Voruntersuchungen für geplante Langzeitbeobachtungen des Drucks am Meeresboden: Sensoranalyse, Datenanalyse und Planung des Messprinzips
Date Issued
2011-02-24
Author(s)
Supervisors
Referees
Abstract
This work comprises a preliminary investigation for observation of ocean bottom pressure and derivation of linear vertical movements of the seafloor. A statistical analysis of ocean bottom pressure data after removed tidal signals has been conducted. This includes noise analysis (effective resolution of the sensor), determination of the individual long-term drift of each data set and a statistical drift analysis. Subsequently, several possible impact factors on the ocean bottom pressure have been studied, in order to facilitate signal analysis of a future ocean bottom station. Both pressure variations at the sea surface as well as activities at the seafloor have been considered. As the long-term drift has turned to be unpredictable, slow linear ocean bottom movements are removed by applying a linear drift correction and cannot be studied. Thus, a new measuring method has been developed, which uses a differential pressure sensor. The theoretical approach is presented in detail.
Subjects
ocean bottom pressure
;
Paroscientific sensor
;
long-term sensor drift
;
effective resulution
;
tidal reduction
;
signal analysis
;
vertical movements of the seafloor
;
differential pressure sensor
Institution
Type
Dissertation
Secondary publication
No
Language
German
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00101977-1.pdf
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