Capturing secchi disk depth by using sentinel-2 msi imagery in Jiaozhou Bay, China from 2017 to 2021

Yang, Lei, Yu, Dingfeng, Yao, Huiping, Gao, Hao, Zhou, Yan, Gai, Yingying, Liu, Xiaoyan, Zhou, Maosheng and Pan, Shunqi ORCID: https://orcid.org/0000-0001-8252-5991 2022. Capturing secchi disk depth by using sentinel-2 msi imagery in Jiaozhou Bay, China from 2017 to 2021. Marine Pollution Bulletin 185 (A) , 114304. 10.1016/j.marpolbul.2022.114304

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Abstract

Water clarity is a key parameter for assessing changes of aquatic environment. Coastal waters are complex and variable, remote sensing of water clarity for it is often limited by low spatial resolution. The Sentinel-2 Multi-Spectral Instrument (MSI) imagery with a resolution of up to 10 m are employed to solve the problem from 2017 to 2021. Distribution and characteristics of Secchi disk depth (SDD) in Jiaozhou Bay (JZB) are analyzed. Subtle changes in localized small areas are discovered, and main factors affecting the changes are explored. Among natural factors, precipitation and wind play dominant roles in variation in SDD. Human activities have a significant influence on transparency, among which fishery farming has the greatest impact. This is clearly evidenced by the significant improvement of SDD in JZB due to the sharp decrease in human activities caused by coronavirus disease 2019 (COVID-19).

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Advanced Research Computing @ Cardiff (ARCCA) Engineering
Publisher:	Elsevier
ISSN:	0025-326X
Date of First Compliant Deposit:	5 January 2023
Date of Acceptance:	22 October 2022
Last Modified:	01 Aug 2024 13:03
URI:	https://orca.cardiff.ac.uk/id/eprint/155336

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