The hydrographic research during NABOS 2013 expedition Sergey Kirillov Andrey Pniushkov Ilona...
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![Page 1: The hydrographic research during NABOS 2013 expedition Sergey Kirillov Andrey Pniushkov Ilona Goszczko Ekaterina Bloshkina John Guthrie and Igor Ashik.](https://reader035.fdocuments.in/reader035/viewer/2022062309/56649f045503460f94c17e53/html5/thumbnails/1.jpg)
The hydrographic research during NABOS 2013 expedition
Sergey KirillovAndrey PniushkovIlona Goszczko
Ekaterina BloshkinaJohn Guthrie
andIgor Ashik + Vladimir Ivanov
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Water sampling with Rosette carrousel L-ADCP
L-ADCP
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CTD with auxiliary sensors
SBE9plus supplies Conductivity, Temperature and Depth measurements with the rate of 24 Hz. In terms of vertical resolution of profile it gives about 4 cm depth intervals.
Additional auxiliary sensors:- oxygen- fluorescence- turbidity- transparency- nitrate- altimeter
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Expendable Probes
eXpendable CTD Profiler (XCTD)
eXpendable BathyThermograph (XBT)
31 XBT and 18 XCTD were launched
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2008
2009
St.Anna Trough
St.Anna Trougth is one of the key Arctic “hot spots” where cocktail of different water masses is blended
Aksenov et al. 2011
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RV “Professor Molchanov”, July 11-12, 2013
RV “Akademik Fedorov”, September 18-19, 2013St.Anna Trough
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Atlantic Waters form a specific vertical stratification with temperature maximum below the polar mixed layer
The typical vertical structure within the Arctic Ocean deep
basin interior
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81N 90E 95E 105E 110E 126E 142E
Modification of FSBW and BSBW along the Eurasian continental slope
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The lateral mixing induced by double-diffusive processes in the frontal areas
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The changes in AWs from 1970s to 2000s
AW core temperatures AW upper boundary depth
2000s AW core temperature anomalies
1970s
2000s
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The changes in AWs at 126E cross-slope transect
The recent thermal state of AWs at 126E is still above an average (the core temperature anomalies are about +0.6) but warming has been ceased since ~2006
vs 1950-1993 vs 2006-2009
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The station lists are available in .pdf format
…thank to Anna and Nastia
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Thank you for your attention