IODP Opportunities in GeoPRISMS Subduction Studies

  Fillmore ABC, Grand Hyatt San Francisco
345 Stockton Street, San Francisco, CA
Thursday, December 6, 2012, 6:00 – 9:30 pm


Conveners: Robert Stern, David Scholl, John Jaeger, Terry Plank

AnnouncementAgenda/Presentation archiveVenueRead the report

Much of our understanding of convergent margin processes is the direct result of ocean drilling on downgoing and overriding plates around the world. The GeoPrisms Subduction Cycles and Deformation (SCD) initiative presents new opportunities to engage IODP in this effort, specifically to understand the Cascadia, Aleutians-Alaska and Hikurangi subduction primary sites. The Drillship JOIDES Resolution will operate under a regional operations model during the new IODP program, and its shiptrack beyond 2014 will depend upon proposal pressure. Thus, now is the time to consider how to best use IODP drilling to support GeoPRISMS SCD science objectives, and to engage younger geoscientists in this effort, including proposal writing.

This mini-workshop will explore how best to use IODP drilling to support GeoPRISMS Subduction Cycles and Deformation science objectives, and especially, how to make use of the DV JOIDES Resolution for studying the Cascadia, Aleutian and New Zealand primary sites. Topics will include summaries of recent expeditions, future drilling targets, proposal development including workshops, and engaging early career geoscientists in these efforts.

6:00  Introduction | icon-file 76KbRobert Stern
6:05 Using the drillship to determine subduction zone inputs |  1Mb Terry Plank
6:20 Using the drilling ship to recover the long-term paleoseismic/tsunami history of giant Aleutian, Alaska, Cascadia,and New Zealand megathrust ruptures |  4Mb David Scholl
6:35 Using the drillship to understand relationships between mountain building, climate, and sedimentation | icon-file  2Mb – John Jaeger
6:50 Using the drillship to understand arc magmatic evolution through time by sampling the tephra record |  3Mb – Brian Jicha
7:05 Using the drillship to understand the age and origin of the Aleutian Marginal Basin what this tells about the early history of the Aleutian Arc |  4MbRobert Stern
7:20 Hikurangi IODP proposals |  2MbLaura Wallace
7:50 How to propose an IODP workshop |  2Mb – John Jaeger
8:00 What should be done next? | Robert Stern
8:15: Group Photo – Miniworkshop Adjourned
8:15: Informal Gathering of Embryonic Proposal- Planning Groups (optional): Groups with potential common interests are encouraged to self-organize, collect e-mails, and start the dialogues needed to generate and submit an IODP workshop proposal.

IODP Opportunities for SCD (Dec 6, 2012)

“Leveraging IODP Scientific Drilling in Support of Subduction Cycles & Deformation Science Objectives: AGU Mini-Workshop 2012”, Stern, R., Jaeger, J., Jicha, B., Plank, T., Scholl, D., Yogodzinski, G.; GeoPRISMS Newsletter, Issue No. 30, Spring 2013

About 25 scientists attending Fall AGU meeting in San Francisco took a couple hours out of their busy schedules to participate in a Thursday evening mini-workshop at the Grand Hyatt about how to best use seafloor drilling to address GeoPRISMS Subduction Cycles and Deformation (SCD) science objectives. A new decade of scientific ocean drilling will occur when the new International Ocean Discovery Project (IODP) gets underway; this is planned for 2013-2023 (For more information about IODP and GeoPRISMS, look at the GeoPRISMS Fall 2012 Newsletter). The primary goal of the AGU mini-workshop was to stimulate interested geoscientists to consider how IODP drilling in the Aleutians, Cascadia, and Hikurangi margins can attack the seven “key questions” in the SCD Initiative draft Science Plan. The two-hour brainstorming session was fueled by hors d’oeuvres, a cash bar, and six brief (5 minute presentations plus 10 minutes discussion) talks.