Since the area is quite small, I require high resolution datasets. Some parameters such as regolith thickness and soil characteristics are available only at 1 km or 250 m resolution. Would it make sense if I were to exclude such parameters for making the landslide susceptibility map?
The Earth is a very large place, with considerable variety of conditions, and landslides themselves are a vast topic. One might obtain some useful assistance if the extents, at least the min/max of latitude and longitude of the specific Area of Interest. Also, bonus effect of that might be help finding the types and higher resolution datasets one could use. There are oceans of data collected for specific projects ( academic, NGOs, commercial, small agencies ) and purposes which are never 'officially' published to the major data portals. Those 'low resolution' datasets are almost always aggregated composites of much higher resolution datasets with different periods and extents. Especially the 'exclusion' question, would be very site specific.
Adrian, For landslide susceptibility, one would need as a starting point the slope angle and geology. Reasonable resolution of geology should be available for the small area of yours. The slope angle can be derived from available contours or any other terrain model that might be available for the area, one would think that Lidar is perhaps available. Worst case scenario, one can use spot height from topographic maps to estimate slope angles. Perhaps some of those estimates can be verified or ground truthed from aerial imagery, street view or walkover survey. Then you will need to group the slope angles into ranges of anticipated similar behaviour. Once you have geology, you or an engineering geologist can assign hazard levels to the various geological units. The last step is then to decide what cell size you intend to use for your area, say a 50x 50m or 100x 100 m or perhaps 25x25m cells. In each cell the hazard level from the slope angle and geology is multiplied and a 'risk level" is assigned to the cell. Finally you can contour the cells. So one can generate a digital slope risk assessment model just using very basic publicly available topographic and geology data.
The map elements required for plotting include the following :
1. Map Datum (local and Global);
2. Grid of the map; according the UTM or Geographic reference system;
3. scale of the map;
4. legend of the map;
5. Title of the map;
6. Any information for; more details;
7. North Arrow; and
8.Map logo.
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