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Radioactive substances Cesium-137 in fish 2018 data

This dataset represents the underlying biota data on core indicator Radioactive substances: Cesium-137 for herring and for flatfish. The core indicator evaluates the state of the environment using the concentration of the radioactive isotope cesium-137 (137Cs) in herring, in flatfish and in surface waters. Quantitative thresholds are used to evaluate if core indicators status is Achieve, Fail or Not assessed. Good status is achieved when concentrations reach levels measured before the Chernobyl accident in 1986 when the biota of the Baltic Sea received the most significant contribution to their level of artificial radionuclides, predominantly in the form of 137Cs.


This dataset displays the result of the indicator in HELCOM Assessment Scale 2 (Division of the Baltic Sea into 17 sub-basins).


Attribute information:


"KEY" = MORS Database unique sample identifier

"Year" = Year of observation

"STATION" = Name of sampling station

"NUCLIDE" = Nuclide measured

"BASINNAME" = Name of subbasin

"TISSUE_DES" = Part of fish used for the measurement

"RUBIN" = Species of measurement (CLUP HAR = herring, PLAT FLE = flatfish)

"VALUE_Bq_k" = Value of measurement in Bq/kg

"ERROR_" = error % of the measurement

Simple

Date (Publication)
2018-06-28
Unique resource identifier
https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/c1ee139e-bdf7-4e95-8b5d-e7577f7433f8
pointOfContact
  HELCOM Secretariat

GEMET - INSPIRE themes, version 1.0

  • Oceanographic geographical features

Keywords
  • MADS

  • HOLAS2 2018 Core indicator

  • Core indicator

Use constraints
Other restrictions
Other constraints

Use constraints: The data and resulting data products (tables, figures and maps) available on the indicator web pages can be used freely given that the source is cited. The indicator should be cited as following: HELCOM (2018) Radioactive substances: Cesium-137 in fish and surface water. HELCOM core indicator report. Online. [Date Viewed], [Web link].

Access constraints
Other restrictions
Other constraints
Access constraints: No limitations on public access.
Spatial representation type
Vector
Metadata language
English
Topic category
  • Environment
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Begin date
2011-01-01
End date
2016-12-31
Unique resource identifier
EPSG:3035
Distribution format
  • ESRI Shapefile ( 1.0 )

OnLine resource
Download dataset ( WWW:LINK-1.0-http--link )
OnLine resource
Open in Map Viewer ( WWW:LINK-1.0-http--link )
Hierarchy level
Dataset

Conformance result

Date (Publication)
2010-12-08
Statement

The pre-Chernobyl values used to derive the threshold value have been calculated based on data in the HELCOM MORS database. The data used for defining the threshold value for 137Cs concentrations in herring, flatfish (plaice and flounder) and surface waters were collected between 1984 and 1985. The mean pre-Chernobyl 137Cs concentrations have been used as threshold values.

The evaluation of whether the threshold is achieved or not is carried out by calculating the mean value for all samples during the assessed year in each assessment unit and comparing this against the threshold values.


Data covers most of the Baltic Sea. Data of each matrix (herring, plaice and flounder and sea water) have been averaged by sub-basin and by year. The data is collected by national authorities and reported annually to the HELCOM MORS Database. In addition to national quality assurance procedures, manual quality assurance is applied to the reported data and data entries are verified annually by the HELCOM MORS Expert Group.


Additional information:

http://www.helcom.fi/baltic-sea-trends/indicators/radioactive-substances-cesium-137-in-fish-and-surface-seawater/


Link to metadata of the indicator for flatfish and herring:

http://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/06209e7e-650e-4eed-9642-cadb8e883452

http://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/2ac9b4b4-cf84-4c56-aad3-6c2b6192be37

File identifier
c1ee139e-bdf7-4e95-8b5d-e7577f7433f8 XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2021-09-24T11:20:11
pointOfContact
  HELCOM Secretariat
 
 

Overviews

Spatial extent

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E
W
thumbnail


Keywords

GEMET - INSPIRE themes, version 1.0
Oceanographic geographical features

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Associated resources

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