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-5171"</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">"EGM96"</span> <span class="na">code=</span><span class="s">"7028"</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:informationSource></span>NASA http://cddis.gsfc.nasa.gov/926/egm96/egm96.html<span class="nt"></epsg:informationSource></span>
<span class="nt"><epsg:revisionDate></span>2015-11-25<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::2015.056"</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::5171<span class="nt"></gml:identifier></span>
<span class="nt"><gml:name></span>EGM96 geoid<span class="nt"></gml:name></span>
<span class="nt"><gml:remarks></span>Replaces EGM84 geoid (datum code 5203). Replaced by EGM2008 geoid (datum code 1027).<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::1262"</span> <span class="nt">/></span>
<span class="nt"><gml:scope></span>Geodesy.<span class="nt"></gml:scope></span>
<span class="nt"><gml:anchorDefinition></span>Derived through EGM84 geoid undulation model consisting of spherical harmonic coefficients to degree and order 360 applied to the WGS 84 ellipsoid.<span class="nt"></gml:anchorDefinition></span>
<span class="nt"><gml:realizationEpoch></span>1996-01-01<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-5171">
<gml:metaDataProperty>
<epsg:CommonMetaData>
<epsg:type>vertical</epsg:type>
<epsg:alias alias="EGM96" code="7028" codeSpace="urn:ogc:def:naming-system:EPSG::7302" />
<epsg:informationSource>NASA http://cddis.gsfc.nasa.gov/926/egm96/egm96.html</epsg:informationSource>
<epsg:revisionDate>2015-11-25</epsg:revisionDate>
<epsg:changes>
<epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2015.056" />
</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::5171</gml:identifier>
<gml:name>EGM96 geoid</gml:name>
<gml:remarks>Replaces EGM84 geoid (datum code 5203). Replaced by EGM2008 geoid (datum code 1027).</gml:remarks>
<gml:domainOfValidity xlink:href="urn:ogc:def:area:EPSG::1262" />
<gml:scope>Geodesy.</gml:scope>
<gml:anchorDefinition>Derived through EGM84 geoid undulation model consisting of spherical harmonic coefficients to degree and order 360 applied to the WGS 84 ellipsoid.</gml:anchorDefinition>
<gml:realizationEpoch>1996-01-01</gml:realizationEpoch>
</gml:VerticalDatum>