Dr. Matthias Ohrnberger
Contact
University of Potsdam,
Institute of Earth and Environmental Science
Dr. Matthias Ohrnberger
Building 27, Room 1.37
Karl-Liebknecht-Str. 24-25
14476 Potsdam-Golm
- E-mail:
- mao@geo.uni-potsdam.de
- Phone:
- +49 331 977 5785
- Fax:
- +49 331 977 5700
- Biography
- Research
- Teaching
- Publications
Biography
- since 2005
- Research associate with teaching obligations (University of Potsdam)
- 2003-2005
- Research associate with teaching obligations (University of Potsdam)
- 2001-2003
- Post-Doc - FP5-EU-Project SESAME (University of Potsdam)
- 2001
- Doctor rer. nat. in Geophysics (University of Potsdam)
- 1994
- Diploma in Geophysics (LMU Munich)
Research
- Ambient vibrations and their use for quantitative structural imaging using array techniques
- Continuous monitoring of microseismicity
- Digital signal processing of array data
- Detection/Classification of seismological waveform data
- PR and AI techniques applied to large geophysical datasets
Teaching
- International training course on microtremor array analysis SESARRAY (www.geopsy.org)
Editions in:
- Grenoble, France (2005),
- Potsdam, Germany (2006)
- Caracas, Venezuela (2006)
- Algiers, Algeria (2007)
- Bangalore, India (2007)
- Istanbul, Turkey (2008)
- Thessaloniki, Greece (2008)
- Thessaloniki, Greece (2010)
- Las Vegas, USA (2012) - International training course Array-Seismology (IUGG/IASPEI)
XXIV IUGG General Assembly - June, 30th to July 3rd, 2007 - Arezzo, Italy - Introductory Seismology (Seismologie I)
- Introduction to programming in C
- Array Seismology (Field Trips: Arezzo, Italy (2005); Hamburg (2006); Lüneburg (2007); Neuhausen-Erzgebirge (2008), Hochstaufen, Bad Reichenhall (2009), Horstwalde (2010), Heumöser Hang (2011))
- Discrete Inverse Theory
- MEEES Course on "Non-invasive site characterization" (Grenoble Feb. 2011) as part of the Erasmus Mundus Master program.
Publications
|
Hammer, C., and M. Ohrnberger, 2012. Forecasting seismo-volcanic activity by using the dynamical behavior of volcanic earthquake rates, Journal of Volcanology and Geothermal Research, online February 8th, 2012; DOI: 10.1016/j.jvolgeores.2012.01.016 |
|
Blaser, L., Ohrnberger, M., Krüger, F., and F. Scherbaum, 2012. Probabilistic tsunami threat assessment of 10 recent earthquakes offshore Sumatra, Geophysical Journal International, 188(3), 1273--1284; DOI: 10.1111/j.1365-246X.2011.05324.x |
|
Beyreuther, M., Hammer, C., Wassermann, J., Ohrnberger, M., and T. Megies, 2012. Constructing a Hidden Markov Model based earthquake detector: application to induced seismicity, Geophysical Journal International; DOI: 10.1111/j.1365-246X.2012.05361.x |
|
Kühn, D., Ohrnberger, M., and T. Dahm, 2011, Imaging a shallow salt diapir using ambient seismic vibrations beneath the densely built-up city area of Hamburg, Northern Germany, Journal of Seismology, 15, 507-531, DOI: 10.1111/10.1007/s10950-011-9234-y |
|
Blaser, L., Ohrnberger, M., Riggelsen, C., Babeyko, A. and Scherbaum, F., 2011, Bayesian Networks for Tsunami Early Warning, Geophysical Journal International, 185(3), 1431-1443, DOI: 10.1111/j.1365-246X.2011.05020.x |
| Blaser, L., Krüger, F., Ohrnberger, M., and F. Scherbaum, 2010: Scaling relations of earthquake source parameter estimates with special focus on subduction environment, BSSA, 100(6), pp. 2912-2926. (doi:10.1785/0120100111). |
