Ramon Egli

Ramon Egli Dr. sc. nat.
Institute for Rock Magnetism Newton Horace Winchell School of Earth Sciences
University of Minnesota	Telephone: +1 612 625 9985
219 Shepard Laboratories	Facisimile: +1 612 625 7502
Minneapolis, MN 55455-0128	e-mail: eglix007@umn.edu
USA

Research Interests

Rock magnetism

Acquisition of anhysteretic remanent magnetisation in fine SD particles [2]. Investigation of the ARM/IRM ratio of fine magnetic particles, and its use as a grain size indicator.
Models for the statistical distribution of the rock magnetic properties of natural magnetic minerals and its implementation in unmixing methods [6].
Rock magnetic properties of magnetosomes in natural sediments (magnetite and greigite particles and chain of particles produced by magnetotactic bacteria), and their dependence on redox conditions [5,7].

Methods

High-resolution magnetic imaging with SQUID magnetometers [1].
Development of a software for the coercivity distribution analysis of natural magnetic mineral assemblages [3].

Environmental magnetism

Unmixing magnetic mineral assemblages in various natural materials such as: marine and lacustrine sediments, loesses, soils, palaeosols, limestones, urban dust [5].
The iron cycle in lakes, with special regard to the central role of biogenic magnetite [7].
Development of a fast, inexpensive methods for the quantitative estimation of urban pollution with active and passive sampling methods [8].

Crustal movements in Switzerland

Integration of recent GPS measurements, geological structures and earthquakes in order to develop a kinematic model of crustal movements in Switzerland.

CV en bref

1990 - 1993    Study of Physics, ETH Zürich, Switzerland.
1993 - 1998    Study of Earth Sciences, ETH Zürich, Switzerland, Dipl. Natw. ETH,
1998 - 2003    Doctoral Thesis, ETH Zürich, Switzerland, Dr. sc. nat.
2003 - 2004    Research associate at the Institute of Geodesy and Photogrammetry, ETH Zürich, Switzerland.
since 2004    Postdoctoral studies at the Institute for Rock Magnetism, University of Minnesota, USA.

Honours

1998 Award for best examination results and silver medal of the ETH for best diploma thesis

Publications

[1] R. Egli and F. Heller, High-resolution imaging using a high-Tc superconducting quantum interference device (SQUID) magnetometer, Journal of Geophysical Research, 105, 25 709 - 25 727, 2000.

[2] R. Egli and W. Lowrie, Anhysteretic remanent magnetization of fine magnetic particles, Journal of Geophysical Research, 107 (B10), 2209, doi 10.1029/2001J B000671, 2002.

[3] R. Egli, Analysis of the field dependence of remanent magnetization curves, Journal of Geophysical Research, 108 (B2), 2081, doi 10.1029/2002JB002023, 2003.

[4] R. Ravazzi, R. Rini, M. Breda, E. Martinetto, G. Muttoni, S. Chiesa, F. Confortini, and R. Egli, The lacustrine deposits of Fornaci di Ranica (late Early Pleistocene, Italian Pre- Alps): stratigraphy, palaeoenvironment and geological evolution, Quaternary International, in press.

[5] R. Egli, Characterization of individual rock magnetic components by analysis of remanence curves, 1. Unmixing natural sediments, Studia geophysica et geodaetica, 48, 391-446, 2004.

[6] R. Egli, Characterization of individual rock magnetic components by analysis of remanence curves, 2. Rock magnetism of individual components, submitted to: Physics and Chemistry of the Earth, special issue on magnetism, EGS-AGU-EUG, Nice, 2003.

[7] R. Egli, Characterization of individual rock magnetic components by analysis of remanence curves, 3. Biogenic magnetite and natural processes in lakes, submitted to: Physics and Chemistry of the Earth, special issue on magnetism, EGS-AGU-EUG, Nice, 2004.

[8] S. Spassov, R. Egli, F. Heller, D.K. Nourgaliev and J.A. Hannam, Discrimination of atmospheric particulate matter sources with magnetic methods, Geophysical Journal International, 155, pp. 555-564, 2004.

[9] R. Egli, Environmental influences on the magnetic properties of lake sediments, Doctoral Thesis, Diss No. 15090, ETH Zürich, Switzerland, 2003.

