BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Seismotectonics of the Sumatra-Andaman region: insights from block
  modelling\, high-resolution seismicity and seismic imaging - Karen Lythgo
 e (University of Edinburgh)
DTSTART:20260311T140000Z
DTEND:20260311T150000Z
UID:TALK243160@talks.cam.ac.uk
CONTACT:ChuanChuan Lu
DESCRIPTION:Convergence of the Indo-Australian and Eurasian plates along t
 he Sunda subduction zone generates large earthquakes and tsunamis\, exempl
 ified by the 2004 Mw9.2 event. The subduction zone is a classic example of
  slip partitioning\, where oblique convergence is partitioned between the 
 megathrust and upper plate strike-slip faults. Upper plate faults are high
 ly active\, but their location and slip rates offshore are not well known.
  Additionally\, the distribution of locked and creeping areas along the fa
 ult systems is not well resolved.\n\nIn this talk\, I'll share initial res
 ults from two studies investigating this tectonic system. We first use ear
 thquake and GPS data to resolve fault slip rates through block modelling. 
 We find several new features of the tectonic system\, including the separa
 tion of the forearc into two independent blocks and a rapid slip rate of t
 he Andaman-Nicobar fault in the Andaman Sea. Second\, to better understand
  the geometry and behaviour of the Great Sumatran Fault in Northern Sumatr
 a\, we deployed 130 seismic nodes primarily for microseismicity detection 
 and subsurface imaging. Our ~18 months of data reveal pronounced differenc
 es in seismicity along the fault. One segment appears to be creeping\, wit
 h abundant shallow microseismicity and repeating earthquakes\, while the o
 ther appears to have a locked upper crust.
LOCATION:Wolfson Lecture Theatre
END:VEVENT
END:VCALENDAR