Thibaut Barreyre

Thibaut Barreyre
University of Bergen | UiB · Department of Earth Science

Ph.D.

About

34
Publications
5,204
Reads
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336
Citations
Citations since 2016
21 Research Items
247 Citations
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
Additional affiliations
March 2017 - present
University of Bergen
Position
  • Researcher
May 2016 - January 2017
Institut Français de Recherche pour l'Exploitation de la Mer
Position
  • PostDoc Position
January 2014 - January 2016
Woods Hole Oceanographic Institution
Position
  • PostDoc Position
Education
September 2010 - November 2013
Institut de Physique du Globe de Paris
Field of study
  • Marine Geophysics
September 2009 - September 2010
IPGP / ENS
Field of study
  • Geophysics
September 2007 - September 2010
Ecole Normale Supérieure de Paris
Field of study
  • Earth Sciences & Physics

Publications

Publications (34)
Article
The permeability of the oceanic crust exerts a primary influence on the vigor of hydrothermal circulation at mid-ocean ridges, but it is a difficult to measure parameter that varies with time, space, and geological setting. Here we develop an analytical model for the poroelastic response of hydrothermal exit-fluid velocities and temperatures to oce...
Article
We use the time delay between tidal loading and exit-fluid temperature response for hydrothermal vents to model the poroelastic behavior and shallow upflow zone (SUZ) effective permeability structure of three mid-ocean ridge (MOR) sites with different spreading rates. Hydrothermal vents at Lucky Strike field exhibit relatively small phase-lags corr...
Article
We deployed autonomous temperature sensors at black smoker chimneys, cracks, and diffuse flow areas at the Lucky Strike hydrothermal field (Mid-Atlantic Ridge, ~37°17’N) between summer 2009 and summer 2012 and contemporaneously measured tidal pressures and currents as part of the long-term MoMAR experiment to monitor hydrothermal activity. We class...
Article
Full-text available
Here we demonstrate with a study of the Lucky Strike hydrothermal field that image mosaicing over large seafloor areas is feasible with new image processing techniques, and that repeated surveys allow temporal studies of active processes. Lucky Strike mosaics, generated from >56,000 images acquired in 1996, 2006, 2008 and 2009, reveal the distribut...
Article
The cruise mainly focused on two areas in the Hola Trough: at node 7 where methane seeps have been mapped, and further north (node 1) where are located cold coral reefs. The aim of the cruise was to characterize the seafloor and local biology, bubbles characteristics, the water column chemistry and methane dynamic. We also performed corals transpla...
Article
Full-text available
Comprehensive knowledge of the distribution of active hydrothermal vent fields along midocean ridges is essential to understanding global chemical and heat fluxes and endemic faunal distributions. However, current knowledge is biased by a historical preference for on-axis surveys. A scarcity of high-resolution bathymetric surveys in off-axis region...
Article
Full-text available
Hydrothermal venting at the Lucky Strike hydrothermal field, located on the Mid‐Atlantic Ridge, is associated with faulting linked to the tectonic dismemberment of a central axial volcano. Radium‐226/Ba dating of hydrothermal barite indicates that hydrothermal venting is at least 6,600 years old, and that Lucky Strike is one of the youngest known v...
Presentation
Activity along the Arctic Mid-Ocean Ridge (AMOR) has been progressively explored over the past 20 years. Along the ridge, processes such as dike intrusion and faulting cause earthquakes. We focus on an area around the Loki’s castle hydrothermal vent field (LCVF), located on the Mohn ultra-slow spreading ridge. Ultra-slow spreading systems are stron...
Article
Full-text available
The unique ecosystems and biodiversity associated with mid-ocean ridge (MOR) hydrothermal vent systems contrast sharply with surrounding deep-sea habitats, however both may be increasingly threatened by anthropogenic activity (e.g., mining activities at massive sulphide deposits). Climate change can alter the deep-sea through increased bottom tempe...
Article
Full-text available
Microearthquake hypocenters were analyzed in the Krýsuvík geothermal area in SW-Iceland with data taken from two consecutive passive seismic surveys, 2005 and 2009. Five years prior to the 2005 survey, this area was struck by an earthquake initiating a major top-to-bottom fluid migration in the upper crust. We observe from our surveys a complex bot...
Article
Full-text available
Permeability controls energy and matter fluxes in deep‐sea hydrothermal systems fueling a 'deep biosphere' of microorganisms. Here, we indirectly measure changes in sub‐seafloor crustal permeability, based on the tidal response of high‐temperature hydrothermal vents at the East Pacific Rise 9°50’N preceding the last phase of volcanic eruptions duri...
Article
