Publikationsdatum:
2022-05-25
Beschreibung:
Author Posting. © American Geophysical Union, 2008. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geochemistry Geophysics Geosystems 9 (2008): Q12009, doi:10.1029/2008GC002204.
Beschreibung:
We present a georeferenced photomosaic of the Lucky Strike hydrothermal vent field (Mid-Atlantic Ridge, 37°18′N). The photomosaic was generated from digital photographs acquired using the ARGO II seafloor imaging system during the 1996 LUSTRE cruise, which surveyed a ∼1 km2 zone and provided a coverage of ∼20% of the seafloor. The photomosaic has a pixel resolution of 15 mm and encloses the areas with known active hydrothermal venting. The final mosaic is generated after an optimization that includes the automatic detection of the same benthic features across different images (feature-matching), followed by a global alignment of images based on the vehicle navigation. We also provide software to construct mosaics from large sets of images for which georeferencing information exists (location, attitude, and altitude per image), to visualize them, and to extract data. Georeferencing information can be provided by the raw navigation data (collected during the survey) or result from the optimization obtained from image matching. Mosaics based solely on navigation can be readily generated by any user but the optimization and global alignment of the mosaic requires a case-by-case approach for which no universally software is available. The Lucky Strike photomosaics (optimized and navigated-only) are publicly available through the Marine Geoscience Data System (MGDS, http://www.marine-geo.org). The mosaic-generating and viewing software is available through the Computer Vision and Robotics Group Web page at the University of Girona (http://eia.udg.es/∼rafa/mosaicviewer.html).
Beschreibung:
This work has been supported by the EU Marie Curie
RTNs MOMARNet (OD, RG, JE, LN, JF, NG) and FREESUBNet
(RG, NG, XC), the Spanish Ministry of Science and
Innovation (grant CTM2007–64751; RG, JE), CNRS and
ANR (grant ANR NT05–3_42212, JE), ICREA (LN), and
by the Generalitat de Catalunya (JE, RG). JF has been funded
by MICINN under FPI grant BES-2006-12733 and NG has
been supported by MICINN under the ‘‘Ramon y Cajal’’
program.
Schlagwort(e):
Mid-ocean ridge
;
Photomosaic
;
MoMAR
;
Lucky Strike
;
Hydrothermal field
Repository-Name:
Woods Hole Open Access Server
Materialart:
Article
Format:
application/pdf
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