Gebler, Madlen (2013) Detection and analysis of oceanic motion using pressure inverted echo sounders (PIES). PhD, Universität Oldenburg.


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PIES measure ocean bottom pressure (OBP) and acoustic round trip travel time which is a vertically integrated function of density. Since 2003 the AWI operates an array of six PIES along the Good Hope line south of Africa. The first part uses the Gravest Empirical Mode method to derive SSH anomalies and baroclinic ACC transport. The correlation of the SSH anomaly with satellite altimetry results higher correlations for the gridded AVISO product compared to the along track openADB product. Calculating the baroclinic ACC transports results a mean of 147±2.4 Sv for 2007-2008 and 142±1.9 Sv respectively for 2008-2010. The second part investigates how in-situ OBP can improve a least square inversion of GPS data, GRACE data and modelled OBP used to derive global ocean mass changes. The inversion with in-situ OBP locally improves the correlation with the Bottom Pressure recorders (BPRs) but does only slightly influence global parameters like the global mean ocean mass or the geocenter motion.

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Messung und Analyse ozeanischer Signale mit Hilfe von Pressure Inverted Echo Soundern (PIES)

Item Type: Thesis (PhD)
Uncontrolled Keywords: ACC,PIES, Inversion, Transport, SSH Anomaly
Subjects: Science and mathematics > Physics
Divisions: Faculty of Mathematics and Science > Institute for Chemistry and Biology of the Marine Environment (ICBM)
Date Deposited: 12 Mar 2013 13:37
Last Modified: 15 Jul 2013 11:20
URN: urn:nbn:de:gbv:715-oops-15291

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