| Köhler, A., Ohrnberger, M., and F. Scherbaum, 2010: Unsupervised Pattern Recognition in Continuous Seismic Wavefield Records using Self-Organizing Maps, GJI, 182, pp. 1619-1630. (doi: 10.1111/j.1365-246X.2010.04709.x) |
| Cristiano, L., Petrosino, S., Saccorotti, G., Ohrnberger, M., and R. Scarpa, 2010: Shear-wave velocity structure at Mt. Etna from inversion of Rayleigh-wave dispersion patterns (2 s < T < 20 s), ANNALS OF GEOPHYSICS, 53, 2, APRIL 2010; doi: 10.4401/ag-4574. |
| Scherbaum, F., Kühn, N., Ohrnberger, M., and a. Köhler, 2010: Exploring the Proximity of Ground-Motion Models Using High-Dimensional Visualization Techniques Earthquake Spectra, 26(4), pp. 1117–1138. |
| Roessler, d., Krueger, f., Ohrnberger, M., and L. Ehlert, 2010: Rapid characterisation of large earthquakes by multiple seismic broadband arrays, Nat. Hazards Earth Syst. Sci., 10, 923-932, 2010. direct link, doi:10.5194/nhess-10-923-2010. |
| Dahm, T., Kühn, D., Ohrnberger, M., Kröger, J., Wiederhold, H., Reuther, C.-D., Dehghani, A. and F. Scherbaum, 2010: Combining geophysical data sets to study the dynamics of shallow evaporites in urban environments: application to Hamburg, Germany, Geophysical Journal International, Volume 181, Issue 1, Pages 154 - 172, Published Online: 22 Feb 2010 direct link. |
| Endrun, B., Ohrnberger, M., and A. Savvaidis, 2009: On the repeatability and consistency of three-component ambient vibration array measurements, Bull. Earthquake Eng., doi: 10.1007/s10518-009-9159-9, |
| Blaser, L., Ohrnberger, M., Riggelsen, C. and F. Scherbaum, 2009: Bayesian Belief Network for Tsunami Warning Decision Support, in: C. Sossai and G. Chemello (Eds.): ECSQARU 2009, LNAI 5590, pp. 757 -- 768, 2009. (link to article) |
| Köhler, A. Ohrnberger, M., and F. Scherbaum, 2009: Unsupervised feature selection and general pattern discovery using Self-Organizing Maps for gaining insights into the nature of seismic wavefields, Computers and Geosciences (2009), doi:10.1016/j.cageo.2009.02.004. |
| Tuan, T.T., Malischewsky, P.G., Scherbaum, F. and M. Ohrnberger, 2008: Dispersion of zero-frequency Rayleigh waves in an isotropic model 'Layer over half-space' Geophysical Journal International, 175(2), pp. 537-540, doi:10.1111/j.1365-246X.2008.03917.x. |
| Köhler, A., Ohrnberger, M., Riggelsen, C. and F. Scherbaum, 2008: Unsupervised Feature Selection for Pattern Discovery in Seismic Wavefields, FSDM Workshop, European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECML PKKD), 15-19 September 2008, Antwerp, Belgium. |
| Kulesh, M. Holschneider, M., Ohrnberger, M., and E. Lück, 2008: Modeling of Wave Dispersion Using Continuous Wavelet Transforms II: Wavelet Based Frequency-Velocity Analysis, Pure appl. geophys., 165, 255-270, 2008. |
| Wathelet, M., Jongmans, D., Ohrnberger, M., and Bonnefoy-Claudet, S. (2008). Array performances for ambient vibrations on a shallow structure and consequences over VS inversion, Journal of Seismology, 12, 1-19, 2008. |
| Guillier, B., Atakan, K., Chatelain, J.-L., Havskov, J., Ohrnberger, M., Cara, F., Duval, A.-M., Zacharopoulos, S., Teves-Costa, P., and the SESAME Team (2008). Influence of instruments on the H/V spectral ratios of ambient vibrations, Bulletin of Earthquake Engineering, Vol 6, No. 1, 3-31, 2008. |
| Riggelsen, C., Ohrnberger, M., Scherbaum, F. (2007). Dynamic Bayesian Networks for Real-Time Classification of Seismic Signals, J.N. Kok et al. (Eds.): PKDD 2007, LNAI 4702, pp. 565-572, 2007. Springer-Verlag Berlin Heidelberg 2007. |
