Oceanography The Official Magazine of
The Oceanography Society
Volume 19 Issue 04

View Issue TOC
Volume 19, No. 4
Pages 162 - 167


The Arctic Coring Expedition (ACEX) Recovers a Cenozoic History of the Arctic Ocean

Kathryn MoranJan Backman The IODP Expedition 302 Science Party
First Paragraph

The Arctic Ocean is a small, nearly landlocked ocean basin that is the shallowest in the world (Figure 1). It has maintained a polar location since forming in Early Cretaceous times (Grantz et al., 1990). The ocean’s two central deep basins (Amerasian and Eurasian) and its shelf seas occupy 2.6 percent of the global ocean area and less than 1 percent of the global ocean volume (Menard and Smith, 1966; Jakobsson, 2002). The mean water depth is ~ 1400 m, which is ~ 2.5-km shallower than the global ocean mean depth (Jakobsson, 2002). The Arctic Ocean is further distinguished from the other oceans by its large shelf areas (53 percent in Arctic vs. 13 percent of total average area in all other oceans), small basins (17 percent vs. 42 percent), and large ridge areas (16 percent vs. 3 percent) (Jakobsson, 2002).


Moran, K., J. Backman, and the IODP Expedition 302 Science Party. 2006. The Arctic Coring Expedition (ACEX) recovers a Cenozoic history of the Arctic Ocean. Oceanography 19(4):162–167, https://doi.org/10.5670/oceanog.2006.14.

Copyright & Usage

This is an open access article made available under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution, and reproduction in any medium or format as long as users cite the materials appropriately, provide a link to the Creative Commons license, and indicate the changes that were made to the original content. Images, animations, videos, or other third-party material used in articles are included in the Creative Commons license unless indicated otherwise in a credit line to the material. If the material is not included in the article’s Creative Commons license, users will need to obtain permission directly from the license holder to reproduce the material.