Contact

Dr. Andreas Köhler
Department of Geosciences
University of Oslo
PO box 1047, Blindern
0316 Oslo
Norway

Tel.: +47 2285 5723
Fax: +47 2285 4215

ORCID
ResearcherID
Email:

Education and Professional Experience
since 04/2012 Researcher, University of Oslo
11/2011-01/2012 Postdoctoral researcher, University of Aarhus
2009-2011 Postdoctoral researcher, University of Oslo
2005-2009 PhD student, University of Potsdam
Juli, 2005 Summerschool on Helioseismology, Solar Physics Division of the American Astronomical Society, Boulder, Colorado
1999 - 2004 Diploma student (Geophysics), University of Potsdam
Research Interests

Environmental Seismology:
- Glacier- / Cryo- seismicity
- Ambient seismic noise interferometry
- Surface wave tomography / Inversion
- Array seismology
- Pattern recognition and data mining in seismology
- Self-Organizing Maps and Clustering

Current Research Projects
Glacier dynamic ice loss quantified through seismic eyes - CalvingSEIS
Article about CalvingSEIS on titan.uio.no
Previous Research Projects
Seismic Monitoring of glacier activity on Svalbard - SEISMOGLAC (project leader)
Movie of calving event and seismic record
Article about SEISMOGLAC on forskning.no
Surface wave tomography of southern Norway using ambient seismic noise
working in Project TopoScandiaDeep
Ph.D. thesis: Recognition and investigation of temporal patterns in seismic wavefields using unsupervised learning techniques, funded by the University of Potsdam
working in Project NERIES JRA5: Data mining tools
Diploma thesis: Analyse der natürlichen seismischen Bodenunruhe mithilfe der 3-Komponenten räumlichen Autokorrelationsmethode
working in Project SESAME and Project HADU
Publications
Köhler A., Nuth C., Kohler J., Berthier E., Weidle C., Schweitzer J. (2016). A 15 year record of frontal glacier ablation rates estimated from seismic data, Geophysical Research Letters, 10.1002/2016GL070589
Köhler A., Nuth C., Schweitzer J., Weidle C., Gibbons S.J. (2015). Regional passive seismic monitoring reveals dynamic glacier activity on Spitsbergen, Svalbard, Polar Research, 34, 26178, 10.3402/polar.v34.26178
Köhler, A., Maupin V., Balling N. (2015). Surface wave tomography across the Sorgenfrei-Tornquist Zone, SW Scandinavia, using ambient noise and earthquake data, Geophysical Journal International, 203 (1), 284--311, 10.1093/gji/ggv297
Maupin, V., Agostini, A., Artemieva, I., Balling, N., Beekman, F., Ebbing, J., England, RW., Frassetto, A., Gradmann, S., Jacobsen, BH., Köhler A., Kvarven, T., Medhus, AB., Mjelde, R., Ritter, J., Sokoutis, D., Stratford, W., Thybo, H., Wawerzinek, B., Weidle, C. (2013). The deep structure of the Scandes and its relation to tectonic history and present-day topography, Tectonophysics, 602, 15--37
Köhler, A., Weidle, C., and Maupin, V. (2012). Crustal and uppermost mantle structure of southern Norway: Results from surface wave analysis of ambient seismic noise and earthquake data, Geophysical Journal International, 191(3), 1441-1456, 10.1111/j.1365-246X.2012.05698.x
Köhler, A., Chapuis A., Kohler J., Nuth C., and Weidle, C. (2012). Autonomous detection of calving-related seismicity at Kronebreen, Svalbard, The Cryosphere, 6, 393-406, 10.5194/tc-6-393-2012
Köhler, A., Weidle, C., and Maupin, V. (2012). On the effect of topography on surface wave propagation in the ambient noise frequency range, Journal of Seismology, 16(2), 221-231, 10.1007/s10950-011-9264-5
Köhler, A., Weidle, C., and Maupin, V. (2011). Directionality analysis and Rayleigh wave tomography of ambient seismic noise in southern Norway, Geophysical Journal International, 184(1), 287-300, 10.1111/j.1365-246X.2010.04830.x
Köhler, A., Ohrnberger, M., and Scherbaum, F. (2010). Unsupervised pattern recognition in continuous seismic wavefield records using Self-Organizing Maps, Geophysical Journal International, 182(3),1619-1630, 10.1111/j.1365-246X.2010.04709.x
