50732
2019
2019
eng
21
article
Wiley-Hindawi
London
1
2019-03-11
2019-03-11
--
Influence of the Main Border Faults on the 3D Hydraulic Field of the Central Upper Rhine Graben
The Upper Rhine Graben (URG) is an active rift with a high geothermal potential. Despite being a well-studied area, the three-dimensional interaction of the main controlling factors of the thermal and hydraulic regime is still not fully understood. Therefore, we have used a data-based 3D structural model of the lithological configuration of the central URG for some conceptual numerical experiments of 3D coupled simulations of fluid and heat transport. To assess the influence of the main faults bordering the graben on the hydraulic and the deep thermal field, we carried out a sensitivity analysis on fault width and permeability. Depending on the assigned width and permeability of the main border faults, fluid velocity and temperatures are affected only in the direct proximity of the respective border faults. Hence, the hydraulic characteristics of these major faults do not significantly influence the graben-wide groundwater flow patterns. Instead, the different scenarios tested provide a consistent image of the main characteristics of fluid and heat transport as they have in common: (1) a topography-driven basin-wide fluid flow perpendicular to the rift axis from the graben shoulders to the rift center, (2) a N/NE-directed flow parallel to the rift axis in the center of the rift and, (3) a pronounced upflow of hot fluids along the rift central axis, where the streams from both sides of the rift merge. This upflow axis is predicted to occur predominantly in the center of the URG (northern and southern model area) and shifted towards the eastern boundary fault (central model area).
Geofluids
10.1155/2019/7520714
1468-8115
1468-8123
wos:2019
UNSP 7520714
WOS:000462390800001
Freymark, J (reprint author), GFZ German Res Ctr Geosci, D-14473 Potsdam, Germany.; Freymark, J (reprint author), Rhein Westfal TH Aachen, Fac Georesources & Mat Engn, Lochnerstr 4-20, D-52056 Aachen, Germany., jessica.freymark@arcor.de; sippel@gfz-potsdam.de; cacace@gfz-potsdam.de; mziegler@gfz-potsdam.de; leni@gfz-potsdam.de
European CommunityEuropean Community (EC) [608553]
2021-05-18T08:01:06+00:00
sword
importub
filename=package.tar
593bf8b1c5daa0c12aacd02c93999d10
Freymark, Jessica
false
true
CC-BY - Namensnennung 4.0 International
Jessica Freymark
Judith Bott
Mauro Cacace
Moritz 0. Ziegler
Magdalena Scheck-Wenderoth
Geowissenschaften
Referiert
Institut für Umweltwissenschaften und Geographie
Import
Gold Open-Access
DOAJ gelistet
32103
2010
2010
eng
article
1
--
--
--
Geothermal energy in sedimentary basins : what we can learn from regional numerical models
Understanding the interactions between the different processes that control the geothermal and fluid flow fields in sedimentary basins is crucial for exploitation of geothermal energy. Numerical models provide predictive and feasible information for a correct assessment of geothermal resources especially in areas where data acquisition is demanding. Here, we present results from numerical efforts to characterize the thermal structure and its interaction with the fluid system for the area of the North East German Basin (NEGB). The relative impact of the different (diffusive and advective) processes affecting the hydrothermal setting of the basin are investigated by means of three- dimensional numerical simulations. Lithospheric-scale numerical models are evaluated to understand the specific thermal signature of the relevant factors influencing the present-day conductive geothermal field in the NEGB. Shallow and deep structural controls on the thermal configuration of the basin are addressed and quantified. Interaction between the resulting thermal field and the active fluid system is investigated by means of three-dimensional simulations of coupled fluid flow and heat transport. Factors influencing stability and reliability of modeling predictions are discussed. The main effort is to build a physically consistent model for the basin which integrates the impacts of thermal gradients on the regional fluid regime and their coupling with the main geological units defining the basin.
