Applications are being solicited for the following International Ocean Discovery Program expeditions:
Application deadline: 1 March 2018
IODP Expedition 383 will investigate the Pliocene-Pleistocene atmosphere-ocean-cryosphere dynamics of the Pacific Antarctic Circumpolar Current (ACC), and their role in regional and global climate and atmospheric CO2 based on sediment records with the highest possible stratigraphic resolution.
The expedition will test two major scientific hypotheses: (1) ACC dynamics and Drake Passage throughflow conditioned the global Meridional Overturning Circulation and high-low climate linkages on orbital and submillennial time-scales since the Pliocene. (2) Variations in the Pacific ACC determine the physical and biological characteristics of the oceanic carbon pump and atmospheric CO2.
The ACC is the world’s largest current system connecting all three major basins of the global ocean (the Pacific, Atlantic and Indian Oceans) integrating and responding to climate signals throughout the globe. By inducing strong upwelling and formation of new water masses, the ACC also fundamentally affects the global meridional overturning circulation (MOC) and the stability of Antarctica’s ice sheets, and has been recognized as a key mechanism in regulating variations in atmospheric CO2 and global climate.
IODP Expedition 383 is based on IODP Proposals 912-Full & 912-Add and will target six primary sites on a transect in the central South Pacific between the modern Polar Front and the Subantarctic Zone, and at the Chilean Margin close to the Drake Passage. Central Pacific sites will document the Plio-Quaternary ACC paleoenvironmental history at water depths ranging from 5100 to 3600 m. At the Chilean Margin the sites provide a depth transect (~1000–3900 m) across the major Southern Ocean water masses that will document Plio-Pleistocene changes in the vertical structure of the ACC—a key issue for understanding the role of the Southern Ocean in the global carbon cycle.
The planned drilling strategy is designed for recovering sediment sequences suitable for ultra-high-resolution studies. The proposed sites are located at latitudes and water depths where sediments will allow the application of a wide range of siliciclastic, carbonate, and opal-based proxies for reconstructing surface to deep ocean variations and their relation to atmosphere and cryosphere changes with unprecedented stratigraphic detail.
Application deadline: 15 April 2018
The International Ocean Discovery Program (IODP) is now accepting applications for scientific participants on Expedition 385 Guaymas Basin Tectonics and Biosphere aboard the JOIDES Resolution.
IODP Expedition 385 will core and log a series of sites in the Guaymas Basin to investigate the relationship of tectonics, magmatism, sedimentation, carbon cycling, and microbial activity. The primary objectives are to: (1) explore the physical and chemical gradients along active and extinct fluid pathways associated with sill emplacement; (2) investigate subsurface microbial communities that are sustained by alteration products, in order to determine how efficiently they capture carbon-bearing alteration products; and (3) advance our understanding of the conditions that limit life in the deep biosphere. The expedition will occur from 19 September to 19 November 2019. Additional information about this expedition can be found on the Expedition 385 webpage.
U.S.-affiliated scientists interested in participating in this expedition should apply to sail through the U.S. Science Support Program, by visiting http://usoceandiscovery.org/expeditions. The deadline to apply is April 15, 2018.
Who should apply
Opportunities exist for researchers (including graduate students) in all shipboard specialties—including but not limited to sedimentologists, micropaleontologists, paleomagnetists, inorganic/organic geochemists, petrologists, petrophysicists, microbiologists, and borehole geophysicists.
- USA: US Science Support Program (USSSP)
- Europe and Canada: ECORD Science Support & Advisory Committee (ESSAC)
- Japan: Japan Drilling Earth Science Consortium (J-DESC)
- P.R. China: IODP-China
- Brazil: IODP-CAPES
- Australia/New Zealand: Australia-New Zealand IODP Consortium (ANZIC)
- Korea: Korea International Ocean Discovery Program (K-IODP)
- India: IODP-India