Dr.-Ing. Ludger Timmen

Dr.-Ing. Ludger Timmen
Schneiderberg 50
30167 Hannover
Schneiderberg 50
30167 Hannover

Research Focus

  • Terrestrial gravimetry
  • Geodynamics
  • Gravimetric Earth's tides
  • Temporal gravity variations from some minutes to decades
  • Vertical crustal displacement by loading

Participation in Research Programmes

  • Other Functions at the University
    • Lecturer at LUH in gravimetry (since 2005, bachelor and master studies, since 1996 as a guest lecturer)
  • Memberships, Activities and Working Groups

    from 2014
    Geodetic leader of the national working group for Geodesy and Geophysics

  • Important Publications
    • Grotti, J., Koller, S., Vogt, S., Häfner, S., Sterr, U., Lisdat, C., Denker, H., Voigt, C., Timmen, L., Rolland, A., Baynes, F.N., Margolis, H.S., Zampaolo, M., Thoumany, P., Pizzocaro, M., Rauf, B., Bregolin, F., Tampellini, A., Barbieri, P., Zucco, M., Costanzo, G.A., Clivati, C., Levi, F., Calonico, D (2018): Geodesy and metrology with a transportable optical clockNature Physics, 14, 437–441
      DOI: 10.1038/s41567-017-0042-3
    • Denker H., Timmen L., Voigt Ch., Weyers S., Peik E., Margolis H. S., Delva P., Wolf P., Petit G. (2018): Geodetic methods to determine the relativistic redshift at the level of 10-18 in the context of international timescales – A review and practical resultsJournal of Geodesy 92: 487-516
      DOI: 10.1007/s00190-017-1075-1
    • Voigt, C., Denker, H., Timmen, L. (2016): Time-variable gravity potential components for optical clock comparisons and the definition of international time scalesMetrologia 53: 1365-1383
      DOI: 10.1088/0026-1394/53/6/1365
    • Timmen L., Engfeldt A, Scherneck H.-G. (2015): Observed secular gravity trend at Onsala station with the FG5 gravimeter from HannoverJ. Geod. Sc., 5:18-25
      DOI: 10.1515/jogs-2015-0001
    • Gitlein, O., Timmen, L., Müller, J. (2013): Modeling of Atmospheric Gravity Effects for High-Precision ObservationsInternational Journal of Geosciences, Vol. 4, p. 663-671
      DOI: 10.4236/ijg.2013.44061
    • Timmen, L., Gitlein, O., Klemann, V., Wolf, D. (2012): Observing gravity change in the Fennoscandian uplift area with the Hanover absolute gravimeterIn: Deformation and gravity change: indicators of isostasy, tectonics, volcanism and climate change vol. III, Pure Appl. Geophys. (PAGEOPH), Springer Basel AG.
      DOI: 10.1007/s00024-011-0397-9
    • Timmen, L. (2010): Absolute and Relative GravimetryIn: Guochang Xu (ed.), Sciences of Geodesy-I, Advances and Future Directions, 1-48, Springer
      DOI: 10.1007/978-3-642-11741-1_1
    • Merlet, S., Bodart, Q., Malossi, N., Landragin, A., Pereira Dos Santos, F., Gitlein, O., Timmen, L. (2010): Comparison between two mobile absolute gravimeters: optical versus atomic interferometersMetrologia 47, L9-L11.
      DOI: 10.1088/0026-1394/47/4/L01
      arXiv: 1005.0357v1
    • Timmen, L. (2003): Precise definition of the effective measurement height of free-fall absolute gravimetersMetrologia 40, 62-65
      DOI: 10.1088/0026-1394/40/2/310
    • Timmen, L., Wenzel, H.-G. (1995): Worldwide synthetic gravity tide parametersIAG Symp. 113, 92-101, Springer
      DOI: 10.1007/978-3-642-79721-7_11