http://www.sciencedirect.com/science/journal/00092819
10.1016/j.chemer.2010.05.017
0009-2819
allegro:1991-2014
10108457
Chemie der Erde. - ISSN 0009-2819. - 70 (2010), Suppl. 3, S. 33 - 46
Mauro Cacace
Bjoern Onno Kaiser
Bjoern Lewerenz
Magdalena Scheck-Wenderoth
Institut für Geowissenschaften
Referiert
Institut für Erd- und Umweltwissenschaften
34558
2013
2013
eng
3619
3642
24
8
70
article
Springer
New York
1
--
--
--
Controls on the deep thermal field - implications from 3-D numerical simulations for the geothermal research site Groß Schönebeck
The deep thermal field in sedimentary basins can be affected by convection, conduction or both resulting from the structural inventory, physical properties of geological layers and physical processes taking place therein. For geothermal energy extraction, the controlling factors of the deep thermal field need to be understood to delineate favorable drill sites and exploitation compartments. We use geologically based 3-D finite element simulations to figure out the geologic controls on the thermal field of the geothermal research site Gro Schonebeck located in the E part of the North German Basin. Its target reservoir consists of Permian Rotliegend clastics that compose the lower part of a succession of Late Carboniferous to Cenozoic sediments, subdivided into several aquifers and aquicludes. The sedimentary succession includes a layer of mobilized Upper Permian Zechstein salt which plays a special role for the thermal field due to its high thermal conductivity. Furthermore, the salt is impermeable and due to its rheology decouples the fault systems in the suprasalt units from subsalt layers. Conductive and coupled fluid and heat transport simulations are carried out to assess the relative impact of different heat transfer mechanisms on the temperature distribution. The measured temperatures in 7 wells are used for model validation and show a better fit with models considering fluid and heat transport than with a purely conductive model. Our results suggest that advective and convective heat transport are important heat transfer processes in the suprasalt sediments. In contrast, thermal conduction mainly controls the subsalt layers. With a third simulation, we investigate the influence of a major permeable and of three impermeable faults dissecting the subsalt target reservoir and compare the results to the coupled model where no faults are integrated. The permeable fault may have a local, strong impact on the thermal, pressure and velocity fields whereas the impermeable faults only cause deviations of the pressure field.
Environmental earth sciences
10.1007/s12665-013-2519-4
1866-6280
1866-6299
wos:2011-2013
WOS:000327457600014
Cherubini, Y (reprint author), GFZ German Res Ctr Geosci, Helmholtz Ctr Potsdam, D-14473 Potsdam, Germany., yvonne.cherubini@gfz-potsdam.de
Yvonne Cherubini
Mauro Cacace
Magdalena Scheck-Wenderoth
Inga Moeck
Björn Lewerenz
eng
uncontrolled
Thermal field
eng
uncontrolled
Coupled fluid and heat transport
eng
uncontrolled
Faults
eng
uncontrolled
Groß beta Schönebeck
Institut für Geowissenschaften
Referiert
Institut für Erd- und Umweltwissenschaften
34559
2013
2013
eng
3643
3659
17
8
70
article
Springer
New York
1
--
--
--
3D coupled fluid and heat transport simulations of the Northeast German Basin and their sensitivity to the spatial discretization - different sensitivities for different mechanisms of heat transport
Based on a numerical model of the Northeast German Basin (NEGB), we investigate the sensitivity of the calculated thermal field as resulting from heat conduction, forced and free convection in response to consecutive horizontal and vertical mesh refinements. Our results suggest that computational findings are more sensitive to consecutive horizontal mesh refinements than to changes in the vertical resolution. In addition, the degree of mesh sensitivity depends strongly on the type of the process being investigated, whether heat conduction, forced convection or free thermal convection represents the active heat driver. In this regard, heat conduction exhibits to be relative robust to imposed changes in the spatial discretization. A systematic mesh sensitivity is observed in areas where forced convection promotes an effective role in shorten the background conductive thermal field. In contrast, free thermal convection is to be regarded as the most sensitive heat transport process as demonstrated by non-systematic changes in the temperature field with respect to imposed changes in the model resolution.
Environmental earth sciences
10.1007/s12665-013-2249-7
1866-6280
1866-6299
wos:2011-2013
WOS:000327457600015
Kaiser, BO (reprint author), Univ Potsdam, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany., kaiser@gfz-potsdam.de; cacace@gfz-potsdam.de; leni@gfz-potsdam.de
Björn Onno Kaiser
Mauro Cacace
Magdalena Scheck-Wenderoth
eng
uncontrolled
Mesh convergence
eng
uncontrolled
Conduction
eng
uncontrolled
Advection
eng
uncontrolled
Convection
eng
uncontrolled
Thermal field
eng
uncontrolled
Northeast German Basin
Institut für Geowissenschaften
Referiert
Institut für Erd- und Umweltwissenschaften
32074
2010
2010
eng
article
1
--
--
--
Three dimensional modelling of fractured and faulted reservoirs : framework and implementation
Modelling of coupled physical processes in fractured and faulted media is a major challenge for the geoscience community. Due to the complexity related to the geometry of real fracture networks and fault systems, modelling studies have been mainly restricted either to two dimensional cases or to simplified orthogonal fracture systems consisting of vertical and horizontal fractures. An approach to generate three dimensional meshes for realistic fault geometries is presented. The method enables representation of faults in an arbitrary incline as two dimensional planes within a three dimensional, stratified porous matrix of a generic geometry. Based on a structural geological model, the method creates three dimensional unstructured tetrahedral meshes. These meshes can be used for finite element and finite volume numerical simulations. A simulation of a coupled fluid flow and heat transport problem for a two layered porous medium cut by two crossing faults is presented to test the reliability of the method.
