TY  - JOUR
A1  - Mottaghy, Darius
A1  - Schellschmidt, R.
A1  - Popov, Y. A.
A1  - Clauser, C.
A1  - Kukkonen, I. T.
A1  - Nover, G.
A1  - Milanovsky, S.
A1  - Romushkevich, R. A.
T1  - New heat flow data from the immediate vicinity of the Kola super-deep borehole: Vertical variation in heat flow density confirmed and attributed to advection
JF  - Tectonophysics
Y1  - 2005
U6  - https://doi.org/10.1016/j.tecto.2005.03.005
SN  - 1879-3266
VL  - 401
IS  - 1-2
SP  - 119
EP  - 142
ER  - 
TY  - JOUR
A1  - Mottaghy, Darius
A1  - Rath, Volker
T1  - Latent heat effects in subsurface heat transport modelling and their impact on palaeotemperature reconstructions
JF  - Geophysical Journal International
Y1  - 2006
U6  - https://doi.org/10.1111/j.1365-246X.2005.02843.x
SN  - 1365-246X
VL  - 164
IS  - 1
SP  - 236
EP  - 245
ER  - 
TY  - JOUR
A1  - Vogt, C.
A1  - Mottaghy, Darius
A1  - Wolf, A.
A1  - Rath, V.
A1  - Pechnig, R.
A1  - Clauser, C.
T1  - Reducing temperature uncertainties by stochastic geothermal reservoir modelling
JF  - Geophysical Journal International
N2  - Quantifying and minimizing uncertainty is vital for simulating technically and economically successful geothermal reservoirs. To this end, we apply a stochastic modelling sequence, a Monte Carlo study, based on (i) creating an ensemble of possible realizations of a reservoir model, (ii) forward simulation of fluid flow and heat transport, and (iii) constraining post-processing using observed state variables. To generate the ensemble, we use the stochastic algorithm of Sequential Gaussian Simulation and test its potential fitting rock properties, such as thermal conductivity and permeability, of a synthetic reference model and—performing a corresponding forward simulation—state variables such as temperature. The ensemble yields probability distributions of rock properties and state variables at any location inside the reservoir. In addition, we perform a constraining post-processing in order to minimize the uncertainty of the obtained distributions by conditioning the ensemble to observed state variables, in this case temperature. This constraining post-processing works particularly well on systems dominated by fluid flow. The stochastic modelling sequence is applied to a large, steady-state 3-D heat flow model of a reservoir in The Hague, Netherlands. The spatial thermal conductivity distribution is simulated stochastically based on available logging data. Errors of bottom-hole temperatures provide thresholds for the constraining technique performed afterwards. This reduce the temperature uncertainty for the proposed target location significantly from 25 to 12 K (full distribution width) in a depth of 2300 m. Assuming a Gaussian shape of the temperature distribution, the standard deviation is 1.8 K. To allow a more comprehensive approach to quantify uncertainty, we also implement the stochastic simulation of boundary conditions and demonstrate this for the basal specific heat flow in the reservoir of The Hague. As expected, this results in a larger distribution width and hence, a larger, but more realistic uncertainty estimate. However, applying the constraining post-processing the uncertainty is again reduced to the level of the post-processing without stochastic boundary simulation. Thus, constraining post-processing is a suitable tool for reducing uncertainty estimates by observed state variables.
Y1  - 2010
U6  - https://doi.org/10.1111/j.1365-246X.2009.04498.x
SN  - 1365-246X
VL  - 181
IS  - 1
SP  - 321
EP  - 333
PB  - Oxford University Press
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Rath, V.
A1  - Mottaghy, Darius
T1  - Smooth inversion for ground surface temperature histories: estimating the optimum regularization parameter by generalized cross-validation
JF  - Geophysical Journal International
Y1  - 2007
U6  - https://doi.org/10.1111/j.1365-246X.2007.03587.x
SN  - 1365-246X
VL  - 171
IS  - 3
SP  - 1440
EP  - 1448
ER  - 
TY  - JOUR
A1  - Krebsbach, M.
A1  - Schiller, C.
A1  - Brunner, D.
A1  - Günther, G.
A1  - Hegglin, M. I.
A1  - Mottaghy, Darius
A1  - Riese, M.
A1  - Spelten, N.
A1  - Wernli, H.
