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Hillshades represent an illuminated modelled surface derived from an elevation model. Depending on the illumination direction, azimuth, and degree of vertical exaggeration, hillshades can be used to highlight subtle geomorphology and seafloor features. <\/SPAN><\/SPAN><\/P>

These data present a modelled multi-directional hillshade derived from the bathymetric elevation model (50 cm resolution) of the HS52 - Approaches to Auckland survey area. Survey HS52 was undertaken by Discovery Marine Limited (DML) on behalf of Land Information New Zealand (LINZ) for hydrographic charting purposes.<\/SPAN><\/P>

Compared to traditional hillshades which are illuminated from a single source point only, a multi-directional hillshade is illuminated from 6 separate directions simultaneously, resulting in a more 'natural' expression of terrain. This hillshade has been vertically exaggerated by a factor of 3, resulting in greater expression of more subtle geomorphology.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "geometryType": null, "copyrightText": "Survey HS52 undertaken by Discovery Marine Ltd. (DML)\nRaw data provided by Land Information New Zealand (LINZ)\nBathymetry processed by National Institute of Water and Atmospheric Research (NIWA)\nData processed on behalf of Te Kaunihera o Tāmaki Makaurau / Auckland Council", "parentLayer": { "id": 0, "name": "HS52 - Approaches to Auckland" }, "subLayers": [], "minScale": 0, "maxScale": 0, "defaultVisibility": true, "extent": { "xmin": 1756313, "ymin": 5928985, "xmax": 1775705, "ymax": 5950681, "spatialReference": { "wkid": 2193, "latestWkid": 2193, "vcsWkid": 115765, "latestVcsWkid": 115765, "xyTolerance": 0.001, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -4020900, "falseY": 1900, "xyUnits": 10000, "falseZ": -100000, "zUnits": 10000, "falseM": -100000, "mUnits": 10000 } }, "heightModelInfo": { "heightModel": "ellipsoidal", "vertCRS": "NZGD_2000", "heightUnit": "meter" }, "supportsVCSProjection": true, "hasAttachments": false, "htmlPopupType": "esriServerHTMLPopupTypeNone", "displayField": "", "typeIdField": null, "subtypeFieldName": null, "subtypeField": null, "defaultSubtypeCode": null, "fields": null, "geometryField": {}, "indexes": [], "subtypes": [], "relationships": [], "canModifyLayer": false, "canScaleSymbols": false, "hasLabels": false, "capabilities": "Map,Query", "supportsStatistics": false, "supportsExceedsLimitStatistics": false, "supportsAdvancedQueries": false, "supportedQueryFormats": "JSON, geoJSON, PBF", "isDataVersioned": false, "ownershipBasedAccessControlForFeatures": {"allowOthersToQuery": true}, "useStandardizedQueries": true, "advancedQueryCapabilities": { "useStandardizedQueries": true, "supportsStatistics": false, "supportsPercentileStatistics": false, "supportsHavingClause": false, "supportsOrderBy": false, "supportsDistinct": false, "supportsCountDistinct": false, "supportsPagination": false, "supportsLod": false, "supportsQueryWithLodSR": false, "supportsTrueCurve": true, "supportsQueryWithDatumTransformation": true, "supportsReturningQueryExtent": true, "supportsQueryWithDistance": true, "supportsSqlExpression": false, "supportsTimeRelation": true, "supportsSqlFormat": false, "supportsQueryAnalytic": false }, "supportsDatumTransformation": true, "dateFieldsTimeReference": null, "preferredTimeReference": null, "datesInUnknownTimezone": false, "hasMetadata": true, "isDataArchived": false, "archivingInfo": { "supportsQueryWithHistoricMoment": false, "startArchivingMoment": -1 }, "supportsCoordinatesQuantization": true, "supportsDynamicLegends": true, "serviceItemId": "985e46845fb045bd8a814e8171bd33b2" }