http://www.sciencedirect.com/science/journal/00092819
10.1016/j.chemer.2010.05.014
0009-2819
allegro:1991-2014
10108428
Chemie der Erde. - ISSN 0009-2819. - 70 (2010), Suppl. 3, S. 145 - 153
Mando Guido Bloecher
Mauro Cacace
Bjoern Lewerenz
Günter Zimmermann
Institut für Geowissenschaften
Referiert
Institut für Erd- und Umweltwissenschaften
34821
2013
2013
eng
3156
3175
20
8
14
article
American Geophysical Union
Washington
1
--
--
--
Quaternary channels within the Northeast German Basin and their relevance on double diffusive convective transport processes - constraints from 3-D thermohaline numerical simulations
The internal geological structure of the Northeast German Basin (NEGB) is affected by intense salt diapirism and by the presence of several stratified aquifer complexes of regional relevance. The shallow Quaternary to late Tertiary freshwater aquifer is separated from the underlying Mesozoic saline aquifers by an embedded Tertiary clay enriched aquitard (Rupelian Aquitard). An important feature of this aquitard is that hydraulic connections between the upper and lower aquifers do exist in areas where the Rupelian Aquitard is missing (hydrogeological windows). Three-dimensional thermohaline numerical simulations are carried out to investigate the effects of such hydrogeological windows in the Rupelian Aquitard on the resulting groundwater, temperature, and salinity distributions. Numerical results suggest that hydrogeological windows act as preferential domains of hydraulic interconnectivity between the different aquifers at depth and enable vigorous heat and mass transport which causes a mixing of warm and saline groundwater with cold and less saline groundwater within both aquifers. In areas where the Rupelian Aquitard confines the Mesozoic aquifer, dissolved solutes from major salt structures are transported laterally giving rise to plumes of variable salinity content ranging from few hundreds of meters to several tens of kilometers. Furthermore, destabilizing thermal buoyancy forces may overwhelm counteracting stabilizing salinity induced forces offside of salt domes. This may result in buoyant upward groundwater flow transporting heat and mass to shallower levels within the same Mesozoic Aquifer.
Geochemistry, geophysics, geosystems
10.1002/ggge.20192
1525-2027
wos:2011-2013
WOS:000326242700033
Kaiser, BO (reprint author), Univ Potsdam, Inst Earth & Environm Sci, Karl Liebknecht Str 24-25, DE-14476 Potsdam, Germany., kaiser@gfz-potsdam.de
German Federal Ministry of Education and Research in the program
"Spitzenforschung in den neuen Landern" (BMBF) [03G0767A/B/C]
Björn Onno Kaiser
Mauro Cacace
Magdalena Scheck-Wenderoth
eng
uncontrolled
double diffusive convection
eng
uncontrolled
thermohaline processes
eng
uncontrolled
numerical simulations
eng
uncontrolled
salt structures
eng
uncontrolled
Northeast German Basin
eng
uncontrolled
quarternary channels
Institut für Geowissenschaften
Referiert
Institut für Erd- und Umweltwissenschaften
36739
2011
2011
eng
17
13
12
article
American Geophysical Union
Washington
1
--
--
--
Characterization of main heat transport processes in the Northeast German Basin constraints from 3-D numerical models
To investigate and quantify main physical heat driving processes affecting the present-day subsurface thermal field, we study a complex geological setting, the Northeast German Basin (NEGB). The internal geological structure of the NEGB is characterized by the presence of a relatively thick layer of Permian Zechstein salt (up to 5000 m), which forms many salt diapirs and pillows locally reaching nearly the surface. By means of three-dimensional numerical simulations we explore the role of heat conduction, pressure, and density driven groundwater flow as well as fluid viscosity related effects. Our results suggest that the regional temperature distribution within the basin results from interactions between regional pressure forces as driven by topographic gradients and thermal diffusion locally enhanced by thermal conductivity contrasts between the different sedimentary rocks with the highly conductive salt playing a prominent role. In contrast, buoyancy forces triggered by temperature-dependent fluid density variations are demonstrated to affect only locally the internal thermal configuration. Locations, geometry, and wavelengths of convective thermal anomalies are mainly controlled by the permeability field and thickness values of the respective geological layers.
