ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Collection
Keywords
Publisher
Language
Years
  • 1
    Publication Date: 2018-12-20
    Description: The Atacama Fault System (AFS) is an active trench-parallel fault system, located in the forearc of N-Chile directly above the subduction zone interface. Due to its well-exposed position in the hyper arid forearc of N-Chile it is the perfect target to investigate the interaction between the deformation cycle in the overriding forearc and the subduction zone seismic cycle of the underlying megathrust. Although the AFS and large parts of the upper crust are devoid of any noteworthy seismicity or historically documented earthquakes, at least three M=7 earthquakes in the past 10 ky have been documented in the paleoseismological record, demonstrating the potential of large events in the future. We apply a two-fold approach to explore fault activation and reactivation patterns through time and to investigate the triggering potential of upper crustal faults. 1) A new methodology using high-resolution topographic data allows us to investigate the number of past earthquakes for any given segment of the fault system as well as the amount of vertical displacement of the last increment. This provides us with a detailed dataset of past earthquake rupture of upper plate faults which is potentially linked to large subduction zone earthquakes. 2) The IPOC Creepmeter array provides us with high-resolution time series of fault displacement accumulation for eleven stations along the four most active branches of the AFS.
    Language: German
    Type: http://purl.org/escidoc/metadata/ves/publication-types/article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Publication Date: 2018-12-20
    Description: The Atacama Fault System (AFS) is an active trench-parallel fault system, located in the forearc of N-Chile directly above the subduction zone interface. Due to its well-exposed position in the hyper arid forearc of N-Chile it is the perfect target to investigate the interaction between the deformation cycle in the overriding forearc and the subduction zone seismic cycle of the underlying megathrust. Although the AFS and large parts of the upper crust are devoid of any noteworthy seismicity or historically documented earthquakes, at least three M=7 earthquakes in the past 10 ky have been documented in the paleoseismological record, demonstrating the potential of large events in the future. We apply a two-fold approach to explore fault activation and reactivation patterns through time and to investigate the triggering potential of upper crustal faults. 1) A new methodology using high-resolution topographic data allows us to investigate the number of past earthquakes for any given segment of the fault system as well as the amount of vertical displacement of the last increment. This provides us with a detailed dataset of past earthquake rupture of upper plate faults which is potentially linked to large subduction zone earthquakes. 2) The IPOC Creepmeter array provides us with high-resolution time series of fault displacement accumulation for eleven stations along the four most active branches of the AFS.
    Keywords: ddc:550
    Language: German
    Type: http://purl.org/escidoc/metadata/ves/publication-types/article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    facet.materialart.
    Unknown
    GFZ Data Services
    Publication Date: 2019-01-29
    Language: English
    Type: http://purl.org/escidoc/metadata/ves/publication-types/paper
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Publication Date: 2019-05-15
    Description: Accurate knowledge of in-situ thermal rock properties typical for the conditions in the Earth subsurface is indispensable for many applications in Earth science. At drillable depth, the pressure and temperature and thus its effect on rock thermal properties diverge strongly from those measured under ambient conditions in the laboratory. As the majority of petrophysical studies in this field focuses on the single effect of pressure or temperature on the rock thermal properties, the combined effect is yet not fully understood. Consequently, for large ranges of crystalline and sedimentary rocks, no reliable formulas of the simultaneous effect is available. This constitutes a serious drawback for any geothermal calculation in the accessible depth range of the Earth crust. The ITHERLAB project focuses on developing a new laboratory device to study the effect of simultaneously applied in-situ pT and fluid conditions on rock thermal conductivity and thermal diffusivity. The device allows measurements at pressures and temperatures that are simultaneously raised to values up to 〉250 MPa and 〉250°C, respectively. Pore-fluid pressures for variable saturants (air, water, oil, etc.) of up to 100 MPa can be also considered. These are the conditions for depths (to approx. 7-10 km), which are of interest in the use of Earth resources (such as geothermal energy, hydrocarbons, storage of energy or waste). The proof-of-concept for the new device has already been reached and the regular measuring operation is expected to be established within 2018. As one result of the project, new mathematical formulas for p/T dependence of both parameters will be developed and it will be demonstrated whether micro-structural effects affect these relations for different rock types. Ambiguities from the application of published formulas for single effects (p or T) will be evaluated against the simultaneous effect.
