the last of the pallets, sent off the WAS Recovery team via Twin Otter, and headed back on our last trip to WAIS Divide. It was late January by then as we had just a week to clean up and winterize the traverse equipment and gear. Back to McMurdo on Jan 27 and back to beautiful New Zealand on the 30^th!

Leaving WAIS Divide

What is that dark stuff?

Big Blue 155 in McMurdo!

Happy campers

McMurdo or Bust!

WAS Traverse!

Old Man Tucker at Summit (1987)

After a full week of traveling around the world from Greenland to Antarctica I arrived at McMurdo Station on October 23.This year I’m working as part of the WAS (West Antarctic Support) Traverse driving across Marie Byrd Land between WAIS Divide and Byrd camp in the “Deep Field” of West Antarctica. It’s a small endeavor with just 3 of us:  two heavy equipment operators and a mechanic who will stay at WAIS for the season.

The rest of the deep field team is here already: the 2-man crew for Siple Dome camp, the larger WAIS Divide staff, and the 4-person WAS  Recovery team headed out to Byrd camp. For more on the interesting history of Byrd Station check out this Antarctic Sun article from 2009: antarcticsun.usap.gov.

The WAIS-PIG Traverse Tucker (2010 model) at Pine Island Glacier in 2014-15

Once WAIS Divide puts in and gets somewhat settled we’ll fly in to dig out our gear and equipment that wintered there. Meanwhile, the WAS Recovery crew will fly out to Byrd and begin setting up camp and unburying the berm. We’ll stay at WAIS for a few weeks while the machines get thawed out and our sleds set-up with all the gear we’ll bring with us. Then the two of us will load up two Tucker Sno-cats and drive the roughly 100 miles to Byrd. At Byrd we’ll help the WAS Recovery team dig out cargo and camp supplies, rebuild pallets, and load up Hercs with stuff that can fly out. We’ll also be available to haul back loads as needed to WAIS for use, storage, or to be returned to McMurdo. Our season is flexible, we’ll make at least 2 trips, possibly more, using Tuckers and/or Challenger 55s as they get brought up and checked over.
WAIS Divide was established in 2005, as the site of a deep ice core. A decade later it is still in use providing support for several science groups and a population of up to 50. There will be a full galley mod, a designated cook, and a wash tent with showers though we’ll sleep in unheated tents on the polar plateau. Byrd on the other hand will be minimal, much like PIG last year. We’ll have unheated “Arctic Oven” tents, aka AOs, to sleep in, the hard-sided galley mod, and a yurt-like Arctic Chief heated tent as a secondary heated space. The Traverse will be comprised of two pieces of heavy equipment and two mountain tents (2 person 3-season) to sleep in. We’ll take two days, though it’s just 100 miles, so as not to strain the equipment especially while pulling a load. In the heart of the West Antarctic ice sheet the terrain between the two camps isn’t the most exciting: Flat White. Still, I’m looking forward to the experience of driving between camps.

The red star marks roughly the site of WAIS Divide while the yellow is Byrd

We’re not entirely sure what to expect at Byrd. We did a brief trip out there last year to recover some high priority gear needed for groups this season, but that area of the continent gets a fair bit of accumulation so we’re hoping it’s not too buried!

Some photos of WAIS last year:

WAIS Camp: 79° 28.49’ S 112° 4.56’ W and 1797m

And of Byrd last year and three years ago in 2012-13 when I spent a season out there with 2 other women (click here and here for blog posts about that season):

Byrd Camp fully set up in 2012-13: 80° 1.09’ S 119° 35.18’ W and 1533m

Scoured cargo on the Byrd berm in January 2015

A season at Byrd

The Antarctic summer is winding down and the stations are all preparing for winter. The 5 deep field camps (Siple, PIG, WAIS, WISSARD, and Byrd) have been closed  and everyone is back in McMurdo, off travelling the world, or on their way home. It was a challenging season at Byrd, but overall a very good experience. After a beautiful and rejuvenating week of R&R in New Zealand I returned to the ice and spent a week in McMurdo working with the hazardous waste group there (All the Wasties rock – Haz and Solid!). On Februay 11^th, after several weather delays, I flew down to the South Pole. We closed for the winter on Valentines day with 44 souls on station.

A few months ago on November 2, 2012, 6 of us squeezed onto a Kenn Borek Air Basler crammed with food, gear, and a snowmobile and left McMurdo crossing 1,400km into the heart of Marie Byrd Land – Byrd Surface Camp (80°S, 119°W). A C-130 (aka Herc, short for Hercules) with the rest of our supplies and crew was scheduled for the next day, though due to weather, mechanical, and priority changes it was a full 10 days before they left McMurdo.