Geochemistry, geophysics, geosystems
10.1029/2011GC003535
1525-2027
wos:2011-2013
Q07011
WOS:000292836600002
Kaiser, BO (reprint author), Univ Potsdam, Inst Earth & Environm Sci, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany., kaiser@gfz-potsdam.de; cacace@gfz-potsdam.de; leni@gfz-potsdam.de; lew@gfz-potsdam.de
German Federal Ministry of Education and Research [03G0767A/B/C]
Bjoern Onno Kaiser
Mauro Cacace
Magdalena Scheck-Wenderoth
Bjoern Lewerenz
eng
uncontrolled
advection
eng
uncontrolled
convection
eng
uncontrolled
coupled fluid and heat transport
eng
uncontrolled
numerical simulations
eng
uncontrolled
Northeast German Basin
eng
uncontrolled
salt structures
Institut für Geowissenschaften
Referiert
Institut für Erd- und Umweltwissenschaften
37694
2014
2014
eng
315
331
17
55
article
Elsevier
Oxford
1
--
--
--
Models of heat transport in the Central European Basin System: Effective mechanisms at different scales
Understanding heat transport in sedimentary basins requires an assessment of the regional 3D heat distribution and of the main physical mechanisms responsible for the transport of heat. We review results from different 3D numerical simulations of heat transport based on 3D basin models of the Central European Basin System (CEBS). Therefore we compare differently detailed 3D structural models of the area, previously published individually, to assess the influence of (1) different configurations of the deeper lithosphere, (2) the mechanism of heat transport considered and (3) large faults dissecting the sedimentary succession on the resulting thermal field and groundwater flow. Based on this comparison we propose a modelling strategy linking the regional and lithosphere-scale to the sub-basin and basin-fill scale and appropriately considering the effective heat transport processes. We find that conduction as the dominant mechanism of heat transport in sedimentary basins is controlled by the distribution of thermal conductivities, compositional and thickness variations of both the conductive and radiogenic crystalline crust as well as the insulating sediments and by variations in the depth to the thermal lithosphere-asthenosphere boundary. Variations of these factors cause thermal anomalies of specific wavelength and must be accounted for in regional thermal studies. In addition advective heat transport also exerts control on the thermal field on the regional scale. In contrast, convective heat transport and heat transport along faults is only locally important and needs to be considered for exploration on the reservoir scale. The general applicability of the proposed workflow makes it of interest for a broad range of application in geosciences including oil and gas exploration, geothermal utilization or carbon capture and sequestration issues. (C) 2014 Elsevier Ltd. All rights reserved.
Marine and petroleum geology
10.1016/j.marpetgeo.2014.03.009
0264-8172
1873-4073
wos:2014
WOS:000338620800022
Scheck-Wenderoth, M (reprint author), GFZ German Res, Helmholtz Ctr Potsdam, Ctr Geosci, Telegrafenberg, D-014473 Potsdam, Germany., leni@gfz-potsdam.de
German Science Foundation DFG [SPP1135]; Spitzenforschung in den neuen
Landern BMBF [03G0671A/B/C]
Magdalena Scheck-Wenderoth
Mauro Cacace
Yuriy Petrovich Maystrenko
Yvonne Cherubini
Vera Noack
Bjoern Onno Kaiser
Judith Sippel
Lewerenz Bjoern
eng
uncontrolled
3D thermal model
eng
uncontrolled
Geothermal field
eng
uncontrolled
Sedimentary basin
eng
uncontrolled
Heat transport by conduction
eng
uncontrolled
Advection and convection
eng
uncontrolled
Central European Basin System
Extern
Referiert
35551
2012
2012
eng
1695
1711
17
6
67
article
Springer
New York
1
--
--
--
Sensitivity of 3D thermal models to the choice of boundary conditions and thermal properties: a case study for the area of Brandenburg (NE German Basin)
Based on newly available data of both, the structural setting and thermal properties, we compare 3D thermal models for the area of Brandenburg, located in the Northeast German Basin, to assess the sensitivity of our model results. The structural complexity of the basin fill is given by the configuration of the Zechstein salt with salt diapirs and salt pillows. This special configuration is very relevant for the thermal calculations because salt has a distinctly higher thermal conductivity than other sediments. We calculate the temperature using a FEMethod to solve the steady state heat conduction equation in 3D. Based on this approach, we evaluate the sensitivity of the steady-state conductive thermal field with respect to different lithospheric configurations and to the assigned thermal properties. We compare three different thermal models: (a) a crustal-scale model including a homogeneous crust, (b) a new lithosphere-scale model including a differentiated crust and (c) a crustal-scale model with a stepwise variation of measured thermal properties. The comparison with measured temperatures from different structural locations of the basin shows a good fit to the temperature predictions for the first two models, whereas the third model is distinctly colder. This indicates that effective thermal conductivities may be different from values determined by measurements on rock samples. The results suggest that conduction is the main heat transport mechanism in the Brandenburg area.
