| Cruise Info. | |
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| Ship name | Seeker |
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| Cruise identifier | 2/90 |
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| Cruise period | 1990-10-29 — 1990-11-03 |
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| Status | Completed |
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| Port of departure | Boston, United Kingdom |
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| Port of return | Boston, United Kingdom |
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| Purpose | Research |
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| Objectives | To collect sediment and water samples as part of the JONUS programme to identify and quantify the fate of river bourne nutrients entering the Wash estuaries |
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| Chief scientist | Stephen James Malcolm (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory) |
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| Cruise report | (0.88 MB) |
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| Ocean/sea areas | |
| General | North Sea |
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| Specific | Wash Estuary |
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| Measurements | |
| Physical oceanography | |
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| Subsurface temperature and salinity measurements | Quantity: number of samples = 1 Description: Water samples were taken from the Wisbech Channel. |
| Subsurface temperature and salinity measurements | Quantity: number of samples = 3 Description: At Inner Westmark Knock the ATVs were deployed onto the sandbanks and samples for denitrification assay, sediment flux measurement and interstitial water were collected. |
| Subsurface temperature and salinity measurements | Quantity: number of samples = 1 Description: The abandoned ATV was recovered and sediment samples were collected. |
| Subsurface temperature and salinity measurements | Quantity: number of samples = 1 Description: Interstitial water samples were collected at WSP6, in doing so one ATV had to be abandoned. |
| Subsurface temperature and salinity measurements | Quantity: number of samples = 3 Description: At Freiston Low all terrain vehicles were deployed to collect samples for denitrification assay, sediment flux measurement and interstitial water. |
| Subsurface temperature and salinity measurements | Quantity: number of samples = 1 Description: Water samples were collected in the Witham. |
| Biology and fisheries | |
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| Sediment traps | Quantity: number of samples = 3 Description: At Inner Westmark Knock the ATVs were deployed onto the sandbanks and samples for denitrification assay, sediment flux measurement and interstitial water were collected. |
| Sediment traps | Quantity: number of samples = 1 Description: The abandoned ATV was recovered and sediment samples were collected. |
| Sediment traps | Quantity: number of samples = 3 Description: At Freiston Low all terrain vehicles were deployed to collect samples for denitrification assay, sediment flux measurement and interstitial water. |