Details of MEPA Coastal Water Survey - Nutrients in Water Column 2012/13


Dataset identification

Title of datasetMEPA Coastal Water Survey - Nutrients in Water Column 2012/13
Narrative summary of datasetThe survey was conducted at 26 stations in the coastal waters of the Maltese Islands over a period of one year between May 2012 and July 2013. Sea water samples were collected at 5 metres using a Niskin bottle. Nitrites, nitrates and Total Nitrogen were calculated on site using a probe and photometer, since these have a short holding time. They were then verified in the laboratory, where the other parameters were also measured, using the following methods: UNI EN ISO 10304-1:2009 (for Nitrites. Nitrates and Phosphates), APAT CNR IRSA 4060 Man 29 2003 (for Total Nitrogen), APAT CNR IRSA 4030B Man 29 2003 (for Ammonium Ions) and EPA 2007 1994 (for Total Phosphorous as P).
Summary of processing methodologyThe data was available in the form of a report in PDF format. This was digitized and validated using standard procedures. The metadata was then converted to an XML object and the data to ODV format.
Supporting documentationXML files, original report
Project/programmeMonitoring programme for coastal waters
Start date2012-05-30
End date2013-07-24
Frequency of observationsmonth to sub-year

Responsible organisations

Organisation nameEnvironment and Resources Authority
Role of organisationOriginator of Dataset
Organisation nameOceanography Malta Research Group, Department of Geosciences, University of Malta
Role of organisationDataset Holding Organisation

Dataset availability

Original dataset download link
Date of original dataset publication2018-12-20
Dataset formatOcean Data View
Public accessNo limitations
License for usePDDL
Link to dataset after processing by data centre{2DEA7723-F48D-4AD0-9678-C5CC4C31AC9B}{2DEA7723-F48D-4AD0-9678-C5CC4C31AC9B}


Latitude north boundary36.09
Longitude east boundary14.58
Latitude south boundary35.8
Longitude west boundary14.17
Coordinate reference systemWorld Geodetic System 84
Sea areaStrait of Sicily
Vertical extent minimum5 Metres
Vertical extent maximum5 Metres
Vertical extent unit10 Metres

Data types, collection and processing

Observation typeNutrients
Other inorganic chemical measurements
ParameterAlkalinity, acidity and pH of the water column
Ammonium and ammonia concentration parameters in water bodies
Nitrate concentration parameters in the water column
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Dissolved total and organic nitrogen concentrations in the water column
Dissolved total or organic phosphorus concentration in the water column
Instrument typepH sensors
high performance liquid chromatographs
inductively-coupled plasma atomic emission spectroscopes
Platform typeself-propelled boat
Data quality processing informationMEPA Coastal Water Survey data collected by the Environment Resources Authority (ex Malta Environment and Planning Authority) are managed by the University of Malta following the SeaDataNet data management standards concerning gathering, processing, quality controlling, metadata preparation.

Process information

Submitting organisationOceanography Malta Research Group, Department of Geosciences, University of Malta
Submission identifier (UUID)f0fbc91b-dc2d-4b3d-aa11-ff1eed459e21
Date of dataset creation2018-12-18
Date of dataset revision2018-12-19
Date of metadata creation2018-12-18
Date of metadata latest revision2018-12-19
Date of publishing2018-12-20
Date of processed dataset publication2019-01-10
Processing data centreOceanography Malta Research Group, Department of Geosciences, University of Malta
Summary record-ID231