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You are here : eLibrary : Ice Research and Engineering : 22nd Symposium_Singapore (2014) : THEME 1- CLIMATE CHANGE IMPACTS ON THE CRYOSPHERE : PHYSICAL, CHEMICAL AND OPTICAL PROPERTIES OF ESTUARIES IN THE GULF OF FINLAND, RIVER KYMIJOKI
PHYSICAL, CHEMICAL AND OPTICAL PROPERTIES OF ESTUARIES IN THE GULF OF FINLAND, RIVER KYMIJOKI
Author : Ioanna Merkouriadi and Matti Lepp?ranta
The purpose of this project was to examine the physical, chemical and optical properties of the
estuaries in the Gulf of Finland and to estimate the influence of the seasonal Sea ice processes. One year of
successive measurements (2011) took place in River Kymijoki estuaries, Gulf of Finland. The
expeditions occurred during the ice break up season in 2011, and before the initial ice formation
of the winter 2011-2012. Temperature, salinity, oxygen, pH and Photosynthetically Active
Radiation (PAR) data were collected by the CTD90M multiparameter probe. In addition, open
access data records from OIVA - Ymp?rist?- ja paikkatietopalvelu asiantuntijoille
(Environmental and Location-based Expert Services) were analyzed for seasonal variations.
Here, we present some preliminary analysis of the properties in order to examine their seasonal
variations in four years 2010-2013. The strongest thermocline occurred in August at 10 m depth.
Salinity in the summer was on average higher by 1-1.5. Minimum pH values occurred in the
winter, just below the landfast ice cover. Dissolved oxygen in the summer was lower by 5.5 mg/l
compared to the winter average. The PAR values decayed exponentially down to 2m and got
almost zero below 10 m depth.
File Size : 330,025 bytes
File Type : Adobe Acrobat Document
Chapter : Ice Research and Engineering
Category : 22nd Symposium_Singapore (2014)
Article : THEME 1- CLIMATE CHANGE IMPACTS ON THE CRYOSPHERE
Date Published : 13/07/2016
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