The structure of the oceanic upper volcanic crust is less understood at slow-spreading ridges than at faster ones. Its construction is dominated by pillow lavas, reflecting lower effusion rates than those at fast spreading ridges, where sheet and lobate flows are common and flow off-axis while thickening the extrusive volcanic layer. Based on optic...
Article
Submarine hydrothermal activity is responsible for heat and chemical exchanges through the seafloor. Shallow-water hydrothermal systems (SWHS), while identified around the globe, are often studied in a way that is less comprehensive than their deep-ocean counterparts (e.g., along ridges), where systematic optical and acoustic mapping is more preval...
Article
Full-text available
Understanding clast dispersal from subaqueous volcanism is hampered by uncertainty in the source and extent of seafloor deposits. Extensive sampling in situ of seafloor deposits from the 2012 submarine eruption of Havre volcano provides an ideal opportunity to assess subaqueous dispersal. The 2012 Havre eruption produced 14 lavas/domes, a pumice ra...
Article
We investigate the potential of satellite imagery to map and monitor the activity of shallow-water hydrothermal systems, which are often found around volcanic islands. For this study, we used publicly available data and proprietary WorldView-2 satellites images, with spectral bands that can penetrate up to water depths of 30 m. Shallow water hydrot...
Article
Full-text available
Plain Language Summary Crustal permeability represents one of the main controlling factors for development and persistence of hydrothermal circulation at mid‐ocean ridges. However, this parameter remains poorly constrained. Using recently obtained seismic velocity model and available velocity‐permeability relationships, we calculate a number of per...
Conference Paper
Full-text available
The operational EMSO-Azores deep-sea observatory provides a unique opportunity combining yearly hydrothermal fluid sampling along with continuous monitoring of physical parameters (temperature, seismicity, pressure,…) to better constrain hydrothermal fluid flow dynamics both in time and space at the Lucky Strike vent field. Repeated sampling at thi...
Data
We deployed autonomous temperature sensors at black smoker chimneys, cracks, and diffuse flow areas at the Lucky Strike hydrothermal field (Mid-Atlantic Ridge, ~37°17'N) between summer 2009 and summer 2012 and contemporaneously measured tidal pressures and currents as part of the long-term MoMAR experiment to monitor hydrothermal activity. We class...
Conference Paper
Full-text available
Newly developed image processing techniques, including gigamosaicing, video-based 3D terrain reconstruction, and video-based fluid velocimetry have provided key information to understand the distribution, nature, and quantification of hydrothermal activity at a deep sea vent field (Lucky Strike, Mid-Atlantic Ridge). These imaging techniques have be...
Article
Full-text available
The relative heat carried by diffuse versus discrete venting of hydrothermal fluids at mid-ocean ridges is poorly constrained and likely varies among vent sites. Estimates of the proportion of heat carried by diffuse flow range from 0% to 100% of the total axial heat flux. Here, we present an approach that integrates imagery, video, and temperature...
Article
Seafloor imagery provides detailed and accurate constrain on the distribution, geometry, and nature of hydrothermal outflow, and its links to the ecosystems that they sustain. Repeated surveys allow us to evaluate the temporal variability of these systems. Geo-referenced and co-registered photomosaics of the Lucky Strike hydrothermal field (Mid Atl...
Article
Two styles of fluid flow at the seafloor are widely recognized: (1) localized outflows of high temperature (>300°C) fluids, often black or grey color in color (``black smokers'') and (2) diffuse, lower temperature (
Article
Near-bottom, high-resolution geophysical surveys carried out by remotely operated vehicles (ROVs) provide unprecedented resolution of the seafloor structure, either from multibeam acoustic systems or from imagery (video and electronic still images). Limitations in image processing techniques and capabilities have greatly restricted the exploitation...
Article
The Lucky Strike hydrothermal site, located South of the Azores along the Mid-Atlantic Ridge, is one of the largest and best-known active hydrothermal fields along the ridge system. This site within the MoMAR area is also the target for the installation in 2010 of a pilot deep-sea observatory with direct telemetry to land, to be part of the Europea...

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Projects

Projects (3)
Project
Decipher periodic and episodic variability in exit-fluid records. Time series analysis.
Project
Estimate permeability of 0-age oceanic crust beneath hydrothermal systems.
Project
Estimate heat output at hydrothermal systems. Quantify partitioning of heat flux between diffuse and focused flow.