Individual and joint 2-D elastic full-waveform inversion of Rayleigh and Love waves

We investigate the performance of the individual 2-D elastic full-waveform inversion (FWI) of Rayleigh and Love waves as well as the feasibility of a simultaneous joint FWI of both wave types. The FWI of surface waves can provide a valuable contribution to near-surface investigations, since they are mainly sensitive to the S-wave velocity and hold a high signal-to-noise ratio. In synthetic reconstruction tests we compare the performance of the individual wave type inversions and explore the benefits of a simultaneous joint inversion. In these tests both individual wave type inversions perform similarly well, given that the initial P-wave velocity model is accurate enough. In this case the joint FWI further improves the result. For an inaccurate initial P-wave velocity model, we observe artifacts in the results of the Rayleigh wave FWI and the joint FWI. Subsequently, we recorded a near-surface field dataset to verify the results by a realistic example. In the field data application the Love wave FWI is superior to the Rayleigh wave FWI, possibly due to the initial P-wave velocity model. Also in this case the joint FWI further improves the inversion result

Die Anti-Landschaft bei Bashō Erganzungen zur Kritik am postmodernen Landschaftsbegriff

二宮まや教授古稀・退職記念

Konstruktivismus, Wahrnehmung und Gedächtnis : ein Plädoyer für einen konstruktivistischen Landschaftsdiskurs

In trying to study the idea of landscape (fukei) in Japanese waka-poetry, one may find oneself confronted with a great variety of concepts. All of these share commonalities in that they are not at all defined, that their meaning depends on personal usage (at the level of the producer, as well as of the researcher who often speaks the same language), and that they can be understood on a wide spectrum between the two extreme positions marked by fiction and reality (without, of course, any scientific concept about what fiction and reality might be). Although European traditions are coping with the concept of landscape in an aesthetical and philosophical way, there is no such comparable tradition in traditional Japanese literary history (kokubungaku). Because of this, there is no satisfactory way to conceptually understand waka-landscape, since the very basic key-term itself is not mutually accessible. European and Japanese concepts of landscape may not, therefore, be able to be brought together. To have an international scientific discussion on landscape (found in every culture historically and up to the present), it is necessary to develop a concept of landscape which is not only an issue of arts, aesthetics or philosophy, but also the subject of anthropological approaches and cultural studies. In this paper, I attempt to develop a concept of landscape, which is based on constructivism and the psychology of perception and memory. I will also show how constructivist thought has gained great popularity in German social and cultural studies

Lola rennt – kontingent : eine mögliche Beobachtung zum Diskurs von Gesellschaft, Film und Wissenschaft

Kinofilme dienen mitunter der Widerspiegelung gesellschaftlicher Realität. Der vom Japanologen Robert Wittkamp verfasste Essay stellt anhand von „Terminator“ und „The Matrix“ die filmische Erzeugung von Wirklichkeit sowie die Verflechtung von gesellschaftlichem Denken und Wissenschaft dar. Dabei erläutert er die in „The Matrix“ angedeutete Simulationstheorie. Abschliessend analysiert Wittkamp das zentrale Filmelement Kontingenz von Tom Tykwers „Lola rennt“ in Bezug auf Wissenschaft und Kultur

Die Anti-Landschaft bei Bashō Erganzungen zur Kritik am postmodernen Landschaftsbegriff

二宮まや教授古稀・退職記念