| Kulesh, M., Diallo, M., Holschneider, M., Kurennaya, K., Krüger, F., Ohrnberger, M.,, and Scherbaum, F. (2007). Polarization Analysis in Wavelet Domain Based on the Adaptive Covariance Method, Geophysical Journal International, 170 (2), 667-678, doi:10.1111/j.1365-246X.2007.03417.x |
| Reuther, C.-D., Burmann, N., Kühn, D., Ohrnberger, M.,, Dahm, T., and Scherbaum, F., 2007: Erkundung des unterirdischen Raumes der Metropolregion Hamburg: Das Projekt HADU (Hamburg - A Dynamic Underground) Geotechnik 30/1: 11-20. |
| Köhler, A., Ohrnberger, M., Scherbaum, F., Wathelet, M., and Cornou, C. (2007). Assessing the reliability of the modified three-component spatial autocorrelation technique, Geophysical Journal International 168 (2), 779-796. doi:10.1111/j.1365-246X.2006.03253.x |
| Alasonati, P., Wassermann J., and Ohrnberger, M.,, 2006: Signal classification by wavelet-based hidden Markov models: application to seismic signals of volcanic origin, in: H.M. Mader, S.G. Coles, C.B. Connor and L.J. Connor (eds.), Statistics in Volcanology, Special Publications of IAVCEI, 1, Geological Society, London, 161-174. |
| G. Di Giulio, C. Cornou, M. Ohrnberger, M. Wathelet, A. Rovelli, 2006: Deriving Wavefield Characteristics and Shear-Velocity Profiles from Two-dimensional Small-Aperture Arrays Analysis of Ambient Vibrations in a Small-Size Alluvial Basin, Colfiorito, Italy, BSSA, Vol. 96, No. 5, pp. 1915-1933, October 2006, doi:10.1785/0120060119. |
| Krüger, F. and Ohrnberger, M., 2005: Spatio-temporal source characteristics of the 26 December 2004 Sumatra earthquake as imaged by teleseismic broadband arrays, Geophys. Res. Lett., Vol. 32, No. 24, L24312, doi:10.1029/2005GL023939. view abstract |
| M. Holschneider, M. S. Diallo, M. Kulesh, M. Ohrnberger, E. Lück, F. Scherbaum, 2005: Characterization of dispersive surface waves using continuous wavelet transforms, Geophys. J. Int., 163(2), 463-478, doi:10.1111/j.1365-246X.2005.02787.x. view abstract |
| M. Wathelet, D. Jongmans, M. Ohrnberger, 2005: Direct inversion of spatial auto-correlation with the neighbourhood algorithm, Bull. Seism. Soc. Am., 95(5), 1787-1800. (view abstract) |
| Krüger F. and Ohrnberger, M., 2005: Tracking the rupture of the Mw = 9.3 Sumatra earthquake over 1,150 km at teleseismic distance, Nature 435, 937-939 (16 June 2005). (doi: 10.1038/nature03696). |
| Köhler A., Ohrnberger, M., Scherbaum, F., Stange, S., and Kind, F., 2004: Ambient vibration measurements in the southern Rhine Graben close to Basle, Annals of Geophysics, 47(6), pp. 1771-1781. |
| Wathelet, M., Jongmans, D., and Ohrnberger, M., 2004: Surface wave inversion using a direct search algorithm and its application to ambient vibration measurements, Near Surface Geophysics, 2, pp. 211-221. |
| M. Ohrnberger, F. Scherbaum, F. Krüger, R. Pelzing and Sh.-K. Reamer, 2004: How good are shear wave velocity models obtained from inversion of ambient vibrations in the Lower Rhine Embayment (NW-Germany), Boll. Geof. Teor. Appl., 45(3), pp. 215-232. |
| G. Richter, J. Wassermann, M. Zimmer, and M. Ohrnberger, 2004: Correlation of seismic activity and fumarole temperature at the Mt. Merapi volcano (Indonesia) in 2000, J. Volcanol. Geotherm. Res., 135, pp. 331-342. |
| F. Scherbaum, K.-G. Hinzen and M. Ohrnberger, 2003: Determination of shallow shear wave velocity profiles in the Cologne, Germany area using ambient vibrations, Geophys. J. Int., 152, 597-612. |
