Detection and analysis of oceanic motion using pressure inverted echo sounders (PIES)

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.

Level thesis:degree_level

thesis.doctoral

Grantor dc:publisher

Universität Oldenburg

Year

2013

Author dc:creator

• Gebler, Madlen

Contributors dc:contributor

• Wolff, Jörg-Olaf
• Lemke, Peter

• ACC,PIES, Inversion, Transport, SSH Anomaly

Repository record source_url

http://oops.uni-oldenburg.de/1448

OAI identifier oai:identifier

oai:oops.uni-oldenburg.de:1448