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dc.contributor.authorNowald, Nicolas
dc.date.accessioned2010-10-12T18:55:14Z
dc.date.available2010-10-12T18:55:14Z
dc.date.issued2004
dc.identifier.urihttp://hdl.handle.net/11858/00-1735-0000-0001-3157-B
dc.description.abstractMarine snow, underwater cameras, particle flux, aggregation, suspended particulate matter, particle transport. - This study focusses on the vertical distribution and transportation pathways of marine particles off NW-Africa with aid of optical methodologies. A profiling camera system and a remotely operated vehicle (ROV) was used for in-situ observations on the distribution, transport processes and sinking behaviour of marine particulate matter. Between the regional areas of investigation Cape Blanc, Dakhla and Cape Bojador significant differences could be observed with respect to distribution and transportation patterns. These differences are primarily related to the different primary production conditions between the investigation areas. Primary production is the most important factor for the abundance of particulate matter, where highest particle concentrations in the entire water column were seen off Cape Blanc. Next to primary production, water depth, currents and density gradients are factors influencing the particle distribution patterns. With respect to the prevailing transport processes, the Cape Blanc region is characterised by vertically orientated transport patterns. In addition to the continuous supply of large, relatively fast sinking particle aggregates a sinking event could be documented for the first time in-situ in the water column. These events deliver huge amounts of particulate matter from the ocean surface ...
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherUniv. Bremen
dc.rights.urihttp://e-docs.geo-leo.de/rights
dc.subject.ddc551
dc.titleDistribution and transportation pathways of marine particulate matter off Northwest Africa
dc.typemonograph
dc.identifier.doi10.23689/fidgeo-207
dc.identifier.ppn392109824
dc.type.versionpublishedVersion
dc.relation.collectionGeologische Wissenschaften
dc.description.typethesis


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