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From the Did you know series
The Giant Mine is a gold mine located next to Yellowknife in the NWT. The gold is associated with a mineral called arsenopyrite and during the extraction process arsenic vapours and sulphur dioxide are released. From 1949-1951 these were released into the air, until an underground chamber was constructed in the 1950s. Since then the mine has stored 237,000 tonnes of highly toxic arsenic trioxide dust in a network of large underground chambers that are surrounded by discontinuous permafrost. With warming climatic conditions and site disturbance the permafrost is now degrading. Some of the chambers are as big as a 10 story building. Without remediation, the dust could release 12,000 kg of arsenic per year into groundwater.
The Giant Mine Remediation Project plans to surround the contaminated chambers with freeze pipes and thermosyphons designed to create a "frozen block" around the chambers. The "Frozen Block Method" will both actively and passively freeze the rock surrounding these chambers such that the arsenic is contained. The owners, Royal Oak Mines, went bankrupt in 1999 and the remediation has been the responsibility of Aboriginal Affairs and Northern Development Canada.
For more information:
http://www.aadnc-aandc.gc.ca/eng/1100100027364/1100100027365
http://northernadaptation.ca/sites/default/files/2_giant_mine_arsenic_remediation_-_mikes.pdf
This "Did you know" note was prepared by Alexandre Bevington
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Did you know that there were five main ships involved in the Canadian Arctic Expedition? They were the ex-whaler named Karluk, and 4 schooners Mary Sachs, North Star, Polar bear and Alaska.
For more information about these vessels see: http://www.civilization.ca/cmc/exhibitions/hist/cae/nav70e.shtml
Bonjour à tous!
La réunion scientifique d'ArcticNet approche à grand pas, en anticipation de la semaine nous vous offrons un fait saillant de la science polaire canadienne :
Saviez-vous que cinq navires étaient impliqués dans l'Expédition canadienne dans l'Arctique. Ils étaient l'ancien baleinier Karluk, et quatregoélettes Mary Sachs, North Star, Polar Bear et Alaska.
Pour plus d'informations sur les navires, visitez le lien suivant: http://www.civilization.ca/cmc/exhibitions/hist/cae/nav70f.shtml
Cette capsule «Le saviez-vous" vous a été présentée par Ann Balasubramaniam
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A Data Sharing Model from the IASOA Consortium: The Scientist-Centered Approach
By Sandy Starkweather
When: December 3,3:00 pm Est Time
Webinar registration link: https://www1.gotomeeting.com/register/533427889
Webinar ID: 533427889 + https://www2.gotomeeting.com/island/login.tmpl
What the Meta with other peoples' Data? If you have had problems finding the data you need or effectively using the data you find, this webinar is for you. The International Arctic Systems for Observing the Atmosphere (IASOA) has listened closely to its science community to design an effective data access portal for flagship Arctic atmospheric observatories. This portal uses a transparent place-based inventory of datasets from observatories around the Arctic, organized in terms our community understands. We aim for the fewest clicks possible between our search engine and real data files. Our approach to capturing dataset documentation (Metadata) is interoperable with relevant global archives and emphasizes non-duplication. Even if you are not an atmospheric scientist, you will benefit from learning about this scientist-centered approach to effective dataset discovery and use. Our system is constantly evolving. Please join us and share your data searching pet peeves with us!
This work was jointly funded by the U.S. National Science Foundation and the U.S. National Oceanic and Atmospheric Administration.
Sandy Starkweather
Sandy is the Implementation Scientist for IASOA. She applies her joint background in Arctic climatology and organizational management towards launching strategic initiatives and to best utilize Arctic observations and bring researchers together in collaborative endeavors. Sandy spent 11 years conducting field work and managing field projects in Greenland, largely at Summit Station. She too used to quiver at the word "metadata".
