Articles | Volume 22, issue 5
https://doi.org/10.5194/os-22-3369-2026
https://doi.org/10.5194/os-22-3369-2026
Research article
 | 
22 Oct 2026
Research article |  | 22 Oct 2026

Hydrographic transformation of the Persian/Arabian Gulf outflow over rough shelf bathymetry in the Gulf of Oman

Ahmed Abdelmaksoud, Aisha H. Al-Suwaidi, Gerd Bruss, Kaveh Samimi-Namin, and Mohammed Y. Ali

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Cited articles

Abdelmaksoud, A., Ali, M., and Al-Suwaidi, A.: Formation Mechanism of Seafloor Gas Seeps and Pockmarks at Active Continental Margins: Insights from the Gulf of Oman, Zenodo [data set], https://doi.org/10.5281/zenodo.17160219, 2025a. 
Abdelmaksoud, A., Al-Suwaidi, A., Ali, M., Shah, A., Almehairbi, S. S., Al Ali, L. M., and Ali, M. Y.: Evidence of pockmarks and seafloor gas venting in the northwestern Arabian Sea, Commun. Earth Environ., 6, 41, https://doi.org/10.1038/s43247-025-02009-6, 2025b. 
Abdelmaksoud, A., Al-Suwaidi, A., and Ali, M.: CTD profiles at the mouth of the Gulf of Oman (acquired July 2025), Zenodo [data set], https://doi.org/10.5281/zenodo.19200743, 2026. 
Alford, M. H., Girton, J. B., Voet, G., Carter, G. S., Mickett, J. B., and Klymak, J. M.: Turbulent mixing and hydraulic control of abyssal water in the Samoan Passage, Geophys. Res. Lett., 40, 4668–4674, https://doi.org/10.1002/grl.50684, 2013. 
Biscaye, P. E. and Eittreim, S. L.: Suspended particulate loads and transports in the nepheloid layer of the abyssal Atlantic Ocean, Mar. Geol., 23, 155–172, https://doi.org/10.1016/0025-3227(77)90087-1, 1977. 
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Short summary
The Persian/Arabian Gulf exports a dense, salty, oxygen-rich current that helps ventilate the Arabian Sea. Measurements along the northern margin of the Gulf of Oman show that the flow remains thin and attached over smooth seafloor, but thickens, mixes, and detaches after a bathymetric step over rough terrain of the shelf. These changes affect oxygen delivery and benthic life, and also suggest that climate-driven density shifts may alter their pathways and impacts.
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