| J. Wassermann and M. Ohrnberger, 2001: Automatic hypocenter determination of volcano induced seismic transients based on wavefield coherence - an application to the 1998 eruption of Mt. Merapi, Indonesia, J. Volcanol. Geotherm. Res., 110, 57-77. |
Biography
- since 2005
- Research associate with teaching obligations (University of Potsdam)
- 2003-2005
- Research associate with teaching obligations (University of Potsdam)
- 2001-2003
- Post-Doc - FP5-EU-Project SESAME (University of Potsdam)
- 2001
- Doctor rer. nat. in Geophysics (University of Potsdam)
- 1994
- Diploma in Geophysics (LMU Munich)
Research
- Ambient vibrations and their use for quantitative structural imaging using array techniques
- Continuous monitoring of microseismicity
- Digital signal processing of array data
- Detection/Classification of seismological waveform data
- PR and AI techniques applied to large geophysical datasets
Teaching
- International training course on microtremor array analysis SESARRAY (www.geopsy.org)
Editions in:
- Grenoble, France (2005),
- Potsdam, Germany (2006)
- Caracas, Venezuela (2006)
- Algiers, Algeria (2007)
- Bangalore, India (2007)
- Istanbul, Turkey (2008)
- Thessaloniki, Greece (2008)
- Thessaloniki, Greece (2010)
- Las Vegas, USA (2012) - International training course Array-Seismology (IUGG/IASPEI)
XXIV IUGG General Assembly - June, 30th to July 3rd, 2007 - Arezzo, Italy - Introductory Seismology (Seismologie I)
- Introduction to programming in C
- Array Seismology (Field Trips: Arezzo, Italy (2005); Hamburg (2006); Lüneburg (2007); Neuhausen-Erzgebirge (2008), Hochstaufen, Bad Reichenhall (2009), Horstwalde (2010), Heumöser Hang (2011))
- Discrete Inverse Theory
- MEEES Course on "Non-invasive site characterization" (Grenoble Feb. 2011) as part of the Erasmus Mundus Master program.
Publications
|
Hammer, C., and M. Ohrnberger, 2012. Forecasting seismo-volcanic activity by using the dynamical behavior of volcanic earthquake rates, Journal of Volcanology and Geothermal Research, online February 8th, 2012; DOI: 10.1016/j.jvolgeores.2012.01.016 |
|
Blaser, L., Ohrnberger, M., Krüger, F., and F. Scherbaum, 2012. Probabilistic tsunami threat assessment of 10 recent earthquakes offshore Sumatra, Geophysical Journal International, 188(3), 1273--1284; DOI: 10.1111/j.1365-246X.2011.05324.x |
|
Beyreuther, M., Hammer, C., Wassermann, J., Ohrnberger, M., and T. Megies, 2012. Constructing a Hidden Markov Model based earthquake detector: application to induced seismicity, Geophysical Journal International; DOI: 10.1111/j.1365-246X.2012.05361.x |
|
Kühn, D., Ohrnberger, M., and T. Dahm, 2011, Imaging a shallow salt diapir using ambient seismic vibrations beneath the densely built-up city area of Hamburg, Northern Germany, Journal of Seismology, 15, 507-531, DOI: 10.1111/10.1007/s10950-011-9234-y |
|
Blaser, L., Ohrnberger, M., Riggelsen, C., Babeyko, A. and Scherbaum, F., 2011, Bayesian Networks for Tsunami Early Warning, Geophysical Journal International, 185(3), 1431-1443, DOI: 10.1111/j.1365-246X.2011.05020.x |
| Blaser, L., Krüger, F., Ohrnberger, M., and F. Scherbaum, 2010: Scaling relations of earthquake source parameter estimates with special focus on subduction environment, BSSA, 100(6), pp. 2912-2926. (doi:10.1785/0120100111). |
| Köhler, A., Ohrnberger, M., and F. Scherbaum, 2010: Unsupervised Pattern Recognition in Continuous Seismic Wavefield Records using Self-Organizing Maps, GJI, 182, pp. 1619-1630. (doi: 10.1111/j.1365-246X.2010.04709.x) |
