scholarly journals Den menneskeskapte iskanten – Om vitenskapelig sannhetssøken og uavhengighet i en kunnskapsbasert forvaltning

2019 ◽  
pp. 131-152 ◽  
Author(s):  
Ingrid Bay-Larsen ◽  
Erlend A.T. Hermansen ◽  
Tone G. Bjørndal

In this chapter we explore how the geographical position of the marginal ice zone in the Barents Sea became the center of a hot political debate. In 2015, new data sets on the retreat of sea ice were introduced by the Norwegian government, indicating how petroleum drilling could take place without conflicting with the vulnerable ice ecosystem. In the public debate that followed, four different definitions of the ice edge zone were introduced, each providing different geographical positions of the ice edge. These multiple definitions directly corresponded to various political views on the exploration of petroleum in the Barents Sea. The analysis shows how ethical principles connected to scientific rigor and independence may be put on trial when conflicts of interests escalate in policy debates. This chapter demonstrates the mismatch between ethical ideals and practice in knowledge-based management, and discusses what their democratic implications might be.

2020 ◽  
Vol 11 (4) ◽  
pp. 44-84
Author(s):  
E.I. Druzhkova ◽  
◽  
I.V. Berchenko ◽  
A.V. Vaschenko ◽  
M.P. Venger ◽  
...  

This paper presents some research results of the plankton laboratory MMBI RAS over the past 5 years. One of the main directions was the study of the structure of zooplankton communities and an assessment of their productivity off the coast of the Kola Peninsula and in the coastal waters of the Svalbard archipelago.Analysis of the vast perennial material revealed the main features of the spatial distribution of phytoplankton in the water area of the Pechora Sea. In the ice edge zone for nano-, micro-and zooplankton, the presence of ice edge effect in different seasons of the year is shown. It has been shown that in the Barents Sea, the Polar Front is not the boundary between various pelagic phytocenoses. During the polar night, virio-, bacterio-, phyto-and zooplankton were studied. When studyingthe deep-sea Barents Sea shelf, an autochthonous community of microalgae was found, the lower distribution limit of which is 300 m isobath.


2021 ◽  
pp. 194-212
Author(s):  
S.A. Lebedev ◽  
◽  
A.G. Kostianoy ◽  
S.K. Popov ◽  
◽  
...  

Satellite altimetry data are used for investigation of the sea level variability and sea ice cover retreat in the Barents Sea in 1992−2018. The data from ERS−1/2, ENVISAT, SARAL/AltiKa, and Sentinel-3A/3B satellites were used in this study. An increasing trend of the sea level of about 2.31 mm/yr was observed in this time period, which caused a total increase in the Barents Sea level by about 6 cm. Linear trends of the sea level change varied from 1.84 mm/yr in July to 4.29 mm/yr in September. The average velocity of the ice edge retreat along the tracks in the northeastern direction is of 10.9 km/yr for the same period. It was found that the ice edge displacement rate tends to increase by 0.30 km/yr per a degree in longitude in the eastward direction. Thus, the ice edge retreat along the “eastern” tracks goes faster than along the “western” ones, which is likely explained by a change in the water dynamics in the Barents Sea.


Water ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 101
Author(s):  
Pavel R. Makarevich ◽  
Veronika V. Vodopianova ◽  
Aleksandra S. Bulavina

Effects of the sea-ice edge and the Polar Frontal Zone on the distribution of chlorophyll-a levels in the pelagic were investigated during multi-year observations in insufficiently studied and rarely navigable regions of the Barents Sea. Samples were collected at 52 sampling stations combined into 11 oceanographic transects over a Barents Sea water area north of the latitude 75° N during spring 2016, 2018, and 2019. The species composition, abundance and biomass of the phytoplankton community, chlorophyll-a concentrations, hydrological and hydrochemical parameters were analyzed. The annual phytoplankton evolution phase, defined as an early-spring one, was determined throughout the transects. The species composition of the phytoplankton community and low chlorophyll-a levels suggested no phytoplankton blooming in April 2016 and 2019. Not yet started sea-ice melting prevented sympagic (sea-ice-associated) algae from being released into the seawater. In May 2018, ice melting began in the eastern Barents Sea and elevated chlorophyll-a levels were recorded near the ice edge. Chlorophyll-a concentrations substantially differed in waters of different genesis, especially in areas influenced by the Polar Front. The Polar Front separated the more productive Arctic waters with a chlorophyll-a concentration of 1–5 mg/m3 on average from the Atlantic waters where the chlorophyll-a content was an order of magnitude lower.


Author(s):  
E I Druzhkova ◽  
T G Ishkulova ◽  
I A Pastukhov
Keyword(s):  

2019 ◽  
Vol 25 ◽  
pp. 26-35
Author(s):  
Sergey A. Lebedev ◽  
Andrey G. Kostianoy ◽  
Sergey K. Popov

Satellite altimetry data are used for investigation of the sea level variability and sea ice cover retreat in the Barents Sea in 1992-2018. The data from ERS − 1/2, ENVISAT, SARAL/AltiKa, and Sentinel-3A/3B satellites were used in this study. An increasing trend of the sea level of about 2.31 mm/yr was observed in this time period, which caused a total increase in the Barents Sea level by about 6 cm. Linear trends of the sea level change varied from 1.84 mm/yr in July to 4.29 mm/yr in September. The average velocity of the ice edge retreat along the tracks in the northeastern direction is of 10.9 km/yr for the same period. It was found that the ice edge displacement rate tends to increase by 0.30 km/yr per a degree in longitude in the eastward direction. Thus, the ice edge retreat along the “eastern” tracks goes faster than along the “western” ones, which is likely explained by a change in the water dynamics in the Barents Sea.


2008 ◽  
Vol 2 (1) ◽  
pp. 18-27 ◽  
Author(s):  
Vladimir Kushnir ◽  
Vladimir Pavlov ◽  
Alexey Morozov ◽  
Olga Pavlova

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