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Displaying items by tag: United States of America
Monday, 24 December 2007 00:43
Means of navigation have changed dramatically
Written 23 Dec 2007
3668 meters above sea level
Maximum & Minimum temperatures: - 31 to - 38 °C
An antenna on the roof of each of our vehicles continuously receives signals from several of the twenty-odd satellites of the Global Positioning System (GPS). The time-coded radio signals from the satellites allow for very accurate distance measurements relative to the known positions of the satellites, and thus the position of the vehicles can be calculated instantly with an accuracy of a few meters. A screen shows the driver the bearing and exact distance to the point of destination. Aided by this tool, we can head for a chosen point ahead, perhaps a previous observation site marked by a single aluminum pole, and hit it spot on even after hundreds of kilometers' ...
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Sunday, 23 December 2007 15:10
Discovering a historic Plateau Station
Written 22 Dec 2007
3670 meters above sea level
Maximum & Minimum temperatures: - 28 to - 36 °C
With general coordinates of the abandoned station determined by satellite images of the long-buried packed snow runway, today we stopped at Plateau Station. This was the site of a US science camp from 1966-69, but had not been occupied or visited by any US field team since then.
No one could tell us what evidence of the abandoned station may still exist above the drifting snow. Immediately visible upon our arrival was the tall meteorological tower, still standing solidly above five smaller towers and the top of a flag mast. To our delight, on closer inspection, also immediately visible at snow level was the clear dome of the aurora tower and the top ...
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Saturday, 22 December 2007 16:35
Firn quake
Written 21 December 2007
3619 meters above sea level
Maximum & Minimum temperatures: -27 to -36 °C
One morning everybody woke up at Plateau Station due to a dramatic sound that appeared to be traveling through the camp. This was a very scary episode for the personnel that did not know what had happened. After the noise had died down, they realized that it had been a firn quake. In very cold conditions large snow crystals grow and they are very loosely bonded. Thus, this weak layer in the snow can suddenly collapse. The personnel at Plateau Station figured that the surface lowered about 1 cm duri...
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Saturday, 22 December 2007 04:33
TARANTELLA update 2007
Terrestrial ecosystems in ARctic and ANTarctic: Effects of UV Light, Liquefying ice, and Ascending temperatures. (TARANTELLA, IPY project no. 59)
IPY project page
TARENTELLA website
Predicted changes in climate and ozone concentrations in Polar regions, make it critically important to understand how changes in key environmental factors influence Polar terrestrial ecosystems via the modification of their individual but interconnected components.
Observational and experimental research on the effect of climate change and ozone depletion is affiliated to international research programmes to t...
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News And Announcements
Saturday, 22 December 2007 01:34
Norway-US Antarctic Traverse: Two reasons for celebrating
Written 20 December 2007
3619 meters above sea level
Maximum & Minimum temperatures: -29 to -36 °C
Today, at the traditional Christmas lunch at the Norwegian Polar Institute, Einar received the price “The Employer of the Year.” Congratulations Einar! It is very well deserved. The nomination committee especially emphasized Einar’s efforts on numerous expeditions in the Arctic and in Antarctica.
Einar is going to celebrate his seventh Christmas in eight years in Antarctica in a few days. Also, his high standards for field safety and work for the union were highlighted by the committee....
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Thursday, 20 December 2007 18:57
Norway-US Traverse: 2nd deep drill hole is well underway
Written 19 Dec 2007
3619 meters above sea level
Maximum & Minimum temperatures: -25 to -35°C
No doubt, this ice core has really challenged us. We started drilling last Saturday and have encountered a series of problems since then. Today, however, it seems like we reached a turning point. The optimism is back in the hard-working drilling team and maybe by tomorrow the second 90 meter ice core is retrieved.
Today, we also took part (by satellite phone) in a press seminar in connection with the visit of Norwegian Prime Minister Jens Stoltenberg to Troll Station in January 2008.
...
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Thursday, 20 December 2007 18:45
IPY Speaker Series in Nome
As part of International Polar Year (IPY) 2007-2009 the University of Alaska Fairbanks Marine Advisory Program and Northwest campus are hosting a speaker series in Nome, Alaska. This series is meant to facilitate discussions of current polar issues between local residents and academic experts.
Topics will range from the effects of climate change on fisheries and the sea ice pack, to storm systems and coastal erosion, to preservation of Native languages and art. Despite the importance of many of these topics in our region, experts rarely have an opportunity to interact with local residents because of the remote location of these communities and limited communication systems.
The potential for this series to reach rural residents is vastly expanded because ...
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News And Announcements
Wednesday, 19 December 2007 17:46
Norway-US Traverse: Test flight of the UAV
Written 18 December, 2007
3619 meters above sea level
Maximum & Minimum temperatures: -22 to -32 °C
All cameras were pointed towards the unmanned aerial vehicle (UAV) launcher when Stian made his first test flight today. The UAV carries one C-band radar, temperature and pressure sensors, a digital camera and a GPS. The C-band radar is similar to the ones on satellites and to the one we have mounted on one of the vehicles. Thus, data from these three different platforms will be compared. The camera can be used for route planning and crevasse detection. Some modifications will be made before the first long ...
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Tuesday, 18 December 2007 22:31
Norway-US Antarctic Traverse: Visited by a Basler aircraft
Written 17 Dec 2007
3619 meters above sea level
Maximum & Minimum temperatures: -22 to -36°C
The medical doctor at Troll paid us a visit today to inspect the wounded finger of our chief driller. In addition, we were supplied with spare parts for the vehicles.
The doctor inspected the wounded finger and put the chief driller on medication to prevent further inflammation. She is doing fine but is not allowed to use her right hand in order for the wound to heal. The remaining part of the drill team has currently reached to a depth of 50 meters.
The Basler also carried spare parts for our vehicles, in particular two transfer boxes, one differential and hydraulic oil. Shallow coring was completed and Stian prepared for flying the dron...
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Tuesday, 18 December 2007 13:54
Studying Sun Shadows Around the World
Two eighth-grade students at James Monroe Middle School in Albuquerque, New Mexico are collaborating with staff at several Antarctic stations including; the Amundsen-Scott South Pole and Palmer Stations to measure shadows. By comparing the length of shadow the sun casts from a one-meter stick at solar noon measured at locations experiencing either winter or austral summer these students are testing the "longer shadows in the winter and shorter shadows in the summer" understanding.
Students have also arranged for several snapshot winter readings to be taken across the continental United States on solstice. Measurements h...
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