Environmental earth sciences
10.1007/s12665-012-1614-2
1866-6280
wos:2011-2013
WOS:000310615100013
Noack, V (reprint author), GFZ German Res Ctr Geosci, Helmholtz Ctr Potsdam, D-14473 Potsdam, Germany., Vera.Noack@gfz-potsdam.de; leni@gfz-potsdam.de; Mauro.Cacace@gfz-potsdam.de
Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences;
German Federal Ministry of Education and Research in the programme
"Spitzenforschung in den neuen Landern" (BMBF) [03G0671A/B/C]
Vera Noack
Magdalena Scheck-Wenderoth
Mauro Cacace
eng
uncontrolled
Conductive thermal field
eng
uncontrolled
3D thermal model
eng
uncontrolled
Lithosphere-asthenosphere boundary
eng
uncontrolled
Zechstein salt
eng
uncontrolled
Brandenburg
eng
uncontrolled
Northeast German Basin
Referiert
Institut für Umweltwissenschaften und Geographie
Institut für Geographie
57943
2020
2020
eng
14
193
article
Elsevier
Amsterdam
1
2020-07-31
2020-07-31
--
The 3D thermal field across the Alpine orogen and its forelands and the relation to seismicity
Temperature exerts a first order control on rock strength, principally via thermally activated creep deformation and on the distribution at depth of the brittle-ductile transition zone. The latter can be regarded as the lower bound to the seismogenic zone, thereby controlling the spatial distribution of seismicity within a lithospheric plate. As such, models of the crustal thermal field are important to understand the localisation of seismicity. Here we relate results from 3D simulations of the steady state thermal field of the Alpine orogen and its forelands to the distribution of seismicity in this seismically active area of Central Europe. The model takes into account how the crustal heterogeneity of the region effects thermal properties and is validated with a dataset of wellbore temperatures. We find that the Adriatic crust appears more mafic, through its radiogenic heat values (1.30E-06 W/m3) and maximum temperature of seismicity (600 degrees C), than the European crust (1.3-2.6E-06 W/m3 and 450 degrees C). We also show that at depths of < 10 km the thermal field is largely controlled by sedimentary blanketing or topographic effects, whilst the deeper temperature field is primarily controlled by the LAB topology and the distribution and parameterization of radiogenic heat sources within the upper crust.
Global and planetary change
10.1016/j.gloplacha.2020.103288
0921-8181
1872-6364
outputup:dataSource:WoS:2020
103288
WOS:000579856400018
Spooner, C (corresponding author), GFZ German Res Ctr Geosci, Potsdam, Germany., spooner@gfz-potsdam.de
Deutsche Forschungsgemeinschaft (DFG)German Research Foundation (DFG)
Spooner, Cameron
2023-02-14T08:33:11+00:00
sword
importub
filename=package.tar
5fd52e936f78feaacf701d5b0639ffda
2016967-X
false
true
CC-BY-NC-ND - Namensnennung, nicht kommerziell, keine Bearbeitungen 4.0 International
Cameron Spooner
Magdalena Scheck-Wenderoth
Mauro Cacace
Hans-Jürgen Götze
Elco Luijendijk
eng
uncontrolled
steady-state
eng
uncontrolled
thermal-field
eng
uncontrolled
Europe
eng
uncontrolled
Alps
eng
uncontrolled
Adria
eng
uncontrolled
seismicity
Geowissenschaften
Referiert
Institut für Umweltwissenschaften und Geographie
Import
Hybrid Open-Access
34556
2013
2013
eng
3585
3602
18
8
70
article
Springer
New York
1
--
--
--
Modelling of fractured carbonate reservoirs - outline of a novel technique via a case study from the Molasse Basin, southern Bavaria, Germany
Fluid flow in low-permeable carbonate rocks depends on the density of fractures, their interconnectivity and on the formation of fault damage zones. The present-day stress field influences the aperture hence the transmissivity of fractures whereas paleostress fields are responsible for the formation of faults and fractures. In low-permeable reservoir rocks, fault zones belong to the major targets. Before drilling, an estimate for reservoir productivity of wells drilled into the damage zone of faults is therefore required. Due to limitations in available data, a characterization of such reservoirs usually relies on the use of numerical techniques. The requirements of these mathematical models encompass a full integration of the actual fault geometry, comprising the dimension of the fault damage zone and of the fault core, and the individual population with properties of fault zones in the hanging and foot wall and the host rock. The paper presents both the technical approach to develop such a model and the property definition of heterogeneous fault zones and host rock with respect to the current stress field. The case study describes a deep geothermal reservoir in the western central Molasse Basin in southern Bavaria, Germany. Results from numerical simulations indicate that the well productivity can be enhanced along compressional fault zones if the interconnectivity of fractures is lateral caused by crossing synthetic and antithetic fractures. The model allows a deeper understanding of production tests and reservoir properties of faulted rocks.
