High-rate local sea level monitoring with a GNSS-based tide gauge
Conference contribution, 2010

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.

GNSS

reflected signals

local sea level

tide gauge

Author

Johan Löfgren

Chalmers, Earth and Space Sciences, Space Geodesy and Geodynamics

Rüdiger Haas

Chalmers, Earth and Space Sciences, Space Geodesy and Geodynamics

Jan Johansson

Chalmers, Earth and Space Sciences, Space Geodesy and Geodynamics

Proceedings of the 2010 IEEE International Geoscience and Remote Sensing Symposium, Proceedings DVD-ROM

3616-3619

Driving Forces

Sustainable development

Subject Categories

Other Engineering and Technologies

Other Engineering and Technologies not elsewhere specified

Other Earth and Related Environmental Sciences

Earth and Related Environmental Sciences

Oceanography, Hydrology, Water Resources

Roots

Basic sciences

ISBN

978-1-4244-9566-5

More information

Created

10/7/2017