Imperial College London

ProfessorJoannaMorgan

Faculty of EngineeringDepartment of Earth Science & Engineering

Professor of Geophysics
 
 
 
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Contact

 

+44 (0)20 7594 6423j.v.morgan

 
 
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Location

 

2.38BRoyal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Arnoux:2017:10.1002/2016GL071990,
author = {Arnoux, GM and Toomey, DR and Hooft, EEE and Wilcock, WSD and Morgan, J and Warner, M and VanderBeek, BP},
doi = {10.1002/2016GL071990},
journal = {Geophysical Research Letters},
pages = {1687--1695},
title = {Seismic evidence that black smoker heat flux is influenced by localized magma replenishment and associated increases in crustal permeability},
url = {http://dx.doi.org/10.1002/2016GL071990},
volume = {44},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - ©2017. American Geophysical Union. All Rights Reserved. Hydrothermal circulation at mid-ocean ridges is responsible for ~25% of Earth's heat flux and controls the thermal and chemical evolution of young oceanic crust. The heat flux of black smoker hydrothermal systems is thought to be primarily controlled by localized magma supply and crustal permeability. Nevertheless, magma chamber characteristics and the nature of crustal permeability beneath such systems remain unclear. Here we apply three-dimensional full-waveform inversion to seismic data from the hydrothermally active Endeavour segment of the Juan de Fuca Ridge to image the upper crust in high resolution. We resolve velocity variations directly above the axial magma chamber that correlate with variations in seismicity, black smoker heat flux, and the depth of the axial magmatic system. We conclude that localized magma recharge to the axial magma lens, along with induced seismogenic cracking and increased permeability, influences black smoker heat flux.
AU - Arnoux,GM
AU - Toomey,DR
AU - Hooft,EEE
AU - Wilcock,WSD
AU - Morgan,J
AU - Warner,M
AU - VanderBeek,BP
DO - 10.1002/2016GL071990
EP - 1695
PY - 2017///
SN - 0094-8276
SP - 1687
TI - Seismic evidence that black smoker heat flux is influenced by localized magma replenishment and associated increases in crustal permeability
T2 - Geophysical Research Letters
UR - http://dx.doi.org/10.1002/2016GL071990
UR - http://hdl.handle.net/10044/1/44530
VL - 44
ER -