Evaluation of seismic reflector slopes with a Yoyo-CTD.

Krahmann, Gerd , Papenberg, Cord , Brandt, Peter and Vogt, Martin (2009) Evaluation of seismic reflector slopes with a Yoyo-CTD. Open Access Geophysical Research Letters, 36 . L00D02. DOI 10.1029/2009GL038964.

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In spring 2007 a dedicated seismic and oceanographic experiment was conducted in the Gulf of Cadiz. Employing two research vessels seismic and hydrographic observations were made contemporaneously and in close proximity. At a 12 hour long station inside a Meddy a conductivity-temperature-depth (CTD) probe was lowered and raised repeatedly while the seismic vessel conducted a repetitive survey on tracks nearby. Over the period 17 CTD profiles were collected covering the depth interval from 500 to 1700 m. The CTD data show the Meddy's elevated temperatures and salinities as well as varying intrusive features. When converted into reflection coefficients and convoluted with the seismic source signal the CTD data agrees well with nearby seismic data. The comparison of the temporal/spatial slopes of CTD-derived reflectors with those of isopycnals shows a good agreement when the slopes are determined over intervals shorter than 4 hours.

Document Type: Article
Keywords: seismic oceanography; R.V. POSEIDON; POS350
Research affiliation: OceanRep > The Future Ocean - Cluster of Excellence
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-PO Physical Oceanography
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-GDY Marine Geodynamics
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1029/2009GL038964
ISSN: 0094-8276
Projects: Future Ocean
Date Deposited: 16 Nov 2009 09:40
Last Modified: 23 Sep 2019 23:01
URI: http://oceanrep.geomar.de/id/eprint/5722

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