Summer upwelling at the Boknis Eck time-series station (1982 to 2012) – a combined glider and wind data analysis
| العنوان: | Summer upwelling at the Boknis Eck time-series station (1982 to 2012) – a combined glider and wind data analysis |
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| المؤلفون: | Johannes Karstensen, Karl Bumke, Taavi Liblik, Jürgen Fischer, Gerd Krahmann |
| المصدر: | Biogeosciences, Vol 11, Iss 13, Pp 3603-3617 (2014) Biogeosciences (BG), 11 . pp. 3603-3617. |
| بيانات النشر: | Copernicus GmbH, 2014. |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | 0106 biological sciences, 010504 meteorology & atmospheric sciences, 010604 marine biology & hydrobiology, lcsh:QE1-996.5, lcsh:Life, Glider, Stratification (water), Wind direction, 01 natural sciences, Wind speed, lcsh:Geology, lcsh:QH501-531, Baltic sea, 13. Climate action, lcsh:QH540-549.5, Climatology, Environmental science, Upwelling, Submarine pipeline, lcsh:Ecology, 14. Life underwater, Ecology, Evolution, Behavior and Systematics, 0105 earth and related environmental sciences, Earth-Surface Processes |
| الوصف: | Two consecutive summer upwelling events, each lasting for less than 24 h, where surveyed in high temporal and vertical resolution at the Boknis Eck time series station (BE) in the western Belt Sea (Baltic Sea) in summer 2010 with an autonomous glider. Driven only by moderate offshore winds, both events resulted in strong cooling of surface waters (up to 5 K). Only for the second event, significant irreversible changes in the vertical stratification were observed and the appearance of low oxygen waters at the bottom indicated that the upwelling had an impact on the water column as a whole. A combination of wind and seasurface temperature data revealed that summer (June to September) upwelling at BE occurs for wind directions between 190 ° to 260 ° and with hourly averaged wind speed exceeding 4 m s−1. For the period 1982 to 2012 BE experience about 18 days of upwelling favourable wind conditions on average. Large interannual variability exist ranging from only 7.7 days in 2006 to more than 28 days in 1985. Surface (1 m depth) and deep water (below 25 m depth) anomalies of salinity and oxygen at the BE follow extended periods of strong upwelling favourable winds. Although seasurface temperature is good indicator for the existence of summer upwelling, the upwelling intensity does not correlate with the temperature anomaly. |
| وصف الملف: | text |
| تدمد: | 1726-4189 |
| DOI: | 10.5194/bg-11-3603-2014 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e21baf3b9e5935b339b4a2bb4be56a71 https://doi.org/10.5194/bg-11-3603-2014 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....e21baf3b9e5935b339b4a2bb4be56a71 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17264189 |
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| DOI: | 10.5194/bg-11-3603-2014 |