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Pelatihan : Techniques in Active Tectonic Study Juni 20-Juli 2, 2013 Instruktur: Prof. J Ramon Arrowsmith (JRA) Dari Arizona State University (ASU) - US.

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Presentation on theme: "Pelatihan : Techniques in Active Tectonic Study Juni 20-Juli 2, 2013 Instruktur: Prof. J Ramon Arrowsmith (JRA) Dari Arizona State University (ASU) - US."— Presentation transcript:

1 Pelatihan : Techniques in Active Tectonic Study Juni 20-Juli 2, 2013 Instruktur: Prof. J Ramon Arrowsmith (JRA) Dari Arizona State University (ASU) - US Tempat Pelaksanaan: Ruang Pangea, Laboratorium Gempabumi (LabEarth) – Puslit Geoteknologi LIPI dan Kuliah lapangan akan dilakukan disekitar Sesar Lembang, Jawa Barat. * Lebih jelas baca TOR/KAK dan daftar acara

2 Earthquake cycle exploration using 2D dislocations: strike-slip Outline of this lecture Motivations from the San Andreas Fault Basic ideas of dislocations Strike-slip parallel displacements from simple screw dislocation model (Thatcher, 1990) A few examples Application to Izmit Earthquake

3 Areas of contrasting behavior along the San Andreas Fault (from Allen, 1968) Carrizo Plain

4 1906 M7.8 San Francisco Earthquake Beginning of modern earthquake science

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6 1906 earthquake surface rupture. 8’ fence offset above http://mnw.eas.slu.edu/Earthquake_C enter/1906EQ/1906thumb.html And http://quake.wr.usgs.gov/info/1906/im ages/fenceoffset_big.html http://quake.wr.usgs.gov/info/1906/im ages/fenceoffset_big.html

7 “Reid’s elastic rebound hypothesis http://quake.wr.usgs.gov/info/1906/reid.html

8 http://www.matter.org.uk/matscicdrom/manual/di.html Edge dislocation Screw dislocation Dislocation: simple idealization of displacement discontinuity in continuous body

9 Idealization of brittle crust with embedded strike slip fault (Thatcher, 1990)

10 Strike-slip parallel displacements from simple screw dislocation model (Thatcher, 1990)

11 1906 coseismic displacements

12 Best fit depth: 7000 m

13 Interseismic motion along the San Andreas Fault System (max arrow length=~50mm/yr relative to stable North America) Noriega, et al. 2006 ; see also Schmalzle, et al., 2006 Thatcher, 1990 Plate Boundary Observatory velocity field

14 Young, et al., 2001

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