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Volume 7
Issue 3
10.3390/earth7030100
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Retraction of Earth 2025, 6(4), 137.
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Retraction

RETRACTED: Sarker, M.M.H.; Bipa, N.J. Spectral Analysis of Ocean Variability at Helgoland Roads, North Sea: A Time Series Study. Earth 2025, 6, 137

by
Md Monzer Hossain Sarker
1,2,* and
Nusrat Jahan Bipa
3,4
1
Faculty of Spatial Sciences, University of Groningen, 9747 AD Groningen, The Netherlands
2
Department of Environmental Science and Disaster Management, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
3
Sustainable Development and Climate Change, University School for Advanced Studies IUSS, 27100 Pavia, Italy
4
Faculty of Engineering, Free University of Bozen-Bolzano, Universitätsplatz 5, 39100 Bolzano, Italy
*
Author to whom correspondence should be addressed.
Earth 2026, 7(3), 100; https://doi.org/10.3390/earth7030100
Submission received: 6 May 2026 / Accepted: 2 June 2026 / Published: 11 June 2026
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The journal retracts the article titled “Spectral Analysis of Ocean Variability at Helgoland Roads, North Sea: A Time Series Study” [...]

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MDPI and ACS Style

Sarker, M.M.H.; Bipa, N.J. RETRACTED: Sarker, M.M.H.; Bipa, N.J. Spectral Analysis of Ocean Variability at Helgoland Roads, North Sea: A Time Series Study. Earth 2025, 6, 137. Earth 2026, 7, 100. https://doi.org/10.3390/earth7030100

AMA Style

Sarker MMH, Bipa NJ. RETRACTED: Sarker, M.M.H.; Bipa, N.J. Spectral Analysis of Ocean Variability at Helgoland Roads, North Sea: A Time Series Study. Earth 2025, 6, 137. Earth. 2026; 7(3):100. https://doi.org/10.3390/earth7030100

Chicago/Turabian Style

Sarker, Md Monzer Hossain, and Nusrat Jahan Bipa. 2026. "RETRACTED: Sarker, M.M.H.; Bipa, N.J. Spectral Analysis of Ocean Variability at Helgoland Roads, North Sea: A Time Series Study. Earth 2025, 6, 137" Earth 7, no. 3: 100. https://doi.org/10.3390/earth7030100

APA Style

Sarker, M. M. H., & Bipa, N. J. (2026). RETRACTED: Sarker, M.M.H.; Bipa, N.J. Spectral Analysis of Ocean Variability at Helgoland Roads, North Sea: A Time Series Study. Earth 2025, 6, 137. Earth, 7(3), 100. https://doi.org/10.3390/earth7030100

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