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Markus Brüning
Report of GLOMAR PhD student Markus Brüning about his research stay at the National Oceanography Centre Southampton (NOCS), UK from 1 January - 31 March 2008
Southampton is located on the south-coast of England with the NOC in its port overlooking the estuary. It gathers all British marine sciences, and houses oceanographers, biologists, and geoscientists. There are 500 staff and 700 students. The NOC is run by the University of Southampton and the National Environmental Research Council (NERC), where the latter one is comparable to the German DFG. Facilities are available for almost everything marine scientists can whish to do. Of those I only used the sports hall for basketball. For my work a laptop and some software licences were sufficient.
The reason for my stay was to meet side scan specialists, and the interpretation of data we collected south of Pakistan last October. Back then two scientists and three engineers from Southampton ran the Towed Ocean Bottom Instrument (TOBI). Working together with Dr Tim Le Bas, who developed the PRISM software for TOBI processing, I achieved improvements of the localization of the side scan imagery. I reprocessed data with the more accurate gyro compass heading instead of the track heading. Earlier TOBI’s positions were calculated from cable-length and ship’s positions. I compared the imagery with GPS-located bathymetry features. Several shifts of 200 m across track were the consequence. These points were very important to me. I intended to find and compare places of fluid escape on the seafloor on sonar and video data. From ROV observations in November 2007 I knew the size of seep-indicating bivalves fields of only several tens of metres in extend.
My interpretation continued after the shipboard work, now with more time and intensity. Surfing around the improved survey data in IVS3D FLEDERMAUS, a 3D viewer, revealed some more pockmarks and possible mud volcanoes. Taking a look on the imagery together with Dr Bramley Murton I learned to interpret even more parts of the backscatter image as seep-related. It was a great experience to learn from his years and years of work with TOBI data. After talking to other members of the Geology and Geophysics group, Prof Doug Masson, Dr Angus Best, Prof Tim Minshull, and Dr Veerle Huvenne, I became assured in my interpretation and limitations thereof. I found a zonation of the seep activity from surface indicators on the seafloor. The coming months I will use to write findings up for a publication.
My internship in Southampton gave me many deep insights into another research institution, based on different laws and funding systems. I met many interesting and welcoming people. My horizons were widened by talking to and learning from them. The NOC and its people are great for a foreign stay.
http://www.noc.soton.ac.uk
The reason for my stay was to meet side scan specialists, and the interpretation of data we collected south of Pakistan last October. Back then two scientists and three engineers from Southampton ran the Towed Ocean Bottom Instrument (TOBI). Working together with Dr Tim Le Bas, who developed the PRISM software for TOBI processing, I achieved improvements of the localization of the side scan imagery. I reprocessed data with the more accurate gyro compass heading instead of the track heading. Earlier TOBI’s positions were calculated from cable-length and ship’s positions. I compared the imagery with GPS-located bathymetry features. Several shifts of 200 m across track were the consequence. These points were very important to me. I intended to find and compare places of fluid escape on the seafloor on sonar and video data. From ROV observations in November 2007 I knew the size of seep-indicating bivalves fields of only several tens of metres in extend.
My interpretation continued after the shipboard work, now with more time and intensity. Surfing around the improved survey data in IVS3D FLEDERMAUS, a 3D viewer, revealed some more pockmarks and possible mud volcanoes. Taking a look on the imagery together with Dr Bramley Murton I learned to interpret even more parts of the backscatter image as seep-related. It was a great experience to learn from his years and years of work with TOBI data. After talking to other members of the Geology and Geophysics group, Prof Doug Masson, Dr Angus Best, Prof Tim Minshull, and Dr Veerle Huvenne, I became assured in my interpretation and limitations thereof. I found a zonation of the seep activity from surface indicators on the seafloor. The coming months I will use to write findings up for a publication.
My internship in Southampton gave me many deep insights into another research institution, based on different laws and funding systems. I met many interesting and welcoming people. My horizons were widened by talking to and learning from them. The NOC and its people are great for a foreign stay.
http://www.noc.soton.ac.uk