Thursday, February 19, 2009

Lake Tekapo

On my way to the Mount Cook region, I stopped at Lake Tekapo. The Lake is a beautiful turquoise color. The color comes from the mica originating in the glacier runoff that feeds into the lake.

This is the Church of the Good Shepherd

This dam is part of a hydroelectric power station

Cool clouds over the mountains

If you are wondering where on the island everything is located, I have tracked my route on Google Maps. See the following link.

http://www.gmap-pedometer.com/?r=2571939

Driving in New Zealand

Here is my wonderful little car. I think that it was a Toyota Vista. The interesting part of driving in New Zealand is driving on the left side of the road, riding on the right side of the car and having the manual shifter be the same as we use in the US. It took about a day, but I eventually got used to it.

Saturday, February 14, 2009

Extra Pics

Here are some extra pics from Antarctica before I move onto the New Zealand trip.

We do use fall protection (at least when it is not packed away in our WAIS cargo)

Snow drift at WAIS


Views from the C130 flight down to Antarctica


Warming up the ski doo before the obstacle course

The MASH replica of the HF radio (I actually saw one of these in a museum in New Zealand as an example of how people "used" to communicate - I just chuckled to myself)

The Christmas lights antennae for the HF radio

The C17 that flew me back to New Zealand

Sunday, February 8, 2009

Back to New Zealand

After a few days of delays I made it back to New Zealand last night. I'm excited to start my trip around the South Island. It is warm, humid and wonderful! I will write more and add more pictures when I get a chance.

Miss you all!
Melis

Friday, February 6, 2009

WAIS Ice Core Drilling

While out at WAIS Shelley and I had the opportunity to tour the ice core drilling operation. The logistics around a project like this are quite impressive. The project is attempting to recover about 3 km of ice. This will allow the scientists to analyze the climate of this region back to about 100,000 years before present. This season the team was able to reach down to about 1.5 km. This was a critical season because the team was drilling through the brittle ice portion of the core. The ice is very fragile in this region. Additionally, the pressure of the air bubbles inside of the ice is higher than the surrounding air pressure. This causes some difficulties, because if the ice cores are not handled correctly the core can explode. Therefore the ice cores are stored in the "freezer" at WAIS for a year in order to for the ice to relax before being transported. The first picture below shows the ice core samples stored for the winter over season. The second pictures shows you the "freezer" that the cores are stored in. It is literally a whole dug in the snow.



Here is the project website if you are interested.

http://www.waisdivide.unh.edu/

Antarctic Phenomenon

Fata Morgana


Fata morgana is a mirage caused by an atmospheric inversion (cold air near the surface with warmer air aloft). The interface between the warmer and colder air acts as a refracting lens producing an upside-down image. In the first picture the black blob in the middle is usually just a small rock that can be seen across the ice. The fata morgana is more difficult to see in the second picture, but you might be able to pick out the fact that the bottom of Mt Discovery is looking a little strange.

John explained to me that the early explorers would see this effect on large pieces of sea ice. Due to the optical illusion, it would look like entire ice cities existed on top of the sea ice.


Diamond Dust

One day Shelley and I were walking over to the galley for lunch and I thought that I was seeing stars. I could see small burst of light in the sky right next to my eye. It was like the sky was twinkling. The phenomenon is called clear sky precipitation, aka Diamond Dust. This usually occurs when an inversion exists (the atmosphere is colder near the surface and warmer aloft). As the warmer air from aloft, which usually carries some moisture, mixes with the colder air near the surface the moisture freezes. This causes tiny ice crystals which sparkle in the sunshine.

The Ice Pier


This is a picture of the fuel tanker docked at the ice pier. To the right of the ship you can see the ice pier. It is a large piece of ice cut out of the sea ice. The piece of ice is moved into position and then covered with dirt in order to keep it from melting. I thought that it was an interesting and creative solution to building a pier large enough for this vessel and the heavy machinery necessary to unload the cargo.

Tuesday, February 3, 2009

Sabrina and Lettau

On Monday Shelley and I flew out on the Twin Otter to the Sabrina and Lettau sites. The flight out to Sabrina is a beautiful one. We had to stop at the Moody Glacier fuel cache to refuel during the 4.5 hour flight. The cache is in the mountains and there are wonderful views of the mountains and glaciers along the way. This made Monday my favorite day on the ice. I just kept thinking that people would pay thousands of dollars to be on a flight like this.

Here is a picture of the fuel cache. It is literally a pile of 50 gallon barrels of fuel.


The Sabrina site was a new installation and it was satisfying doing the work to get an AWS built out in the field. The new site is named for John and Liz's daughter who will be born in March. Since no one had been to the area before, we had a mountaineer with in case the area contained crevasses. Luckly for us, the area was clear and solid. Each season a Traverse of people, cargo, goods and supplies travels over land from McMurdo to the South Pole. It was amazing, because from the plane we could still see the scar in the ice where they had traveled through the area back in December. Unfortuantely, I do not have any pictures of the site. I will need to get copies from Shelley before I leave McMurdo.

At Lettau, Shelley and I just rebooted the electronics box. For some reason it had clicked off the air. After the reboot, it worked just fine.

Since this was my favorite day, I have splurged and uploaded quite a few pictures below. I hope that you enjoy.