A5077208994- Seismology and Earthquake Studies
- Seismic Waves and Analysis
- earthquake and tectonic studies
- Seismic Imaging and Inversion Techniques
- High-pressure geophysics and materials
- Geological and Geochemical Analysis
- Earthquake Detection and Analysis
- Reservoir Engineering and Simulation Methods
- Geological and Tectonic Studies in Latin America
- Geophysics and Sensor Technology
- Landslides and related hazards
- Drilling and Well Engineering
- Risk and Safety Analysis
- Hydraulic Fracturing and Reservoir Analysis
- Geological and Geophysical Studies
- Meteorological Phenomena and Simulations
- Geological formations and processes
- Geophysics and Gravity Measurements
- Geological and Geophysical Studies Worldwide
- Geochemistry and Geologic Mapping
- Geological Modeling and Analysis
- Geology and Paleoclimatology Research
- Rock Mechanics and Modeling
- CO2 Sequestration and Geologic Interactions
- Earthquake and Tsunami Effects
ETH Zurich
2020-2024
Swiss Ornithological Institute
2023-2024
Gesundheitsdienst
2021
University of Wisconsin–Madison
2018-2020
Michigan Technological University
2013-2018
Albany Research Institute
2016
Japan External Trade Organization
2015
University of Milano-Bicocca
2013
Abstract Robust automatic event detection and location is central to real-time earthquake monitoring. With the increase of computing power data availability, automated workflows that utilize machine learning (ML) techniques have become increasingly popular; however, ML-based classical still face challenges when applied analysis microseismic data. These seismic sequences are often characterized by short interevent times and/or low signal-to-noise ratio (SNR). Full waveform methods do not rely...
Abstract Geothermal energy is a green source of power that could play an important role in climate‐conscious portfolios; enhanced geothermal systems (EGS) have the potential to scale up exploitation thermal resources. During hydraulic fracturing, fluids injected under high‐pressure cause rock mass fail, stimulating fractures improve fluid connectivity. However, this increase pore pressure can also reactivate pre‐existing fault systems, potentially inducing earthquakes significant size....
SUMMARY Distributed acoustic sensing (DAS) is becoming increasingly popular in microseismic monitoring operations. This data acquisition technology converts fibre-optic cables into dense arrays of seismic sensors that can sample the wavefield produced by active or passive sources with a high spatial density, over distances ranging from few hundred metres to tens kilometres. However, standard analysis procedures have several limitations when dealing (intersensor spacing up submetre scale)...
SUMMARY The determination of seismic event locations with sparse networks or single-borehole systems remains a significant challenge in observational seismology. Leveraging the advantages location approach HADES (eartHquake locAtion via Distance gEometry Solvers), which was initially developed for locating clustered seismicity recorded at two stations, through solution Geometry Problem, we present here an improved version methodology: HADES-R (HADES-Relative). Where previously needed minimum...
Consolidating state-of-the-art science into guidelines provides a path forward for managing induced seismicity risks and highlights avenues future research.
Consolidating state-of-the-art science into guidelines provides a path forward for managing induced seismicity risks and highlights avenues future research.
Enhanced Geothermal Systems (EGS) comprise technologies aiming to harness geothermal energy from the Earth's subsurface by enhancing productivity of existing or naturally occurring reservoirs. Unlike conventional systems (hydrothermal systems) that rely on permeable rock formations, EGS involve creating fractures in low permeability impermeable mass through hydraulic stimulation. has potential expand geographical reach utilization and increase overall efficiency sustainability power...
Monitoring induced seismicity is an indispensable part of risk management during the creation and operation enhanced geothermal systems. Due to relative scarcity manually labeled, informative datasets seismicity, it can be challenging evaluate performance monitoring tools ahead time. We have created continuous synthetic seismic waveform data for sequence at Utah Frontier Observatory Research in Geothermal Energy (FORGE). The are based on a catalog that mimicks injection-induced FORGE...
During the summer of 2024, a large-scale deployment 340 SmartSolo IGU-16 3C 5Hz nodal seismometers took place across 116 locations within East Rift Zone (ERZ) Kīlauea volcano, on Island Hawaiʻi. Each site housed three instruments to overcome limited battery capacity approximately 30 days, allowing array operate continously for months. The is designed push developments in high-resolution mantle-to-crust seismic imaging, temporal monitoring, seismicity characterization and...
The world's energy supply depends critically on hydraulic fracturing (HF): HF operations utilize microseismicity to enhance subsurface permeability, so that hydrocarbons or geothermal heat can be extracted economically.  Unfortunately, also has the potential induce larger earthquakes – with some projects being prematurely terminated because of perceived earthquake risks.  To de-risk HF, we use a suite novel statistical tests called CAP-tests discern if physical...
