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18 results on '"Cielesta, Szymon"'

3. SHEER “smart” database: technical note

Author

Cielesta, Szymon, Orlecka-Sikora, Beata, Staszek, Monika, Urban, Paweł, Olszewska, Dorota, Ruigrok, Elmer, Toon, Sam, Picozzi, Matteo, Kwiatek, Grzegorz, Cesca, Simone, López Comino, José Angel, Isherwood, Catherine, Montcoudiol, Nelly, and Jarosławski, Janusz

Published
2019
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5. An open data infrastructure for the study of anthropogenic hazards linked to georesource exploitation

Author

Orlecka-Sikora, Beata, Lasocki, Stanisław, Kocot, Joanna, Szepieniec, Tomasz, Grasso, Jean Robert, Garcia-Aristizabal, Alexander, Schaming, Marc, Urban, Paweł, Jones, Glenda, Stimpson, Ian, Dineva, Savka, Sałek, Piotr, Leptokaropoulos, Konstantinos, Lizurek, Grzegorz, Olszewska, Dorota, Schmittbuhl, Jean, Kwiatek, Grzegorz, Blanke, Aglaja, Saccorotti, Gilberto, Chodzińska, Karolina, Rudziński, Łukasz, Dobrzycka, Izabela, Mutke, Grzegorz, Barański, Adam, Pierzyna, Aleksandra, Kozlovskaya, Elena, Nevalainen, Jouni, Kinscher, Jannes, Sileny, Jan, Sterzel, Mariusz, Cielesta, Szymon, and Fischer, Tomas

Published
2020
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6. Author Correction: An open data infrastructure for the study of anthropogenic hazards linked to georesource exploitation

Author

Orlecka-Sikora, Beata, Lasocki, Stanisław, Kocot, Joanna, Szepieniec, Tomasz, Grasso, Jean Robert, Garcia-Aristizabal, Alexander, Schaming, Marc, Urban, Paweł, Jones, Glenda, Stimpson, Ian, Dineva, Savka, Sałek, Piotr, Leptokaropoulos, Konstantinos, Lizurek, Grzegorz, Olszewska, Dorota, Schmittbuhl, Jean, Kwiatek, Grzegorz, Blanke, Aglaja, Saccorotti, Gilberto, Chodzińska, Karolina, Rudziński, Łukasz, Dobrzycka, Izabela, Mutke, Grzegorz, Barański, Adam, Pierzyna, Aleksandra, Kozlovskaya, Elena, Nevalainen, Jouni, Kinscher, Jannes, Sileny, Jan, Sterzel, Mariusz, Cielesta, Szymon, and Fischer, Tomas

Published
2020
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10. Evidence for subcritical rupture of injection-induced earthquakes

Author

Orlecka-Sikora, Beata and Cielesta, Szymon

Subjects
Toughness, Multidisciplinary, 010504 meteorology & atmospheric sciences, Deformation (mechanics), lcsh:R, Magnitude (mathematics), lcsh:Medicine, Induced seismicity, 010502 geochemistry & geophysics, 01 natural sciences, Article, Environmental impact, Stress (mechanics), 13. Climate action, Fracture (geology), Geotechnical engineering, lcsh:Q, Fluid injection, lcsh:Science, Geothermal gradient, Seismology, Geology, 0105 earth and related environmental sciences
Abstract

Seismicity induced by geo-engineering operations may be hazardous for people, infrastructure and the environment. The crucial information for assessing induced seismic hazards and related risks is knowledge of the time-dependent strength of rocks and the deformation due to fluid injection. Our studies of seismic and injection data from a geothermal field indicate that pressurized injections lead to rock fracturing at stress levels below the rock toughness, i.e., subcritical fracture growth. We provide a relation between the rate of this subcritical fracture growth and the injection rate. Based on this relation, we estimate the maximum subcritical magnitude. We hypothesize that subcritical fracture growth may be controlled by the amount of stress asymmetry, i.e., the relative values of the principal stresses. We discuss the conditions under which the subcritical fracturing regime can transform to a critical state and critical rupture may occur. We present the possibility of using these results in the operational reservoir to manage seismic hazards.

