Analysis of central western Europe deformation using GPS and seismic data

Tesauro, Magdala; Hollenstein, Christine; Egli, R.; Geiger, Alain; Kahle, H.‐G.

doi:10.1016/j.jog.2006.08.001

Cited by 45 publications

(37 citation statements)

References 74 publications

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“…This result confirms the decrease of compression from south to north, which has been suggested by the seismological studies [48,49,52]. Based on GPS measurements and modeling studies on the GPS velocities, the crustal motions of the URG area are characterized by NW directed horizontal compressional rates between 0.1 and 2.9 mm/year with an E-W extension of 0.5 to 1.5 mm/ year [53][54][55][56]. The NNE-SSW trending URG, under the present day stress field, is subjected to sinistral transtension with NW directed horizontal stress (S H ).…”

Section: Discussion Of Emr Measurementssupporting

confidence: 84%

Active Structures in Central Upper Rhine Graben, SW Germany: New Data from Landau Area using Electromagnetic Radiation (EMR) Technique and Cerescope

Hagag¹,

Obermeyer²

2017

J Geol Geophys

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Two conjugate sets of active faults oriented NNE-SSW and NNW-SSE have been detected at Landau area in SW Germany. These faults follow the old trends of the rift-related structures predominating in the Upper Rhine Graben (URG), which originated during Late Eocene-Miocene time. Linear and horizontal measurements were performed by using the Cerescope device and interpreted, applying the Electromagnetic Radiation (EMR) Technique. Linear EMRprofiles were helpful for mapping active faults, while the main horizontal stress (σ H , N to NNE) was easily identified with EMR-horizontal measurements. Reactivation of rift-related structures of the Upper Rhine Graben at Landau area produces a new system of active shallow fractures following old trends, and has been detected through the present study by Cerescope applying the EMR-Technique. The present results imply that the Enhanced Geothermal System (EGS) to the south of Landau has a great impact on reactivation of the pre-existing rift-related faults by mechanical hydro-fracturing occurring within the reservoir rocks underneath the area.

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Section: Discussion Of Emr Measurementssupporting

confidence: 84%

Active Structures in Central Upper Rhine Graben, SW Germany: New Data from Landau Area using Electromagnetic Radiation (EMR) Technique and Cerescope

Hagag¹,

Obermeyer²

2017

J Geol Geophys

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“…This part of the Rhenish Massif has been affected by complex major tectonic and magmatic processes. Today's uplift rates (≤3.5 mm/year; Campbell et al 2002) are attributed mainly to plume-related thermal expansion of the mantle-lithosphere (Ritter et al 2001, Walker et al 2005, Tesauro et al 2006, crustal thinning and associated volcanism (Clauser 2002), active rifting processes with motion discontinuities of 0.06-1.7 mm/year (Hinzen 2003), and possibly crustal-scale folding and/or the reactivation of Variscan thrust faults under the present-day NW-SEdirected compressional stress field (Hinzen 2003;Dèzes et al 2004;Ahorner 1983, Ziegler and Dèzes 2005, Tesauro et al 2006). The EEVF is characterized by intensive intra-continental Quaternary volcanism (100 volcanic eruption centres) and several alternating phases of volcanic activity and non-eruptive phases during the last 700 ka.…”

Section: Introductionmentioning

confidence: 99%

First Identification of Periodic Degassing Rhythms in Three Mineral Springs of the East Eifel Volcanic Field (EEVF, Germany)

Berberich

Berberich²,

Ellison

et al. 2019

Geosciences

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We present a geochemical dataset acquired during continual sampling over 7 months (biweekly) and 4 weeks (every 8 hours) in the Neuwied Basin, a part of the East Eifel Volcanic Field (EEVF). We used a combination of geochemical, geophysical, and statistical methods to identify potential causal processes underlying the correlations of degassing patterns of four gases (He, Rn, CO 2 , O 2 ), earth tides, and tectonic processes in three mineral springs (Nette, Kärlich and Kobern). We explored whether temporal relations in gas concentrations in the three mineral springs could be indicators of hidden faults through which the gases migrate to the surface from deeper underground. Our results do not confirm CO 2 as a primary carrier gas for trace gases in all springs. Temporal analyses of the CO 2 -He couple indicate that Nette and Kärlich are directly linked via a continuous tectonic fault in an ENE-WSW trending direction.There is also evidence that Kärlich and Kobern (NNE-SSW fault system) and Nette and Kobern (NW-SE fault system) are tectonically linked. These fault linkages are unknown previously but could be related to the rising numbers of earthquake events occurring in this area since 2010.We did not find any evidence that weather processes (e.g., barometric pressure), earth tides, or low local earthquake magnitudes actively modulate degassing. The volcanic activity in the EEVF is dormant but not extinct and to understand and monitor its magmatic and degassing systems, we recommend bi-weekly samplings at minimum.

