Research output: Contribution to journal › Article › peer-review
The small eddies in the White Sea and their influence on chlorophyll distribution in the Onega Bay. / Atadzhanova, O. A.; Zimin, A. V.
In: Sovremennye Problemy Distantsionnogo Zondirovaniya Zemli iz Kosmosa, Vol. 13, No. 6, 01.01.2016, p. 110-118.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - The small eddies in the White Sea and their influence on chlorophyll distribution in the Onega Bay
AU - Atadzhanova, O. A.
AU - Zimin, A. V.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Based on the diverse data, this study illustrates the occurrence of small (submesoscale) eddy structures in the Onega Bay of the White Sea and assesses their impact on the distribution of chlorophyll. The data included the results of processing of synthetic aperture radar (SAR) images from 2009 to 2012, satellite optic images in 2010 and 2015, and contact measurements on the local oceanographic polygons from 2006 to 2015. Quasi-operational remote sensing experiment in 2015 was based on comparing with close time data of satellite optical sensors and contact measurements. By all data, eddy structures about 2 km in size were most often detected, and this size is close to the climatic estimate of the internal deformation radius in the Onega Bay. Some of these submesoscale structures were manifested in the surface layer about 15 m thickness during 3-4 hours. Areas of increased occurrence of eddies on SAR images were characterized by anomalies of chlorophyll distribution and by presence of spots of cold or warm water. It is found that eddies of large size (> 8 km) almost always occurred simultaneously in different satellite data. This finding was not correct for smaller vortices (< 2 km), and the contact experiment including measurements of chlorophyll confrmed this result.
AB - Based on the diverse data, this study illustrates the occurrence of small (submesoscale) eddy structures in the Onega Bay of the White Sea and assesses their impact on the distribution of chlorophyll. The data included the results of processing of synthetic aperture radar (SAR) images from 2009 to 2012, satellite optic images in 2010 and 2015, and contact measurements on the local oceanographic polygons from 2006 to 2015. Quasi-operational remote sensing experiment in 2015 was based on comparing with close time data of satellite optical sensors and contact measurements. By all data, eddy structures about 2 km in size were most often detected, and this size is close to the climatic estimate of the internal deformation radius in the Onega Bay. Some of these submesoscale structures were manifested in the surface layer about 15 m thickness during 3-4 hours. Areas of increased occurrence of eddies on SAR images were characterized by anomalies of chlorophyll distribution and by presence of spots of cold or warm water. It is found that eddies of large size (> 8 km) almost always occurred simultaneously in different satellite data. This finding was not correct for smaller vortices (< 2 km), and the contact experiment including measurements of chlorophyll confrmed this result.
KW - Chlorophyll concentration
KW - Satellite and in-situ observations
KW - Submesoscale eddies
KW - White Sea
UR - http://www.scopus.com/inward/record.url?scp=85010976089&partnerID=8YFLogxK
U2 - 10.21046/2070-7401-2016-13-6-110-118
DO - 10.21046/2070-7401-2016-13-6-110-118
M3 - Article
AN - SCOPUS:85010976089
VL - 13
SP - 110
EP - 118
JO - СОВРЕМЕННЫЕ ПРОБЛЕМЫ ДИСТАНЦИОННОГО ЗОНДИРОВАНИЯ ЗЕМЛИ ИЗ КОСМОСА
JF - СОВРЕМЕННЫЕ ПРОБЛЕМЫ ДИСТАНЦИОННОГО ЗОНДИРОВАНИЯ ЗЕМЛИ ИЗ КОСМОСА
SN - 2070-7401
IS - 6
ER -
ID: 37008039