Published
2020
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12. SHEER “smart” database: technical note

Author

non-UU output of UU-AW members, Cielesta, Szymon, Orlecka-Sikora, Beata, Staszek, Monika, Urban, Paweł, Olszewska, Dorota, Ruigrok, Elmer, Toon, Sam, Picozzi, Matteo, Kwiatek, Grzegorz, Cesca, Simone, López Comino, José Angel, Isherwood, Catherine, Montcoudiol, Nelly, Jarosławski, Janusz, non-UU output of UU-AW members, Cielesta, Szymon, Orlecka-Sikora, Beata, Staszek, Monika, Urban, Paweł, Olszewska, Dorota, Ruigrok, Elmer, Toon, Sam, Picozzi, Matteo, Kwiatek, Grzegorz, Cesca, Simone, López Comino, José Angel, Isherwood, Catherine, Montcoudiol, Nelly, and Jarosławski, Janusz

Published
2019

15. IS-EPOS: a platform for anthropogenic seismicity research

Author

Leptokaropoulos, Konstantinos, primary, Cielesta, Szymon, additional, Staszek, Monika, additional, Olszewska, Dorota, additional, Lizurek, Grzegorz, additional, Kocot, Joanna, additional, Lasocki, Stanisław, additional, Orlecka-Sikora, Beata, additional, Sterzel, Mariusz, additional, and Szepieniec, Tomasz, additional

Published
2018
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16. SHEER “smart” database: technical note

Author

Cielesta, Szymon, primary, Orlecka-Sikora, Beata, additional, Staszek, Monika, additional, Urban, Paweł, additional, Olszewska, Dorota, additional, Ruigrok, Elmer, additional, Toon, Sam, additional, Picozzi, Matteo, additional, Kwiatek, Grzegorz, additional, Cesca, Simone, additional, López Comino, José Angel, additional, Isherwood, Catherine, additional, Montcoudiol, Nelly, additional, and Jarosławski, Janusz, additional

Published
2018
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18. Injection-induced earthquakes rupture subcritically in regimes controlled by stress symmetry breaking.

Author

Orlecka-Sikora, Beata and Cielesta, Szymon

Subjects
*SCIENCE education, *ROCK deformation, *RESERVOIRS, *FRACTURE toughness, *EARTHQUAKES, *GEOTHERMAL resources, *ROCK mechanics, *SYMMETRY breaking
Abstract

Characterizing time-dependent deformation and fracturing in rocks is crucial for assessing seismic hazards and related risks. An important aspect of this process is subcritical fracture growth (SFG) and its properties. Under SFG, fractures can grow at stress values lower than the critical fracture toughness. Many laboratory studies have focused on tensile SFG, and some have assessed shear SFG in rocks. Here, we provide evidence for mixed-mode (tensile and shear) SFG in injection-induced seismicity in a geothermal field. We study a relationship between the SFG parameters and the rate of water injection into the reservoir. We analyse the injection rate with the degree of 3D stress anisotropy and find that the SFG regime may be controlled by the degree of the stress asymmetry, i.e., how close intermediate stress is to a transversely anisotropic condition. We observe that a critical rupture occurs when both SFG parameter is higher than 2 and the principal stresses are symmetric. We present a possibility of using these results in the operational reservoir to manage the seismic hazard.This work was supported under the S4CE: "Science for Clear Energy" project, which has received funding from the European Union's Horizon 2020 research and innovation programme, under grant agreement No 764810. The work was also partially supported by statutory activities No 3841/E-41/S/2018 of the Ministry of Science and Higher Education of Poland. [ABSTRACT FROM AUTHOR]

Published
2019

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