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Seifert, Annedore; Kopf, Achim J (2012): (Figure 2) Suspended sediment concentration profiles from samples in the outer harbor of Emden, Germany. PANGAEA,, Supplement to: Seifert, A; Kopf, AJ (2012): Modified dynamic CPTU penetrometer for fluid mud detection. Journal of Geotechnical and Geoenvironmental Engineering, 138(2), 203-206,

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One particularly complex phenomenon is the episodic, tidally driven variation of navigable depth level as a result of fluid mud settlement. This paper presents results from dynamic cone penetration testing with pore pressure measurement (CPTU) as a nonacoustical, direct device to support surveying and management of these areas. The new technique is modular and uses a disk configuration for fluid mud detection. Both disk resistance and pore pressure measurements accurately identify suspended matter concentrations of 90 g/L or more, and the transition from fluid mud to consolidating mud once concentrations exceed 150 g/L. Hence, the procedure attests the potential for rapid, reliable assessment of a fluid mud layer and concurrent characterization of the underlying consolidated sediment by monitoring the pore pressure and strength changes during penetration.
Latitude: 53.340000 * Longitude: 7.184400
Date/Time Start: 2008-04-01T00:00:00 * Date/Time End: 2008-04-01T00:00:00
Emden_Harbour_GC * Latitude: 53.340000 * Longitude: 7.184400 * Date/Time: 2008-04-01T00:00:00 * Recovery: 2 m * Location: Emden Harbour, Germany * Method/Device: Gravity corer (GC)
Emden_Harbour_WS1250 (WS1250) * Latitude: 53.340000 * Longitude: 7.184400 * Date/Time: 2008-04-01T00:00:00 * Location: Emden Harbour, Germany * Method/Device: Water sample (WS)
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