Registrations are now closed. Questions should be directed to the GeoPRISMS Office at info (at) geoprisms.org
Laura Wallace (GNS Science, New Zealand, Univ. Texas Institute for Geophysics), Dan Bassett (GNS Science, New Zealand), Heather Savage (Lamont Doherty Earth Observatory, Columbia University), Samer Naif (Lamont Doherty Earth Observatory, Columbia University), Shuo Shuo Han (Univ. Texas Institute for Geophysics), Patrick Fulton (Texas A&M University)
icon-chevron-right Participant list (last update 12/05/18)
icon-chevron-right Agenda (last update 12/05/18)
The Hikurangi margin offers an outstanding opportunity to address many of the key topics of GeoPRISMS Subduction Cycles and Deformation. Major international experiments to investigate subduction processes at the Hikurangi margin have taken place in the last year including two IODP drilling expeditions to investigate shallow slow slip events, and two seismic experiments with the R/V Langseth and R/V Tangaroa to investigate controls on plate coupling and slow slip. The objectives of a Hikurangi margin mini-workshop are to discuss new observations from the New Zealand focus site and their implications for an integrated understanding of subduction processes, as well as planning for upcoming experiments.
The first half of the miniworkshop will introduce the latest results from the recent GeoPRISMS-related research efforts at the Hikurangi margin (including IODP drilling and seismic experiments), and a discussion of the implications of these for GeoPRISMS SCD questions. The second half of the miniworkshop will consist of presentations on upcoming plans for field experiments and research at the Hikurangi focus site, and discussion on coordination of these efforts. We will also discuss any research gaps that might exist. In addition to a small number of overview talks on recent and future experiments, we will offer the opportunity for a limited number of short (~2 minutes) pop-up talks on synergistic activities at the Hikurangi subduction zone.
In addition to researchers focused on the Hikurangi margin, we welcome attendees interested in subduction deformation and megathrust processes in Cascadia and Alaska, to cross-fertilize ideas and research outcomes among all three of the GeoPRISMS primary sites. Student and early-career scientist participation is also encouraged.
1:15pm | Welcome & Introductory Remarks – GeoPRISMS Chair Demian Saffer
Session 1 – Integrating observations from an unprecedented summer research at Hikurangi
1:20 – 1:35 | Paleoseismic constraints on past earthquake behaviour – Jamie Howarth
1:35 – 1:50 | Summary of IODP Exp 372/375 – Demian Saffer
2:20 – 2:35 | Parallels between Alaska and the Hikurangi margin, and synergies with activities at the Alaska Primary Site – Donna Shillington
2:35 – 3:15 | Discussion of implications for the physical controls on subduction processes
– Structure around SCD key questions, processes or domains (e.g. incoming plate, forearc, megathrust)
3:15 – 3:30 | Coffee break
Session 2 – Future plans
3:30 – 3:45 | Seafloor Observatory installation and plans for ongoing seafloor geodesy and seismology – Laura Wallace
3:45 – 4:00 | SAFFRONZ project and the interplay between hydrogeology and slow slip – Evan Solomon
4:15 – 4:35 | Space for 2 minute (1 slide) pop-up talks summarizing other synergistic activities
- Earthquake rupture and ground shaking scenario – Yoshi Kaneko
- Seamount subduction prolongs shallow slow slip event in the forearc of the Northern Hikurangi Subduction Zone, New Zealand – Heather Shaddox
- Hikurangi Full Waveform Inversion – Adrien Arnulf
- Investigating the Coupling Between Deformation, Pore Pressure, and Fluid Flow in Subduction Forearcs – Tianhaozhe Sun
- – Abhi Ghosh
- Paleoseismic evidence for late Holocene earthquakes & tsunamis: Wairarapa to Northern Hawkes Bay – Jessica Pilarczyk
- A biomarker thermal maturity study of EXP375 samples – Genevieve Coffey
- Hikurangi Friction: Expedition 375 – Hannah Rabinowitz
- Tracing volatiles from the seafloor through volcanic arcs using stable isotopes and thermodynamic modeling – Gabe Epstein
- Reconciling Slow Slip Events with Distributed Visco-brittle Deformation – Adam Beall
- Transition from rifting to seafloor spreading in the N. TVZ- Havre Trough back-arc – Cindy Ebinger
- Hikurangi – Martha Savage
4:35 – 5:15 | Open Discussion
– What gaps in data/knowledge remain? What additional work needs to be done?