Journal of Paleolimnology 32: 137–148, 2004. # 2004 Kluwer Academic Publishers. Printed in the Netherlands.

• Main Authors: Sheldon V. Smith, Raymond S. Bradley, Mark B. Abbott
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2003
• Subjects: Agassiz Ice Cap; Canada; Ellesmere Island; Eureka; Lake Tuborg; Ice cap
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.494.5733; http://www.geo.umass.edu/faculty/bradley/smith2004.pdf

Lamination thickness measurements in sediments from Lake Tuborg, northern Ellesmere Island, Canada document an increase in high-energy hydrologic discharge events from 1865 to 1962. The timing of these events corresponds with evidence for an increase in the amount of melt on the adjacent Agassiz Ice Cap, as recorded in ice cores. There appears to have been a non-linear change in depositional energy resulting from a dramatic increase in Agassiz meltwater discharge, particularly after1908. A strong correlation between the Lake Tuborg varve thickness record, the amount of melting on the Agassiz Ice Cap and Eureka 900 mb air temperature records suggests that changes in the height of the freezing level in the atmosphere have affected the extent of summer melting on the Agassiz Ice Cap, leading to high volume discharge events and associated sediment flux to Lake Tuborg.