Expedition 382 aims to recover 600 m long Late Neogene sedimentary sequences from the Scotia Sea to reconstruct past variability in Antarctic Ice Sheet (AIS) mass loss, oceanic and atmospheric circulation and to provide the first spatially integrated record of variability in iceberg flux from Iceberg Alley, where a substantial number of Antarctic icebergs exit into the warmer Antarctic Circumpolar Current (ACC). This will (a) constrain iceberg flux during key times of AIS evolution since the Middle Miocene glacial intensification of the East Antarctic Ice Sheet, (b) provide material to determine regional sources of AIS mass loss, address interhemispheric phasing of ice-sheet and climate events, and the relation of AIS variability to sea level, (c) provide information on Drake Passage throughflow, meridional overturning in the Southern Ocean, water-mass changes, CO2 transfer via wind-induced upwelling, sea-ice variability, bottom water outflow from the Weddell Sea, Antarctic weathering inputs, and changes in oceanic and atmospheric fronts in the vicinity of the ACC, and (d) provide dust proxy records to reconstruct changes in the Southern Hemisphere westerlies to evaluate climate-dust coupling since the Pliocene, its potential role in iron fertilization and atmospheric CO2 drawdown during glacials. Expedition 382 will also core a sediment drift on the Falkland slope to obtain subantarctic multi-proxy intermediate water depth records of millennial to orbital scale variability in the ocean, atmosphere, nutrients, productivity and ice-sheet dynamics in the SW Atlantic through at least the last 1 Ma. The deadline to apply is October 15, 2017.
The West Antarctic Ice Sheet (WAIS) is largely marine-based, highly sensitive to climatic and oceanographic changes, has had a dynamic history over the last several million years, and if completely melted, could result in a global sea-level rise of 3.3-4.3 m. Expedition 379 will obtain records from the continental shelf and rise of the Amundsen Sea to document WAIS dynamics in an area unaffected by other ice sheets as well and that currently experiences the largest ice loss in Antarctica. The primary objectives include (a) reconstructing the Paleogene to Holocene glacial history of West Antarctica, (b) correlating the Amundsen Sea WAIS-proximal records with global records of ice volume changes and air/seawater temperature proxy records, (c) constraining the relationship between incursions of warm water masses onto the continental shelf and the stability of marine-based ice sheet margins, and (d) reconstructing major WAIS advances onto the middle and outer shelf, including the first ice sheet expansion onto the continental shelf of the Amundsen Sea Embayment and its possible control by the uplift of Marie Byrd Land. U.S.-affiliated scientists interested in participating in these expeditions should apply to sail through the U.S. Science Support Program – visit. The deadline to apply is October 15, 2017.
Authors: Martin Krüger and Axel Schippers
Integrated Ocean Drilling Program (IODP) Expedition 347 to the Baltic Sea in 2013 was in line with the IODP Science Plan main research theme “Deep biosphere responses to glacial–interglacial cycles,” addressing questions such as deep biosphere evolution, its biogeochemical processes, and how the postglacial diffusive penetration of conservative seawater ions may alter the chemical composition and microbial physiology in the subseafloor biosphere. Consequently, we tried to enrich indigenous microorganisms at in situ conditions using a broad range of electron acceptors (for fermenters; Fe, Mn, and sulfate reducers; and methanogens), simple and complex carbon substrates (in mixtures or as single compounds), and a wide range of culture conditions (temperature and salinity) to cover varying environmental conditions and metabolic requirements. The most successful were enrichment cultures with a mix of polymeric substrates, which proved to be successful for all samples investigated. Also, iron- and manganese-reducing organisms could be enriched from all sites, whereas nitrate as an electron acceptor did not work well. Methanogenic enrichments were only successful for a few of the samples investigated. In these cases, different monomeric as well as complex substrates were converted to methane, indicating a metabolically versatile indigenous microbial community in the sediments.
