319 escarpments with a centre line each, its length, height, slope and aspect, totalling 11,272 km, of which 18 exceed one hundred kilometres.
With 900 ridges kept separate by an explicit field, because slope-based detection alone picks up dune crests. Mean escarpment height is 202.8 m.
In short
319 escarpments totalling 11,272 km, of which 18 exceed one hundred kilometres.
The longest escarpments are listed in the table.
Mean escarpment height is 202.8 m, the tallest 1762.7 m.
Who it is for
Physical geography and geomorphology departments, road and transmission route studies, geological tourism, and rockfall hazard assessment.
Method: what we add to the raw data
- An escarpment is a long edge where the surface drops sharply over a short distance, so it is detected by two conditions together: cell slope of eight degrees or more, and an elevation range of eighty metres or more within a two-kilometre window. Together these exclude both the long gentle slope and the small sharp knob.
- The detected mass is wide and branching, and its length cannot be measured from its perimeter, which is many times its length. Each mass is skeletonised to a one-cell centre line, its short branches pruned, and its longest path taken, so the length is the escarpment length itself.
- An escarpment is told from a dune ridge by the step in the land: an escarpment is a step, one side staying higher along its length (a plateau over a plain), while a ridge is a symmetric rise with both sides at similar height. The mean elevation two kilometres to each side is measured, and a difference of fifty metres or more marks an escarpment.
- For each escarpment, mean and maximum height, slope, crest and base elevation, and aspect by circular mean were computed.
- Work was done on the national 90 m grid: an escarpment is a feature tens of kilometres long, and this avoids cutting the Kingdom into blocks that a single escarpment would cross.
Product details
| What you get | 1 spatial layer in GeoPackage, 2 CSV tables, lyrx and qml symbology for ArcGIS Pro and QGIS, a PNG map at 220 dpi, and an Arabic and English guide |
|---|---|
| Formats | GPKG, CSV, lyrx, qml, PNG |
| Coordinate system | WGS 84 (EPSG:4326) |
| Licence | Commercial use allowed for you and the organisation you buy for; no resale or redistribution |
| Delivery | A private download link valid for 24 hours, within 6 hours of payment confirmation |
| Package size | ZIP 3.8 MB |
| Personal data | The product contains no personal data |
Spatial layers
escarpments— lines, 1,219: Escarpment and ridge lines with their attributes
Tables
D123_escarpments.csv— 1,219 rows: Escarpments and ridges tableD123_by_governorate.csv— 55 rows: Escarpments per governorate
Limitations
- The classification describes surface form, not origin: an escarpment here is a step in the land, which may be a rock scarp, a plateau edge or a lava-field margin, told apart by geology.
- The line is the axis of the escarpment band, not its exact surveyed edge; it suits mapping and length measurement, not fixing a boundary.
- At 90 m cells, escarpments lower than eighty metres or shorter than ten kilometres do not appear.
- The fifty-metre step threshold is a methodological choice: below it a line is called a ridge, and the value is given in the field itself so users can reclassify.
- Ridges are included in the same file with a field distinguishing them, so escarpments alone can be filtered.
- The elevation model derives from imagery acquired up to 2024, so later earthworks are not represented.
FAQ
- How long does delivery take?
- Up to 6 hours after payment is confirmed.
- How long does the download link last?
- 24 hours, and it is renewed free on request.
- Can I get a refund?
- Digital products are not refundable once downloaded — unless the file is defective or does not match the description, in which case it is replaced or fully refunded.
- What does the licence allow?
- Commercial use is allowed for you and the organisation you buy for; resale or redistribution is not.