Trujillo

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DDAATTAABBAASSEE

Project Information

Area of Interest:

PERU: Trujillo

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Satellite Imagery used: Quickbird: 005567351100_01_P001_MUL_04th June 2004_04153847 Aster 003_05122004153951_12th May 2004 Project Parameters: Datum: WGS84 (GRS-1980) Projection: South UTM 18

Central Meridian: 75° West Coverage 7° 52' 34" S Geographic bounds: 79° 11' 29" W 78° 47' 54" W (SW corner to NE corner) 8° 15' 37" S 9 127 500m Northing UTM bounds: 38 000m Easting 81 000m Easting 9 084 500m Northing

Peru: Trujillo General Information

Private Bag X20 Constantia 7848Block C, The TerracesSteenberg Office Park

Westlake, 7945Cape Town South AfricaTel +27 (0)21 700 8140Fax+27 (0)21 701 9520

[email protected]

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Package content The delivery contains four (4) dataset layers and a *.pdf document. The data was processed on the 10th December 2008. • A 20 meter resolution Digital Terrain Model (DTM). • A 10 meter resolution ortho image. • A 20 meter resolution Land-Use Raster (morphology). • A vector network. • A Trujillo.pdf document containing the project information (this document). Digital Terrain Model Format The Digital Terrain Model is provided in Planet (“file”) and Planet-EV (MapInfo: *.tab + *.grd) (2bytes, signed) formats. Image information Number of Columns (DIM_X) 2150 pixels Number of Rows (DIM_Y) 2150 pixels Northwest corner (38000m E, 9127500m N) meters Southeast corner (81000m E, 9084500m N) meters Z value unit: meters Pixel size (resolution): 20 meters Planimetric accuracy: 20 meters Vertical accuracy: 7 - 10 meters Altimetric Information The altitudes range between 0 meters and 2120 meters, with an average altitude of approximately 314 meters. Ortho-image Format The Ortho image is provided in Planet (*.tif) and Planet-EV (*.tab + *.tif) formats (RGB, unsigned), and derived from the Quickbird and ASTER satellite imagery. File Content Number of Columns (DIM_X) 4300 pixels Number of Rows (DIM_Y) 4300 pixels Northwest corner (38000m E, 9127500m N) meters Southeast corner (81000m E, 9084500m N) meters Pixel size (resolution): 10 meters Planimetric accuracy: 20 meters

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Morphology Format The morphology is provided in Planet (“file”) and Planet-EV (MapInfo: *.tab + *.grc) formats (2byte, signed) and derived from the Quickbird and ASTER satellite imagery. Image information Number of Columns (DIM_X) 2150 pixels Number of Rows (DIM_Y) 2150 pixels Northwest corner (38000m E, 9127500m N) meters Southeast corner (81000m E, 9084500m N) meters Pixel size (resolution): 20 meters Planimetric accuracy: 20 meters Meaning of the pixel values The values relate to each pixel stored in the image and corresponds to a code representing the land-use type (class). A correspondence table between codes, description and definition is provided. Below are the 18 classes:

Code Description Definition % cover

Building Heights Image sample 1 Image sample 2

1 sea Areas of coastal water, including oceans, bays and estuaries.

6.96 % 0m

2 inland water

Areas of permanent open water. Including natural and man-made bodies, which are either static or flowing (rivers, dams (i.e. reservoirs), permanent pans and lakes)

0.03 % 0m

3 wetland

Areas of open or vegetated land that is periodically inundated with water or covered with shallow standing water.

< 0.01 % 0m

4 barren Areas that contain no vegetation. 33.05 % 0m

5 grass/ agriculture

Agricultural fields typically characterized by their geometric shape and used for the production of annual crops (orchards, vineyards, livestock grazing and hay crops etc). Includes actively tilled land, undeveloped lots, parks and golf courses.

2.63 % 0m

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6 rangeland Scattered low scrub vegetation and areas of mixed grassland. 2.63 % 0-2m

7 woodland

None-continuous, mixed density (30% -60% canopy cover), with young trees or trees that are generally less than five (5) meters.

0.05 % < 5m

8 forest

Continuous cover of plantation and/or native tree species with an average height generally greater than five (5) meters.

0.00 % > 5m

9 village Small built-up areas within rural setting that include suburban and urban classes.

0.11 % 3-8m

10 suburban

Areas of residential settlement mainly single (1) story houses, medium tree cover (<30%). Impervious surface account for 20%-49% of total cover.

1.60 % 3-8m

11 dense suburban

Areas of dense residential settlement, mixed commercial and multi(2-4)-story residential structures, tree cover (<5%). Impervious surfaces account for 50%-79% of total cover.

0.53 % 8-20m

12 urban

Highly developed areas consisting of mixed commercial and multi-family residential structures (Apartments etc). Impervious surface account for 80%-90% of total cover. Average height is below forty (40) meters

0.14 % < 40m

13 dense urban

Areas within the urban perimeter; dense urban with built-up features generally indistinct from each other; heights of buildings below forty (40) meters.

0.06 % < 40m

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14 core urban

Areas within the urban perimeter; dense urban with built-up features generally indistinct from each other; heights of buildings above forty (40) meters. Includes single or small isolated clusters of high buildings.

< 0.01 % > 40m

15 building blocks

Groups of generally narrow buildings that may be parallel and separated by open space; (mostly apartment or office blocks).

< 0.01 % 20-40m

16 industrial

Industrial / commercial / institutional areas including buildings with large footprints. Heights generally below twenty (20) meters and separated by streets wider than twenty (20) meters.

0.40 % < 20m

17 airport Landing strips and runway surfaces. 0.01 % 0m

18 open in urban

Areas with little or no vegetation (paved areas) within the urban footprint, including transportation corridors.

0.09 % 0m

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Vectors Format The vector files are provided in Planet (*.asc) and Planet-EV (*.tab) formats, with nine (9) individual feature files being supplied. Origin and accuracy The vector data was digitised from the Quickbird and ASTER satellite imagery. Planimetric accuracy: 20 meters. Vector Features captured Below are the features classes contained in the vector files: 1 double river 2 highway 3 inland water 4 mainroad 5 railway 6 runway 7 secondary road 8 single river 9 street

Documents

Trujillo