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SUMMARY:Quantifying fault slip over multiple earthquake cycles: the past i
 s the key to the present - Dr Laura Gregory (University of Leeds)
DTSTART:20191104T180000Z
DTEND:20191104T190000Z
UID:TALK131194@talks.cam.ac.uk
CONTACT:Natalie Forrest
DESCRIPTION:In an ideal world\, earthquakes would occur at regular interva
 ls such that information on the rate and typical size of events could be u
 sed to make accurate forecasts of the future likelihood of earthquakes. Ho
 wever when we investigate fault activity over timescales longer than an ea
 rthquake cycle\, we often find that earthquake recurrence and fault slip r
 ate is far more variable. \n\nI will outline some of the basics of earthqu
 ake mechanics\, and show why it is important to investigate the history of
  earthquakes in a region on timescales longer than humans have recorded th
 em. I will demonstrate how research using cosmogenic isotopes to quantify 
 fault activity during the past tens of thousands of years may be used to u
 nderstand how faults work\, particularly in the Abruzzo region of central 
 Italy and across major extensional basins in western Turkey. These methods
  are not always straightforward\, and we can discuss some of the limitatio
 ns and considerations required to reliably quantify past fault activity. T
 his will be very relevant to your undergraduate courses in Active Tectonic
 s\, and I’ll include plenty of field photos to keep everyone interested!
LOCATION: Harker 1\, Department of Earth Sciences\, Downing Street
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