Imperial College London
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Prof Jenny Collier

Faculty of Engineering, Department of Earth Science & Engineering

Professor of Marine Geophysics
 
 
 
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Contact

 

+44 (0)20 7594 6443jenny.collier CV

 
 
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Location

 

4.46Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Bie:2020:10.1785/0220190147,
author = {Bie, L and Rietbrock, A and Hicks, S and Allen, R and Blundy, J and Clouard, V and Collier, J and Davidson, J and Garth, T and Goes, S and Harmon, N and Henstock, T and van, Hunen J and Kendall, M and Kruger, F and Lynch, L and Macpherson, C and Robertson, R and Rychert, K and Tait, S and Wilkinson, J and Wilson, M},
doi = {10.1785/0220190147},
journal = {Seismological Research Letters},
pages = {237--247},
title = {Alongarc heterogeneity in local seismicity across the lesser antilles subduction zone from a dense oceanbottom seismometer network},
url = {http://dx.doi.org/10.1785/0220190147},
volume = {91},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The Lesser Antilles arc is only one of two subduction zones where slowspreading Atlantic lithosphere is consumed. Slowspreading may result in the Atlantic lithosphere being more pervasively and heterogeneously hydrated than fastspreading Pacific lithosphere, thus affecting the flux of fluids into the deep mantle. Understanding the distribution of seismicity can help unravel the effect of fluids on geodynamic and seismogenic processes. However, a detailed view of local seismicity across the whole Lesser Antilles subduction zone is lacking. Using a temporary oceanbottom seismic network we invert for hypocenters and 1D velocity model. A systematic search yields a 27 km thick crust, reflecting average arc and backarc structures. We find abundant intraslab seismicity beneath Martinique and Dominica, which may relate to the subducted Marathon and/or Mercurius Fracture Zones. Pervasive seismicity in the cold mantle wedge corner and thrust seismicity deep on the subducting plate interface suggest an unusually wide megathrust seismogenic zone reaching ∼65km∼65  km depth. Our results provide an excellent framework for future understanding of regional seismic hazard in eastern Caribbean and the volatile cycling beneath the Lesser Antilles arc.
AU  - Bie,L
AU  - Rietbrock,A
AU  - Hicks,S
AU  - Allen,R
AU  - Blundy,J
AU  - Clouard,V
AU  - Collier,J
AU  - Davidson,J
AU  - Garth,T
AU  - Goes,S
AU  - Harmon,N
AU  - Henstock,T
AU  - van,Hunen J
AU  - Kendall,M
AU  - Kruger,F
AU  - Lynch,L
AU  - Macpherson,C
AU  - Robertson,R
AU  - Rychert,K
AU  - Tait,S
AU  - Wilkinson,J
AU  - Wilson,M
DO  - 10.1785/0220190147
EP  - 247
PY  - 2020///
SN  - 0895-0695
SP  - 237
TI  - Alongarc heterogeneity in local seismicity across the lesser antilles subduction zone from a dense oceanbottom seismometer network
T2  - Seismological Research Letters
UR  - http://dx.doi.org/10.1785/0220190147
UR  - https://pubs.geoscienceworld.org/ssa/srl/article/91/1/237/575207/AlongArc-Heterogeneity-in-Local-Seismicity-across
UR  - http://hdl.handle.net/10044/1/74864
VL  - 91
ER  -
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