The International Ocean Discovery Program (IODP) is now accepting applications for scientific participants on Expedition 377 Arctic Ocean Paleoceanography aboard a Mission Specific Platform (MSP) provided by the ECORD Science Operator. To learn more about the scientific objectives of this expedition, life at sea, and how to apply to sail, please join in a web-based seminar on Monday 22 May 2017 at 1pm GMT (9:00 am EDT). To register for the webinar, click here.The offshore phase of Expedition 377 is provisionally scheduled for a maximum of 60 days during Autumn 2018, with only a subset of the Science Party participating. Offshore activities will focus on core recovery, curation, sampling for ephemeral properties, biostratigraphy, physical properties, preliminary lithostratigraphy (whole core observed at core ends and through plastic liners), and downhole logging. The cores will not be split at sea. Subsequently, an Onshore Science Party (OSP) will be held at the MARUM – Center for Marine Environmental Sciences, University of Bremen, Germany, in early 2019 (exact dates to be confirmed), where the cores will be split. The OSP will be a maximum of 4 weeks long, the exact length dependent on core recovery. All members of the Science Party must attend the Onshore Science Party. Successful applicants will be invited either as an offshore-onshore participant, or as an onshore-only participant. Please note that there are no opportunities for offshore-only participation. Opportunities exist for researchers (including graduate students) in all specialties. While other expertise may be considered, specialists in the following fields are required: sedimentology, paleontology, palynology, organic geochemistry, inorganic geochemistry, structural geology, paleomagnetics, microbiology, physical properties, geophysics, stratigraphic correlation and downhole logging. For the offshore phase of the expedition, we are particularly looking for the following fields: sedimentology, paleontology, organic geochemistry, inorganic geochemistry, microbiology, physical properties, and petrophysics/downhole logging. U.S.-affiliated scientists interested in participating in this expedition should apply to sail through the U.S. Science Support Program. The deadline to apply is June 23, 2017.
The International Ocean Discovery Program (IODP) is now accepting applications for Expedition 380 NanTroSEIZE Frontal Thrust Long-Term Borehole Monitoring System (LTBMS) aboard the D/V Chikyu. The Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) Project comprises multiple expeditions over a multi-year period aimed at sampling and instrumenting the up-dip transition into the subduction seismogenic zone. The goal of Expedition 380 is to install an LTBMS in the accretionary toe region near the trough axis at Site C0006, previously drilled during IODP Expeditions 314 and 316. The LTBMS sensors will include: seafloor reference and formation pressure sensors, broadband seismometer, tiltmeters, volumetric strainmeter, geophones, and accelerometers. This will be the third LTBMS installed for the NanTroSEIZE project. The expedition is currently planned for 43 days, beginning on 23 October, sailing on 26 October (after three days of portcall), and finishing on 5 December, 2017. If LTBMS/CORK installation goes ahead of schedule, the ship will return early to port and the expedition will be complete. Additional information about this expedition can be found in the Expedition 380 Call For Participation. Opportunities exist for researchers (including graduate students) to sail on the expedition. Scientific specialties that will likely be required for the shipboard science party include observatory science and downhole logging. U.S.-affiliated scientists interested in participating in this expedition should apply to sail through the U.S. Science Support Program. The deadline to apply is April 28, 2017.
July 10-12, 2017; Narragansett, Rhode Island, USA. Interactions between the land and ocean can provide important feedbacks to climatic evolution and surface processes. The Asian monsoon is an impressive example of these interactions as a major component of Earth’s climate affecting over half of the world population. In the Indian Ocean sector, close interactions between physical and biogeochemical processes with the tectonics of the India-Eurasia collision zone may have controlled both regional and global climate during the Cenozoic. The record of such interactions is best preserved in the ocean and was the target of recent scientific drilling across the region. Land-ocean interactions also play a critical role in modulating climate over Africa where complex interactions between the Indian monsoon and Atlantic occurs. Between 2013 and 2016, a series of IODP expeditions drilled in the Indian Ocean and Western Pacific oceans covering the Asian and Australian monsoon domains and adjacent regions. The goal of this 2.5-day workshop is to review results of the recent regionally-focused scientific drilling expeditions in the Indian Ocean, to propose possible paths for an integrated understanding of the role and response of climate in regulating Indian Ocean hydrology, hydrography, sedimentation, and biogeochemistry, and to synthesize practical lessons for future scheduled and proposed regional IODP drilling campaigns. The workshop is open to U.S. and international participants, and the deadline to apply is April 28, 2017.