Communications

Egli, R., Hirt, A. M., Sturm, M., Friedl, G., The effect of
   eutrophication on the magnetic properties of lacustrine sediments from
   Baldeggersee (Switzerland), European Geophysical Society (EGS), Nice
   2000. Session SE 29.

   Spassov, S., Egli, R., Heller, F., A new method for IRM
   analysis, MAG-NET (TMR-network) workshop, Zürich 2000.

Egli, R., Lowrie, W., Hirt, A. M., The anhysteretic remanent
   magnetization (ARM) of fine magnetic particles, European Geophysical
   Society (EGS), Nice 2001. Session SE 14.

   Lanci, L., Egli, R., Hirt, A. M., Interpretation of magnetic
   parameters as indicators of environmental change: examples from Swiss
   lakes, European Geophysical Society (EGS), Nice 2001. Session SE 14.

   R. Egli and S. Spassov, A novel method for the identification and
    characterisation of magnetic sources in sediments, EAE03-J-04970,
    EGS-AGU-EUG Joint Assembly, Nice, France, 06. - 11. April 2003.
    Session MG10.

   Egli, R., The analysis of magnetization curves with skewed
   generalized Gaussian functions (SGG), EAE03-A-050050, EGS-AGU-
    EUG joint assembly, Nice, 2003. Session MG11.

   Spassov, S., R. Egli, F. Heller and D. K.   Nourgaliev,
   Discrimination of atmospheric particulate matter sources with magnetic
   methods, EAE03-J-00846, EGS-AGU-EUG joint assembly, Nice 2003.
Session MG10.

   Egli, R., Magnetism in Nature, Ad-hoc Seminar, gehalten am
   Departement für Chemie und Biochemie der Universität Bern.

    R. Egli, S. Spassov and F. Heller, Coercivity distribution of soft-magnetic
components and their occurrence in sediments and sedimentary rocks, AGU
    fall meeting, 8 - 12 December 2003 San Francisco, CA. GP41B-0049
    (poster presentation).

    S. Spassov, R. Egli and F. Heller, Magnetic quantification of road traffic
pollution in atmospheric particulate matter: a new approach, AGU fall
    meeting, 8 - 12 December 2003 San Francisco, CA. GP41B-0048 (poster
    presentation).

    R. Egli, S. Spassov, Baster, I., Sturm, M., Heller, F., Kondopoulou, D.,
    Occurrence and magnetic properties of magnetosomes in lake sediments
    and implications for environmental magnetism, EGU04-A-02206, EGU 1^st
    General Assembly, Nice, France, 25-30 April 2004 (oral presentation).

    Spassov, S., Egli, R., Zananiri, I., De Marco, E., Lüscher, P., Kretzschmar, R.,
    A detailed chemical and rock magnetic investigation of a soil profile in
    Switzerland, EGU04-A-06299, EGU 1^st General Assembly, Nice, France,
    25-30 April 2004 (oral presentation).

    Tesauro, M., Hollenstein, Ch., Egli, R., Geiger, A., Kahle, H.-G., CGPS
    deformation field in central Europe: analysis and model, EGU04-A-01842,
    EGU 1^st General Assembly, Nice, France, 25-30 April 2004 (oral
    presentation).

    Egli, R., Geiger, A., Morra, G., Wiget, A., Schlatter, A. and H.-G. Kahle,
    A kinematic model of Switzerland and its relation with Alpine orogenesis and
recent seismicity (solicited), EGU04-A-02053, EGU 1^st General Assembly,
    Nice, France, 25-30 April 2004 (poster presentation).



invited talks

Egli, R., The analysis of demagnetization curves with skewed
   generalized functions (SGG): a novel method for the identification of
   magnetic sources in sediments, IUGG Meeting, Sapporo 2003. Session
   GAI.03.

   Spassov, S., Hus, J., Egli, R., Heller, F. and M.E. Evans, The concept of linear
   unmixing - a key for interpreting environmental magnetic signals, GP34A-01
   AGU Fall Meeting, San Francisco, USA, 13-17 December 2004.

last updated: 10.02.2005, admin@spassov.ch