Environmental earth sciences
10.1007/s12665-013-2402-3
1866-6280
1866-6299
wos:2011-2013
WOS:000327457600012
Cacace, M (reprint author), GFZ German Res Ctr Geosci, Helmholtz Ctr Potsdam, D-14473 Potsdam, Germany., cacace@gfz-potsdam.de
German Federal Ministry for the Environment, Nature Conservation and
Nuclear Safety (BMU) [03G0671 A/B/C]
Mauro Cacace
Guido Blöcher
Norihiro Watanabe
Inga Möck
Nele Börsing
Magdalena Scheck-Wenderoth
Olaf Kolditz
Ernst Hünges
eng
uncontrolled
Fractured carbonate geothermal reservoirs
eng
uncontrolled
Fault core and damage zone
eng
uncontrolled
In situ stress field
eng
uncontrolled
3D mesh generator
eng
uncontrolled
OpenGeosys
eng
uncontrolled
Well productivity
Institut für Geowissenschaften
Referiert
34557
2013
2013
eng
3603
3618
16
8
70
article
Springer
New York
1
--
--
--
Impact of single inclined faults on the fluid flow and heat transport - results from 3-D finite element simulations
The impact of inclined faults on the hydrothermal field is assessed by adding simplified structural settings to synthetic models. This study is innovative in carrying out numerical simulations because it integrates the real 3-D nature of flow influenced by a fault in a porous medium, thereby providing a useful tool for complex geothermal modelling. The 3-D simulations for the coupled fluid flow and heat transport processes are based on the finite element method. In the model, one geological layer is dissected by a dipping fault. Sensitivity analyses are conducted to quantify the effects of the fault's transmissivity on the fluid flow and thermal field. Different fault models are compared with a model where no fault is present to evaluate the effect of varying fault transmissivity. The results show that faults have a significant impact on the hydrothermal field. Varying either the fault zone width or the fault permeability will result in relevant differences in the pressure, velocity and temperature field. A linear relationship between fault zone width and fluid velocity is found, indicating that velocities increase with decreasing widths. The faults act as preferential pathways for advective heat transport in case of highly transmissive faults, whereas almost no fluid may be transported through poorly transmissive faults.
Environmental earth sciences
10.1007/s12665-012-2212-z
1866-6280
1866-6299
wos:2011-2013
WOS:000327457600013
Cherubini, Y (reprint author), GFZ German Res Ctr Geosci, Helmholtz Ctr Potsdam, D-14473 Potsdam, Germany., yvonne.cherubini@gfz-potsdam.de
German Federal Ministry of Education and Research in the programme"
Spitzenforschung in den neuen Landern [03G0671A/B/C]
Yvonne Cherubini
Mauro Cacace
Guido Blöcher
Magdalena Scheck-Wenderoth
eng
uncontrolled
Hydrothermal field
eng
uncontrolled
3-D numerical simulations
eng
uncontrolled
Inclined faults
eng
uncontrolled
Fault zone
eng
uncontrolled
Coupled fluid flow and heat transport
eng
uncontrolled
Finite elements
Referiert
Institut für Geographie und Geoökologie
Institut für Geoökologie
Institut für Umweltwissenschaften und Geographie
62925
2022
2022
eng
26
1
2022
article
GeoScienceWorld
McLean
1
2022-05-13
2022-05-13
--
Controls of the Lithospheric Thermal Field of an Ocean-Continent Subduction Zone
In an ocean-continent subduction zone, the assessment of the lithospheric thermal state is essential to determine the controls of the deformation within the upper plate and the dip angle of the subducting lithosphere. In this study, we evaluate the degree of influence of both the configuration of the upper plate (i.e., thickness and composition of the rock units) and variations of the subduction angle on the lithospheric thermal field of the southern Central Andes (29 degrees-39 degrees S). Here, the subduction angle increases from subhorizontal (5 degrees) north of 33 degrees S to steep (similar to 30 degrees) in the south. We derived the 3D temperature and heat flow distribution of the lithosphere in the southern Central Andes considering conversion of S wave tomography to temperatures together with steady-state conductive thermal modeling. We found that the orogen is overall warmer than the forearc and the foreland and that the lithosphere of the northern part of the foreland appears colder than its southern counterpart. Sedimentary blanketing and the thickness of the radiogenic crust exert the main control on the shallow thermal field (<50km depth). Specific conditions are present where the oceanic slab is relatively shallow (<85 km depth) and the radiogenic crust is thin. This configuration results in relatively colder temperatures compared to regions where the radiogenic crust is thick and the slab is steep. At depths >50km, the temperatures of the overriding plate are mainly controlled by the mantle heat input and the subduction angle. The thermal field of the upper plate likely preserves the flat subduction angle and influences the spatial distribution of shortening.
