Data

Measurements of water circulation in mangrove swamps in Zanzibar

Name: Measurements of water circulation in mangrove swamps in Zanzibar
Published: 2026

Australian Institute of Marine Science

Australian Institute of Marine Science (AIMS)

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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://apps.aims.gov.au/metadata/view/ffadde72-349d-4986-8775-bcb3b3f274f3&rft.title=Measurements of water circulation in mangrove swamps in Zanzibar&rft.identifier=https://apps.aims.gov.au/metadata/view/ffadde72-349d-4986-8775-bcb3b3f274f3&rft.publisher=Australian Institute of Marine Science (AIMS)&rft.description=Field investigations of water circulation and flushing in Chwaka Bay, Zanzibar were carried out as part of a UNESCO/COMARAF training workshop on mangrove ecosystems and estuarine processes, held June 5-16 1989. Three sites M1 (tide pole site in the centre of Chwaka Bay), M2 (at the entrance to the mangrove creek) and X1 (in the mangrove creek)An echo-sounder measured depth along east-west transects in the bay and in the mangrove creek on the south-western side. Measurements were taken (using a mud probe) of longitudinal distribution of temperature, salinity and turbidity. A current meter which sampled at 5 min intervals was deployed for a day at sites M1 and M2. Tidal height was recorded 15 min intervals at M1 while surface temperature, salinity, dissolved oxygen concentration and nutrient concentrations were simultaneously recorded at M2.For use in the two-dimensional model, the Bay was divided into 32 cells adapted to the local bathymentry (depth measurements). To train workshop participants in aspects of field techniques to investigate water circulation and flushing, and in data analysis. For training purposes, the model was also applied to Tudor Creek, Mombasa, Kenya (but no field data are available for this).Maintenance and Update Frequency: notPlanned&rft.creator=Australian Institute of Marine Science (AIMS) &rft.date=2026&rft.coverage=westlimit=39.36667; southlimit=-6.25; eastlimit=39.56667; northlimit=-6.05&rft.coverage=westlimit=39.36667; southlimit=-6.25; eastlimit=39.56667; northlimit=-6.05&rft_rights=Creative Commons Attribution-NonCommercial 3.0 Australia License http://creativecommons.org/licenses/by-nc/3.0/au/&rft_rights=Use Limitation: All AIMS data, products and services are provided as is and AIMS does not warrant their fitness for a particular purpose or non-infringement. While AIMS has made every reasonable effort to ensure high quality of the data, products and services, to the extent permitted by law the data, products and services are provided without any warranties of any kind, either expressed or implied, including without limitation any implied warranties of title, merchantability, and fitness for a particular purpose or non-infringement. AIMS make no representation or warranty that the data, products and services are accurate, complete, reliable or current. To the extent permitted by law, AIMS exclude all liability to any person arising directly or indirectly from the use of the data, products and services.&rft_rights=Attribution: Format for citation of metadata sourced from Australian Institute of Marine Science (AIMS) in a list of reference is as follows: Australian Institute of Marine Science (AIMS). (2009). Measurements of water circulation in mangrove swamps in Zanzibar. https://apps.aims.gov.au/metadata/view/ffadde72-349d-4986-8775-bcb3b3f274f3, accessed[date-of-access].&rft_rights=Resource Usage:Use of the AIMS data is for not-for-profit applications only. All other users shall seek permission for use by contacting AIMS. Acknowledgements as prescribed must be clearly set out in the user's formal communications or publications.&rft_subject=oceans&rft.type=dataset&rft.language=English Access the data

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Creative Commons Attribution-NonCommercial 3.0 Australia License
http://creativecommons.org/licenses/by-nc/3.0/au/

Use Limitation: All AIMS data, products and services are provided "as is" and AIMS does not warrant their fitness for a particular purpose or non-infringement. While AIMS has made every reasonable effort to ensure high quality of the data, products and services, to the extent permitted by law the data, products and services are provided without any warranties of any kind, either expressed or implied, including without limitation any implied warranties of title, merchantability, and fitness for a particular purpose or non-infringement. AIMS make no representation or warranty that the data, products and services are accurate, complete, reliable or current. To the extent permitted by law, AIMS exclude all liability to any person arising directly or indirectly from the use of the data, products and services.

Attribution: Format for citation of metadata sourced from Australian Institute of Marine Science (AIMS) in a list of reference is as follows: "Australian Institute of Marine Science (AIMS). (2009). Measurements of water circulation in mangrove swamps in Zanzibar. https://apps.aims.gov.au/metadata/view/ffadde72-349d-4986-8775-bcb3b3f274f3, accessed[date-of-access]".

Resource Usage:Use of the AIMS data is for not-for-profit applications only. All other users shall seek permission for use by contacting AIMS. Acknowledgements as prescribed must be clearly set out in the user's formal communications or publications.

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Field investigations of water circulation and flushing in Chwaka Bay, Zanzibar were carried out as part of a UNESCO/COMARAF training workshop on mangrove ecosystems and estuarine processes, held June 5-16 1989. Three sites M1 (tide pole site in the centre of Chwaka Bay), M2 (at the entrance to the mangrove creek) and X1 (in the mangrove creek)An echo-sounder measured depth along east-west transects in the bay and in the mangrove creek on the south-western side. Measurements were taken (using a mud probe) of longitudinal distribution of temperature, salinity and turbidity. A current meter which sampled at 5 min intervals was deployed for a day at sites M1 and M2. Tidal height was recorded 15 min intervals at M1 while surface temperature, salinity, dissolved oxygen concentration and nutrient concentrations were simultaneously recorded at M2.For use in the two-dimensional model, the Bay was divided into 32 cells adapted to the local bathymentry (depth measurements).
To train workshop participants in aspects of field techniques to investigate water circulation and flushing, and in data analysis.
For training purposes, the model was also applied to Tudor Creek, Mombasa, Kenya (but no field data are available for this).

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Maintenance and Update Frequency: notPlanned

Notes

Credit
Wolanski, Eric J, Dr (Principal Investigator)

Modified: 18 09 2026

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text: westlimit=39.36667; southlimit=-6.25; eastlimit=39.56667; northlimit=-6.05

Subjects

oceans |

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Other Information

Measurements and modelling of the water circulation in mangrove swamps: Wolanski EJ (1989) Measurements and modelling of the water circulation in mangrove swamps. Serie Documentaire No.3. United Nations Development Programme, UNESCO and. 43 p.

local : articleId=3407

Identifiers

global : ffadde72-349d-4986-8775-bcb3b3f274f3