| Cristiano, L., Petrosino, S., Saccorotti, G., Ohrnberger, M., and R. Scarpa, 2010: Shear-wave velocity structure at Mt. Etna from inversion of Rayleigh-wave dispersion patterns (2 s < T < 20 s), ANNALS OF GEOPHYSICS, 53, 2, APRIL 2010; doi: 10.4401/ag-4574. |
| Scherbaum, F., Kühn, N., Ohrnberger, M., and a. Köhler, 2010: Exploring the Proximity of Ground-Motion Models Using High-Dimensional Visualization Techniques Earthquake Spectra, 26(4), pp. 1117–1138. |
| Roessler, d., Krueger, f., Ohrnberger, M., and L. Ehlert, 2010: Rapid characterisation of large earthquakes by multiple seismic broadband arrays, Nat. Hazards Earth Syst. Sci., 10, 923-932, 2010. direct link, doi:10.5194/nhess-10-923-2010. |
| Dahm, T., Kühn, D., Ohrnberger, M., Kröger, J., Wiederhold, H., Reuther, C.-D., Dehghani, A. and F. Scherbaum, 2010: Combining geophysical data sets to study the dynamics of shallow evaporites in urban environments: application to Hamburg, Germany, Geophysical Journal International, Volume 181, Issue 1, Pages 154 - 172, Published Online: 22 Feb 2010 direct link. |
| Endrun, B., Ohrnberger, M., and A. Savvaidis, 2009: On the repeatability and consistency of three-component ambient vibration array measurements, Bull. Earthquake Eng., doi: 10.1007/s10518-009-9159-9, |
| Blaser, L., Ohrnberger, M., Riggelsen, C. and F. Scherbaum, 2009: Bayesian Belief Network for Tsunami Warning Decision Support, in: C. Sossai and G. Chemello (Eds.): ECSQARU 2009, LNAI 5590, pp. 757 -- 768, 2009. (link to article) |
| Köhler, A. Ohrnberger, M., and F. Scherbaum, 2009: Unsupervised feature selection and general pattern discovery using Self-Organizing Maps for gaining insights into the nature of seismic wavefields, Computers and Geosciences (2009), doi:10.1016/j.cageo.2009.02.004. |
| Tuan, T.T., Malischewsky, P.G., Scherbaum, F. and M. Ohrnberger, 2008: Dispersion of zero-frequency Rayleigh waves in an isotropic model 'Layer over half-space' Geophysical Journal International, 175(2), pp. 537-540, doi:10.1111/j.1365-246X.2008.03917.x. |
| Köhler, A., Ohrnberger, M., Riggelsen, C. and F. Scherbaum, 2008: Unsupervised Feature Selection for Pattern Discovery in Seismic Wavefields, FSDM Workshop, European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECML PKKD), 15-19 September 2008, Antwerp, Belgium. |
| Kulesh, M. Holschneider, M., Ohrnberger, M., and E. Lück, 2008: Modeling of Wave Dispersion Using Continuous Wavelet Transforms II: Wavelet Based Frequency-Velocity Analysis, Pure appl. geophys., 165, 255-270, 2008. |
| Wathelet, M., Jongmans, D., Ohrnberger, M., and Bonnefoy-Claudet, S. (2008). Array performances for ambient vibrations on a shallow structure and consequences over VS inversion, Journal of Seismology, 12, 1-19, 2008. |
| Guillier, B., Atakan, K., Chatelain, J.-L., Havskov, J., Ohrnberger, M., Cara, F., Duval, A.-M., Zacharopoulos, S., Teves-Costa, P., and the SESAME Team (2008). Influence of instruments on the H/V spectral ratios of ambient vibrations, Bulletin of Earthquake Engineering, Vol 6, No. 1, 3-31, 2008. |
| Riggelsen, C., Ohrnberger, M., Scherbaum, F. (2007). Dynamic Bayesian Networks for Real-Time Classification of Seismic Signals, J.N. Kok et al. (Eds.): PKDD 2007, LNAI 4702, pp. 565-572, 2007. Springer-Verlag Berlin Heidelberg 2007. |
| Kulesh, M., Diallo, M., Holschneider, M., Kurennaya, K., Krüger, F., Ohrnberger, M.,, and Scherbaum, F. (2007). Polarization Analysis in Wavelet Domain Based on the Adaptive Covariance Method, Geophysical Journal International, 170 (2), 667-678, doi:10.1111/j.1365-246X.2007.03417.x |