Lithosphere / Geological Society of America
the Southern Central Andes
10.2113/2022/2237272
1941-8264
1947-4253
outputup:dataSource:WoS:2022
2237272
WOS:000800587100002
Piceda, CR (corresponding author), HelmholtzZentrum GFZ German Res Ctr Geosci, Potsdam, Germany.; Piceda, CR (corresponding author), Univ Potsdam, Inst Geosci, Potsdam, Germany., piceda@gfz-potsdam.de
Deutsche Forschungsgemeinschaft (DFG); Federal State of Brandenburg; DFG; [STR 373/34-1]
Rodriguez Piceda, Constanza
2024-03-11T09:28:20+00:00
sword
importub
filename=package.tar
b983ff66f466f96492e029006c41ba27
false
true
CC-BY - Namensnennung 4.0 International
Constanza Rodriguez Piceda
Magdalena Scheck-Wenderoth
Judith Bott
Maria Laura Gomez Dacal
Mauro Cacace
Michael Pons
Claudia Prezzi
Manfred Strecker
Geowissenschaften
Institut für Geowissenschaften
Referiert
Import
Gold Open-Access
DOAJ gelistet
41822
2017
2017
eng
45
81
37
644
postprint
1
2019-02-21
2019-02-21
--
The Kenya rift revisited
We present three-dimensional (3-D) models that describe the present-day thermal and rheological state of the lithosphere of the greater Kenya rift region aiming at a better understanding of the rift evolution, with a particular focus on plume-lithosphere interactions. The key methodology applied is the 3-D integration of diverse geological and geophysical observations using gravity modelling. Accordingly, the resulting lithospheric-scale 3-D density model is consistent with (i) reviewed descriptions of lithological variations in the sedimentary and volcanic cover, (ii) known trends in crust and mantle seismic velocities as revealed by seismic and seismological data and (iii) the observed gravity field. This data-based model is the first to image a 3-D density configuration of the crystalline crust for the entire region of Kenya and northern Tanzania. An upper and a basal crustal layer are differentiated, each composed of several domains of different average densities. We interpret these domains to trace back to the Precambrian terrane amalgamation associated with the East African Orogeny and to magmatic processes during Mesozoic and Cenozoic rifting phases. In combination with seismic velocities, the densities of these crustal domains indicate compositional differences. The derived lithological trends have been used to parameterise steady-state thermal and rheological models. These models indicate that crustal and mantle temperatures decrease from the Kenya rift in the west to eastern Kenya, while the integrated strength of the lithosphere increases. Thereby, the detailed strength configuration appears strongly controlled by the complex inherited crustal structure, which may have been decisive for the onset, localisation and propagation of rifting.
Postprints der Universität Potsdam : Mathematisch Naturwissenschaftliche Reihe
insights into lithospheric strength through data-driven 3-D gravity and thermal modelling
10.25932/publishup-41822
urn:nbn:de:kobv:517-opus4-418221
1866-8372
online registration
Solid Earth 8 (2017) pp. 45–81 DOI 10.5194/se-8-45-2017
false
false
CC-BY - Namensnennung 4.0 International
Judith Sippel
Christian Meeßen
Mauro Cacace
James Mechie
Stewart Fishwick
Christian Heine
Magdalena Scheck-Wenderoth
Manfred Strecker
Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
644
eng
uncontrolled
east-african rift
eng
uncontrolled
cenozoic Turkana depression
eng
uncontrolled
seismic velocity structure
eng
uncontrolled
Northern Kenya
eng
uncontrolled
upper-mantle
eng
uncontrolled
Mozambique belt
eng
uncontrolled
continental lithosphere
eng
uncontrolled
crustal structure
eng
uncontrolled
structure beneath
eng
uncontrolled
wave tomography
Geowissenschaften
open_access
Mathematisch-Naturwissenschaftliche Fakultät
Referiert
Open Access
Universität Potsdam
https://publishup.uni-potsdam.de/files/41822/pmnr644.pdf
61977
2022
2022
eng
22
3
23
article
American Geophysical Union
Washington
1
2022-03-15
2022-03-15
--
Long-Term Lithospheric Strength and Upper-Plate Seismicity in the Southern Central Andes, 29 degrees-39 degrees S
We examined the relationship between the mechanical strength of the lithosphere and the distribution of seismicity within the overriding continental plate of the southern Central Andes (SCA, 29 degrees-39 degrees S), where the oceanic Nazca Plate changes its subduction angle between 33 degrees S and 35 degrees S, from subhorizontal in the north (<5 degrees) to steep in the south (similar to 30 degrees). We computed the long-term lithospheric strength based on an existing 3D model describing variations in thickness, density, and temperature of the main geological units forming the lithosphere of the SCA and adjacent forearc and foreland regions. The comparison between our results and seismicity within the overriding plate (upper-plate seismicity) shows that most of the events occur within the modeled brittle domain of the lithosphere. The depth where the deformation mode switches from brittle frictional to thermally activated ductile creep provides a conservative lower bound to the seismogenic zone in the overriding plate of the study area. We also found that the majority of upper-plate earthquakes occurs within the realm of first-order contrasts in integrated strength (12.7-13.3 log Pam in the Andean orogen vs. 13.5-13.9 log Pam in the forearc and the foreland). Specific conditions characterize the mechanically strong northern foreland of the Andes, where seismicity is likely explained by the effects of slab steepening.