The satellite picture we saw before heading out (uploaded in a prior post) showed significant drifting along the winter berm, but while there were huge drifts downwind, the upwind side was fairly scoured. Very little was completely buried! We set up our tents just behind the only hard-sided building and got to work. After starting the generator and getting the “galley mod” heated the first big job was digging out the equipment and then I went to work grooming the skiway.

The “put-in” crew!

KBA Basler

It was about a 3hr flight to Byrd, crammed in along with a snowmobile, food, and extra gear

Our initial “tent town” on the backside of the berms – Arctic Ovens. The conical thing to the right is the outhouse.

The galley mod with the 50KW generator and mobile fueling tank. This was after we’d cleared the drifts from around it in preparation for towing it down into town

A buried Challenger 55 – not as bad as it might have been!

Melting out the 2010 Tucker

I spent many hours driving this road…smoothing out the dips and rises, compacting the snow to make a landing strip for the LC-130 Hercs, Baslers, and Twin Otters.

The next 10 days were taxing. Working 7am-midnight, getting used to sleeping in a tent at -20F, lots of digging…we would all crowd into the galley mod for meals, fill some buckets of snow to melt for water, and crash at the end of the day to sleep a few hours before doing it all over again. Once the Herc came the population rose to 20 with the carpenters (carps) and the PIG Traverse crew, and we got busy setting up the rest of camp and getting the traverse ready to go.

The traverse didn’t leave until November 28th so everyone was there for Thanks Giving. We took the day off, rearranged the galley to make one huge table, and had quite the feast. Tara did most of the cooking throughout the season, but for the big meal we had a lot of volunteers. Even without freshies (all our food was either frozen or canned) we put together a delicious and impressive spread. Two turkeys, stuffing, rosemary mashed potatoes, yams with caramelized pecans, green beans with almond béchamel, chipotle-jack cornbread, spiced cranberry sauce, and honey-soy tofu. There were several bottles of wine and delicious dark chocolate pecan, strawberry-rhubarb, and pumpkin pies for dessert.

Thanks Giving at Byrd! With the PIGs, Carps, and Byrds…(Photo by Abby)

Fresh homemade strawberry-rhubarb, chocolate pecan, and pumpkin pies! (with hard-sauce and meringue kisses…)

Abby and Tara enjoying a break from cooking

While they were at Byrd the carp crew was kept busy setting up the sleds and structures for the PIG Traverse and the large tents for Byrd Camp: a Jamesway for the mechanics, a smaller “Rac-tent” (kind of a modern Jamesway) for science/rec, a 40ft of Rac-tent extension on the Galley, a little blue “polar haven” tent, and 3 outhouses.

Putting finishing touches on the galley mod extension as the winds picked up

On November 28^th the PIG Traverse left for WAIS Divide, taking the carps with them. Then there were four: Abby, Tara, the mechanic Toby, and myself.

The PIG traverse and their carp pax

And then they were off…heading to WAIS and onto PIG – leaving just four of us behind.

As the Heavy Equipment Operator I worked at keeping the skiway groomed and got lots of practice pushing snow with the 931 bucket. Both Abby and Tara got in the equipment to help groom and Tara even got some experience pushing snow.

The good old CAT 931 “Happy Camper” which we dubbed “Leo” – when I wasn’t grooming the skiway I was pushing snow with this guy…

Me clearing some of the drifts around the galley with Leo (Photo by our mechanic Nate)

Our CAT Challenger 55 “Drag Queen” grooming the skiway

The 1990 Sno-cat Tucker “Jethro” with it’s sweet old Detroit engine sounds a bit like an airplane

Jethro at work

Several big storms from mid November to mid December left us well buried with monster drifts nearly as large as the Jamesways! On November 20th we had sustained wind speeds of 30 knots, with a peak gust of 36kt! I spent days on end after each storm pushing snow away from camp. On the polar plateau there is little to slow or stop the constant wind. There were a few calm days, but for the most part it stayed around 10-20 knots. MUCH more wind and drifting than at the South Pole!  The temps however were remarkably warm. For a few weeks in mid-summer it was averaging 10-20F! Our warmest day was 28F (-2C!) while our coldest was -34F (-29C)…

West Antarctic storm – The flag line to Tent City…the closest tents barely visible (my tent was to the left, past the dark box that was the outhouse)

The science tent and the galley

Climbing the drift to get to the Galley after two days of storm…note the drift is as high as the galley roof

Finally the winds let up and the sun broke through to show the extent of the drifting. At it’s worst we couldn’t see more than 10 ft so we set up rope lines to follow

We had a few Hercs in December, one to bring in a carpenter and another mechanic to help with some big projects. A week later a Twin Otter came in to pull them and our original mechanic Toby back to McMurdo for Christmas. For a full 3 hours it was just the three of us girls – Tara, Abby, and I – before a second Twin Otter flew in to bring us our second main mechanic, Nate.

