Christopher J. Bean
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View article: Observations and interpretations of high-frequency volcanic tremor produced under varying seismic-acoustic amplitude ratios on Mt. Etna
Observations and interpretations of high-frequency volcanic tremor produced under varying seismic-acoustic amplitude ratios on Mt. Etna Open
We present a comprehensive, high-resolution seismic-acoustic dataset from Mt. Etna acquired through a large, unprecedented deployment of seismometers and microphones in the summit region, highlighting rarely reported high-frequency (12–15H…
View article: Complex patterns of multiple diffusive source areas for high-frequency volcanic tremor on Mt. Etna
Complex patterns of multiple diffusive source areas for high-frequency volcanic tremor on Mt. Etna Open
In this study we present results from an unprecedented, dense, high-resolution seismic de- ployment on Mt. Etna that reveal rarely observed high-frequency tremor, predominantly in the 12–15Hz band. Such signals are typically overlooked at …
View article: A Shallow Reflector Beneath Krafla Volcano, NE Iceland, Detected With Seismic Migration of Local Earthquake Phases
A Shallow Reflector Beneath Krafla Volcano, NE Iceland, Detected With Seismic Migration of Local Earthquake Phases Open
View article: A new subsurface temperature model for Ireland from joint geophysical–petrological inversion of seismic, surface heat flow and petrophysical data
A new subsurface temperature model for Ireland from joint geophysical–petrological inversion of seismic, surface heat flow and petrophysical data Open
SUMMARY High-quality maps of subsurface temperature and the geothermal gradient are useful when assessing the geothermal potential of a region. However, determining geothermal potential is a challenge when direct measurements of in-situ te…
View article: Statistical Analyses of Plastic Deformation Events via Computer Vision: Case Study of Additive Manufactured Microstructures
Statistical Analyses of Plastic Deformation Events via Computer Vision: Case Study of Additive Manufactured Microstructures Open
With the ongoing development of high-throughput characterization approaches for metallic materials, full-field measurements and their rapid statistical analysis have become increasingly essential for capturing material heterogeneities and …
View article: Fin whale song recordings by onshore seismometers open new horizons for cetacean coastal monitoring
Fin whale song recordings by onshore seismometers open new horizons for cetacean coastal monitoring Open
View article: Determining Offshore Ocean Significant Wave Height (SWH) Using Continuous Land-Recorded Seismic Data: An Example from the Northeast Atlantic
Determining Offshore Ocean Significant Wave Height (SWH) Using Continuous Land-Recorded Seismic Data: An Example from the Northeast Atlantic Open
Long-term continuous and reliable real-time ocean wave height data are important for climatologists, offshore industries, leisure craft users, and marine forecasters. However, maintaining data continuity and reliability is challenging due …
View article: Improving passive reflection seismic imaging in complex geological settings through site effect reduction: application to Krafla volcano, Iceland
Improving passive reflection seismic imaging in complex geological settings through site effect reduction: application to Krafla volcano, Iceland Open
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 ene…
View article: Premed pressure: examining whether premed students experience more academic stress compared to non-premeds
Premed pressure: examining whether premed students experience more academic stress compared to non-premeds Open
Participants perceived that premed students experience greater academic stress than their counterparts; however, we found no significant differences in academic stress reported among students in our sample ( P > 0.05). Students with lower …
View article: Observations and interpretations of high-frequency volcanic tremor produced under varying seismic-acoustic amplitude ratios on Mt. Etna
Observations and interpretations of high-frequency volcanic tremor produced under varying seismic-acoustic amplitude ratios on Mt. Etna Open
View article: A new subsurface temperature model for Ireland from joint geophysical–petrological inversion of seismic, surface heat flow and petrophysical data
A new subsurface temperature model for Ireland from joint geophysical–petrological inversion of seismic, surface heat flow and petrophysical data Open
High-quality maps of subsurface temperature and the geothermal gradient are useful when assessing the geothermal potential of a region. However, determining geothermal potential is a challenge when direct measurements of in-situ temperatur…
View article: Decoupled joint inversion with variable splitting: example scheme for magnetotelluric, seismic and gravity data
Decoupled joint inversion with variable splitting: example scheme for magnetotelluric, seismic and gravity data Open
SUMMARY We present a general framework for multiphysics joint inversion of any number of geophysical data sets. Its main feature is the use of the variable splitting approach: an auxiliary multiparameter model space is introduced in which …
View article: Understanding DAS records and their response with full-waveform modelling
Understanding DAS records and their response with full-waveform modelling Open
Distributed Acoustic Sensing (DAS) can provide unprecedented spatial resolution and sensitivity to a wide frequency band. The instrument response of the interrogated optical fibre cables, however, is largely unknown and difficult to separa…
View article: Secondary microseism event characterisation offshore Catania using DAS Data
Secondary microseism event characterisation offshore Catania using DAS Data Open
The continuous Earth ground vibrations known as microseisms that are produced by wind driven surface gravity waves dominate the seismic noise spectrum and are closely tied to storm activity. Distributed Acoustic Sensing (DAS) technology ex…
View article: Using DAS with an Optical Fibre Cable in Galway Bay for Ocean Noise Monitoring
Using DAS with an Optical Fibre Cable in Galway Bay for Ocean Noise Monitoring Open
The oceans are a vast and dynamic part of our planet’s ecosystem, especially in a geophysical and oceanographic sense. The sea state is naturally constantly changing as a result of underlying currents, ocean surface waves and the tid…
View article: ACTIVE CONTROL OF ACOUSTIC NOISE IN A SMALL ENCLOSURE
ACTIVE CONTROL OF ACOUSTIC NOISE IN A SMALL ENCLOSURE Open
View article: Estimating ocean wave heights in Northeast Atlantic using land-based microseism data
Estimating ocean wave heights in Northeast Atlantic using land-based microseism data Open
Various techniques are employed to monitor ocean Significant Wave Heights (SWH), such as insitu buoys, numerical ocean wave modeling, and satellite altimetry. Each method comes with its set of advantages and limitations in terms of spatial…
View article: An overview of tremor and icequake types during the 2015 Eastern Skaftá jökulhlaup, Iceland
An overview of tremor and icequake types during the 2015 Eastern Skaftá jökulhlaup, Iceland Open
Ice-covered volcanoes regularly cause subglacial floods called jökulhlaups. These may be caused by volcanic eruptions but more often they are associated with geothermal activity beneath the ice. Within this presentation we will study …
View article: The shallow subsurface characterization in relation to geothermal resources: Harnessing Passive Seismic Signals for Subsurface Imaging
The shallow subsurface characterization in relation to geothermal resources: Harnessing Passive Seismic Signals for Subsurface Imaging Open
This research illustrates how seismic interferometry using body and surface waves can be applied to various passive noise sources such as trains and borehole drilling to image and characterize the shallow subsurface. The work has a particu…
View article: Understanding unrest and dynamic triggering processes on Sierra Negra, Galápagos Islands.
