A5080924293- Seismic Waves and Analysis
- Seismic Imaging and Inversion Techniques
- earthquake and tectonic studies
- Seismology and Earthquake Studies
- Earthquake Detection and Analysis
- Geological and Geochemical Analysis
- Geophysical Methods and Applications
- Landslides and related hazards
- High-pressure geophysics and materials
- Methane Hydrates and Related Phenomena
- Geophysics and Sensor Technology
- Cryospheric studies and observations
- Drilling and Well Engineering
- Reservoir Engineering and Simulation Methods
- Geological and Geophysical Studies
- Geological Modeling and Analysis
- Underwater Acoustics Research
- Complex Systems and Time Series Analysis
- Geophysical and Geoelectrical Methods
- Geochemistry and Geologic Mapping
- Marine and environmental studies
- Geological formations and processes
- Geology and Paleoclimatology Research
- Hydraulic Fracturing and Reservoir Analysis
- Structural Health Monitoring Techniques
EarthTech International (United States)
2024-2025
Dublin Institute For Advanced Studies
2015-2025
Arizona State University
2025
University College Dublin
2013-2024
Irish Centre for Research in Applied Geosciences
2020-2021
Information Technology Laboratory
2018
National Security Agency
2018
Instituto de Estudos Avançados da Universidade de São Paulo
2014
Weatherford College
2014
Henan Tianguan Group (China)
2014
Abstract Tomorrow’s Cities is the £20m United Kingdom Research and Innovation (UKRI) Global Challenge Fund (GCRF) Urban Disaster Risk Hub. The Hub aims to support delivery of Nation’s Sustainable Development Goals priorities 1 3 Sendai Framework for Reduction (DRR) 2015-2030. We work in four cities: Istanbul, Kathmandu, Nairobi, Quito. collaborate with local, national, global organisations strengthen disaster risk governance by undertaking integrated, multi-scale, multi-disciplinary research...
Academic stress is one of the primary factors threatening university students' well-being and performance. Undergraduate students who are working towards applying to medical school, defined as being on pre-medicine or "premed" pathway, suspected have higher academic compared their peers not premed. However, what contribute for premed well understood. We sought answer: Do undergraduates perceive premeds higher, same, lower than non-premeds? How do levels between these groups actually differ?...
Abstract Recent large basaltic eruptions began after only minor surface uplift and seismicity, resulted in caldera subsidence. In contrast, some at Galápagos Island volcanoes are preceded by prolonged, amplitude elevated seismicity. These systems also display long-term intra-caldera uplift, or resurgence. However, a scarcity of observations has obscured the mechanisms underpinning such behaviour. Here we combine unique multiparametric dataset to show how 2018 eruption Sierra Negra...
In situ measurements of petrophysical properties the upper crust from wire-line logs provide a direct means assessing fluctuations in these with depth, and thus allow for statistical characterization crustal heterogeneity. Wire-line cluster nine boreholes (1000–1500 m deep) have been analysed using four different techniques: autocorrelation, semi-variogram, rescaled range power spectra. Six are vertical, remainder inclined. All penetrate clastic pyroclastic rock. The analysis techniques...
Long‐period (LP) seismicity on volcanoes is thought to be associated with moving fluids or resonating fluid‐filled conduits, hence LP moment tensor (MT) source inversions might have a direct bearing our understanding of the plumbing system. Using 3‐D full wavefield simulations and 2‐D sensitivity kernels in digital elevation model Mount Etna, we investigate influence near‐surface volcanic structure signals inversions. Contrary common wisdom crustal seismology find that, despite their...
Abstract Seismologists are eagerly seeking new and preferably low-cost ways to map track changes in the complex structure of top few kilometers crust. By understanding it better, they can build on what is known regarding important, practical issues. These include telling us whether imminent earthquakes volcanic eruptions generating telltale underground signs hazard, about mitigation induced seismicity such as from deep injection wastewater, how Earth its atmosphere couple, where accessible...
A particle-based model for the simulation of wave propagation is presented. The based on solid-state physics principles and considers a piece rock to be Hookean material composed discrete particles representing fundamental intact units. These interact at their contact points experience reversible elastic forces proportional displacement from equilibrium. Particles are followed through space by numerically solving equations motion. We demonstrate that numerical implementation this scheme...
A three‐dimensional elastic lattice method for the simulation of seismic waves is presented. The model consists particles arranged on a cubic which interact through central force term and bond‐bending force. Particle disturbances are followed space by numerically solving their equations motion. vacuum free‐surface boundary condition implicit in method. We demonstrate that numerical implementation capable modelling wave propagation with complex topography. This achieved comparing scheme...
The persistent occurrence of long period (LP) events at Mt Etna became apparent with the installation first fixed broad‐band seismic network in late 2003. Repeating similar LP from Nov. ‘03 to Sept. ‘04 indicate a non‐destructive source process. We perform moment tensor (MT) inversions on stacked high S/N ratio representative signal, conducting grid search for geometry and L2‐inversion time function. Results NNW‐SSE oriented resonating sub‐vertical crack as most probable source. This result...