Scherbaum, F., Kuehn, NM, Ohrnberger, M., Köhler, A. (2010). Exploring the proximity of ground-motion models using high-dimensional visualization techniques, Earthquake Spectra, 26(4)
Köhler, A., Ohrnberger, M., and Scherbaum, F. (2009). Unsupervised Feature Selection and General Pattern Discovery Using Self-Organzing Maps for Gaining Insights into the Nature of Seismic Wavefields, Computers and Geosciences, 35(9),1757-1767, 10.1016/j.cageo.2009.02.004
Köhler, A., Ohrnberger, M., Scherbaum, F., Riggelsen, C., and Scherbaum, F. (2008). Unsupervised Feature Selection for Pattern search in Seismic Time Series, Journal of Machine Learning Research. In: Workshop and Conference Proceedings: New Challenges for Feature Selection in Data Mining and Knowledge Discovery, 4,106-121
Bonnefoy-Claudet, S., Köhler, A., Cornou, C., Wathelet, M., and Bard, P.Y. (2008). Effects of Love Waves on Microtremor H/V Ratio, Bulletin of the Seismological Society of America, v. 98, no.1, 288-300, 10.1785/0120070063
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, 10.1111/j.1365-246X.2006.03253.x
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
Papers submitted
Conference Papers
Köhler, A., Ohrnberger, M., Scherbaum, F. (2006). The relative fraction of Rayleigh and Love waves in ambient vibration wavefields at different european sites, Third International Symposium on the Effects of Surface Geology on Seismic Motion Grenoble, France, 30 August – 1 September 2006, Paper Number / Abstract ID : 83
Conference Abstracts (until 2010)
Köhler, A.; Weidle, C., Maupin, V., Surface Wave Tomography of Southern Norway Using Ambient Seismic Noise, 32nd General Assembly of the European Seismological Commission, September 6-10, 2010, Montpellier
Köhler, A.; Weidle, C., Maupin, V., Ambient Seismic Noise Analysis in Southern Norway, 32nd General Assembly of the European Seismological Commission, September 6-10, 2010, Montpellier
Köhler, A.;Chapuis, A., Nuth, C., Weidle, C., Searching for glacier-induced seismic events using an unsupervised pattern recognition scheme based on Self-Organizing Maps, 32nd General Assembly of the European Seismological Commission, September 6-10, 2010, Montpellier
Köhler, A.; Weidle, C., Maupin, V., Ambient Seismic Noise Tomography of Southern Norway, EGU General Assembly, Mai, 2010, Vienna, Geophysical Research Abstracts, Vol. 12, 04049-1, 2010
Köhler, A.; Weidle, C., Maupin, V., Cross-Correlation of Ambient Seismic Noise in Southern Norway, ID-4: Geodynamics of Scandinavian: deep processes and surface response, 29th Nordic Geological Winter Meeting, Oslo 11-13 Jan. 2010
Köhler, A.; Ohrnberger, M.; Scherbaum, F., Unsupervised Feature Selection for Seismic Phase Detection and Event Classification using Self-Organizing Maps and Significance Testing, EGU General Assembly, 2008, Vienna, Geophysical Research Abstracts, Vol. 10, 06335, 2008
Köhler, A.; Ohrnberger, M.; Scherbaum, F., Clustering of seismic signals in wavefields of complex composition using self-organizing maps, EGU General Assembly, 15-20 April, 2007, Vienna, Geophysical Research Abstracts, Vol. 9, 06321, 2007
Riggelsen, C; Ohrnberger, M; Scherbaum, F; Koehler, A., Graphical Models for Automatic Seismic Signal Classification, EGU General Assembly, 15-20 April, 2007, Vienna, Geophysical Research Abstracts, Vol. 9, 07758, 2007
Köhler, A., Ohrnberger, M., Scherbaum, F., Wathelet, M., and Cornou, C., 2005: Assessing the reliability of the modified 3-component spatial autocorrelation technique Geophysical Research Abstracts, Vol. 7, 04056, 2005 (SRef-ID: 1607-7962/gra/EGU05-A-04056)
Köhler A., Ohrnberger, M., Scherbaum, F., Stange, S., and Kind, F., 2004: Ambient vibration measurements in the southern Rhine Graben close to Basle, European Seismological Commission XXIX General Assembly, SCF-3, Potsdam, Germany, September 12-17, 2004.