Exp. 362 Sumatra Seismogenic Zone

Expedition Information

Theme

Sumatra Subduction Zone -The role of input materials in shallow seismogenic slip and forearc plateau development

Proposal #837-Full (PDF)
Proposal #837-Add (PDF)

Scientific Prospectus＞＞To be published

Expedition Schedule

31 Jul – 30 Sep 2016

Drilling Vessel

JOIDES Resolution

Ports

Colombo (Sri Lanka)/Singapore

Drilling site

Scientific Objectives

The Sumatra Seismogenic Zone expedition (IODP Proposal 837-Full & 837-Add) aims to establish (1) the initial and evolving properties of the North Sumatran incoming sediments and (2) their potential effect on seismogenesis, tsunamigenesis, and forearc development for comparison with global examples. The 2004 Mw 9.2 earthquake and tsunami that struck North Sumatra and the Andaman-Nicobar Islands devastated coastal communities around the Indian Ocean. This earthquake showed unexpectedly shallow megathrust slip that was focused beneath the accretionary prism including the distinctive prism plateau offshore North Sumatra. This intriguing seismogenic behavior and forearc structure are not well explained by existing models and by relationships observed at margins where seismogenic slip typically occurs further landward. The correspondence between the 2004 rupture location and the overlying prism plateau, and evidence for a strengthened thick sediment input section suggests that the input materials are key to driving this distinctive slip behavior and long-term forearc structure.

Link to the USIO Website

Techtonics at the Sumatra Subduction(Stars to be drilled)

Co-chief Scientists

Lisa McNeill & Brandon Dugan

Science Party from J-DESC

Closed application

Support for IODP Science Party

Invited science party is supported by J-DESC for several years, including:

1. Pre-cruise Training：travel support for training before the cruise;
2. Expedition：travel support for the expedition;
3. After cruise work：analysis during the moratorium; and
4. Post-cruise research：Research funding upto three years after the expedition

Contact

J-DESC Support
JAMSTEC
E-mail: info_@_j-desc.org
Tel:045-778-5703