Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Gregor Hillers"'
Publikováno v:
Bulletin of the Seismological Society of America.
In 2018, the company St1 Oy performed an Enhanced Geothermal System (EGS) experiment using near-real-time seismic monitoring as feedback for the pumping procedure and thus allowing the control of the induced seismicity. Between 4 June and 22 July (49
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7576575f732a531bb04d5526085f8942
https://doi.org/10.5194/egusphere-egu23-7884
https://doi.org/10.5194/egusphere-egu23-7884
Understanding fluid injection induced seismicity is key to safe and successful operations of deep geothermal systems. Efficient geothermal energy extraction by an enhanced geothermal system (EGS) requires increased fluid flow between geothermal wells
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0241f4031826a36049a2bc69a3d9d0a
https://doi.org/10.5194/egusphere-egu23-12756
https://doi.org/10.5194/egusphere-egu23-12756
Publikováno v:
Journal of Geophysical Research: Solid Earth
We analyze envelopes of 233 and 22 $M_{\text L}$0.0 to $M_{\text L}$1.8 earthquakes induced by two geothermal stimulations in the Helsinki, Finland, metropolitan area. We separate source spectra and site terms and determine intrinsic attenuation and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a238c25c0d7414ff301949caf4331d45
http://hdl.handle.net/10138/357930
http://hdl.handle.net/10138/357930
Seismic array processing is routinely used to infer detailed earthquake properties of intermediate and large events, however, the source properties of microseismicity often remain elusive. In this study, we use high signal-to-noise ratio seismograms
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b7f60c68921042de7935fb8ac8925c7
Autor:
Bruno Giammarinaro, Christina Tsarsitalidou, Gregor Hillers, Julien de Rosny, Léonard Seydoux, Stefan Catheline, Michel Campillo, Philippe Roux
Publikováno v:
Geophysical Journal International
Geophysical Journal International, 2023, 232, pp.201-222. ⟨10.1093/gji/ggac247⟩
Geophysical Journal International, 2023, 232, pp.201-222. ⟨10.1093/gji/ggac247⟩
SUMMARY Numerical experiments of seismic wave propagation in a laterally homogeneous layered medium explore subsurface imaging at subwavelength distances for dense seismic arrays. We choose a time-reversal approach to simulate fundamental mode Raylei
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3f5c115a95b193b8935cd149db51d8c
https://hal-insu.archives-ouvertes.fr/insu-03839231/document
https://hal-insu.archives-ouvertes.fr/insu-03839231/document
Autor:
Isabelle Lecomte, Julie Albaric, Ulrich Polom, Nadège Langet, Dave Harris, Gregor Hillers, Matthias Ohrnberger, Daniela Kühn
Publikováno v:
Seismological Research Letters
Seismological Research Letters, Seismological Society of America, 2021, ⟨10.1785/0220200470⟩
Seismological Research Letters, Seismological Society of America, 2021, ⟨10.1785/0220200470⟩
We analyze data from passive and active seismic experiments conducted in the Adventdalen valley of Svalbard in the Norwegian Arctic. Our objective is to characterize the ambient wavefield of the region and to investigate permafrost dynamics through e
Autor:
Gregor Hillers, Tommi Vuorinen, Tuija Luhta, Ilmo Elias Salmenperä, Päivi Mäntyniemi, Toni Veikkolainen, Jari Kortström, Timo Tiira
Publikováno v:
Seismological Research Letters. 92:1581-1591
We present an overview of the seismic networks, products, and services in Finland, northern Europe, and the challenges and opportunities associated with the unique combination of prevailing crystalline bedrock, low natural intraplate seismic backgrou
Autor:
Amir Sadeghi-Bagherabadi, Tom Eulenfeld, Tommi A.T. Vuorinen, Annukka E. Rintamäki, Gregor Hillers
In 2018 and 2020, two weeks-long geothermal reservoir stimulations were performed some 6 km below the Helsinki capital area, Finland. The seismic activity was recorded by a set of surface broadband sensors and 100 geophones installed by the Institute
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e8a531e6662a55827248e0b0965b01f
https://doi.org/10.5194/egusphere-egu22-7486
https://doi.org/10.5194/egusphere-egu22-7486
We have developed a cross-correlation based event detector with the primary application focus on dense, surface-installed temporary seismic networks monitoring the seismicity from a set target area. The event detector is capable of handling a terabyt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e749a58cd8730c43f1b03e47e7c687e
https://doi.org/10.5194/egusphere-egu22-11652
https://doi.org/10.5194/egusphere-egu22-11652