Showing papers by "Mark A. J. Curran published in 2003"
TL;DR: A significant correlation is reported between methanesulphonic acid concentrations from a Law Dome ice core and 22 years of satellite-derived sea ice extent (SIE) for the 80°E to 140°E sector and suggests that there has been a 20% decline in SIE since about 1950.
Abstract: The instrumental record of Antarctic sea ice in recent decades does not reveal a clear signature of warming despite observational evidence from coastal Antarctica. Here we report a significant correlation ( P
314 citations
TL;DR: In this article, the authors used thermal ionisation mass spectrometers to investigate the possible deposition of heavy metals from the 1815 AD eruption of Tambora volcano (8.5°S, 117.4°E) in Indonesia.
30 citations
TL;DR: Lead isotopes and Pb, Ba and Bi concentrations have been recetltly measured at sub-annual resolution in an ice core section from Law Dome, Antarctica, corresponding to the period 1814 - 1819 AD and containing a SO 4 2- signal attributed to the 1815 AD eruption of Tambora volcano in Indonesia as discussed by the authors.
Abstract: Lead isotopes and Pb, Ba and Bi concentrations have been recetltly measured at sub-annual resolution in an ice core section from Law Dome, Antarctica, corresponding to the period 1814 - 1819 AD and containing a SO 4 2- signal attributed to the 1815 AD eruption of Tambora volcano in Indonesia. While increasing concentrations of Pb and Bi coincide with the 1817-1818 AD volcanic SO 4 2- peak, Pb isotope data do not confirm Tambora as the source. Barium concentrations were elevated from 1816.5 to 1818.5 AD, indicating increased atmospheric dust levels. These findings contribute to the growing body of data indicating that effusive, rather than explosive, volcanism is the most important volcanic emission process determining the flux of volcanogenic heavy metals to the polar ice sheets.
2 citations