Group of Geomagnetism

University of Neuchâtel

Southern part of the Swiss declination map (rel. to map North, epoch 1994.0)




Groupe de Géomagnétisme
Université de Neuchâtel
Rue Emile Argand 11
CH 2009 Neuchâtel
Phone: +41 32 718 26 00
Fax: +41 32 718 26 03

What and where? Main topics:

Magnetotelluric (MT) and GDS soundings:

Controlled-source audio-magnetotelluric (CSAMT):

Geomagnetic survey:

AMOS (automatic magnetic observatory station):


Field fluorometers for tracer tests in hydrogeology.


Schnegg, P.-A., 1998. A scheme for 3D MT modelling using polynomials. Protokoll über das 17. Kolloquium "Elektromagnetische Tiefenforschung", Neustadt an der Weinstrasse, 9-13.3.1998.

Gurk, M., 1998. Elektrisch leitfähige Strukturen in den Penninischen und Helvetischen Alpen Graubündens (Ostschweiz). Protokoll über das 17. Kolloquium "Elektromagnetische Tiefenforschung", Neustadt an der Weinstrasse, 9-13.3.1998.

Schnegg, P.-A., 1998. The magnetotelluric survey of the penninic Alps of Valais, in Matériaux pour la Géologie de la Suisse. Géophysique No 32, ISSN 0253-1186.

Schnegg, P.-A. and Kennedy K., 1998. A new borehole fluorometer for double tracer tests, in Mass Transports in Fractured Aquifers and Aquitards, Geoscience Center, Copenhagen.

Schnegg, P.-A., 1999. A procedure for modelling spatiotemporal variations of the geomagnetic field - Example of the 1998 model for Switzerland. Revista Geofisica, 48, 133-140, ISSN-0252-9769.

Gurk, M., 1999. Magnetic Distortion of GDS Transfer Functions: An Example from the Penninic Alps of Eastern Switzerland Revealing a Crustal Conductor. Earth Planets Space, 51, pp. 1023-1034.

Schnegg, P.-A., 1999. A Computing Method for 3D Magnetotelluric Modelling Directed by Polynomials. Earth Planets Space, 51, pp. 1005-1012.

Bosch, F., Gurk, M., 2000. Comparison of RF-EM, RMT and SP measurements on a karstic terrain in the Jura mountains (Switzerland). Protokoll über das 18. Kolloquium "Elektromagnetische Tiefenforschung", Altenberg, 20-24.3.2000.

Gurk, M., 2000. On the distribution of the electrical conductivity in the Central Alps, in Matériaux pour la Géologie de la Suisse. Géophysique No 35, ISSN 0253-1186 

Schnegg, P.-A. and Bossy, F., 2001. Sonde for Downhole Measurement of Water Turbidity and Dye Tracer Concentration, in: New Approaches Characterizing Groundwater Flow, Seiler & Wohnlich (eds), 2001 Swets & Zeitlinger Lisse, ISBN 902651 848 X

Kennedy, K., Müller, I., Schnegg, P.-A., Rossi, P., Kozel, R., 2001.Characterization of the Kappelen Groundwater Research Site (BE), Switzerland, and Preliminary Bacteriophage and Solute Tracer Component Responses. Beiträge zur Hydrogeologie, pp. 158-180.

Kennedy, K., Niehren, S., Rossi, P., Schnegg, P.-A., Müller, I., Kinzelbach, W., 2001. Results of Bacteriophage, Microsphere and Solute Tracer Migration Comparison at Wilerwald Test Field, Switzerland. Beiträge zur Hydrogeologie, pp. 180-210.

Gurk, M. and Schnegg, P.-A., 2001. Anomalous directional behaviour of the real parts of the induction arrows in the Eastern Alps: tectonic and paleogeographic implications. Ann. Geofisica Vol. 44, N. 4, 659-669.

Losito, G., Schnegg, P.-A., Lambelet, C., Viti, C., Trova, A., 2001. Microscopic scale conductivity as explanation of MT results from the Alps of Western Switzerland. Geophys. J. Int., 147, 602-609.

Gurk, M., Bosch, F., Challandes, N., Bigalke, J., 2001. Integration of geophysical methods to study the fold geometry of the Tschera nappe, eastern Switzerland. Eclogae geol. Helv. 94, 329-338.

Gurk, M., Bosch, F. 2001. Cave detection using the Self-Potential-Surface (SPS) technique on a karstic terrain in the Jura mountains (Switzerland). Protokoll über das 19. Kolloquium "Elektromagnetische Tiefenforschung", Burg Ludwigstein, 1-5.10.2001.

Schnegg, P.-A., 2002. An inexpensive field fluorometer for hydrogeological tracer tests with three tracers and turbidity measurement. XXXII IAH & ALHSUD Congress Groundwater and Human Development. Balkema, Mar del Plata, Argentina, pp. 1484-1488.