Loading up the first Twin Otter – Kenn Borek Air

The second Twin Otter, of the British Antarctic Survey (BAS)

A pretty sweet plane

The next three weeks were quiet. We groomed the skiway, pushed snow, watched movies in the Science/Rec tent, cooked, and went through the pallets of material that had accumulated over the past several years. We built and sent out 29 pallets back to McMurdo over the entire season.

Mail! and ziplocks and new gloves…

Me loading a Herc with Leo (Photo by Denene)

The skiway freshly groomed

Life at Byrd was calm. Our primary purpose was to maintain camp as a back-up refueling stop for Hercs flying to PIG and wait until the grantee group arrived, scheduled to arrive on January 9^th. While on some level it was quite a modern camp – with Iridium satellite phones, modern industrial kitchen set-up, weather monitoring equipment, and heavy equipment to work with, at other times it felt like Little House on the Prairie…or Little Camp on the Flat White.

Abby calling a Herc about an hour away on the HF radio

Tara making the arduous task of raising the skiway flags look easy…

One of our few deliveries of freshies! There is nothing better for morale in Antarctica than freshies and mail.

Calm or storm all our water was shoveled by hand, carried inside, melted with electric heating elements, and stored in a large reservoir tank.

Rising sourdough next to the AN-8 burning KUMA stoves

Fresh sour dough bread!

Laundry! We washed our clothes by hand in the tin pails shown. It would take only a few hours to melt and warm a pail of snow on the stove.

Bathing in a new fuel containment berm with a scoop and a bucket of warm water. When it was just the four of us we set up a solar shower in the “Science” tent which we filled with water warmed on the KUMA stove. The bathing process was fairly time intensive even after we got it dialed…we all bathed once a week or two, the good part being there really isn’t any dirt out there and little cause to sweat.

Home sweet home. We each got our own Arctic Oven tent to sleep in for the season. While they were unheated, during the warmer days it got above freezing inside from solar insolation. Not too bad until the wind picked up.

Everything at Byrd ran on AN-8 jet fuel – the equipment, generators, Hercs, Twin Otters, Baslers, and heating stoves. Twice a week we would hook up the ~220gal fuel tank, top it off from one of the four 10,000gal bladders, and fill the smaller tanks at each building.

Tara fueling the 20K generator on a blustery day

Finally, after more weather delays, on January 16^th the Grantees arrived! Our population jumped from 4 to 21 overnight and we switched from quietly maintaining, to a full on camp with science, flights, cargo, big projects and small. It was a challenging transition, and hard for me to stay present with R&R dates changing and the Pole winter looming nearer.

The GIMBLE group’s Basler

Inside the Basler – packed with geophysical equipment

With the larger population we were able to get some big projects done – such as digging out and tearing down two of our four fuel bladders to be returned to McMurdo and taking apart our Challenger Drag Queen, as the transmission had seized in late December.

Many hands make light work shoveling out bladders!

Once the bladder was clear of snow we folded it up and packaged it onto a pallet

Drag Queen ready to return to McMurdo

Loading the Challenger onto the Herc

Finally on January 25^th, after 85 days at Byrd, I loaded the herc – parked the 931 loader, jumped out, hugged Abby and Tara goodbye and ran to the plane! The crew was very nice and they waved me up to the cockpit for the ride back to McMurdo – even letting me call back to Byrd on their radio to say good bye and report the condition of the skiway and some damaged markers. I was a little sad to leave early (they didn’t close camp fully until the first week of February), but also very excited about everything to come – a week of R&R in New Zealand and South Pole winter 2013…

“Oh give me a wildness whose glance no civilization can endure…” Thoreau

“Yonder all before us lie deserts of vast eternity.” Edward Abby

“For a while again, I remember the health of self-forgetfulness, looking out into the sky. Black woods wintry on the hill. And I know, this is one of those moments between heaven and earth, from which even I can step forth and from myself, be free.”

Some of my favorite, and classier, outhouse graffiti

Town proper from atop the berms – the skiway/bladders are off to the left, tent city is on the right. You can just make out the three yellow Arctic Oven tents for Myself, Tara, and Abby.