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Service Description: The USGS Small Scale Shaded Relief from The National Map is a cached tile service that contains shaded relief elevation layers derived from the GTOPO30 dataset. GTOPO30 is a global digital elevation model with a horizontal grid spacing of 30 arc-seconds (approximately 1 kilometer). Small scale shaded relief represents data from GTOPO30 as if it were a surface illuminated by a light source 45 degrees above the northwest horizon. Small scale shaded relief can be viewed from the world scale to 1:9.2M in The National Map viewer. Go to http://eros.usgs.gov/#/Find_Data/Products_and_Data_Available/gtopo30_info for more information on GTOPO30.

Map Name: GTOPO

Layers:

• GTOPO30_120 (0)
• GTOPO30_60 (1)
• GTOPO30_30 (2)

Description:

Copyright Text:

Spatial Reference: 102113

Single Fused Map Cache: true

Tile Info:

• Height: 256
  
• Width: 256
  
• DPI: 96
  
• Levels of Detail: (# Levels: 7)
  
• Level ID: 0 [Start Tile, End Tile]
  Resolution: 156543.033928
  Scale: 591657527.591555
• Level ID: 1 [Start Tile, End Tile]
  Resolution: 78271.5169639999
  Scale: 295828763.795777
• Level ID: 2 [Start Tile, End Tile]
  Resolution: 39135.7584820001
  Scale: 147914381.897889
• Level ID: 3 [Start Tile, End Tile]
  Resolution: 19567.8792409999
  Scale: 73957190.948944
• Level ID: 4 [Start Tile, End Tile]
  Resolution: 9783.93962049996
  Scale: 36978595.474472
• Level ID: 5 [Start Tile, End Tile]
  Resolution: 4891.96981024998
  Scale: 18489297.737236
• Level ID: 6 [Start Tile, End Tile]
  Resolution: 2445.98490512499
  Scale: 9244648.868618
• Format: PNG32
• Compression Quality: 0
• Origin:
  X: -20037508.342787
  Y: 20037508.342787
  
• Spatial Reference: 102113

Intial Extent:

XMin: -52103603.0541955
YMin: -33265069.1542243
XMax: 52103603.0541955
YMax: 33265069.1542243
Spatial Reference: 102113

Full Extent:

XMin: -22041259.1770665
YMin: -33265069.1542242
XMax: 22041259.1770665
YMax: 33265069.1542243
Spatial Reference: 102113

Units: esriMeters

Supported Image Format Types: PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,AI

Document Info:

• Title: TNM Small Scale Shaded Relief
• Author: U.S. Geological Survey – National Geospatial Program
• Comments: See http://viewer.nationalmap.gov/help for assistance with The National Map viewer, services or metadata.
• Subject:
• Category:
• Keywords:

Supported Interfaces:   REST   SOAP   WMS

Supported Operations:   Export Map   Identify   Find   Generate KML