T1  - Seasonal cycles and variability of O_3 and H_2O in the UT/LMS during SPURT
JF  - Atmospheric Chemistry and Physics
Y1  - 2006
U6  - https://doi.org/10.5194/acp-6-109-2006
VL  - 6
IS  - 1
SP  - 109
EP  - 125
ER  - 
TY  - JOUR
A1  - Mottaghy, Darius
A1  - Vosteen, Hans-Dieter
A1  - Schellschmidt, Rüdiger
T1  - Temperature dependence of the relationship of thermal diffusivity versus thermal conductivity for crystalline rocks
JF  - International Journal of Earth Sciences
Y1  - 2008
U6  - https://doi.org/10.1007/s00531-007-0238-3
SN  - 1437-3262
VL  - 97
IS  - 2
SP  - 435
EP  - 442
ER  - 
TY  - JOUR
A1  - Döring, Bernd
A1  - Reger, Vitali
A1  - Kuhnhenne, Markus
A1  - Feldmann, Markus
A1  - Kesti, Jyrki
A1  - Lawson, Mark
A1  - Botti, Andrea
T1  - Steel solutions for enabling zero-energy buildings
JF  - Steel Construction - Design
and Research
Y1  - 2015
U6  - https://doi.org/10.1002/stco.201510029
SN  - 1867-0539
N1  - The 13th Nordic Steel Construction Conference, Tampere, 2015 (NSCC-2015)
VL  - 8
IS  - 3
SP  - 194
EP  - 200
PB  - Ernst & Sohn
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Vogt, C.
A1  - Mottaghy, Darius
A1  - Rath, V.
A1  - Marquart, G.
A1  - Dijkshoorn, L.
A1  - Wolf, A.
A1  - Clauser, C.
T1  - Vertical variation in heat flow on the Kola Peninsula: palaeoclimate or fluid flow?
JF  - Geophysical Journal International
N2  - Following earlier studies, we present forward and inverse simulations of heat and fluid transport of the upper crust using a local 3-D model of the Kola area. We provide best estimates for palaeotemperatures and permeabilities, their errors and their dependencies. Our results allow discriminating between the two mentioned processes to a certain extent, partly resolving the non-uniqueness of the problem. We find clear indications for a significant contribution of advective heat transport, which, in turn, imply only slightly lower ground surface temperatures during the last glacial maximum relative to the present value. These findings are consistent with the general background knowledge of (i) the fracture zones and the corresponding fluid movements in the bedrock and (ii) the glacial history of the Kola area.
Y1  - 2014
U6  - https://doi.org/10.1093/gji/ggu282
SN  - 1365-246X
VL  - 199
IS  - 2
SP  - 829
EP  - 843
PB  - Oxford University Press
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Chen, Tao
A1  - Clauser, Christoph
A1  - Marquart, Gabriele
A1  - Willbrand, Karen
A1  - Mottaghy, Darius
T1  - A new upscaling method for fractured porous media
JF  - Advances in Water Resources
Y1  - 2015
U6  - https://doi.org/10.1016/j.advwatres.2015.03.009
SN  - 0309-1708
N1  - Corrigendum 2019:
https://doi.org/10.1016/j.advwatres.2019.01.004
VL  - 80
SP  - 60
EP  - 68
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Kürten, Sylvia
A1  - Mottaghy, Darius
A1  - Ziegler, Martin
T1  - A new model for the description of the heat transfer for plane thermo-active geotechnical systems based on thermal resistances
JF  - Acta Geotechnica
Y1  - 2015
U6  - https://doi.org/10.1007/s11440-014-0311-6
SN  - 1861-1133
VL  - 10
IS  - 2
SP  - 219
EP  - 229
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Kürten, Sylvia
A1  - Mottaghy, Darius
A1  - Ziegler, Martin
T1  - Design of plane energy geostructures based on laboratory tests and numerical modelling
JF  - Energy and Buildings
Y1  - 2015
U6  - https://doi.org/10.1016/j.enbuild.2015.08.039
SN  - 0378-7788
VL  - 107
SP  - 434
EP  - 444
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Funke, Harald
A1  - Keinz, Jan
A1  - Kusterer, K.
A1  - Haj Ayed, A.
A1  - Kazari, M.
A1  - Kitajima, J.
A1  - Horikawa, A.
A1  - Okada, K.
