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Detailed Reference Information |
Steig, E.J., Polissar, P.J., Stuiver, M., Grootes, P.M. and Finkel, R.C. (1996). Large amplitude solar modulation cycles of 10Be in Antarctica: Implications for atmospheric mixing processes and interpretation of the ice core record. Geophysical Research Letters 23: doi: 10.1029/96GL00255. issn: 0094-8276. |
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10Be concentrations in an ice core at Taylor Dome, Antarctica show greater variation over the last 75 years than similar 10Be time-series from Greenland. Like the Greenland records, the new Antarctic data exhibit a strong periodicity which follows expected changes in the production rate of 10Be over the 11-year solar cycle. Noting that the amplitude of production-rate variation is both latitude and altitude dependent, we estimate the relative contribution of 10Be from different atmospheric reservoirs. The calculations yield a relatively small (<35%) contribution from the low-to-mid latitude stratosphere, suggesting a weak coupling between Antarctic 10Be and geomagnetic field intensity. ¿ American Geophysical Union 2996. |
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Abstract |
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Keywords
Information Related to Geographic Region, Antarctica, Meteorology and Atmospheric Dynamics, Paleoclimatology, Global Change, Solar variability, Atmospheric Composition and Structure, Middle atmosphere—constituent transport and chemistry, Global Change, Remote sensing |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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