Constraints on deep-water formation from the oceanic distributions of 10Be

Shangde Luo, Teh Lung Ku

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

An analysis of the oceanic distribution of cosmogenic 10Be shows that deep waters are formed by descending of cold, dense surface waters at a rate of Ο18 Sv (106 m3 s-1) in the northern North Atlantic and Ο21 Sv (of which Ο17 Sv enters the Pacific) in the Antarctic over the last mixing cycle of Ο800 years, lending support to the estimates based on radiocarbon and nutrient distributions. It also indicates that deep-water production in the northern North Atlantic is Ο50% higher averaging over the recent <100 years than over the last mixing cycle, suggesting a possible increase in the thermohaline ventilation of the North Atlantic during the past century.

Original languageEnglish
JournalJournal of Geophysical Research: Oceans
Volume108
Issue number5
Publication statusPublished - 2003 May 15

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

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