U.S. Geological SurveyOpen-File Report 2006-1247

| High-resolution chirp seismic reflection data acquired from the Cap de Creus shelf and canyon area, Gulf of Lions, Spain in 2004*by*
Eric Grossman1, Patrick E. Hart2, Michael E. Field1, and Peter Triezenberg2

2006

1 U.S. Geological Survey, Santa Cruz, CA 95060>2 U.S. Geological Survey, Menlo Park, CA 94025                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
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| HomeIntroductionPrevious StudiesData Acquisition and ProcessingInteractive MapData TableAcknowledgementsReferences CitedMetadataCMG Home PageSearch CMG Abstract
 						Seismic reflection data were collected from the Cap de Creus  						shelf and canyon in the southwest portion of the Gulf of Lions in  						October 2004. The data were acquired using the U.S. Geological  						Survey‘s (USGS) high-resolution Edgetech CHIRP 512i seismic  						reflection system aboard the R/V Oceanus. Data from the shipboard  						3.5 kHz echosounder were also collected but are not presented here.  						The seismic reflection data were collected as part of EuroSTRATAFORM  						funded by the Office of Naval Research.  					

 						In October 2004, more than 200 km of high resolution seismic  						reflection data were collected in water depths ranging 30 m - 600 m.  						All data were recorded with a Delph Seismic PC-based digital  						recording system and processed with Delph Seismic software.  						Processed sections were georeferenced into tiff images for digital  						archive, processing and display. Penetration ranged 20-80 m. The  						data feature high quality vertical cross-section imagery of numerous  						sequences of Quaternary seismic stratigraphy. 					

 						The report includes trackline maps showing the location of the  						data, as well as both digital data files (SEG-Y) and images of all  						of the profiles. The data are of high quality and provide new  						information on the location and thickness of sediment deposits  						overlying a major erosion surface on the Cap de Creus shelf; they  						also provide new insight into sediment processes on the walls and in  						the channel of Cap de Creus Canyon. These data are under study by  						researchers at the US Geological Survey, the University of  						Barcelona, and Texas A and M University. Copies of the data are  						available to all researchers. |
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**URL: http://pubs.usgs.gov/of/2006/1247/index.html** 						For more information, contact: Eric Grossman 						maintained by Michael Diggleslast modified November 2, 2006 (mfd)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |