All posts by jwanetick

Digging Holes at Castle Rock

Friday, 3 November 2015

Anja and Jerry drove out on the Castle Rock loop road with Paul Carpenter, Chief Engineer at PASSCAL, to their test “facility” today to install a couple of seismometers for testing and burn-in. PASSCAL (Portable Array Seismic Studies of the Continental Lithosphere) is the group from New Mexico who are providing the seismometers and data loggers that we’re using on this project. Their test facility consists of an insulated storage van, which was almost as cold inside as out, just off the loop road on the way to Castle Rock, on a rise above the Ross Ice Shelf; very cold and windy there. We drove out to the site in a Mattrack, a Ford F250 with tracks replacing the wheels. (I’d like to see this thing in a Monster Truck Rally.)

Installing the instrument involved:

  1. Digging a couple of holes in the ice about 4’x4′ by 4′ deep.
  2. Leveling the bottom of the hole and placing a piece of 1’x1′ ceramic tile backed with 3″ of syntactic foam for insulation, which provides a hard, level surface to set the cylindrical instrument on.
  3. make sure that the seismo is aligned to true north (declination here at McMurdo is 144°E)
  4. then  fill in the hole, burying the instrument for a few days.

As you can see from the photos and short video below, we had a hell of a blow, and it was REALLY cold. When the door of the van opened, snow blew in and didn’t melt. We had to keep sweeping it up and throwing it out the door, not unlike sand in the desert blowing in through an open door or window. Strange.

Castle Rock in the Distance
Castle Rock in the Distance

 

Arrival at the calibration facility
Arrival at the calibration facility

It was blowing!

Digging it!
Digging it!
Seismometer in place, level, aligned to True North, and ready for burial
Seismometer in place, level, aligned to True North, and ready for burial
Paul (PASSCAL) readying the instruments
Paul (PASSCAL) readying the instruments

19

Toe Warmers are your good friends on days like this (but they don't really last 6+ hours; more like 2 hours, maybe)
Toe Warmers are your good friends on days like this (but they don’t really last 6+ hours; more like 2 hours, maybe)
Ahhhhhhhh
Ahhhhhhhh

Shakedown (née Happy Camper), Day 1

Nov. 3, 2015:  Just returned from our two-day survival “Shakedown,” (It used to be called Happy “Camper,” for some unknown reason). This course is a two-day (one-night) course in surviving on the Ice while awaiting rescue. This course is required of all groups heading out into the “deep field” camps.

It started out with a two-hour lecture at the Science Support Center (SSC) here at McMurdo, where two Mountaineers (they’re now called “Field Safety Coordinators”) went over principles of surviving out on the ice for a few days while awaiting rescue. This included: building a snow kitchen (1/2 igloo to act as a wind screen), how to melt water on a camp stove (a little more complicated than it sounds, but not a whole lot more), and how to pitch a tent in high winds and blowing snow (both of which we experienced when we went out for the field portion of the training).

After our lecture, we loaded the Hagglund for our trip out onto the Ice.

IMG_2207
Loading Hagglund before heading out to camp

 

IMG_2211
Dean and Anja in the Hagglund

 

IMG_2212
Zhao

 

IMG_2213
Jerry

Passing Scott’s Base (Kiwi base between McM and the ‘Transition” where the sea ice meets the Ross Island, we headed out towards Willie’s field (the smaller of the two airstrips at MCM) and then hung a left and went “offroad” for about one kilometer to the Happy Camper camp site.

IMG_2220
Unloading at camp site

Setting up camp

After laying out our tent line, 90° from the road, we started setting up camp. As soon as we started setting up the tents, the wind picked up and it was pretty blustery. It was as if the mountaineers had ordered the wind for us at just the right time, to make the training exercise very “real world.”

IMG_2221

IMG_2224

IMG_2226
Staking tent and rainfly

Note the bamboo stakes. The snow was the right consistency for staking vertically, rather than using horizontal “deadman” stakes on the rainfly guys, as one would typically use on the Ice. Also, we used every possible stake point and guy because, as stated earlier, the wind was howling. Also note the snow fillets we’ve built up around the tents. This is to keep the loose, wind blown snow from filtering in between the rainfly and the tent itself. (Rainfly is a bit of misnomer, since it never rains here. The fly is more about adding an additional layer of insulation to the tent itself.)

After the tents were up and our gear stowed inside them, we began building our kitchen and its accompanying wind wall. Building the kitchen consisted of sticking a large toothed saw into the snow and sawing two parallel straight lines about one foot apart and about five feet in length. Then sawing lines one foot apart, connecting the two parallel lines to form blocks about one foot square. Then insert a square edged shovel into the first short line, and start prying blocks up out of the snow. The resulting blocks were pretty light, and had the feel and sound of Styrofoam blocks (they squeaked when you rubbed them together). Thus, the floor of our kitchen served as the quarry for our ice block wind walls.

IMG_2240
Sawing block for our kitchen wind screen

 

IMG_2242
Shelf for stove

We continued to excavate the blocks from the floor of our kitchen until we had a shelf at just the right height to set our stove on, and a bench for everyone to sit on and eat.

IMG_2244
Making our cooking area

Melting snow to make water takes a bit of time, and you have to be careful not to burn it. Yep, burn it. If you try to melt the snow without “seeding” the pan with some water at the bottom, the microscopic dust particles suspended in the snow can burn and really stink up the pan.

IMG_2247
Melting snow for water to cook our freeze-dried food with
IMG_2257
Mmmm, expired Mac & Cheese and “Roma Pasta” out of a bag

Ah, the fruits of our labors…

DRIS 2015 – Getting There

San Diego -> Los Angeles -> Sydney -> Christchurch, NZ (25 hours of flying)

Made it to Christchurch and the next morning arrived at the US Antarctic Program (USAP) offices for a preliminary briefing (only one of many to come) and to be outfitted with our ECW (Extreme Cold Weather) gear at the Clothing Distribution Center (CDC) in a small office with locker rooms at the USAP Center.

Springtime in the Southern Hemisphere
Springtime in the Southern Hemisphere

IMG_1964

Bromirski and Wanetick at the CDC
Bromirski and Wanetick at the CDC

Bound for McMurdo Station, Antarctica the following day. We boarded a C17 transport plane and shared our seats with a search and rescue helicopter headed for the New Zealand (Scott) Base on the other side of Ross Island from McMurdo. We’re sitting on the starboard side of the plane (left side of the photo) towards the tail of the plane.

We're sitting on the starboard side of the plane (left side of the photo) towards tail (you can see Anja's light blue jacket near the helicopter)
We’re sitting on the starboard side of the plane (left side of the photo) towards tail (you can see Anja’s light blue jacket near the helicopter)
Lots of leg room on this flight
Lots of leg room on this flight
C17 landed at Pegasus Field, McMurdo Station
C17 landed at Pegasus Field, McMurdo Station
Dr. Bromirski, in full ECW, disembarks and is ready to wrangle some data
Dr. Bromirski, in full ECW, disembarks and is ready to wrangle some data