Trace elements in a dated ice core from Antarctica
- Massachusetts Inst. of Tech., Cambridge (United States)
- State Univ. of New York, Buffalo (United States)
Aerosol particles from both natural and anthropogenic sources are emitted into the atmosphere and transported by wind systems by various mechanisms. Once airborne, the particles, which contain various trace elements, accumulate on the earth's surface as either condensation nuclei or by dry fallout processes. In the polar regions, these particles are incorporated and deposited in snow layers in sequential time-unit increments. The trace analysis of elements contained in dated annual snow layers provides a measure of the elemental chemistry content of the atmosphere for the same time interval. A 164-m-deep, 10-cm-diam ice core was obtained at Byrd Station, Antarctica, in November 1989. Other physical and chemistry studies on this ice core have identified its detailed chronology in annual increments for the past 1360 yr. This study presents the results of the instrumental neutron activation analysis (INAA) measurements made on 26 individually dated samples of this core, selected between the 6.43- and 118.15-m depths.
- OSTI ID:
- 7034919
- Report Number(s):
- CONF-920606-; CODEN: TANSA
- Journal Information:
- Transactions of the American Nuclear Society; (United States), Vol. 65; Conference: American Nuclear Society annual meeting, Boston, MA (United States), 7-12 Jun 1992; ISSN 0003-018X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANTARCTICA
AIR POLLUTION
ELEMENTS
NEUTRON ACTIVATION ANALYSIS
ICE
CHEMICAL COMPOSITION
DRILL CORES
ENVIRONMENTAL TRANSPORT
ISOTOPE DATING
TRACE AMOUNTS
ACTIVATION ANALYSIS
AGE ESTIMATION
ANTARCTIC REGIONS
CHEMICAL ANALYSIS
MASS TRANSFER
POLAR REGIONS
POLLUTION
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
400101 - Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures