Direct ventilation of the North Pacific did not reach the deep ocean during the last deglaciation
Article first published online: 16 JAN 2013
©2012. American Geophysical Union. All Rights Reserved.
Geophysical Research Letters
Volume 40, Issue 1, pages 199–203, 16 January 2013
How to Cite
2013), Direct ventilation of the North Pacific did not reach the deep ocean during the last deglaciation, Geophys. Res. Lett., 40, doi:10.1029/2012GL054118., and (
- Issue published online: 29 JAN 2013
- Article first published online: 16 JAN 2013
- Manuscript Accepted: 26 NOV 2012
- Manuscript Revised: 26 NOV 2012
- Manuscript Received: 5 OCT 2012
- subarctic Pacific;
 Despite its tremendous size, the deep North Pacific has received relatively little attention by paleoceanographers. It was recently suggested that the deep North Pacific was directly ventilated by dense waters formed in the subarctic Pacific during Heinrich Stadial 1 (HS1) of the early deglaciation. Here we present new redox-sensitive trace metal data from a sediment core at 2393 m in the subarctic Pacific, in comparison with previously published data from elsewhere in the region. The combined picture shows no sign of ventilation during the early deglaciation in any available core from water depths of 2393 m and deeper, while the deepest core to display clear signs of enhanced ventilation during HS1 was raised from 1366 m water depth. Thus, it appears likely that, although the North Pacific was well ventilated to intermediate depths during HS1, the deep ocean did not receive a significant input of dense waters from a local source, but remained isolated from the surface waters above.