Table 5 Additional non-hazard and hazard information present on maps, with an indication of frequency based on mentions made by participants (note: because participants may not have listed all additional elements present, these should be considered minimum percentages)
From: The diversity of volcanic hazard maps around the world: insights from map makers
Category | Detailed element | Frequency (% of maps) |
|---|---|---|
Cartographic elements and landmarks | Water bodies and rivers, including dams and irrigation diversions | 29% |
Geographical features, e.g., coastlines, monuments | 12% | |
Administrative boundaries | 12% | |
Scale | 11% | |
Contour lines | 8% | |
Inset map of wider region | 7% | |
North arrow | 6% | |
Legend | 4% | |
Exposure information | Roads (and car parks) | 62% |
Population centres (cities, towns, and villages) | 52% | |
Key buildings (e.g., health facilities) | 18% | |
Infrastructure (e.g., lifeline systems such as mobile network coverage) | 15% | |
Other transportation (airports, ports, bus stops, ski lifts, anchorages) | 11% | |
Railways and stations | 6% | |
Hiking trails and hiking huts | 2% | |
Life safety information | What to do information (in the event of an eruption; mountain safety) | 12% |
Evacuation information (e.g., routes/welfare centres/safe areas/shelters) | 9% | |
Extra hazard information | Wind rose | 11% |
Glossary of terms; explanation of hazards and eruptions styles | 10% | |
Location of observatory and monitoring network; warning systems | 9% | |
Where to go for more information (e.g., websites/QR codes/phone numbers) | 4% | |
Description of alert levels or warning systems | 3% | |
Information about simulations/modelling | 2% | |
Photographs of volcano(es); aerial photographs of surrounding area | 2% |