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| Format: | Recurso digital |
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Zenodo
2025
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| Online Access: | https://doi.org/10.5281/zenodo.17940002 |
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Table of Contents:
- <p>In this deliverable, we present the first version of a series of historical moored time series that have been deployed over the past 50 years over Antarctic continental shelves and slopes and provide an overview ofthe energetic characteristics of ocean circulation on and off the continental shelves. The first standardised data collection of moored hydrography and current velocities records we present is restricted to the region south of 60°S and is freely accessible from SEANOE (https://www.seanoe.org/data/00887/99922/), and we hope to complement it with additional records and maintain in the future. We refer to this data compilation as the OCEAN ICE mooring compilation herein. This dataset provides an opportunity for a systematic study on the pan-Antarctic water mass transport and shelf connectivity, a task made challenging by the typically multi-source and multiformat nature of these records.<br>Perhaps unsurprisingly, spectral analysis of the compiled current velocity timeseries demonstrates the dominating presence of tidal variability within most records. This component of the variability is fitted using multi-linear regression to tidal frequencies, and the tidal fit is removed from the original timeseries to leave tide-filtered variability. Keeping in mind that records are limited to months to years in duration, the latter is predominantly composed of synoptic (3-10 days period), intraseasonal (10-80 days) and seasonal (~6 months-1 year) variability. The spatial distribution of the kinetic energy integrated within each frequency band (tidal and non-tidal) is presented and discussed.</p>