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Browsing Fakultät für Bauingenieurwesen und Geodäsie by Author "7ab2c686-5a18-46dd-9818-6a1a5f58b92d"

Now showing items 1-20 of 26

Absolute gravity measurements at the iGrav047 site on Helgoland (GFZ Potsdam, AWI facility) with the Hannover gravity meter FG5X-220 in July 2020

Timmen, Ludger (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020-07-10)

Absolute gravity measurements with the Hannover gravity meter FG5X-220 were perfomed on the island Helgoland in June 2021
Absolute gravity measurements at the iGrav047 site on Helgoland (GFZ Potsdam, AWI facility) with the Hannover gravity meter FG5X-220 in June 2021

Timmen, Ludger (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2021-07-19)

Absolute gravity observations were performed with the Hannover FG5-220 absolute gravimeter on Helgoland in Juli 2021
Absolute gravity measurements in Hamburg (Groß Flottbek) at DESY (Deutsches El-ektronen-Synchrotron) with the Hannover gravity meter FG5X-220 in August 2016

Timmen, Ludger (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2017-02-02)

Integrative geodetic-gravimetric approach for investigating the longterm stability in the sinkhole area of Hamburg-Flottbek.
Absolute gravity measurements in Hamburg (Groß Flottbek) at DESY (Deutsches El-ektronen-Synchrotron) with the Hannover gravity meter FG5X-220 in July 2018

Timmen, Ludger (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018-07-18)

Integrative geodetic-gravimetric approach for investigating the longterm stability in the sinkhole area of Hamburg-Flottbek.
Absolute gravity measurements in Hamburg/Groß Flottbek at DESY (Deutsches El-ektronen-Synchrotron) with the Hannover gravity meter FG5X-220 in October 2015

Timmen, Ludger (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2015-12-15)

Integrative geodetic-gravimetric approach for investigating the longterm stability in the sinkhole area of Hamburg-Flottbek.
Absolute gravity measurements in the town hall (“Rathaus”) of Bad Frankenhausen with the Hannover gravity meter FG5X-220 in August 2016

Timmen, Ludger (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2017-02-02)

Integrative geodetic-gravimetric approach for investigating the longterm stability in the sinkhole area of Hamburg-Flottbek.
Absolute gravity measurements in the town hall (“Rathaus”) of Bad Frankenhausen with the Hannover gravity meter FG5X-220 in August 2018

Timmen, Ludger (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018-08-14)

Integrative geodetic-gravimetric approach for investigating the longterm stability in the sinkhole area of Hamburg-Flottbek.
Absolute gravity measurements in the town hall (“Rathaus”) of Bad Frankenhausen with the Hannover gravity meter FG5X-220 in June 2015

Timmen, Ludger (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2015-10-15)

Integrative geodetic-gravimetric approach for investigating the longterm stability in the sinkhole area of Hamburg-Flottbek.
Absolute und relative gravity measurements at ILL Grenoble with the Hannover absolute gravity meter FG5X-220 (Oct. 2021) and the relative meters Scintrex CG-3#4493 and CG-6#171 (Aug. and Oct. 2021)

Timmen, Ludger (Hannover : Institutionelles Repositorium der Leibniz Universität, 2022-01-19)

Before, during and after the experiment 3-14-415 (PF2 UCN) “Weak Equivalence Principle Test with Neutrons” at ILL Grenoble, gravimetric measurements were performed. The PF2 experiment lasted from 24th of August to 13th of ...
Einsatz der Atominterferometrie in der Geodäsie

Schilling, Manuel; Timmen, Ludger; Müller, Jürgen (Augsburg : Wißner Verlag, 2012-05-01)

Die Interferometrie von Materiewellen, d. h. die Nutzung der Welleneigenschaften der Materie durch die Manipulation der internen Zustände von Atomen mittels Lasern, wird für den Einsatz in der Geodäsie zunehmend interessanter. ...
Geodetic methods to determine the relativistic redshift at the level of 10-18 in the context of international timescales: a review and practical results

Denker, Heiner; Timmen, Ludger; Voigt, Christian; Weyers, Stefan; Peik, Ekkehard; Margolis, Helen S.; Delva, Pacome; Wolf, Peter; Petit, Gérard (Heidelberg : Springer Verlag, 2017)

The frequency stability and uncertainty of the latest generation of optical atomic clocks is now approaching the one part in 1018 level. Comparisons between earthbound clocks at rest must account for the relativistic ...
Geodetic monitoring of subrosion-induced subsidence processes in urban areas: Concept and status report

