Auxiliary Material for Paper 2011GC003990

Structure, temporal evolution, and heat flux estimates from a deep-sea hydrothermal field
derived from seafloor image mosaics

Thibaut Barreyre and Javier Escartin
Marine Geosciences Group, Institut de Physique du Globe de Paris, CNRS, UMR 7154–Univ. Paris Diderot, Sorbonne Paris Cité, Paris, France 

Rafael Garcia
Computer Vision and Robotics Group, University of Girona, Girona, Spain

Mathilde Cannat
Marine Geosciences Group, Institut de Physique du Globe de Paris, CNRS, UMR 7154–Univ. Paris Diderot, Sorbonne Paris Cite, Paris, France

Eric Mittelstaedt
Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA

Ricard Prados
Computer Vision and Robotics Group, University of Girona, Girona, Spain


Barreyre, T., J. Escartín, R. Garcia, M. Cannat, E. Mittelstaedt, and R. Prados (2012),
Structure, temporal evolution, and heat flux estimates from the Lucky Strike deep-sea hydrothermal
field derived from seafloor image mosaics, Geochem. Geophys. Geosyst., 13, Q04007, doi:10.1029/2011GC003990.

Introduction

Auxiliary material for this paper contains examples showing how we estimated the percentage of active venting
area (red) from the total digitized areas (blue) for sites identified as streaks, from in situ photo (up)
and mosaic image (down). Site location is: X = 563704, Y = 4127255.

1. 2011gc003990-fs01.jpg
Figure S1. An oblique image of hydrothermal deposits along a
slope (fault scarp), or ‘streaks’ (see Text for explanation), and the corresponding
vertical view from the mosaic image (top and bottom respectively. The areas circled in
red indicate the source areas for the hydrothermal fluids, and their extent in plan view.
The blue outline in the mosaic indicates the digitized deposits in the interoperation
presented in the paper. The area identified as source corresponds to a small fraction of
the identified hydrothermal deposits remobilized down slope (5% or less).