Variations in atmospheric sulphate recorded in stalagmites by synchrotron micro-XRF and XANES analyses [rapid communication]

Details Variations in atmospheric sulphate recorded in stalagmites by synchrotron micro-XRF and XANES analyses [rapid communication] Variations in atmospheric sulphate recorded in stalagmites by synchrotron micro-XRF and XANES analyses [rapid communication]

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005e%26psl.235..729f&link_type=abstract

Earth and Planetary Science Letters, Volume 235, Issue 3-4, p. 729-740.

Physics

5

Scientific paper

We report here the first speleothem time-series of the variability of sulphate, a species whose abundance in catchments is strongly influenced by atmospheric anthropogenic and volcanic sources. Annually-resolved archives of S, Mg, Si and P were generated by applying synchrotron radiation micro X-Ray Fluorescence (XRF) to two speleothems from different sites in northern Italy. X-ray absorption-edge spectrometry proves that the S is in the form of sulphate and XRF mapping demonstrates that S is within calcite and enriched zones are predominantly as layers. A post-1850 A.D. record from the Ernesto cave shows a substantial rise in sulphate, interpreted as reflecting the largely anthropogenically-forced variation of sulphate of the atmospheric boundary layer, moderated by some ecosystem storage. Analysis of the circa 5.2 to circa 5.0 ka interval of a speleothem from Savi cave, where ecosystem retention of S is likely to have been minimal, shows a spiky sulphate record, resembling that of ice cores. A series of sulphate peaks suggest that multiple volcanic sulphate aerosol emissions at that time. This probably enhanced summer temperature cooling thus favouring the preservation of the human mummy of Neolithic Copper age, the “Iceman” on the watershed between Italy and Austria. Both examples illustrate the power of speleothems to record atmospheric sulphate variability.

Affiliated with

Also associated with

No associations

Rating

Variations in atmospheric sulphate recorded in stalagmites by synchrotron micro-XRF and XANES analyses [rapid communication] does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Variations in atmospheric sulphate recorded in stalagmites by synchrotron micro-XRF and XANES analyses [rapid communication], we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variations in atmospheric sulphate recorded in stalagmites by synchrotron micro-XRF and XANES analyses [rapid communication] will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1247949