Kersten, Tobias; Kobe, Martin; Gabriel, Gerald; Timmen, Ludger; Schön, Steffen; Vogel, Detlef (Berlin : De Gruyter, 2017)

The research project SIMULTAN applies an advanced combination of geophysical, geodetic, and modelling techniques to gain a better understanding of the evolution and characteristics of sinkholes. Sinkholes are inherently ...
Geodetic-Gravimetric Monitoring of Mountain Uplift and Hydrological Variations at Zugspitze and Wank Mountains (Bavarian Alps, Germany)

Timmen, Ludger; Gerlach, Christian; Rehm, Till; Völksen, Christof; Voigt, Christian (Basel : MDPI, 2021)

In 2004, first absolute gravity (AG) measurements were performed on the top of Mt. Zugspitze (2 sites) and at the foot (1 site) and top (1 site) of Mt. Wank. Mt. Wank (summit height 1780 m) and Mt. Zugspitze (2960 m) are ...
A Gravimetric Support Network for Very Long Baseline Atom Interferometry

Schilling, Manuel; Wodey, Étienne; Timmen, Ludger; Tell, Dorothee; Zipfel, Klaus; Rasel, Ernst Maria; Müller, Jürgen (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)

With the introduction of portable atom interferometers (AI), a genuinely independent method for the determination of g is available for the first time since the introduction of laser interferometer based instruments. Current ...
The gravity field in force standard machines

Schilling, Manuel; Timmen, Ludger; Kumme, Rolf (Helsinki : IMEKO, 2017-06-01)

The gravity acceleration g plays an important role in several physical quantities as provided by National Metrology Institutes. The unit of force is realized in dependence on g in force standard machines (FSM). We present ...
Gravity field modelling for optical clock comparisons

Denker, Heiner; Timmen, Ludger; Voigt, Christian (Prague : International Union of Geodesy and Geophysics (IUGG), 2015)

A coordinated programme of clock comparisons is carried out within the EMRP-funded project “International Timescales with Optical Clocks” (ITOC), aiming at a validation of the uncertainty budgets of the new optical clocks ...
Gravity field modelling for the Hannover 10 m atom interferometer

Schilling, Manuel; Wodey, Étienne; Timmen, Ludger; Tell, Dorothee; Zipfel, Klaus H.; Schlippert, Dennis; Schubert, Christian; Rasel, Ernst M.; Müller, Jürgen (Berlin [u.a.] : Springer, 2020)

Absolute gravimeters are used in geodesy, geophysics and physics for a wide spectrum of applications. Stable gravimetric measurements over timescales from several days to decades are required to provide relevant insight ...
An integrative geodetic-gravimetrical approach to investigate subrosion in the sinkhole area of Hamburg Flottbek – surface deformation and mass redistribution

Weise, Adelheid; Gabriel, Gerald; Kersten, Tobias; Schön, Steffen; Timmen, Ludger; Vogel, Detlef (München : European Geosciences Union, 2018)

Sinkholes are slowly to suddenly developing subsidence structures at the surface, caused by solution of rocks. Their hazard potential is large, especially in urban areas. In the joint research project SIMULTAN (Sinkhole ...
Modeling of Atmospheric Gravity Effects for High-Precision Observations

Gitlein, Olga; Timmen, Ludger; Müller, Jürgen (Delaware : Scientific Research Publishing Inc., 2013)

Temporal variations of atmospheric density distribution induce changes in the gravitational air mass attraction at a specific observation site. Additionally, the load of the atmospheric masses deforms the Earth’s crust and ...
Postglacial gravity change in Fennoscandia—three decades of repeated absolute gravity observations

Olsson, Per-Anders; Breili, Kristian; Ophaug, Vegard; Steffen, Holger; Bilker-Koivula, Mirjam; Nielsen, Emil; Oja, Tõnis; Timmen, Ludger (Oxford : Oxford University Press/ The Royal Astronomical Society, 2019-01)

For the first time, we present a complete, processed compilation of all repeated absolute gravity (AG) observations in the Fennoscandian postglacial land uplift area and assess their ability to accurately describe the ...

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Browsing Fakultät für Bauingenieurwesen und Geodäsie by Author "7ab2c686-5a18-46dd-9818-6a1a5f58b92d"

Browsing Fakultät für Bauingenieurwesen und Geodäsie by Author "7ab2c686-5a18-46dd-9818-6a1a5f58b92d"

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