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International Ocean Discovery Program Expedition 383 Scientific Prospectus Addendum

Dynamics of the Pacific Circumpolar Current (DYNAPACC)1

Frank Lamy

Co-Chief Scientist

Alfred Wegener Institute

Helmholtz Zentrum für Polar und Meeresforschung


Gisela Winckler

Co-Chief Scientist

Lamont-Doherty Earth Observatory

Columbia University


Carlos A. Alvarez Zarikian

Expedition Project Manager/Staff Scientist

International Ocean Discovery Program

Texas A&M University


Published October 2018

See the full publication in PDF.


This addendum to the International Ocean Discovery Program (IODP) Expedition 383 Scientific Prospectus (Dynamics of the Pacific Antarctic Circumpolar Current; Lamy et al., 2018) addresses the results of the safety review of 10 new proposed drill sites by the IODP Environmental Protection and Safety Panel (EPSP) on 4–6 September 2018 and a change to the operations plan and the end port call for Expedition 383.

Because of an adjustment to the R/V JOIDES Resolution 2018–2019 operations schedule, the end port for Expedition 383 has changed from Valparaiso, Chile, to Punta Arenas, Chile. Therefore, at the time of publication of this addendum, the expedition is scheduled to start and end in Punta Arenas, Chile. The dates of the expedition remain unchanged from the original Expedition 383 Scientific Prospectus (Lamy et al., 2018), from 20 May to 20 July 2019. The change in port reduces the distance and hence the transit time between the last drill site in the central South Pacific and the port in Chile, providing ~3 additional days for scientific drilling operations. For that reason, a new proposed primary site (CSP-7A) in the central South Pacific has been added to the original operations plan from Lamy et al. (2018), bringing the total number of primary sites planned for Expedition 383 to seven (Figures F1, F2, F3, F4).

The current operations plan and time estimates include 5 days of port call activities, 38.2 days of operations, and 17.7 days of transit.

1Lamy, F., Winckler, G., and Alvarez Zarikian, C.A., 2018. Expedition 383 Scientific Prospectus Addendum: Dynamics of the Pacific Antarctic Circumpolar Current (DYNAPACC). International Ocean Discovery Program.

This work is distributed under the Creative Commons Attribution 4.0 International (CC BY 4.0) license.