Understanding unrest and dynamic triggering processes on Sierra Negra, Galápagos Islands. Open
Dynamic earthquake triggering refers to the phenomenon where local seismic activity is induced by dynamic stress disturbances, originating from teleseismic earthquakes. An understanding of dynamic triggering on volcanoes offers a window in…
View article: 3D joint inversion of regional magnetotelluric, seismic, gravity and magnetic datasets to image lithospheric structure of Ireland
3D joint inversion of regional magnetotelluric, seismic, gravity and magnetic datasets to image lithospheric structure of Ireland Open
Regional gravity and magnetic surveys are essential sources of information about the structure and geodynamics of the lithosphere. However, geologically meaningful inversion of gravity and magnetic data usually requires integration with ot…
View article: Predicting near-surface seismic data and velocity models using synthetically-trained deep learning methods: applications in data-rich environments
Predicting near-surface seismic data and velocity models using synthetically-trained deep learning methods: applications in data-rich environments Open
Recent advances in machine learning offer a new way for Earth Scientists to make predictions about geological subsurface properties. In particular, methods based on Fourier Neural Operators (FNOs) are increasingly being used as a substitut…
View article: Near-surface effects in seismic wavefields at Krafla volcano (NE Iceland): characterization and mitigation. 
Near-surface effects in seismic wavefields at Krafla volcano (NE Iceland): characterization and mitigation.  Open
Seismic imaging of small-scale geological features in volcanic regions is challenging due to the often heterogeneous subsurface, causing extensive wave scattering and limited coherence in the wavefields. A well-known example that illustrat…
View article: Full-waveform modelling of coupling and site effects for DAS cables
Full-waveform modelling of coupling and site effects for DAS cables Open
The use of optical fibre cables to sense ground motion is one of the most researched topics in seismology at present day. By using the technique of Distributed Acoustic Sensing (DAS), a single fibre can be turned into thousands of seismic …
View article: Characterisation and locations of volcanic high frequency tremor above 10 Hz on Mount Etna
Characterisation and locations of volcanic high frequency tremor above 10 Hz on Mount Etna Open
When it comes to volcanic tremor, low frequency signals (below 5 Hz) are well investigated. Such tremor signals can usually be linked to magma movement or gas fluctuations. However, little is known about seismic tremor signals on Mount Etn…
View article: Empirical insights into ocean acoustic wave propagation and source localization using ocean-bottom seismometers
Empirical insights into ocean acoustic wave propagation and source localization using ocean-bottom seismometers Open
Human activities in the marine environment coupled with the efficient propagation of acoustic waves, have significantly increased ocean noise levels. This rise poses a threat to marine biodiversity, especially impacting vocal-dependent mar…
View article: Mapping thermal conductivity in Ireland to determine geothermal potential
Mapping thermal conductivity in Ireland to determine geothermal potential Open
High-quality maps of the geothermal gradient and temperature are essential when assessing the geothermal potential of a region. However, determining geothermal potential is a challenge when direct measurements of in situ temperature and th…
View article: Determining subsurface temperature & lithospheric structure from joint geophysical-petrological inversion: A case study from Ireland
Determining subsurface temperature & lithospheric structure from joint geophysical-petrological inversion: A case study from Ireland Open
View article: Full-waveform simulation of DAS records, response and cable-ground coupling
Full-waveform simulation of DAS records, response and cable-ground coupling Open
SUMMARY Over the past several years, the use of optical fibre cables as ground motion sensors has become a central topic for seismologists, with successful applications of distributed acoustic sensing (DAS) in various key fields such as se…
View article: Subaerial and subglacial seismic characteristics of the largest measured jökulhlaup from the eastern Skaftá cauldron, Iceland
Subaerial and subglacial seismic characteristics of the largest measured jökulhlaup from the eastern Skaftá cauldron, Iceland Open
Subglacial floods cause seismic tremors that can be located and tracked in space and time using a seismic array. Here, we shed light on the generating mechanisms of the seismic signals observed during the largest measured flood from the ea…