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Full-Text Articles in Physical Sciences and Mathematics
Volcanic Ash From The 1362 A.D. Oræfajokull Eruption (Iceland) In The Greenland Ice Sheet, J. M. Palais, K. Taylor, Paul Andrew Mayewski, P. Grootes
Volcanic Ash From The 1362 A.D. Oræfajokull Eruption (Iceland) In The Greenland Ice Sheet, J. M. Palais, K. Taylor, Paul Andrew Mayewski, P. Grootes
Earth Science Faculty Scholarship
A continuous record of electrical conductivity measurements (ECM) was made on site during the drilling of a 200 m ice core at Summit, Greenland and was used to identify horizons in the ice that might be linked to volcanic eruptions. In one detailed section that we studied a large peak in the number of particles, two orders of magnitude above the background, was measured. The particle peak was not associated with an ECM peak, however. The particles were identified as volcanic ash on the basis of both particle morphology and chemical composition. The ash composition suggests an explosive rhyolitic eruption …
Trace Elements In Estuarine And Coastal Waters: U.S. Studies From 1986-1990, Gregory A. Cutter
Trace Elements In Estuarine And Coastal Waters: U.S. Studies From 1986-1990, Gregory A. Cutter
OES Faculty Publications
The use of specialized analytical techniques, field studies, controlled laboratory experiments, and geochemical modeling have allowed U.S. investigators to expand our understanding of trace element cycling in coastal waters and estuaries. Considerable emphasis has been placed on quantifying the flux of trace elements within and through the coastal zone. In addition, substantial progress has been made in identifying the chemical speciation of many trace elements, providing a linkage between the geochemical and biochemical behavior of these elements. Another significant advance has been the use of trace elements as tracers of geochemical processes and water masses in the coastal environment.