    Type: http://purl.org/eprint/type/ConferencePaper
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Publication Date: 2019-01-24
    Type: http://purl.org/escidoc/metadata/ves/publication-types/article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Publication Date: 2015-01-21
    Type: http://purl.org/eprint/type/ConferencePaper
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Publication Date: 2015-01-21
    Description: The influence of plate boundary curvature on the large-scale stress and strain patterns in an overriding plate is explored using 2D numerical and 3D thermo-mechanical analogue experiments. Numerical experiments reveal that trench-parallel compression is produced near the symmetry axis of a seaward-concave plate boundary if in- terplate friction is high and/or the subducting lithosphere has a low flexural rigidity. In contrast, trench-parallel compression is reduced along the oblique parts of the plate boundary. However, both the stress conditions on the interplate zone and the 3-D geometry of this zone control whether the trench-parallel stress in the centre of the curvature is a tension or compression. Low dip angle and high convergence obliquity angle favour trench-parallel compression. In the central Andes, N-S minor shortening in the centre of the Arica bend and strike slip systems north and south of the symmetry axis suggest that the effect of shear traction dominated during Cenozoic time when the curvature of the plate boundary was forming. We therefore argue that the processes responsible for the formation of the plate boundary curvature were assisted by enhanced interplate friction and/or reduced compres- sive non-hydrostatic normal stress. 3D thermo-mechanical laboratory experiments of oceanic subduction along a seaward-concave plate boundary are performed in order to investigate the large-scale deformation pattern in the upper plate. However, model deformation was restricted to the fore-arc domain because high friction was only im- posed in the upper, shallow (0-50 km) part of the interplate zone. Nevertheless, the large-scale deformation pattern shows characteristics which fit observations in the Andes. Along the oblique section of the plate boundary, oblique subduction produces trench-parallel shearing of the fore-arc towards the centre of the curvature, significant trench- normal coaxial shortening but little to no trench-parallel coaxial shortening. This explains the excess-rotation obtained from paleomagnetic data and kinematic models. In contrasts, fore-arc deformation near the centre of the curvature includes the largest trench-normal coaxial shortening, significant trench-parallel coaxial shortening but no trench-parallel shearing. This strain pattern also corresponds to that obtained from kinematic models. Impor- tantly, the model deformation reveal that trench-normal coaxial shortening is locally shifted inland because of the trench-parallel coaxial shortening occurring in the frontal part of the fore-arc. We therefore argue that this pattern is an intrinsic characteristic of the 3D deformation along seaward-concave plate boundary due to high interplate friction. This characteristic may extend to the arc/back-arc deformation if the high interplate friction is extended further down the interplate zone and the entire fore-arc block is dragged laterally instead of only its frontal part.
    Type: http://purl.org/eprint/type/ConferencePaper
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Publication Date: 2019-02-20
    Description: The presented datasets and scripts have been obtained for testing the performance of a trigger algorithm for use in combination with a ringshear tester ‘RST-01.pc’. Glass beads (fused quartz microbeads, 300-400 µm diameter) and thai rice are sheared at varying velocity, stiffness and normal load. The data is provided as preprocessed mat-files ('*.mat') to be opened with Matlab R2015a and later. Several scripts are provided to reproduce the figures found in (Rudolf et al., submitted). A detailed list of files together with the respective software needed to view and execute them is available in 'List_of_Files_Rudolf-et-al-2018.pdf' (also available in MS Excel Format). More information on the datasets and a small documentation of the scripts is given in 'Explanations_Rudolf-et-al-2018.pdf'. The complete data publication, including all descriptions, datasets, and evaluation scripts is available as 'Dataset_Rudolf-et-al-2018.zip'.
    Language: English
    Type: http://purl.org/escidoc/metadata/ves/publication-types/paper
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Publication Date: 2018-09-27
    Type: http://purl.org/escidoc/metadata/ves/publication-types/article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Nuclear Physics, Section B 358 (1991), S. 3-26 
    ISSN: 0550-3213
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...