RV POSEIDON Fahrtbericht / Cruise Report POS 453 & 458 “COMM3D” : Crustal Structure and Ocean Mixing observed with 3D Seismic Measurements, 20.05. – 12.06.2013 (POS453) Galway, Ireland – Vigo, Portugal ; 24.09. – 17.10.2013 (POS458) Vigo, Portugal – Vigo, Portugal

Papenberg, Cord and Klaeschen, Dirk, eds. (2014) RV POSEIDON Fahrtbericht / Cruise Report POS 453 & 458 “COMM3D” : Crustal Structure and Ocean Mixing observed with 3D Seismic Measurements, 20.05. – 12.06.2013 (POS453) Galway, Ireland – Vigo, Portugal ; 24.09. – 17.10.2013 (POS458) Vigo, Portugal – Vigo, Portugal . GEOMAR Report, N.Ser. 018 . Helmholtz-Zentrum für Ozeanforschung Kiel, Kiel, 66 pp. DOI 10.3289/GEOMAR_REP_NS_18_2014.

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Abstract

Cruise P453 & P458 with R/V POSEIDON aim to conduct 3D wide-angle ocean bottom
recording (OBR) data during the acquisition of 3D multichannel seismic (MCS) reflection data
(D. Sawyer, Rice University & T.J. Reston, Birmingham) and to analyze and interpret a highresolution
densely sampled 2D OBR wide-angle profile. The primary goal of the wide-angle data
will be to provide an accurate and detailed 3D P-wave velocity model for the 3D reflection data.
Particularly the densely sampled 2D profile will help to determine the degree of thinning within
the crust and the degree of serpentinisation of the uppermost mantle. The collection of 3D MCS
data gives the unique opportunity to obtain densely sampled water column reflection data and to
analyze spatial and temporal (4D) variations of the internal wave field which will yield new
understanding and insights into water mass mixing processes offshore west Iberia.
Contemporaneously hydrographic data will be collected to calibrate and analyze the oceanic
thermohaline structures originating from the interaction between Atlantic waters and the
Mediterranean Sea Outflow.

Document Type: Report (Cruise Report)
Keywords: RV Poseidon ; Cruise report ; POS453 ; POS458 ; COMM3D
Research affiliation: OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-GDY Marine Geodynamics
DOI etc.: 10.3289/GEOMAR_REP_NS_18_2014
ISSN: 2193-8113
Expeditions/Models/Experiments:
Date Deposited: 15 Sep 2014 10:19
Last Modified: 15 Sep 2014 10:25
URI: http://oceanrep.geomar.de/id/eprint/25620

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