Three-dimensional density model of the Earth's crust and the upper mantle for the area of Poland

Grabowska, T.; Bojdys, G.; Dolnicki, J.

doi:10.1016/s0264-3707(97)00001-x

Cited by 38 publications

(24 citation statements)

References 6 publications

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“…4. The S-wave velocity profile was built assuming a typical scaling to the P-wave velocity (v p = 1.73 v s ), while densities of each layer were obtained from Grabowska et al (1998). A constant attenuation factor is used for all layers (Q p = 120 and Q s = 60, Król et al 2013).…”

Section: S Y N T H E T I C M I C Ro S E I S M I C C Ata L O G U Ementioning

confidence: 99%

Monitoring performance using synthetic data for induced microseismicity by hydrofracking at the Wysin site (Poland)

López‐Comino

Cesca

Kriegerowski

et al. 2017

Geophysical Journal International

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S U M M A R YIdeally, the performance of a dedicated seismic monitoring installation should be assessed prior to the observation of target seismicity. This work is focused on a hydrofracking experiment monitored at Wysin, NE Poland. A microseismic synthetic catalogue is generated to assess the monitoring performance during the pre-operational phase, where seismic information only concerns the noise conditions and the potential background seismicity. Full waveform, accounting for the expected spatial, magnitude and focal mechanism distributions and a realistic local crustal model, are combined with real noise recording to produce either event based or continuous synthetic waveforms. The network detection performance is assessed in terms of the magnitude of completeness (M c ) through two different techniques. First, we use an amplitude threshold, taking into the ratio among the maximal amplitude of synthetic waveforms and station-dependent noise levels, for different values of signal-to-noise ratio. The detection probability at each station is estimated for the whole data set and extrapolated to a broader range of magnitude and distances. We estimate an M c of about 0.55, when considering the distributed network, and can further decrease M c to 0.45 using arrays techniques. The second approach, taking advantage on an automatic, coherence-based detection algorithm, can lower M c to ∼ 0.1, at the cost of an increase of false detections. M c experiences significant changes during day hours, in consequence of strongly varying noise conditions. Moreover, due to the radiation patterns and network geometry, double-couple like sources are better detected than tensile cracks, which may be induced during fracking.

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Section: S Y N T H E T I C M I C Ro S E I S M I C C Ata L O G U Ementioning

confidence: 99%

Monitoring performance using synthetic data for induced microseismicity by hydrofracking at the Wysin site (Poland)

López‐Comino

Cesca

Kriegerowski

et al. 2017

Geophysical Journal International

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“…Most of the studies including crustal models in recent years have been made using deep seismic sounding (DSS) data (e.g., Arita et al, 1998;Grabowska et al, 1998;Ergun et al, 2005;d'Acremont et al, 2006). Even though we do not have DSS data, we do attempt to define the interval values of the crust in the study area.…”

Section: Analysis and Interpretationmentioning

confidence: 99%

An aspect of the subsurface structure of the Burdur-Isparta area, SW Anatolia, based on gravity and aeromagnetic data, and some tectonic implications

Dolmaz

2007

Earth Planet Sp

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Gravity and aeromagnetic analyses were conducted in the Burdur-Isparta area of Turkey in order to identify the subsurface structure and tectonics of the region independent of surface cover. The analytic signal of the aeromagnetic anomalies was first calculated to delineate the source fields of these anomalies. The magnetic signatures were found to correlate well with the intrusives associated with the subduction of the African oceanic lithosphere and with the ophiolitic nappes in the region. The residual aeromagnetic anomalies mostly orientate in the N-S direction, implying the presence of remanent magnetization. Based on the shape analysis of aeromagnetic anomalies, the region appears to have rotated clockwise. The magnetic anomalies were found to continue upward to 5 km a.s.l. The upward continued map shows deep effects of the sub-crustal magnetic sources. Based on the Bouguer gravity anomalies, the thickness of the crust in the study area is between 33 and 37.5 km. Major extensive NE-and NW-as well as N-trending faults are identified that coincide with the Lake Burdur, Lake Beysehir and Kovada grabens, respectively. Lake Egirdir is also devoid of any magnetic sources. As a final step, the maxima of the horizontal gradient of the gravity data were calculated. The maxima show that the major geological formations and the structural trends in the area are remarkable. The boundaries of the various geological formations can be identified based on the boundary analysis of the gravity and the analytic signal of the aeromagnetic data. The change in the nature of the anomalies reflects the imprints of intense deformation associated with major tectonic activity of the African-Eurasian plate convergence zone.

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“…1A), and to a lesser ex tent the East Eu ro pean Craton (EEC). The area also cov ers their tec tonic bor der, the NW-SE trending Teisseyre-Tornquist Zone (TTZ; Po¿aryski and Brochwicz-Lewiñski, 1978;Dadlez et al, 1995;Dadlez, 1997a, b;Grabowska et al, 1998;Grabowska and Bojdys, 2001;Kutek, 2001;Grad et al, 2002a) which is among the most im por tant deep lithospheric bound aries in Eu rope (Grad et al, 2002b;Dadlez et al, 2005;Grad and Guterch, 2006a, b;Krzywiec, 2006a). TTZ is re placed to wards the NW by its pro longa tion -the Sorgenfrei-Tornquist Zone (Krzywiec, 2006a;Jarosiñski et al, 2009).…”

Section: Geological Settingmentioning

confidence: 99%

Characterization of petrophysical parameters of the Lower Triassic deposits in a prospective location for Enhanced Geothermal System (central Poland)

Sowiżdżał

Papiernik

Machowski

et al. 2013

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In the years 2010-2013, anal y sis of rocks that build the sed i men tary cov ers in Po land was car ried out from the point of view of uti li za tion of en ergy ac cu mu lated in Hot Dry Rock -used in En hanced Geo ther mal Sys tems (EGS). As a re sult of a number of an a lyt i cal stud ies, the area sit u ated in the cen tral part of Po land was se lected as one of pro spec tive ar eas for lo ca tion of EGS in sed i men tary rocks. This area en com passes a ma jor part of the Mogilno-£ódŸ Trough, a part of the Kujawy Swell and a small frag ment of the Fore-Sudetic Monocline. The most fa vour able con di tions for de vel op ment of EGS oc cur in the Lower Tri as sic de pos its in the Krooeniewice-Kutno vi cin ity, where they are bur ied to depths greater than 5000 m b.s.l., their thick nesses ex ceeds 1500 m, po ros ity is about 3% and per me abil ity is about 0.02-0.1 mD. In the study area, ther mal char acter iza tion of the for ma tion was car ried out for lo ca tion of the EGS in sed i men tary rocks. The tem per a ture at the top of the Lower Tri as sic res er voir is mod elled in the range of 165-175°C. Char ac ter iza tion of petrophysical pa ram e ters was the ba sis for fur ther mod el ling of EGS uti li za tion in this area.

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Three-dimensional density model of the Earth's crust and the upper mantle for the area of Poland

Cited by 38 publications

References 6 publications

Monitoring performance using synthetic data for induced microseismicity by hydrofracking at the Wysin site (Poland)

Monitoring performance using synthetic data for induced microseismicity by hydrofracking at the Wysin site (Poland)

An aspect of the subsurface structure of the Burdur-Isparta area, SW Anatolia, based on gravity and aeromagnetic data, and some tectonic implications

Characterization of petrophysical parameters of the Lower Triassic deposits in a prospective location for Enhanced Geothermal System (central Poland)

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