If you would like to know more, jump to the following places.
visit Ruedi's office
Black Forest Observatory (BFO)
IASP91 travel times
Eigenfrequencies and -functions of spherical Earth models
Animations of free oscillations of the Earth (by Lucien Saviot)
Seismo-surfing
Erneuerung und Ausbau der Magnetik am BFO (2002)
Magnetik: Installation von Sensoren und Elektronik (Jan. 2003)
Data acquisition upgrade for the GRSN STS-2: Quanterra Q680 -> Q330HR (April 2008)
Animated WAM now-casts published by FNMOC (US Navy)
Freaque Waves
The horizontal hum of the Earth: A global background of spheroidal and toroidal modes
(Kurrle, D. and Widmer-Schnidrig, R.
Geophysical Research Letters (GRL), paper 10.1029/2007GL033125, 2008)
Die Sinfonie der Erde - ein populärwissenschaftlicher Artikel zu den torsionalen Hintergrundeigenschwingungen der Erde
(Ralf Butscher, Bild der Wissenschaft, Heft 1, 2009)
Application of regionalized multiplet stripping to retrieval of aspherical structure constraints (R. Widmer-Schnidrig, Geophys. J. Int. p. 201-213, Vol. 148, 2002)
What can Superconducting Gravimeters contribute to
Normal Mode Seismology?
(paper presented at the GGP workshop in Jena, 3/02
and published in Bull. Seismol. Soc. Am. Vol. 93, p. 1370-1380, 2003)
Seismic sensing and Data Acquisition in the GRSN
(Wielandt, E. and Widmer-Schnidrig, R.
in Ten Years of German Regional Seismic Network (GRSN),
Editor M. Korn, Wiley-Vch publisher, p. 77-83, 2002)
Globale Eigenschwingungen der Erde.
W. Zürn, and R. Widmer-Schnidrig, 2002, Physik Journal Vol. 1, p. 49-55
An optical infrasound sensor: a new lower limit on
the atmospheric pressure noise between 1 Hz and 10 Hz.
Zumberge, M. A. and Berger, J. and Hedlin, M. A. H. and Husmann, E. and Nooner, S. and Hilt, R. and Widmer-Schnidrig, R., 2003, J. Acoust. Soc. Am., Vol. 113, p. 2474-2479
Vertical Acceleration Noise at Seismic Frequencies.
W. Zürn and R. Widmer-Schnidrig, 2003,
Cahiers du centre Europeen de Geodynamique et de Seismologie, Vol. 22, P. 123-128
Free Oscillations: Frequencies and Attenuations (T. G. Masters and R. Widmer, Global Earth Physics, A Handbook of Physical Constants, p. 104-125, 1995)
Observation of low order toroidal modes from the 1989 Macquarie rise event (R. Widmer, W. Zürn and G. Masters, Geophys. J. Int. p. 226-236, Vol. 111, 1992)
On noise reduction in vertical seismic records below 2 mHz using local barometric pressure (W. Zürn and R. Widmer, Geophys. Res. Lett. p. 3537-3540, Vol. 22, 1995)
Evaluation of Installation Methods for Streckeisen STS-2 Seismometers(R. Widmer-Schnidrig and D. Kurrle, 2006, poster presented at the DGG meeting in Bremen)
Spatiotemporal features of the Earth's background oscillations observed in central Europe (D. Kurrle and R. Widmer-Schnidrig, 2006, Geophys. Res. Lett., Vol. 33, L24304, doi:10.1029/2006GL028429)
BFO in den Medien: Berichte zum Sumatra Beben (26. 12. 2004)
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Stuttgart Institute of Geophysics
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Cecil and Ida Green Institute of Geophysics and Planetary Physics