Optical properties of the Black Sea waters near oceanographic platform during coccolithophore blooms in 2012 and 2017  id статьи: 662
Тип публикации
статья в журнале
Язык
Ru
Журнал
Fundamentalnaya i Prikladnaya Gidrofizika

ISSN:2073-6673
Год
2020
Выходные данные
том 13
выпуск 2
страницы 25-34
Абстракт
The paper shows the results of optical measurements carried out during the coccolithophore bloom and the primary bio-optical characteristics obtained. Blooming coccolithophores produce a significant amount of mineral suspension, increasing light scattering and reducing the transparency of water. An increase in the backward scattering leads to an increase in the upwelling radiance and the reflectance coefficient of the sea water. Field measurements were carried out on an oceanographic platform located 600 meters from the coastline in July 2012 and May 2017. The measured parameters included light beam attenuation coefficient, sea reflectance, and the Secchi disk depth, satellite data from MODIS scanners Leves 2 and 3 were also used. The measured beam attenuation coefficient was twice higher than in the absence of the bloom, the reflectance was three times higher. Measured values show similar temporal variability. The calculations of the primary bio-optical characteristics were carried out using semi-analytical algorithms. The coccolith concentration was estimated in various ways; the results and their temporal variability are in good agreement. The calculated backscattering is an order of magnitude higher compared to the absence of the bloom, while the GIOP model somewhat underestimates the calculated values. The combined use of satellite and contact data makes it possible to restore both total scattering and backscattering. The asymmetry coefficient of the scattering and the backscattering ratio show an increase in the fraction of small particles with a high refractive index.
Ключевые слова
OPTICAL MEASUREMENTS, LIGHT BEAM ATTENUATION COEFFICIENT, SEA REFLECTANCE, SECCHI DISK, SUSPENDED MATTER, CHLOROPHYLL, COCCOLITHOPHORE, COCCOLITHS
Дата занесения
2020-08-04 15:00:53
Scopus
Статус есть
Квартиль Q3
WoS
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Квартиль --
РИНЦ
Статус есть
Импакт-фактор --
количество баллов за публикацию
3
количество баллов каждому автору
1.5
Финансирование:
0827-2019-0002
Развитие методов оперативной океанологии на основе междисциплинарных исследований процессов формирования и эволюции морской среды и математического моделирования с привлечением данных дистанционных и контактных измерений
0827-2019-0004
Комплексные междисциплинарные исследования океанологических процессов, определяющих функционирование и эволюцию экосистем прибрежных зон Черного и Азовского морей