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Citation link: http://nbn-resolving.de/urn:nbn:de:gbv:46-00101875-18
00101875-1.pdf
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In situ detection and characterisation of fluid mud and soft cohesive sediments by dynamic piezocone penetrometer testing


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Other Titles: In situ Detektion und Charakterisierung von Fluid Mud und weichen kohäsiven Sedimenten mittels dynamischer Drucksondierung
Authors: Seifert, Annedore 
Supervisor: Kopf, Achim 
1. Expert: Kopf, Achim 
2. Expert: Mörz, Tobias 
Abstract: 
This thesis presents a novel approach to in situ characterise and classify soft consolidated mud as a function of fluid saturation and to detect fluid mud in its natural environment. A dynamic piezocone penetrometer with pore pressure sensors (CPTU) was deployed in the marine environment of the western Baltic Sea and in the tidally influenced Ems estuary (Germany) to measure in situ strength and pore pressure of the mud types. Additionally this thesis outlines laboratory results about the relationship of the rheological behaviour of natural fluid mud to different parameters to provide substantial validation for numerical modelling studies. The findings will also help to understand the interaction between the newly applied in situ detection technique and the behaviour of fluid mud suspensions which has to be investigated further.
Keywords: fluid mud, soft mud, cohesive sediments, cone penetration testing (CPT), pore pressure, gas, in situ measurement, rheology, shear thinning, yield stress, Ems, harbour of Emden, Baltic Sea
Issue Date: 12-Jan-2011
Type: Dissertation
URN: urn:nbn:de:gbv:46-00101875-18
Institution: Universität Bremen 
Faculty: FB5 Geowissenschaften 
Appears in Collections:Dissertationen

  

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