The sound speed anomaly of Baltic seawater

von Rohden, C.; Weinreben, S.; Fehres, F.

doi:10.5194/os-12-275-2016

Articles | Volume 12, issue 1

https://doi.org/10.5194/os-12-275-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/os-12-275-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 12, issue 1

Research article

|

18 Feb 2016

Research article |

| 18 Feb 2016

The sound speed anomaly of Baltic seawater

C. von Rohden, S. Weinreben, and F. Fehres

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Jan 2025	6	14	0	20
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Apr 2025	13	10	0	23
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Jun 2025	33	15	1	49
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Nov 2025	34	19	2	55
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Cumulative views and downloads (calculated since 02 Nov 2015)

Month	HTML	PDF	XML	Total
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Apr 2025	13	10	0	23
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Jun 2025	33	15	1	49
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Sep 2025	21	11	4	36
Oct 2025	22	23	3	48
Nov 2025	34	19	2	55
Dec 2025	29	39	3	71
Jan 2026	31	17	7	55
Feb 2026	12	14	1	27

Latest update: 16 Feb 2026

Short summary

The variability of the relative salt composition in seawater may have significant influence on physical properties. Based on off-shore and laboratory measurements, this effect is quantified for the first time for speed of sound in Baltic seawater. Time-of-flight sensors with sufficient resolution were applied to resolve the small sound speed anomaly to values in the range of several cm s⁻¹. The results suggest that the effect can be reasonably predicted by the recent equation of state (TEOS-10).