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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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 transcript:

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

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

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

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

1906 earthquake surface rupture. 8’ fence offset above enter/1906EQ/1906thumb.html And ages/fenceoffset_big.html ages/fenceoffset_big.html

“Reid’s elastic rebound hypothesis

Edge dislocation Screw dislocation Dislocation: simple idealization of displacement discontinuity in continuous body

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

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

1906 coseismic displacements

Best fit depth: 7000 m

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

Young, et al., 2001