The stress field in the frontal part of the Eastern Alps (Austria) from borehole image log data

Levi, N.; Habermueller, M.; Exner, Ulrike; Piani, Edoardo; Wiesmayr, Gerhard; Decker, Kurt

doi:10.1016/j.tecto.2019.228175

Cited by 13 publications

(13 citation statements)

References 45 publications

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“…2c), the orientation of this so-called reduced stress tensor is determined by the orientation of S Hmax . Given that S V can be approximated by depth and density of (Heidbach et al, 2016) and additional data of Levi et al (2019). Grey dots show the positions of stress magnitude data of Morawietz and Reiter (2020).…”

Section: Basics Of the Crustal Stress Statementioning

confidence: 99%

“…These two datasets (Fig. 1a) -the S Hmax orientation of the WSM with some additional data of Levi et al (2019) and the stress magnitude database (Morawietz and Reiter, 2020) -are used to calibrate the geomechanical model.…”

Section: Data Compilation Of Stress Tensor Componentsmentioning

confidence: 99%

“…We compare our model results with the stress orientation from the WSM database (Heidbach et al, 2016) and some additional data by Levi et al (2019) from western Austria (Fig. 1a).…”

Section: Orientation Of the Maximum Horizontal Stress (S Hmax )mentioning

confidence: 99%

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3D crustal stress state of Germany according to a data-calibrated geomechanical model

et al. 2021

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Abstract. The contemporary stress state in the upper crust is of great interest for geotechnical applications and basic research alike. However, our knowledge of the crustal stress field from the data perspective is limited. For Germany basically two datasets are available: orientations of the maximum horizontal stress (SHmax) and the stress regime as part of the World Stress Map (WSM) database as well as a complementary compilation of stress magnitude data of Germany and adjacent regions. However, these datasets only provide pointwise, incomplete and heterogeneous information of the 3D stress tensor. Here, we present a geomechanical–numerical model that provides a continuous description of the contemporary 3D crustal stress state on a regional scale for Germany. The model covers an area of about 1000×1250 km2 and extends to a depth of 100 km containing seven units, with specific material properties (density and elastic rock properties) and laterally varying thicknesses: a sedimentary unit, four different units of the upper crust, the lower crust and the lithospheric mantle. The model is calibrated by the two datasets to achieve a best-fit regarding the SHmax orientations and the minimum horizontal stress magnitudes (Shmin). The modeled orientations of SHmax are almost entirely within the uncertainties of the WSM data used and the Shmin magnitudes fit to various datasets well. Only the SHmax magnitudes show locally significant deviations, primarily indicating values that are too low in the lower part of the model. The model is open for further refinements regarding model geometry, e.g., additional layers with laterally varying material properties, and incorporation of future stress measurements. In addition, it can provide the initial stress state for local geomechanical models with a higher resolution.

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Section: Basics Of the Crustal Stress Statementioning

confidence: 99%

Section: Data Compilation Of Stress Tensor Componentsmentioning

confidence: 99%

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3D crustal stress state of Germany according to a data-calibrated geomechanical model

et al. 2021

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“…For stress magnitude data, Morawietz et al (2020) published a publicly accessible database with 568 data records including a quality assessment 110 of the data for Germany and adjacent regions. These two datasets, the SHmax orientation of the WSM with some additional data of Levi et al (2019) and the stress magnitude database are used to calibrate the geomechanical model ( Fig. 1a).…”

Section: Data Compilation Of Stress Tensor Components 100mentioning

confidence: 99%

“…We compare our model results with the stress orientation (WSM quality A to C) from the WSM database (Heidbach et al, 2018) and some additional data by Levi et al (2019) from western Austria (Fig. 1a).…”

Section: Orientation Of the Maximum Horizontal Stress (Shmax)mentioning

confidence: 99%

3D crustal stress state of Western Central Europe according to a data-calibrated geomechanical model – first results

Ahlers¹,

Henk²,

Hergert³

et al. 2020

Preprint

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Abstract. The contemporary stress state in the upper crust is of great interest for geotechnical applications and basic research likewise. However, our knowledge of the crustal stress field from the data perspective is limited. For Western Central Europe basically two datasets are available: Orientations of the maximum horizontal stress (SHmax) and the stress regime as part of the World Stress Map (WSM) database (Heidbach et al., 2018) as well as a complementary compilation of stress magnitude data of Germany and adjacent regions (Morawietz et al., 2020). However, these datasets only provide pointwise, incomplete and heterogeneous information of the 3D stress tensor. Here, we present a geomechanical-numerical model that provides a continuous description of the contemporary 3D crustal stress state on a regional scale for Western Central Europe. The model covers an area of about 1000 × 1250 km2 and extends to a depth of 100 km containing seven lithostratigraphic units, with specific material properties (density and elastic rock properties) and laterally varying thicknesses: A sedimentary unit, four different units of the upper crust, the lower crust and the lithospheric mantle. The model is calibrated by the two datasets to achieve a best-fit regarding the SHmax orientations and the minimum horizontal stress magnitudes (Shmin). The modelled orientations of SHmax are almost entirely within the uncertainties of the WSM data used and the Shmin magnitudes fit to various datasets well. Only the SHmax magnitudes show locally significant deviations, primarily indicating too low values in the lower part of the model. The model is open for further refinements regarding model geometry, e.g., additional layers with laterally varying material properties, and incorporation of future stress measurements. In addition, it can provide the initial stress state for local geomechanical models with a higher resolution.

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Present-day tectonic stress from borehole breakouts in the North-Sudetic Basin (northern Bohemian Massif, SW Poland) and its regional context

Jarosiński

Bobek

Głuszyński

et al. 2021

Int J Earth Sci (Geol Rundsch)

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The stress field in the frontal part of the Eastern Alps (Austria) from borehole image log data

Cited by 13 publications

References 45 publications

3D crustal stress state of Germany according to a data-calibrated geomechanical model

3D crustal stress state of Germany according to a data-calibrated geomechanical model

3D crustal stress state of Western Central Europe according to a data-calibrated geomechanical model – first results

Present-day tectonic stress from borehole breakouts in the North-Sudetic Basin (northern Bohemian Massif, SW Poland) and its regional context

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