T1  - Experimental and Numerical Study on Optimizing the DLN Micromix Hydrogen Combustion Principle for Industrial Gas Turbine Applications
T2  - ASME Turbo Expo 2015: Turbine Technical Conference and Exposition Volume 4A: Combustion, Fuels and Emissions Montreal, Quebec, Canada, June 15–19, 2015
Y1  - 2015
SN  - 978-0-7918-5668-0
U6  - https://doi.org/10.1115/GT2015-42043
SP  - V04AT04A008
ER  - 
TY  - CHAP
A1  - Tewari, Udit
A1  - Neshvad, Surena
A1  - Goldbach, Daniel
A1  - Sachau, Jürgen
T1  - Verification and Implementation of Pseudo-Random-Binary-Sequences for Online Determination of Grid Impedance Spectrum
T2  - International Conference on Renewable Energies and Power Quality (ICREPQ´15), La Conuna, Spain, 25th to 27th March, 2015
Y1  - 2015
ER  - 
TY  - CHAP
A1  - Lindenlauf, Simon
A1  - Höfken, Hans-Wilhelm
A1  - Schuba, Marko
T1  - Cold Boot Attacks on DDR2 and DDR3 SDRAM
T2  - 10th International Conference on Availability, Reliability and Security (ARES) 2015
Y1  - 2015
U6  - https://doi.org/10.1109/ARES.2015.28
SP  - 287
EP  - 292
ER  - 
TY  - CHAP
A1  - Kirsch, Ansgar
T1  - Numerical investigation of the face stability of shallow tunnels in sand
T2  - Numerical methods in geotechnical engineering : (NUMGE 2010) : proceedings of the seventh European Conference on Numerical Methods in Geotechnical Engineering, Trondheim, Norway, 2 - 4 June 2010 / ed. by Thomas Benz ...
Y1  - 2010
SN  - 978-0-415-59239-0
SP  - 779
EP  - 784
PB  - Taylor and Francis
CY  - London
ER  - 
TY  - CHAP
A1  - Kirsch, Ansgar
A1  - Marcher, Thomas
T1  - Numerical prediction of time-dependent rock swelling based on an example of a major tunnel project in Ontario/Canada
T2  - Numerical methods in geotechnical engineering : (NUMGE 2010) : proceedings of the seventh European Conference on Numerical Methods in Geotechnical Engineering, Trondheim, Norway, 2 - 4 June 2010 / ed. by Thomas Benz ...
Y1  - 2010
SN  - 978-0-415-59239-0
SP  - 297
EP  - 302
PB  - Taylor and Francis
CY  - London
ER  - 
TY  - CHAP
A1  - Fellin, Wolfgang
A1  - King, Julian
A1  - Kirsch, Ansgar
A1  - Oberguggenberger, Michael
T1  - Uncertainty modelling and sensitivity analysis of tunnel face stability
T2  - Safety, reliability and risk of structures, infrastructures and engineering systems : proceedings of the tenth International Conference on Structural Safety and Reliability (ICOSSAR 2009), Osaka, Japan, 13-17 September 2009 / ed.: Hitoshi Furuta ...
Y1  - 2009
SN  - 978-0-415-47557-0
SP  - 112
EP  - 114
PB  - CRC Pr.
CY  - Boca Raton, Fla. [u.a.]
ER  - 
TY  - CHAP
A1  - Kirsch, Ansgar
A1  - Blioumi, A.
A1  - Fellin, Wolfgang
A1  - Kolymbas, Dimitrios
T1  - Modelling anisotropic squeezing as a process in time
T2  - ECCOMAS Thematic Conference on Computational Methods in Tunneling ; August 27 - 29, 2007, Vienna, Austria : EURO:TUN 2007 : proceedings
Y1  - 2007
SN  - 3-9501554-7-3 ; 978-3-9501554-7-1
CY  - Wien
ER  - 
TY  - CHAP
A1  - Kirsch, Ansgar
T1  - Experimental and numerical investigation of the face stability of shallow tunnels in sand
T2  - Safe tunnelling for the city and environment : proceedings of the World Tunnel Congress 2009, Budapest, Hungary, 23 to 28 September 2009 / organised by International Tunnelling and Underground Space Association ...
Y1  - 2009
SP  - 1
EP  - 8
PB  - Hungarian Tunnelling Association
CY  - Budapest
ER  - 
TY  - PAT
A1  - O'Connell, Timothy
A1  - Siegert, Petra
A1  - Maurer, Karl-Heinz
A1  - Schiedel, Marc-Steffen
A1  - Vockenroth, Inga Kerstin
T1  - Method for improving the cleaning action of a detergent or cleaning agent [Internationale Patentanmeldung]
T1  - Verfahren zur Verbesserung der Reinigungsleistung eines Wasch- oder Reinigungsmittels
Y1  - 2010
SP  - 1
EP  - 15
PB  - WIPO
CY  - Genf
ER  -