Schnegg, P.-A. and Fontes, S.L., 2002. Feasibility study of the geoelectric structure of the Araguainha impact, Brazil. Earth Planets Space, 54, pp. 597-606.

Schnegg, P.-A. and Flynn, R., 2002. Online field fluorometers for hydrogeological tracer tests. In: Isotope und Tracer in der Wasserforschung, Technische Universität Bergakademie Freiberg, Wissenschaftliche Mitteilungen, Institut für Geologie, 19, pp 29-36.

Pous, J., Heise, W., Schnegg, P.-A., Muñoz, G., Martí, J., Soriano, C., 2002. Magnetotelluric study of the Las Cañadas caldera (Tenerife, Canary Islands): Structural and hydrogeological implications, Earth Planet. Sci. Lett. 204, 249-263.

Schnegg, P.-A., 2003. A new field fluorometer for multi-tracer tests and turbidity measurement applied to hydrogeological problems. Proc. 8th International Congress of the Brazilian Geophysical Society, Rio de Janeiro, Brazil.

Schnegg, P.-A., Costa, R., 2003. Tracer tests made easier with field fluorometers. Technical note. Bull. Hydrogeol. 20, 2 pp.

Mekkawi, M., Grasso, J.-R., Schnegg, P.-A., 2004. A long-lasting relaxation of seismicity at Aswan reservoir, Egypt, 1982-2001. Bull. Seism. Soc. Am. 94, 479-492.

Mekkawi, M., Schnegg, P.-A., 2004. Les barrages à l'origine de tremblements de terre. Revue Tracés, 19, 7-11.

Valley, B., Burkhard, M. and Schnegg, P.-A., 2004. Dépliage 3-D des anticlinaux bordant le synclinal fermé de la vallée des Ponts, Jura central, Suisse. Eclogae geol. Helv., 97: 279-291.

Adepelumi, A.A., Flexor, J.M., Fontes, S.L. and Schnegg, P.-A., 2004. An integrated magnetotelluric and aeromagnetic investigation of the Serra da Cangalha impact crater, Brazil. Phys. Earth Planet. Inter., 150/1-3: 159-181.

Flynn, R., Schnegg, P.-A., Costa, R., Mallen, G., Zwahlen, F., 2005. Identification of zones of preferential groundwater tracer transport using a mobile downhole fluorometer. Hydrogeology J. 13, 366-377.

Mekkawi, M., Schnegg, P.-A., Arafa-Hamed, T., Elathy, E., 2005. Electrical structure of the tectonically active Kalabsha Fault, Aswan, Egypt. Earth Planet. Sci. Lett. 240, 764-773.

Schnegg, P.-A., Le Doucen, O., 2006. Multispectral field fluorometer for tracer tests in waters of high natural fluorescence. In: Durán, J.J., Andreo, B. y Carrasco, F. (Eds.). Karst, climate change and groundwater. Hidrogeologia y Aguas Subterráneas N°18. 77-80. Madrid.

Meus, Ph., Käss, W., Schnegg, P.-A., 2006. Background and detection of fluorescent tracers in karst groundwater. In: Durán, J.J., Andreo, B. y Carrasco, F. (Eds.). Karst, climate change and groundwater. Hidrogeologia y Aguas Subterráneas N°18. 65-75. Madrid.

Coppo, N., Schnegg, P.-A., Défago, M., GSCB, 2006. Mapping a shallow large cave using a high-resolution Very Low Frequency Electromagnetic method. In: Goldscheider, N., Mudry, J., Savoy, L., Zwahlen, F. (Eds.). Proc. 8th Conference on limestone hydrogeology, Neuchâtel, September 21-23, 2006, pp 71-74.

Gottsmann, J., Carniel, R., Coppo, N., Wooller, L., Hautmann, S., Rymer, H., 2007. Oscillations in hydrothermal systems as a source of periodic unrest at caldera volcanoes: Multiparameter insights from Nisyros, Greece. Geophys. Res. Lett., 34, L07307, doi: 10.1029/2007GL029594

Coppo, N., Schnegg, P.-A., Heise, W., Falco, P., Costa, R., 2008. Multiple caldera collapses inferred from the shallow electrical resistivity signature of the Las Cañadas caldera, Tenerife, Canary Islands. Journal of Volcanology and Geothermal Research 170, 153–166.

Coppo, N., Schnegg, P.-A., Falco, P., Costa, R., Burkhard, M., 2008. Structural pattern of the western Las Cañadas caldera (Tenerife, Canary Islands) revealed by audiomagnetotellurics. Swiss J. Geosci. 101, 409-413.

Coppo, N., Schnegg, P.-A., Falco, P., Costa, R., 2009. A deep scar in the flank of Tenerife (Canary Islands): Geophysical contribution to tsunami hazard assessment. Earth and Planetary Sci. Lett. 282, 65-68.


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Last revision 04.02.2016 ®P.-A. Schnegg