Voruntersuchungen für geplante Langzeitbeobachtungen des Drucks am Meeresboden: Sensoranalyse, Datenanalyse und Planung des Messprinzips
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Other Titles: | Preliminary investigation for observation of ocean bottom pressure: Sensor analysis, Signal analysis and development of a measuring method | Authors: | Polster, André | Supervisor: | Villinger, Heinrich | 1. Expert: | Villinger, Heinrich | Experts: | Kopf, Achim | 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. |
Keywords: | ocean bottom pressure; Paroscientific sensor; long-term sensor drift; effective resulution; tidal reduction; signal analysis; vertical movements of the seafloor; differential pressure sensor | Issue Date: | 24-Feb-2011 | Type: | Dissertation | Secondary publication: | no | URN: | urn:nbn:de:gbv:46-00101977-15 | Institution: | Universität Bremen | Faculty: | Fachbereich 05: Geowissenschaften (FB 05) |
Appears in Collections: | Dissertationen |
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