BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Anatomy of ice cores: continuous-flow chemical analysis of polar i
 ce cores - Dr. Ailsa Benton (British Antarctic Survey)
DTSTART:20120116T141500Z
DTEND:20120116T153000Z
UID:TALK34472@talks.cam.ac.uk
CONTACT:Dr Alex Archibald
DESCRIPTION:Investigations into contaminants in snow and ice from Greenlan
 d and Antarctica have shown changes in temperature\, atmospheric circulati
 on\, and physical and chemical composition of the atmosphere over sub-annu
 al to millennial timescales. Chemical proxies can reveal geophysical manif
 estations of climate such as sea ice extent and changes in pollutant sourc
 es and sinks.\n\nIn this talk I will introduce the continuous flow analysi
 s (CFA) system developed at BAS which is used for determining high resolut
 ion physical and chemical records of past climates from ice cores. I will 
 introduce the range of parameters measured by the system\, along with its 
 limitations. Using examples from recently drilled Arctic and Antarctic ice
  cores\, I will explain how different climatic chemical indicators are use
 d to reveal past environments: from the previous interglacial to post-indu
 strial eras\; and from volcanic records to subannual photochemical process
 es.\n
LOCATION:Unilever Lecture Theatre\, Department of Chemistry
END:VEVENT
END:VCALENDAR