Schwerevariationen durch Erd-Eigenschwingungen 17 global hydrology models. J. Geodesy, 79, 573–585, DOI 10.1007/s00190-005-0014-8. D’Oreye, N., Zürn, W. (2005). Very high resolution long-baseline water-tube tiltmeter to record small signals from Earth free oscillations up to secular tilts Rev. Sci. Instr., 76, 2, pp. 024501 1–12. D’Oreye, N., Zürn, W. (2006). Quarter-Diurnal tides observed with a long-base water-tube tiltmeter in the Grand Duchy of Luxembourg. J. Geodynamics, 41, 175–182. Peterson, J. (1993). Observations and modeling of seismic background noise. U. S. Geol. Surv., Open-file Rep., 93-322, 1– 45. Plag, H.-P. (1997). Chandler Wobble and Pole Tide in Relation to Interannual Atmosphere-Ocean Dynamics. In: Tidal Phenomena (Eds. H. Wilhelm, W. Zürn, H.-G. Wenzel), Lecture Notes in Earth Sciences, 66: 183–218, Springer, Heidelberg. Polom U., S. Stange, K. Bram, W. Brüstle, and T. Forbriger (2006). Normative Klassifizierung des Untergrundes durch Messungen der geschwindigkeit an der Erdbebenstation Lerchenberg (Baden-Württemberg). Geologisches Jahrbuch, Reihe E, Heft 56, ISBN 3-510-95957-4, Seiten 5-37. Polzer, G., Zürn, W. and Wenzel, H.-G. (1996). NDFW Analysis of Gravity, Strain and Tilt Data from BFO. Bull. Inf. Marees Terrestres, 125, 9546–9557. Richter, B., H.-G. Wenzel, W. Zürn and F. Klopping (1995). From Chandler wobble to free oscillations: comparison of cryogenic gravimeters and other instruments in a wide period range. Phys. Earth planet. Inter. 91, 131–148. Richter, B., Zürn, W. (1988). Chandler Effect and Nearly Diurnal Free Wobble as Determined from Observations with a Superconducting <strong>Gravimeter</strong>. Proc. IAU Symposium, 128: Coolfont, Virginia 1986: The Earth’s Rotation and Reference Frames for Geodesy and Geodynamics (A. K. Babcock and G. A. Wilkins, Eds.), IAU, 309–315. Ritter, J.R.R., Balan, S.F., Bonjer, K.P., Diehl, T., Forbriger, T., Mărmureanu, G., Wenzel, F. and Wirth, W. (2005). Broadband urban seismology in the Bucharest metropolitan area. Seism. Res. Lett., 76(5), 574-580. Rogister, Y. (2003). Splitting of seismic-free oscillations and of the Slichter triplet using the normal mode theory of a rotating, ellipsoidal Earth. Physics of the Earth and Planetary Interiors, 140, 169–182. Rosat, S., Sato, T., Imanishi, Y., Hinderer, J., Tamura, Y., McQueen, H. and Ohashi, M., (2005). High resolution analysis of the gravest seismic normal modes after the 2004 Mw=9 Sumatra earthquake using superconducting gravimeter data. Geophys. Res. Lett., 32, L13304, doi:10.1029/2005GL023128. Rydelek, P. A., Zürn, W., Hinderer, J. (1991). On Tidal Gravity, Heat-Flow and Lateral Heterogeneities Phys. Earth Planet. Inter., 68, 215–229. Steffen, H., Kuhlmann, S., Jahr, T. and Kroner, C. (2006). Numerical modelling of the barometric pressure-induced noise in horizontal components for the observatories Moxa and Schiltach. J. Geodyn., 41, 242–252. Van Camp, M. (1999). Measuring seismic normal modes with the GWR C021 superconducting gravimeter. Phys. Earth planet. Inter., 116: 81–92. Westerhaus, M., Zschau, J. (2001). No clear evidence for temporal variations of tidal tilt prior to the 1999 Izmit and Düzce earthquakes in NW-Anatolia. J. Geodetic Soc. Japan, 47, 448–455. Widmer, R., Masters, G., Gilbert, F. (1992). Observably split multiplets - data analysis and interpretation in terms of largescale aspherical structure. Geophys. J. Int., 111: 559–576. Widmer, R., Zürn, W. (1992). Bichromatic excitation of long-period Rayleigh and air waves by the Mount Pinatubo and El Chichón volcanic eruptions. Geophys. Res. Lett. 19: 765– 768. Widmer, R., W. Zürn and T. G. Masters (1992). Observation of Low Order Toroidal Modes from the 1989 Macquarie Rise Event. Geophys. J. Int., 111: 