European Directory of Marine Environmental Data (EDMED)

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Data set name

Chemical variability (temperature, salinity, dissolved oxygen, pH, suspended solids) in the Tamar estuary (July 1976 - March 1978)

Data holding centrePlymouth Marine Laboratory
CountryUnited Kingdom  United Kingdom
Time periodFrom July 1976 to March 1978
Geographical area

Tamar Estuary, Plymouth, south west England


Alkalinity, acidity and pH of the water column; Chlorophyll pigment concentrations in water bodies; Dissolved oxygen parameters in the water column; Optical backscatter; Salinity of the water column; Temperature of the water column; Concentration of suspended particulate material in the water column


Fluorometers; optical backscatter sensors; discrete water samplers; particulates samplers; salinity sensor; dissolved gas sensors; electron microprobes


Investigations were carried out at approximately monthly intervals, but were occasionally repeated on consecutive days. Twenty-four days of field investigations were completed between July 1976 and March 1978, during which more than 70 profiles of chemical characteristics were recorded. A traverse of the entire estuarine mixing region took approximately 3 hours although at times shorter segments were investigated. All investigations in the field were carried out using a 12m length flat bottomed Rotork Seatruck. Water was pumped from a depth of 0.5m using a submersible (Flygt B2040) centrifugal pump through a constant levelled reservoir which held the detecting sensors. The following environmental data were recorded continuously during the traverses: temperature, salinity, chloride ion, pH, dissolved oxygen, turbidity and chlorophyll fluorescence.

OriginatorsPlymouth Marine Laboratory

Morris, A.W., Bale, A.J. and Howland, R.J.M. (1982) Chemical variability in the Tamar estuary, south-west England., Estuarine, Coastal and Shelf Science, Vol 14(6): 649-661.

OrganisationPlymouth Marine Laboratory
AvailabilityBy negotiation
ContactThe Director

Plymouth Marine Laboratory
Prospect Place The Hoe
United Kingdom

Telephone+44 1752 633100
Facsimile+44 (0)1752 633101
Collating centreBritish Oceanographic Data Centre
Local identifier1053030
Global identifier711
Last revised2009-12-01