Geochemistry, geophysics, geosystems
10.1029/2021GC010171
1525-2027
outputup:dataSource:WoS:2022
e2021GC010171
WOS:000774719600001
Piceda, CR (corresponding author), HelmholtzZentrum GFZ German Res Ctr Geosci, Potsdam, Germany.; Piceda, CR (corresponding author), Univ Potsdam, Inst Geosci, Potsdam, Germany., piceda@gfz-potsdam.de
Deutsche Forschungsgemeinschaft (DFG); Federal State of Brandenburg; under the International Research Training Group IGK2018 "SuRfAce; processes, TEctonics and Georesources: The Andean foreland basin of; Argentina" (STRATEGy), DFG [STR 373/34-1]; Projekt DEAL
Piceda, Constanza Rodriguez
2023-12-20T12:21:44+00:00
sword
importub
filename=package.tar
09d09e02668fa1322a95a028dc9ee7b8
2027201-7
false
true
CC-BY - Namensnennung 4.0 International
Constanza Rodriguez Piceda
Magdalena Scheck-Wenderoth
Mauro Cacace
Judith Bott
Manfred Strecker
eng
uncontrolled
subduction zone
eng
uncontrolled
Andes
eng
uncontrolled
rheology
eng
uncontrolled
seismicity
eng
uncontrolled
flat-slab
Geowissenschaften
Institut für Geowissenschaften
Referiert
Import
Gold Open-Access
DOAJ gelistet
55486
2017
2017
eng
45
81
37
8
article
Copernicus
Göttingen
1
2017-01-16
2017-01-16
--
The Kenya rift revisited
We present three-dimensional (3-D) models that describe the present-day thermal and rheological state of the lithosphere of the greater Kenya rift region aiming at a better understanding of the rift evolution, with a particular focus on plume-lithosphere interactions. The key methodology applied is the 3-D integration of diverse geological and geophysical observations using gravity modelling. Accordingly, the resulting lithospheric-scale 3-D density model is consistent with (i) reviewed descriptions of lithological variations in the sedimentary and volcanic cover, (ii) known trends in crust and mantle seismic velocities as revealed by seismic and seismological data and (iii) the observed gravity field. This data-based model is the first to image a 3-D density configuration of the crystalline crust for the entire region of Kenya and northern Tanzania. An upper and a basal crustal layer are differentiated, each composed of several domains of different average densities. We interpret these domains to trace back to the Precambrian terrane amalgamation associated with the East African Orogeny and to magmatic processes during Mesozoic and Cenozoic rifting phases. In combination with seismic velocities, the densities of these crustal domains indicate compositional differences. The derived lithological trends have been used to parameterise steady-state thermal and rheological models. These models indicate that crustal and mantle temperatures decrease from the Kenya rift in the west to eastern Kenya, while the integrated strength of the lithosphere increases. Thereby, the detailed strength configuration appears strongly controlled by the complex inherited crustal structure, which may have been decisive for the onset, localisation and propagation of rifting.
Solid earth
insights into lithospheric strength through data-driven 3-D gravity and thermal modelling
10.5194/se-8-45-2017
1869-9510
1869-9529
wos:2017
WOS:000394058400001
Sippel, J (reprint author), GFZ German Res Ctr Geosci, Sect 6 1 & 2 2, D-14473 Potsdam, Germany., sippel@gfz-potsdam.de
2022-07-07T07:16:38+00:00
sword
importub
filename=package.tar
4fde76f80a8cbea3f2c1f0e3bf62e925
false
true
CC-BY - Namensnennung 4.0 International
Judith Sippel
Christian Meessen
Mauro Cacace
James Mechie
Stewart Fishwick
Christian Heine
Magdalena Scheck-Wenderoth
Manfred Strecker
Geowissenschaften
Institut für Geowissenschaften
Referiert
Import