226–236. Widmer-Schnidrig, R. (2002). Application of regionalized multiplet stripping to retrieval of aspherical structure constraints, Geophys. J. Int., 148, 201–213. Widmer-Schnidrig, R. (2003). What can Superconducting <strong>Gravimeter</strong>s contribute to normal mode seismology?. Bull. Seismol. Soc. Am. 93, 1370–1380. Widmer-Schnidrig, R. (2005). Installation und Isolation von STS-2 Seismometern - Plädoyer <strong>für</strong> den Einsatz von Gabbroplatte/Kochtopf Abschirmung beim GRF upgrade. Technischer Bericht <strong>für</strong> die Arbeitsgruppe Seismologie. Wielandt, E. and Widmer-Schnidrig, R. (2002). Seismic sensing and data acquisition in the GRSN, Ten Years of the German Regional Seismic Network (GRSN), Wiley-Vch publisher, Edited by Michael Korn. 73–83. Zaske, J., Zürn, W., Wilhelm, H. (2000). NDFW Analysis of Borehole Water Level Data from the Hot-Dry-Rock Test Site Soultz-sous-Forets. Bull. Inf. Marees Terrestres, 132, 10241–10269. Zürn, W., (1994) Local Observation and Interpretation of Geodynamic Phenomena Acta Geod. Geophys. Hung., 29 (3-4), 339–362. Zürn, W., Rydelek, P. A. (1994) Revisiting the Phasor - Walkout Method for Detailed Investigation of Harmonic Signals in Time Series Surveys in Geophysics, 15, 409–431. Zürn, W., Widmer-Schnidrig, R. (2002). Globale Eigenschwingungen der Erde Physik - Journal, (Physikal. Blätter) 10, 49–55. Zürn, W., Widmer-Schnidrig, R. (2003). Vertical acceleration noise at seismic frequencies. Cah. Centre Europ. Geodyn. Seismol., 22, 123–127. Zürn, W. and Wielandt, E. (2007). On the minimum of vertical seismic noise near 3 mHz. Geophys. J. Int. 168: 647–658. Zürn, W., Richter, B., Rydelek, P. A., Neuberg, J. (1987). Comment: Detection of inertial gravity oscillations in the Earth’s core with a superconducting gravimeter at Brussels. Phys.Earth planet.Inter. 49: 176–178. Zürn, W., Rydelek, P. A., Richter, B. (1986). The Core-resonance Effect in the Record from the Superconducting <strong>Gravimeter</strong> at Bad Homburg. Proc. 10th Int. Symp. Earth Tides, Madrid 1985 (Ed. R. Vieira), Cons. Sup. Invest. Cient., Madrid, 141–147
Schwerevariationen durch Erd-Eigenschwingungen 18 Zürn, W., Richter, B., Rydelek, P. A., Neuberg, J., 1987 Comment: Detection of inertial gravity oscillations in the Earth’s core with a superconducting gravimeter at Brussels. Phys. Earth Planet. Inter., 49, 176–178. Zürn, W., H.-G. Wenzel and G. Laske (1991). High Quality Data from LaCoste-Romberg <strong>Gravimeter</strong>s with Electrostatic Feedback: A Challenge for Superconducting <strong>Gravimeter</strong>s. Bull. Inf. Marées Terrestres 110, 7940–7952. Zürn, W. and Widmer, R. (1995). On noise reduction in vertical seismic records below 2 mHz using local barometric pressure. Geophys. Res. Lett. 22, 3537–3540. Zürn, W., Widmer-Schnidrig, R., Bourguignon, S. (1999). Efficiency of Air Pressure Corrections in the BFO-Records of the Balleny Islands Earthquake, March 25, 1998. Bull. Inf. Marées Terrestres, 131: 10183–10194. Zürn, W., Laske, G., Widmer-Schnidrig, R. and Gilbert, J.F. (2000). Observation of Coriolis coupled modes below 1 mHz, Geophys. J. Int., bf 143, 113–118. Zürn, W. and Wielandt, E. (2007). On the minimum of vertical seismic noise near 3 mHz. Geophys. J. Int. 168: 647–658. Zürn, W., Widmer-Schnidrig, R. (2002). Globale Eigenschwingungen der Erde Physik - Journal, (Physikal. Blätter) 10, 49–55. Zürn, W., Widmer-Schnidrig, R. (2003). Vertical acceleration noise at seismic frequencies. Cah. Centre Europ. Geodyn. Seismol., 22, 123–127. Zürn, W., Exß, J., Steffen, H., Kroner, C., Jahr, T., Westerhaus, M. (2007). On Reduction of Long Period Horizontal Seismic Noise Using Local Barometric Pressure. accepted by Geo- phys. J. Int.
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