Data source: OGP
Information source: IHO Dictionary, S-32, 5th Edition, 2427.
Revision date: 2017-07-14
Scope: Hydrography and Nautical Charting.
Remarks: Users are advised to not use this generic vertical datum but to define explicit realizations of ISLW by specifying location and epoch, for instance "ISLW at xxx during yyyy-yyyy".
Area of use: World.
Definition: OGP XML
<?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-1085"> <gml:metaDataProperty> <epsg:CommonMetaData> <epsg:type>vertical</epsg:type> <epsg:alias alias="ISLW" code="25211" codeSpace="urn:ogc:def:naming-system:EPSG::7302" /> <epsg:alias alias="Indian Tidal Plane" code="25212" codeSpace="urn:ogc:def:naming-system:EPSG::7301" /> <epsg:informationSource>IHO Dictionary, S-32, 5th Edition, 2427.</epsg:informationSource> <epsg:revisionDate>2017-07-14</epsg:revisionDate> <epsg:changes> <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2011.047" /> <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2017.029" /> </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::1085</gml:identifier> <gml:name>Indian Spring Low Water</gml:name> <gml:remarks>Users are advised to not use this generic vertical datum but to define explicit realizations of ISLW by specifying location and epoch, for instance "ISLW at xxx during yyyy-yyyy".</gml:remarks> <gml:domainOfValidity xlink:href="urn:ogc:def:area:EPSG::1262" /> <gml:scope>Hydrography and Nautical Charting.</gml:scope> <gml:anchorDefinition>The level below MSL equal to the sum of the amplitudes of the harmonic constituents M2, S2, K1 and O1. It approximates mean lower low water spring tides (MLLWS).</gml:anchorDefinition> </gml:VerticalDatum>
<?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-1085"> <gml:metaDataProperty> <epsg:CommonMetaData> <epsg:type>vertical</epsg:type> <epsg:alias alias="ISLW" code="25211" codeSpace="urn:ogc:def:naming-system:EPSG::7302" /> <epsg:alias alias="Indian Tidal Plane" code="25212" codeSpace="urn:ogc:def:naming-system:EPSG::7301" /> <epsg:informationSource>IHO Dictionary, S-32, 5th Edition, 2427.</epsg:informationSource> <epsg:revisionDate>2017-07-14</epsg:revisionDate> <epsg:changes> <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2011.047" /> <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2017.029" /> </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::1085</gml:identifier> <gml:name>Indian Spring Low Water</gml:name> <gml:remarks>Users are advised to not use this generic vertical datum but to define explicit realizations of ISLW by specifying location and epoch, for instance "ISLW at xxx during yyyy-yyyy".</gml:remarks> <gml:domainOfValidity xlink:href="urn:ogc:def:area:EPSG::1262" /> <gml:scope>Hydrography and Nautical Charting.</gml:scope> <gml:anchorDefinition>The level below MSL equal to the sum of the amplitudes of the harmonic constituents M2, S2, K1 and O1. It approximates mean lower low water spring tides (MLLWS).</gml:anchorDefinition> </gml:VerticalDatum>