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“…Then, we selected from among alternative velocity estimates for the same site based on three simple principles: (1) velocities with significantly smaller formal uncertainties are preferred, (2) given comparable formal uncertainty, the velocity published more recently is preferred, and (3) if the previous rules conflict or yield no preference, then the velocity most consistent with that of neighboring sites is preferred. The result of this process was a set of 510 velocity vectors (Figure 2), including 1 from Grenerczy et al [2000], 217 from McClusky et al [2000], 36 from Nocquet and Calais [2003], 36 from D'Agostino and Selvaggi [2004], 96 from Nyst and Thatcher [2004], 26 from van der Hoeven et al [2005], 42 from Tesauro et al [2006], 15 from Bennett et al [2008], and 41 from Caporali et al [2008]. Typically, the velocities we used from the earlier papers are those of sites which were not reoccupied, or not recomputed, by later authors.…”

Section: Input Datamentioning

confidence: 99%

“…Because standard errors in GPS site velocities are typically 0.5 mm/yr or more, it would require many GPS sites on each side of a single fault to reliably resolve slip at similar heave rates. There is only one case of this geometry: Switzerland, with its extensive deployment of ∼29 permanent GPS sites [ Tesauro et al , 2006], fully surrounds the Helvetic Front fault system of the Alps. Here, our models predict an extensional sense of movement for most of this thrust fault system (except in 8°E–9.5°E) but with very low heave rates (<0.4 mm/yr).…”

Section: Two Alternative Modelsmentioning

confidence: 99%

Exploratory models of long-term crustal flow and resulting seismicity across the Alpine-Aegean orogen

Howe

Bird

2010

Tectonics

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[1] Long-term crustal flow is computed with a kinematic finite element model based on iterated weighted least squares fits to data and prior constraints. Data include 773 fault traces, 106 fault offset rates, 510 geodetic velocities, 2566 principal stress azimuths, and velocity boundary conditions representing the rigid parts of the Eurasia, Africa, and Anatolia plates. Model predictions include long-term velocities, fault slip rates, and distributed permanent strain rates between faults. One model assumes that geodetic velocities measured adjacent to the Aegean Trench reflect a temporarily locked subduction zone; in this case, longterm subduction velocity averages 45 mm/yr and rapid crustal extension is predicted in the southern Aegean Sea. Another model assumes steady creeping subduction; in this case, subduction velocity averages only 29 mm/yr, and the eastern Aegean Seafloor is predicted to be more nearly rigid. Long-term seismicity maps are computed for each model on the basis of the SHIFT hypotheses and previous global calibrations of plate boundary earthquake production. Retrospective comparisons to seismic catalogs are encouraging: map patterns, spatial distribution functions, and total earthquake counts are all comparable. While neither model accurately predicts earthquake rates at all magnitudes, the creeping subduction model is more accurate for strong m6+ events, which dominate the seismic hazard. Citation: Howe, T. M., and P. Bird (2010), Exploratory models of long-term crustal flow and resulting seismicity across the Alpine-Aegean orogen, Tectonics, 29, TC4023,

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Analysis of central western Europe deformation using GPS and seismic data

Cited by 45 publications

References 74 publications

Active Structures in Central Upper Rhine Graben, SW Germany: New Data from Landau Area using Electromagnetic Radiation (EMR) Technique and Cerescope

Active Structures in Central Upper Rhine Graben, SW Germany: New Data from Landau Area using Electromagnetic Radiation (EMR) Technique and Cerescope

First Identification of Periodic Degassing Rhythms in Three Mineral Springs of the East Eifel Volcanic Field (EEVF, Germany)

Exploratory models of long-term crustal flow and resulting seismicity across the Alpine-Aegean orogen

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