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Workshop Announcement: Seafloor Pockmarks and Their Role in Modulating the Release of Geologic Carbon Through Glacial Cycles
About the workshop
Date: June 9-10, 2026
Location: Corpus Christi, TX, USA
Workshop Contacts: Ingo Pecher (Texas A&M University Corpus Christi), Lowell Stott (University of Southern California), Lorna Strachan (University of Auckland), and Ewa Burwicz-Galerne (MARUM)
Deadline to Apply: March 8, 2026
A vast area of the seafloor on the Chatham Rise east of New Zealand is covered by crater-like pockmarks. Sub-bottom profiler data show clear evidence that these pockmarks formed repeatedly around glacial-stage maxima. Large radiocarbon excursions observed in sediment cores suggest pockmarks formed by release of geologic carbon-rich fluids at the end of the last glacial period.
These observations support a novel hypothesis that pockmark formation modulated the release of geologic carbon to the ocean and thereby contributed to increased atmospheric CO2 concentrations during deglaciations. Validation of this hypothesis would be a paradigm shift from the prevailing hypothesis that does not incorporate geologic processes to explain atmospheric CO2 variations.
This workshop will bring together a diverse community of scientists to develop proposals for ocean drilling and accompanying site surveys. With this workshop, we intend to kick-start a comprehensive science program that will illuminate the role of geologic mechanisms in affecting atmospheric CO2 concentrations on glacial/interglacial timescales.
Participation
U.S.-based Scientists
To apply for workshop support through the U.S. Science Support Program, please submit the following documents to this form, or e-mail them to Ingo Pecher by March 8, 2026:
- Statement of interest and motivation
- CV
- For students, letter of support by committee chair
Please contact Ingo Pecher or Lowell Stott if you have any questions.
IODP3-based Scientists
Scientists from IODP3 member countries are encouraged to join the workshop. For potential support options, please contact:
- Lorna Strachan (Australia, New Zealand)
- Ewa Burwicz-Galerne (ECORD member countries)
- Ingo Pecher (other countries)
Special consideration will be given to early- to mid-career scientists.