Tectonic framework of the central Java subduction zone

ISBN-13: 9783838126371 / Angielski / Miękka / 2011 / 180 str.

Andreas Wittwer

Opis

The tectonic framework of the central Java subduction zone is presented in this study. Three marine wide-angle seismic profiles are analyzed by combined forward- and inverse modeling of first and later arrival traveltimes and are integrated together with marine gravity data. The subduction of the oceanic Roo Rise plateau, located south of central Java, with its thickened and buoyant crust, strongly influences subduction dynamics. The incipient subduction of a broad band of seamounts causes frontal erosion of the margin and leads to mass wasting due to oversteepening of the upper trench wall. The rough surface of the Indo-Australian lithosphere with its volcanic edifices affects the interplate coupling. Seamounts and similar features present on the megathrust may potentially act as asperities to seismic rupture, limiting lateral rupture propagation.

O autorze

Wittwer, AndreasStaatsexamen zum Physikalisch-Technischen-Assistenten 1997 an der PTL in Wedel bei Hamburg. Studium der Geophysik an der Universität in Hamburg mit Diplom 2004. Wissensch. Angest. am IFM-GEOMAR in Kiel bis 2007, freier Mitarbeiter bei Terra Seis Middle East bis 2011, Promotion in Kiel 2011, angestellt bei der Fa. SPACETEC in Freiburg seit 2011.