Ambient noise interferometry has emerged as a powerful technique for tracking changes in volcanic systems by providing continuous data on seismic velocity variations (dv/v). Due to its sensitivity structural (e.g., crack opening or closing), magma intrusions, and external factors like precipitation, this method offers valuable insights into dynamic processes. Here, we use ambient study the September 2024 East Rift Zone (ERZ) eruption of Kīlauea volcano. This preceding intrusions...
In 2021, a remarkable natural earthquake sequence initiated in the Haute-Ajoie region (Canton Jura, Switzerland), which provides new insights on how present-day deformation is accommodated Jura fold-and-thrust belt (JFTB) northern foreland of Alps. The ML 4.1 mainshock December 24. located south village Réclère, triggered an unusual that has been lasting for at least 3 years. Initially, few aftershocks occurred days after mainshock, and aftershock activity rapidly ceased...
Abstract The 14 November 2016 M w 7.8 Kaikōura earthquake in the northern South Island, New Zealand, involved highly complex, multifault rupture. We combine data from a temporary network and permanent national seismograph to repick relocate ~2,700 aftershocks of M≥3 that occurred between 13 May 2017. Automatic phase‐picking is carried out using REST, newly developed hybrid method whose pick quality assessed by comparing automatic picks for subset 138 events with analysts' picks. Aftershock...
Abstract The 2016 M7.8 Kaikōura earthquake is one of the most complex earthquakes in recorded history, with significant rupture at least 21 crustal faults. Using a matched‐filter detection routine, precise cross‐correlation pick corrections, and accurate location relocation techniques, we construct catalog 33,328 between 2009 2020 on adjacent to faults that ruptured earthquake. We also compute focal mechanisms for 1,755 used as templates. this reassess pathway In particular show that: (a)...
Abstract. Scientists from different disciplines at ETH Zurich are developing a dynamic, harmonised, and user-centred earthquake risk framework for Switzerland, relying on continuously evolving catalogue generated by the Swiss Seismological Service (SED) using national seismic networks. This uses all available information to assess various stages facilitates widespread dissemination communication of resulting information. Earthquake products services include operational (loss) forecasting...
Abstract The interpretation of seismotectonic processes within the uppermost few kilometers Earth’s crust has proven challenging due to often significant uncertainties in hypocenter locations and focal mechanisms shallow seismicity. Here, we revisit seismic sequence Saint-Ursanne March April 2000 apply advanced seismological analyses reduce these uncertainties. sequence, consisting five earthquakes which largest one reached a local magnitude (M L ) 3.2, occurred vicinity two critical sites,...
On June 15, 2020, at 21:16 UTC, a locally-felt earthquake of magnitude 4.2 struck Unalaska Island, Alaska, ∼15 km west the town and large fishing port Dutch Harbor. The event was followed by M4.1 00:34 UTC several M3+ aftershocks, initiating prolific sequence with hundreds earthquakes recorded into late December. all locate about 12 southeast summit Makushin Volcano 7 to 10 depth. To date, no eruptive activity or other surface changes have been observed volcano in webcam images, GPS InSAR....
Abstract From June to August 2021, we deployed a dense seismic nodal network across the Hengill geothermal area in southwest Iceland image and characterize faults high-temperature zones at high resolution. The comprised 498 geophone nodes spread northern Nesjavellir southern Hverahlíð fields was complemented by an existing permanent temporary backbone of total 44 short-period broadband stations. In addition, recorded distributed acoustic sensing data along two fiber optic telecommunication...
Abstract With substantial postglacial rhyolite eruptions and ongoing rapid uplift, the Laguna del Maule volcanic field in southern Andes provides an exceptional opportunity to study dynamics of active silicic magmatic system. Using 4,093 P arrivals from 137 distant earthquakes recorded by 44 local stations over ∼ 2.25 years, we conduct teleseismic tomography image crustal structure down 40 km below field. A prominent low‐velocity body at depths between 0 12 sea level (b.s.l.), characterized...
Abstract The Laguna del Maule volcanic field (LdMVF) in Chile, a rapidly inflating silicic system without historical eruption, is intersected by active regional faults. LdMVF provides an opportunity to observe how faults influence, accommodate, or are driven actively deforming large system. Here we use Compressed High Intensity Radar Pulse (CHIRP) acoustic reflection data map the fault network sediments captured within eponymous lake at and combine our maps with history, earthquake...
Abstract The application of machine learning techniques in seismology has greatly advanced seismological analysis, especially for earthquake detection and seismic phase picking. However, approaches still face challenges generalizing to data sets that differ from their original training setting. Previous studies focused on retraining or transfer‐learning models these scenarios, but require high‐quality labeled sets. This paper demonstrates a new approach augmenting already trained without the...