The International Ocean Discovery Program (IODP) at Texas A&M University is seeking a qualified individual to oversee curation efforts in support of JOIDES Resolution expeditions and the IODP Gulf Coast Core Repository. The Curator is responsible for oversight of the IODP core and sample collections at the Gulf Coast Repository (GCR) and on JOIDES Resolution expeditions, conservation of the core collection for future use, and supervision of all personnel and activities in the Gulf Coast Repository. The Curator is also expected to develop innovative uses of the core collection and repository. The ideal candidate will have demonstrated experience in a supervisory/management position, including experience with financial, programmatic, reporting, and personnel management. We prefer a background in project management, curation, and familiarity with IODP core curation policies. In addition, the Curator may sail on IODP expeditions if curation support is required. Although the Curator is not expected to sail routinely, the ability to sail is mandatory. At sea, the Curator will be responsible for creating a sampling plan for each site, processing cores as they are received, and training and supervision of the science party in IODP curatorial practice. We will begin reviewing applications on April 1, 2017, but will continue to accept applications until candidates are selected for interviews.
International Ocean Discovery Program (IODP) Expedition 357 successfully cored an east–west transect across the southern wall of Atlantis Massif on the western flank of the Mid-Atlantic Ridge (MAR) to study the links between serpentinization processes and microbial activity in the shallow subsurface of highly altered ultramafic and mafic sequences that have been uplifted to the seafloor along a major detachment fault zone. The primary goals of this expedition were to (1) examine the role of serpentinization in driving hydrothermal systems, sustaining microbial communities, and sequestering carbon; (2) characterize the tectonomagmatic processes that lead to lithospheric heterogeneities and detachment faulting; and (3) assess how abiotic and biotic processes change with variations in rock type and progressive exposure on the seafloor. To accomplish these objectives, we developed a coring and sampling strategy centered on the use of seabed drills—the first time that such systems have been used in the scientific ocean drilling programs. This technology was chosen in the hope of achieving high recovery of the carbonate cap sequences and intact contact and deformation relationships. The expedition plans also included several engineering developments to assess geochemical parameters during drilling; sample bottom water before, during, and after drilling; supply synthetic tracers during drilling for contamination assessment; acquire in situ electrical resistivity and magnetic susceptibility measurements for assessing fractures, fluid flow, and extent of serpentinization; and seal boreholes to provide opportunities for future experiments.
The International Ocean Discovery Program (IODP) is now accepting applications for scientific participants on Expedition 376 Brothers Arc Flux aboard the JOIDES Resolution. Expedition 376 will investigate the fundamental, interrelated processes governing subseafloor hydrothermal activity at Brothers volcano, southern Kermadec arc. The primary objectives are to (1) Characterize the subsurface, magma-derived volatile phase for testing models predicting the existence of either a single-phase gas or a two-phase brine-vapor; (2) Explore the distribution of base and precious metals and metalloids at depth as well as the reactions that have taken place during their precipitation along fluid migration pathways to the seafloor; (3) Quantify the mechanisms and extent of fluid-rock interaction, and what this implies for the mass flux of metals and metalloids to the ocean as well as the role of magma-derived carbon and sulfur species in acting as agents for those fluxes; and (4) Assess the diversity, extent, and metabolic pathways of microbial life in an extreme, acidic, and metal-toxic (sub)volcanic environment. The expedition will occur from 5 May through 5 July 2018. Opportunities exist for researchers (including graduate students) in specialties including (but not limited to) sedimentologists, petrologists (igneous/metamorphic/sulfide), structural geologists, paleomagnetists, petrophysicists, borehole geophysicists, microbiologists, and inorganic/organic geochemists. To learn more about the scientific objectives of Exp. 376, life at sea, and how to apply to sail, please join us for a web-based seminar on Wednesday, March 15, 2017 at 1:00 pm EDT (register). 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 1, 2017.
The Proposal Database System (PDB) is the web-based interface for completing and submitting IODP proposals. PDB offers specific guidance and many proposal components are now created interactively; proponents are advised to begin working with PDB as soon as a proposal is planned. Complete proposal preparation guidance, format requirements, and review policies are explained in the IODP Proposal Submission Guidelines. A Call for Scientific Ocean Drilling Proposals is usually published at least two months in advance of the deadline with specifics about what types proposals are being sought. Proponents are strongly encouraged to contact the Science Operators to discuss platform-specific operational and fiscal constraints before developing proposals. The IODP Proposal Manager has sole authority to accept proposals or grant exceptions to deadlines and policies. Next Proposal Submission Deadline: April 3, 2017.
Follow along with IODP Expedition 366: Mariana Convergent Margin & South Chamorro Seamount (co-chief Geoff Wheat, Dec 8, 2016 to Feb 7, 2017) with onboard videos from Education and Outreach Officer Kristen Weiss on Vimeo.