JOINT RESEARCH PROJECT "GEOLOGY AND GEOPHYSICS OF THE ANDREW BAIN FRACTURE ZONE, SW INDIAN RIDGE"

NATIONAL ITALIAN ANTARCTIC PROJECT - CNR
GIN - RUSSIAN ACADEMY OF SCIENCES

REPORT ON THE MORPHOBATHYMETRIC,
MAGNETOMETRIC, GRAVIMETRIC,
REFLECTION SEISMIC
AND DREDGING INVESTIGATIONS
DURING CRUISE S23-AB06 ABOARD R/V STRAKHOV

ISMAR-CNR, Bologna (PNRA)
GIN-RAS, Moscow
SIO-UCSD, La Jolla and UNCW, Wilmington (NSF)
LDEO, New York
and
the S23-AB06 Survey Team

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ISMAR-CNR Cataloging-In-Publication data: ISMAR Bologna - TECHNICAL REPORT N.100
Report on the morphobathymetric, magnetometric, gravimetric, multichannel reflection seismic and dredging investigations during cruise S23-AB06 aboard R/V A.N.Strakhov. by Ligi M., Bonatti E., Skolotnev S, Peyve A., Grindlay N.R., Sclater J., Bortoluzzi G., Brunelli D., Cipriani A., Mercuri R., Muccini F., Paganelli E., Zaffagnini F., Takeuki C., Baramykov Y., Chamov N., Erofeev S., Eskin A., Kolodyazhnyy S., Pertsev A., Semenov V., Rastorgyev V., Tsukanov N., Turko N., Yefimov V. and Zotov L.

Includes bibliographical reference and index.
1.SW Indian Ocean 2.Fracture Zone 3. Tectonics 5. Petrology 6. Geochemistry

Abstract - A summary of methodologies, technical details and ship-board results of a swath bathymetry, geophysical and geological survey in the Andrew Bain F.Z., SW Indian Ocean is presented. The cruise was done in a cooperative framework between PNRA and GIN-RAS, and utilized the R/V Strakhov of GIN-RAS. The F.Z. from 52S to 44S was investigated. During the survey, detailed, full coverage bathymetry, multichannel, single channel and SBP reflection seismic, magnetometric, gravimetric lines, bottom sampling were carried out in the Area.

Sommario - Vengono presentati le metodologie e l'insieme dei risultati ottenuti durante una campagna di rilievi batimetrici e geofisici nella zona di frattura Andrew Bain nell'Oceano Indiano occidentale. La crociera e' parte del Progetto nazionale Ricerche in Antartide, ed e' stata utilizzata la nave da ricerca R/V Strakhov del GIN-RAS. La zona della Frattura da 52S a 44S e' stata investigata. Si e' ottenuta una mappa batimetrica dettagliata con sistema 'multibeam', sono state fatte indagini di sismica a riflessione multicanale e SBP ad alta risoluzione, sono stati raccolti dati magnetometrici ed e' stato campionato il fondo marino .

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Copyright ©  2006 by ISMAR-CNR - Via Gobetti 101 40129 Bologna, Italy.

Production Notes - The document was edited with standard text editors, typeset with L.Lamport's L^ATEX, translated to PostScript with dvips and printed with an A4 laser printer. The full production was done on a GNU Linux box with GNU-GPL software. Converted to HTML by N.Drakos's L^ATEX2HTML and to PDF by Alladin Ghostscripts's ps2pdf. Most of the maps included were produced by Wessel and Smith's GMT package. Some drawings were produced by xfig (www.xfig.org). Non PostScript images were converted by John Bradley's xv or other public-domain packages, among them convert.