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Backscatter group layer shows the measurement of relative intensity reflected from the seafloor and is used to delineate benthic habitat types (hard vs. soft). The relative intensity (backscatter) is a result of measuring the strength of an individual ping absorbing or reflecting off the seafloor during multibeam acquisition.<\/SPAN><\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "geometryType": null, "copyrightText": "Attn: Dr. Chris Taylor\nNOAA/NOS/NCCOS/Beaufort Lab\n101 Pivers Island Road\nBeaufort, NC 28516-9722\nchris.taylor@noaa.gov\n\nGeodynamics, LLC. \n310-A Greenfield Drive\nNewport, North Carolina 28570", "parentLayer": null, "subLayers": [ { "id": 423, "name": "2021 Tortugas Ecological Reserve North " }, { "id": 422, "name": "2020 Marquesas West" }, { "id": 421, "name": "2020 South of Rileys Hump" }, { "id": 373, "name": "2018 North Marquesas" }, { "id": 48, "name": "2012-2018 Marquesas" }, { "id": 47, "name": "2010-2017 Upper Keys" }, { "id": 49, "name": "2004-2018 Tortugas Ecological Reserve North and South" } ], "minScale": 0, "maxScale": 0, "defaultVisibility": true, "extent": { "xmin": -9260214.503277011, "ymin": 2796891.8215360255, "xmax": -8925571.327423021, "ymax": 2904809.060581195, "spatialReference": { "wkid": 102100, "latestWkid": 3857, "xyTolerance": 0.001, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -20037700, "falseY": -30241100, "xyUnits": 10000, "falseZ": -100000, "zUnits": 10000, "falseM": -100000, "mUnits": 10000 } }, "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": false }