DocumentCode :
3356745
Title :
High-rate local sea level monitoring with a GNSS-based tide gauge
Author :
Löfgren, Johan S. ; Haas, Rüdiger ; Johansson, Jan M.
Author_Institution :
Dept. of Earth & Space Sci., Chalmers Univ. of Technol., Onsala, Sweden
fYear :
2010
fDate :
25-30 July 2010
Firstpage :
3616
Lastpage :
3619
Abstract :
We present first results from the analysis of high-rate observations with a GNSS-based tide gauge at the Onsala Space Observatory. The goal is to determine local sea level with high temporal resolution. The GNSS-based tide gauge makes use of right-hand circular polarized GNSS signals that are directly received and left-hand circular polarized GNSS signals that are reflected from the sea surface. An experimental setup of the GNSS-based tide gauge was operated in the spring of 2010 and data were recorded with a sampling rate of 20 Hz. We analyzed data decimated to 1 Hz using different temporal resolution between 5 and 240 seconds, and the resulting time series of local sea level were compared to each other and to results from two stilling well gauges. The comparison with the data from the stilling well gauges shows a common trend. The comparison of the results from analyses with different temporal resolution show consistent results. There is also an indication that the GNSS-based tide gauge might be able to give information on the sea surface state.
Keywords :
oceanographic equipment; sea level; tides; AD 2010; GNSS-based tide gauge; Onsala Space Observatory; high temporal resolution; high-rate local sea level monitoring; right-hand circular polarized GNSS signals; sea surface state; stilling well gauges; temporal resolution; time series; Global Navigation Satellite Systems; Receivers; Sea level; Sea measurements; Sea surface; Tides; Time series analysis; GNSS; local sea level; reflected signals; tide gauge;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International
Conference_Location :
Honolulu, HI
ISSN :
2153-6996
Print_ISBN :
978-1-4244-9565-8
Electronic_ISBN :
2153-6996
Type :
conf
DOI :
10.1109/IGARSS.2010.5652888
Filename :
5652888
Link To Document :
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