11 January 2019 Am I In The Dry Valleys Or Mars?

Yesterday's Helicopter Ride From McMurdo To The Dry Valleys

Walk through dry valleyA walk in the Dry Valleys of Antarctica feels what I'd imagine a walk on Mars might be like.

Camp at Lake FryxellThis is our camp at Lake Fryxell. This picture was taken at 2am on my way to bed. My tent is the one on the right.

Hike to pondWe had a 3-mile hike this morning to get to Many Glaciers Pond, where we would be conducting our the P3 experiment.

Many Glacier PondMany Glaciers Pond which is in the Taylor Valley of the Dry Valleys of Antarctica. This is the site of our P3 experiment.

The P3 Experiment Explained Clearly

P3 stands for the "Pulse Press Project". We are simulating permafrost melting to see the effects of microbes in the soil. The "Pulse" in the experiment is simulating a large change in the ecosystem. This plot gets water treatment every other year. It could be something like a hurricane. The "Press" is the gradual change that is happening. This is like climate change. This plot gets water treatment every year. The basic steps to this experiment include: pump water from the pond up into the large black tank at the top of the hill (like in the picture you see above), and use gravity to fill troughs dug into the side of the hill, above the plot to be studied.

3P Hypothesis

Dr. Byron Adams explains the P3 experiment hypothesis as follows: "In addition to looking at how this affects the microbes in the soil, we think it first affects the soil chemistry (mobilizes salts and nutrients, as well as biota, moves them around, mixes them, makes the soil more homogenous), which then affects the microbes (like bacteria), which then influence higher trophic groups, like nematodes and tardigrades."

Water TankOur P3 site. Water is pumped from the pond, up to that water tank, purified, and put back onto the soil to simulate permafrost melting so see how the microscopic animals respond.

WateringWatering the troughs in our P3 experiment plot area.

So why pump it up the hill, just to run it back down into the troughs? Well, prior to pouring the water into the troughs, it is sterilized using UV light so we would not be introducing organisms from the pond into our plots to study.

UV Water FilterThis is our UV water filter. We sterilize the pond water prior to application to our plot so we will not introduce pond microbes into the soil. This is adding one more "Controlled Variable" to our experiment.

The troughs are dug about 10 cm into the "active soil" (soil not frozen) down to the permafrost. Water then runs along the top of the permafrost, through the active layer, back into the pond. We then make observations in the plot receiving the water treatment. We took soils samples that will be taken back to McMurdo to check for nematodes and tardigrades. Soil temperature, salinity, and water content is also being monitored. We will return tomorrow to repeat the water treatments to the plots.

Hike to Commonwealth Glacier

Once the troughs were filled with water, we had an hour or so for that water to soak into the soil before we could add another treatment. I took advantage of this spare hour and took a run for the Commonwealth Glacier.

Hike to CommonwealthI am about halfway to the Commonwealth Glacier, which is in the background. Notice the flowing stream behind me I had to cross. The headwall of the Commonwealth is about 30 meters high. Commonwealth HeadwallThis is the headwall (end of) the Commonwealth Glacier. This wall is about 30 meters. You don't want to get too close to this because big blocks of ice, known as seracs continually peel off the end of this and tumble down.

Ice FormationsIce formations at the bottom of the Commonwealth Glacier. Commonwealth GlacierMore scenery from the Commonwealth Glacier.

Lake Fryxell Hut "Family Time" and Tasty Dinner

Lake Fyxell Camp HutWe had a great dinner made by Dr. Jeb Barratt. He made us curry scallops and lentils. We meet in this hut, made plans for the day, use the microscope if needed, visit, and then head out to our tents to sleep. Notice the sun shining through the windows during our late night dinner.

Comments

9th grade student
Guest's picture
Lucky!

While you get to do cool Antarctic scientific research, we get to "train" termites...which you know both are cool.

Training termites!! Holy cow,

Training termites!! Holy cow, that sounds awesome. You'll have to show me how to do that. Enjoy.

Ryatt
Guest's picture
Body Clock

When you were eating dinner, did you feel as though the day wasn't even close to over yet? Or has your body already adapted to the constant sunlight?

Awesome question Ryatt. It's

Awesome question Ryatt. It's super weird for sure, but to tell you the truth, I am ready for dinner all the time. Where it catches up with me is after dinner, while we are visiting about plans for the next day, sun shining brightly, and then we all realize it's midnight and we need to be up in just a few hours. I seem to be doing fine with just a few hours of sleep each day. Thanks for the question Ryatt.

Mike Hartzell
Guest's picture
Congratulations Kevin Dickerson

Just wanted to wish you good luck in your research in that far away land. You make AF and PG proud!!!!

Thanks Mike. Awesome of you

Thanks Mike. Awesome of you to say that. Thanks for checking in.

Team Member

Kevin Dickerson's picture

Journal Details

Location: Many Glacier Pond
Coordinates:
Latitude: 77° 35' 49.2" N
Longitude: 163° 19' 19.2" E
Weather Summary: Partly Cloudy
Temperature: 27
Wind Speed: 10

Dry Valleys Ecosystem Study Journals

Ask the Team