Definition: OGP XML
<div class="syntax"><pre><span class="cp"><?xml version="1.0" encoding="UTF-8"?></span>
<span class="nt"><gml:VerticalDatum</span> <span class="na">xmlns:epsg=</span><span class="s">"urn:x-ogp:spec:schema-xsd:EPSG:1.0:dataset"</span> <span class="na">xmlns:gml=</span><span class="s">"http://www.opengis.net/gml/3.2"</span> <span class="na">xmlns:xlink=</span><span class="s">"http://www.w3.org/1999/xlink"</span> <span class="na">gml:id=</span><span class="s">"iogp-datum-5111"</span><span class="nt">></span>
<span class="nt"><gml:metaDataProperty></span>
<span class="nt"><epsg:CommonMetaData></span>
<span class="nt"><epsg:type></span>vertical<span class="nt"></epsg:type></span>
<span class="nt"><epsg:alias</span> <span class="na">alias=</span><span class="s">"AHD"</span> <span class="na">code=</span><span class="s">"253"</span> <span class="na">codeSpace=</span><span class="s">"urn:ogc:def:naming-system:EPSG::7302"</span> <span class="nt">/></span>
<span class="nt"><epsg:alias</span> <span class="na">alias=</span><span class="s">"AHD71"</span> <span class="na">code=</span><span class="s">"7574"</span> <span class="na">codeSpace=</span><span class="s">"urn:ogc:def:naming-system:EPSG::7301"</span><span class="nt">></span>
<span class="nt"><epsg:remarks></span>Applies prior to 2018 to mainland only.<span class="nt"></epsg:remarks></span>
<span class="nt"></epsg:alias></span>
<span class="nt"><epsg:alias</span> <span class="na">alias=</span><span class="s">"AHD-TAS83"</span> <span class="na">code=</span><span class="s">"7596"</span> <span class="na">codeSpace=</span><span class="s">"urn:ogc:def:naming-system:EPSG::7301"</span><span class="nt">></span>
<span class="nt"><epsg:remarks></span>Applies prior to 2018 to Tasmania only.<span class="nt"></epsg:remarks></span>
<span class="nt"></epsg:alias></span>
<span class="nt"><epsg:informationSource></span>GDA2020 Technical Manual (http://www.icsm.gov.au).<span class="nt"></epsg:informationSource></span>
<span class="nt"><epsg:revisionDate></span>2018-04-20<span class="nt"></epsg:revisionDate></span>
<span class="nt"><epsg:changes></span>
<span class="nt"><epsg:changeID</span> <span class="na">xlink:href=</span><span class="s">"urn:ogc:def:change-request:EPSG::2005.460"</span> <span class="nt">/></span>
<span class="nt"><epsg:changeID</span> <span class="na">xlink:href=</span><span class="s">"urn:ogc:def:change-request:EPSG::2018.009"</span> <span class="nt">/></span>
<span class="nt"></epsg:changes></span>
<span class="nt"><epsg:show></span>true<span class="nt"></epsg:show></span>
<span class="nt"><epsg:isDeprecated></span>false<span class="nt"></epsg:isDeprecated></span>
<span class="nt"></epsg:CommonMetaData></span>
<span class="nt"></gml:metaDataProperty></span>
<span class="nt"><gml:identifier</span> <span class="na">codeSpace=</span><span class="s">"IOGP"</span><span class="nt">></span>urn:ogc:def:datum:EPSG::5111<span class="nt"></gml:identifier></span>
<span class="nt"><gml:name></span>Australian Height Datum<span class="nt"></gml:name></span>
<span class="nt"><gml:remarks></span>Initially defined for mainland only, with independent height datums for Australian mainland, Tasmania, Christmas Island and Cocos and Keeling Islands. With introduction of Ausgeoid2020 in 2017, all considered to be AHD.<span class="nt"></gml:remarks></span>
<span class="nt"><gml:domainOfValidity</span> <span class="na">xlink:href=</span><span class="s">"urn:ogc:def:area:EPSG::4493"</span> <span class="nt">/></span>
<span class="nt"><gml:scope></span>Topographic mapping, geodetic survey.<span class="nt"></gml:scope></span>
<span class="nt"><gml:anchorDefinition></span>Mainland: MSL 1966-68 at 30 gauges around coast. Tasmania: MSL 1972 at Hobart and Burnie. Christmas Island: MSL (details unspecified). Cocos and Keeling Islands: MSL (details unspecified).<span class="nt"></gml:anchorDefinition></span>
<span class="nt"><gml:realizationEpoch></span>1971-05-05<span class="nt"></gml:realizationEpoch></span>
<span class="nt"></gml:VerticalDatum></span>
</pre></div>
<?xml version="1.0" encoding="UTF-8"?>
<gml:VerticalDatum xmlns:epsg="urn:x-ogp:spec:schema-xsd:EPSG:1.0:dataset" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xlink="http://www.w3.org/1999/xlink" gml:id="iogp-datum-5111">
<gml:metaDataProperty>
<epsg:CommonMetaData>
<epsg:type>vertical</epsg:type>
<epsg:alias alias="AHD" code="253" codeSpace="urn:ogc:def:naming-system:EPSG::7302" />
<epsg:alias alias="AHD71" code="7574" codeSpace="urn:ogc:def:naming-system:EPSG::7301">
<epsg:remarks>Applies prior to 2018 to mainland only.</epsg:remarks>
</epsg:alias>
<epsg:alias alias="AHD-TAS83" code="7596" codeSpace="urn:ogc:def:naming-system:EPSG::7301">
<epsg:remarks>Applies prior to 2018 to Tasmania only.</epsg:remarks>
</epsg:alias>
<epsg:informationSource>GDA2020 Technical Manual (http://www.icsm.gov.au).</epsg:informationSource>
<epsg:revisionDate>2018-04-20</epsg:revisionDate>
<epsg:changes>
<epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2005.460" />
<epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2018.009" />
</epsg:changes>
<epsg:show>true</epsg:show>
<epsg:isDeprecated>false</epsg:isDeprecated>
</epsg:CommonMetaData>
</gml:metaDataProperty>
<gml:identifier codeSpace="IOGP">urn:ogc:def:datum:EPSG::5111</gml:identifier>
<gml:name>Australian Height Datum</gml:name>
<gml:remarks>Initially defined for mainland only, with independent height datums for Australian mainland, Tasmania, Christmas Island and Cocos and Keeling Islands. With introduction of Ausgeoid2020 in 2017, all considered to be AHD.</gml:remarks>
<gml:domainOfValidity xlink:href="urn:ogc:def:area:EPSG::4493" />
<gml:scope>Topographic mapping, geodetic survey.</gml:scope>
<gml:anchorDefinition>Mainland: MSL 1966-68 at 30 gauges around coast. Tasmania: MSL 1972 at Hobart and Burnie. Christmas Island: MSL (details unspecified). Cocos and Keeling Islands: MSL (details unspecified).</gml:anchorDefinition>
<gml:realizationEpoch>1971-05-05</gml:realizationEpoch>
</gml:VerticalDatum>