| Reuther, C.-D., Burmann, N., Kühn, D., Ohrnberger, M.,, Dahm, T., and Scherbaum, F., 2007: Erkundung des unterirdischen Raumes der Metropolregion Hamburg: Das Projekt HADU (Hamburg - A Dynamic Underground) Geotechnik 30/1: 11-20. |
| Köhler, A., Ohrnberger, M., Scherbaum, F., Wathelet, M., and Cornou, C. (2007). Assessing the reliability of the modified three-component spatial autocorrelation technique, Geophysical Journal International 168 (2), 779-796. doi:10.1111/j.1365-246X.2006.03253.x |
| Alasonati, P., Wassermann J., and Ohrnberger, M.,, 2006: Signal classification by wavelet-based hidden Markov models: application to seismic signals of volcanic origin, in: H.M. Mader, S.G. Coles, C.B. Connor and L.J. Connor (eds.), Statistics in Volcanology, Special Publications of IAVCEI, 1, Geological Society, London, 161-174. |
| G. Di Giulio, C. Cornou, M. Ohrnberger, M. Wathelet, A. Rovelli, 2006: Deriving Wavefield Characteristics and Shear-Velocity Profiles from Two-dimensional Small-Aperture Arrays Analysis of Ambient Vibrations in a Small-Size Alluvial Basin, Colfiorito, Italy, BSSA, Vol. 96, No. 5, pp. 1915-1933, October 2006, doi:10.1785/0120060119. |
| Krüger, F. and Ohrnberger, M., 2005: Spatio-temporal source characteristics of the 26 December 2004 Sumatra earthquake as imaged by teleseismic broadband arrays, Geophys. Res. Lett., Vol. 32, No. 24, L24312, doi:10.1029/2005GL023939. view abstract |
| M. Holschneider, M. S. Diallo, M. Kulesh, M. Ohrnberger, E. Lück, F. Scherbaum, 2005: Characterization of dispersive surface waves using continuous wavelet transforms, Geophys. J. Int., 163(2), 463-478, doi:10.1111/j.1365-246X.2005.02787.x. view abstract |
| M. Wathelet, D. Jongmans, M. Ohrnberger, 2005: Direct inversion of spatial auto-correlation with the neighbourhood algorithm, Bull. Seism. Soc. Am., 95(5), 1787-1800. (view abstract) |
| Krüger F. and Ohrnberger, M., 2005: Tracking the rupture of the Mw = 9.3 Sumatra earthquake over 1,150 km at teleseismic distance, Nature 435, 937-939 (16 June 2005). (doi: 10.1038/nature03696). |
| Köhler A., Ohrnberger, M., Scherbaum, F., Stange, S., and Kind, F., 2004: Ambient vibration measurements in the southern Rhine Graben close to Basle, Annals of Geophysics, 47(6), pp. 1771-1781. |
| Wathelet, M., Jongmans, D., and Ohrnberger, M., 2004: Surface wave inversion using a direct search algorithm and its application to ambient vibration measurements, Near Surface Geophysics, 2, pp. 211-221. |
| M. Ohrnberger, F. Scherbaum, F. Krüger, R. Pelzing and Sh.-K. Reamer, 2004: How good are shear wave velocity models obtained from inversion of ambient vibrations in the Lower Rhine Embayment (NW-Germany), Boll. Geof. Teor. Appl., 45(3), pp. 215-232. |
| G. Richter, J. Wassermann, M. Zimmer, and M. Ohrnberger, 2004: Correlation of seismic activity and fumarole temperature at the Mt. Merapi volcano (Indonesia) in 2000, J. Volcanol. Geotherm. Res., 135, pp. 331-342. |
| F. Scherbaum, K.-G. Hinzen and M. Ohrnberger, 2003: Determination of shallow shear wave velocity profiles in the Cologne, Germany area using ambient vibrations, Geophys. J. Int., 152, 597-612. |
| J. Wassermann and M. Ohrnberger, 2001: Automatic hypocenter determination of volcano induced seismic transients based on wavefield coherence - an application to the 1998 eruption of Mt. Merapi, Indonesia, J. Volcanol. Geotherm. Res., 110, 57-77. |