Abstract From December 2005 to January 2006, an anomalous degassing episode was observed at Mount Etna, well‐correlated with increase in volcanic tremor, and the almost complete absence of eruptive activity. In same period, more than 10,000 very long period (VLP) events were detected. Through moment tensor inversion analyses VLP pulses, we obtained quantitative estimates volumetric variations associated these events. This allowed a investigation relationship between seismic activity, gas...
Abstract Glacier runoff and melt from volcanic geothermal activity accumulates in glacier dammed lakes glaciated areas around the world. These eventually drain, creating hazardous subglacial floods that are usually only confirmed after they exit reach local river systems, which can be many tens of kilometres flood source. Once travel rapidly to populated areas. Such delayed detection represents a potentially lethal shortcoming early-warning. Here we demonstrate how advance early-warning...
Abstract Trains are now recognized as powerful sources for seismic interferometry based on noise correlation, but the optimal use of these signals still requires a better understanding their source mechanisms. Here, we present simple approach modeling train-generated inspired by early work in engineering community, assuming that waves emitted sleepers regularly spaced along railway and excited passing train wheels. Our reproduces well seismological observations tremor-like emergent harmonic...
Abstract Induced seismicity is one of the main factors that reduces societal acceptance deep geothermal energy exploitation activities, and felt earthquakes are reason for closure projects. Implementing innovative tools real-time monitoring forecasting induced was aims recently completed COSEISMIQ project. Within this project, a temporary seismic network deployed in Hengill region Iceland, location nation’s two largest power plants. In paper, we release raw continuous waveforms catalogues...
This chapter explores the opportunities and challenges of using Artificial Intelligence (AI) Machine Learning (ML) in volcanology. It starts by introducing basic concepts AI ML. Then, it discusses current potential applications ML volcanology, including recent advances petrology, geophysics, remote sensing, ground monitoring. We highlight that can potentially have a transformative effect understanding volcanic systems, from deciphering architecture magma feeding systems pre-eruptive...
Summary Reflection imaging at volcanoes presents significant challenges due to the highly heterogeneous subsurface, which generates complex wavefields characterized by substantial wave scattering. These scattered waves obscure coherent energy, such as reflections from geological structures in subsurface. In this study, we develop processing strategies address limitations of high-frequency (5-20 Hz) passive reflection Krafla, a volcanic caldera NE Iceland. Krafla is among few locations...
Fin whales, the second-largest animals on Earth, produce some of most intense vocalizations in animal kingdom. Monitoring these sounds using ocean-based hydrophones is crucial for studying their distribution and social behaviour, although obtaining real-time data remains challenging. In this study, we explore whether vocalizing near-coastal fin whales can be detected located widely onshore seismometers. By analysing publicly available from existing seismic stations, show that whale songs...
High-quality maps of the geothermal gradient are essential when assessing potential a region. However, determining is challenge in regions where direct measurements situ temperature and thermal property information sparse (e.g. Ireland). Significant risk reduction required to understand heat resources before they can be fully exploited. Furthermore, individual geophysical methods sensitive range parameters, not solely temperature.We determine by inverting seismic, addition other geophysical,...
Locating and monitoring groundwater flow is key to understand the health of aquifers, identify possible pathways for flooding events that can affect citizens infrastructures. Geophysical methods such as Electrical Resistivity Tomography have been widely used image location water-saturated areas in shallow underground (
The oceans are a large part of our planet’s environment with highly diverse acoustic and seismic noise fields. These fields made up plethora natural (marine wildlife, ocean microseisms, earthquakes) anthropogenic (ship traffic, seafloor construction) sources. It is very costly time consuming to deploy maintain offshore sensors study this wide array Distributed sensing (DAS) applied on submarine fibre optic cables offers an unprecedented spatial resolution within the for detailed...
Volcanoes generate complex seismic wavefields due to their heterogeneous geological structure, making it challenging obtain accurate reflection images of interiors. However, understanding the internal structure and dynamics volcanoes is essential for enhancing monitoring capabilities improving eruption forecasting. In this study, we apply controlled-source techniques passive imaging at Krafla volcano, NE Iceland. globally recognised as one few sites where magma was directly encountered...
Travel-time tomography uses the travel times of seismic waves between pairs sources and receivers to constrain elastic properties subsurface. However, low rate natural seismicity in Ireland limits application standard local earthquake tomography. This study wave arrival from controlled explosions generated during quarry mining activities refine constraints on velocity structure Irish crust.Previous studies have utilised (i) surface dispersion teleseismic earthquakes, providing broad insights...
Ocean generated low-frequency seismic noise signals called microseisms are linked to the ocean environment, subsurface and atmosphere. The energy associated with is closely related wave amplitude, globally throughout seasons, shows great potential in analysis of climate variability.To comprehend generation propagation mechanisms secondary offshore Sicily, a detailed Distributed Acoustic Sensing (DAS) data being conducted on MEOC fibre optic cable INFN-LNS submarine infrastructure Catania....