Kermadec Arc – Havre Trough Planning Mini-Workshop

 icon-map-marker Fillmore ABC, Grand Hyatt San Francisco
345 Stockton Street, San Francisco, CA
Sunday, December 8, 2013, 8:00 am – 12:00 pm

Conveners: Adam Kent, Mark Reagan, Laurent Montesi, Kaj Hoernle

AnnouncementAgenda/Presentation archiveVenueRead the report

The Kermadec Arc and Havre Trough (KAHT) represent a classic intraoceanic arc – back-arc system. The KAHT extends north from the Taupo Volcanic Zone of New Zealand to the Tonga-Lau subduction system. With a well-defined arc front, remnant arcs (the Colville and Kermadec Ridges), and a back arc > 100 km wide, the KAHT system is a prime setting for investigating arc processes from subduction initiation, through arc splitting, to backarc formation, including tectonic and mass transfer processes.

Recently, the KAHT has become the focus of international research into intraoceanic arc systems, and it is part of the New Zealand GeoPRISMS focus site. A number of groups are already working in the system, including GeoPRISMS researchers and a significant number of other international groups (Germany, Japan, New Zealand, Australia). The goal of the workshop is to share details about science plans and existing results, and to coordinate future activities to maximize the synergy between different expeditions and research programs. Researchers with existing or planned future programs in this region are encouraged to attend the workshop.


8.00 Introductory Remarks and logistics | Adam Kent
8.10 Introduction to the GeoPRISMS program |  icon-file 560KbPeter van Keken
8.20 GeoPRISMS NSF plans and opportunities | Jenn Wade
8.30 Keynote: KAHT system introduction |   4.2MbIan Smith

Ongoing projects

9.00 Japanese ROV Plans | Yoshi Tamura
9.15 German Plans |    670KbKaj Hoernle
9.30 New Zealand Plans | Adam Kent
9.45 Australian Plans | Richard Arculus
10.00 Break + Posters

10.30 Subduction fluxes | Erin Todd/ Jim Gill
10.45 Subduction Initiation: lessons from the IBM | (   2.0MbMark Reagan
11.00 Pop up talks:
Recent Tonga dives |   2.1MbOsamu Ishizuka
Nicaragua EM | Samer Naif)
NE Lau- Tofua arc |    3.8MbKen Rubin
Fernando Martinez
Marth Torres
Jessica Warren
Dan Bassett
11.45 Discussion: Priorities

Kermadec Arc-Havre Trough Planning Mini-workshop (8am-12 pm, December 8, 2013)

Kermadec Arc-Havre Trough Planning Mini-workshop (8am-12 pm, December 8, 2013)

“Kermadec Arc-Havre Trough Planning Mini-Workshop Report”, Kent, A., Reagan, M., Montési, L., Hoernle, K.; GeoPRISMS Newsletter, Issue No. 32, Spring 2014.

On Sunday December 8, 2013 a diverse group of international researchers gathered at the Grand Hyatt, San Francisco for a GeoPRISMS-sponsored Mini-Workshop aimed at advancing collaborative science within the Kermadec-Havre Trough system (KAHT), part of the SCD New Zealand Focus Site. This followed from the successful New Zealand Planning Workshop held in Wellington in April 2013. The primary goal of this Mini-Workshop was to bring representatives of international groups together to discuss recent results, review ongoing science plans, and to identify area for future work under the aegis of GeoPRISMS.