EPSG:5452

<?xml version="1.0" encoding="UTF-8"?>
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  <gml:metaDataProperty>
    <epsg:CommonMetaData>
      <epsg:type>transformation</epsg:type>
      <epsg:alias alias="Belfast Lough height to Malin Head height" code="4029" codeSpace="urn:ogc:def:naming-system:EPSG::7301" />
      <epsg:informationSource>"The Irish Grid - A Description of the Co-ordinate Reference System" published by Ordnance Survey of Ireland, Dublin and Ordnance Survey of Northern Ireland, Belfast.</epsg:informationSource>
      <epsg:revisionDate>2017-10-16</epsg:revisionDate>
      <epsg:changes>
        <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2009.106" />
        <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2014.027" />
      </epsg:changes>
      <epsg:show>true</epsg:show>
      <epsg:isDeprecated>false</epsg:isDeprecated>
    </epsg:CommonMetaData>
  </gml:metaDataProperty>
  <gml:metaDataProperty>
    <epsg:CoordinateOperationMetaData>
      <epsg:variant>1</epsg:variant>
    </epsg:CoordinateOperationMetaData>
  </gml:metaDataProperty>
  <gml:identifier codeSpace="IOGP">urn:ogc:def:coordinateOperation:EPSG::5452</gml:identifier>
  <gml:name>Belfast height to Malin Head height (1)</gml:name>
  <gml:remarks>Belfast vertical reference surface is 37mm below Malin Head surface.</gml:remarks>
  <gml:domainOfValidity xlink:href="urn:ogc:def:area:EPSG::2530" />
  <gml:scope>Change of height to a different vertical reference surface for large scale topographic mapping and engineering survey.</gml:scope>
  <gml:operationVersion>OSNI-Gbr NI</gml:operationVersion>
  <gml:coordinateOperationAccuracy>
    <gmd:DQ_RelativeInternalPositionalAccuracy>
      <gmd:result>
        <gmd:DQ_QuantitativeResult>
          <gmd:valueUnit xlink:href="urn:ogc:def:uom:EPSG::9001" />
          <gmd:value>
            <gco:Record>
              <gco:Decimal>0.01</gco:Decimal>
            </gco:Record>
          </gmd:value>
        </gmd:DQ_QuantitativeResult>
      </gmd:result>
    </gmd:DQ_RelativeInternalPositionalAccuracy>
  </gml:coordinateOperationAccuracy>
  <gml:sourceCRS xlink:href="urn:ogc:def:crs:EPSG::5732" />
  <gml:targetCRS xlink:href="urn:ogc:def:crs:EPSG::5731" />
  <gml:method xlink:href="urn:ogc:def:method:EPSG::9616" />
  <gml:parameterValue>
    <gml:ParameterValue>
      <gml:value uom="urn:ogc:def:uom:EPSG::9001">-0.037</gml:value>
      <gml:operationParameter xlink:href="urn:ogc:def:parameter:EPSG::8603" />
    </gml:ParameterValue>
  </gml:parameterValue>
</gml:Transformation>