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Hong Kong Slope Safety

The site includes information on 57,000 Registered Slopes in the Territory, as well as information on maintaining slopes, educational materials, and general information on slopes.


Cascades Volcano Observatory

The U.S. Geological Survey's Cascades Volcano Observatory (CVO) strives to serve the national interest by helping people to live knowledgeably and safely with volcanoes and related natural hazards including earthquakes, landslides, and debris flows in the western United States and elsewhere in the world. CVO assesses hazards before they occur by identifying and studying past hazardous events. We provide warnings during volcanic crises by intensively monitoring restless volcanoes and interpreting results in the context of current hazards assessments.


Alaska Volcano Observatory

The Alaska Volcano Observatory (AVO) is a joint program of the United States Geological Survey (USGS), the Geophysical Institute of the University of Alaska Fairbanks (UAFGI), and the State of Alaska Division of Geological and Geophysical Surveys (ADGGS). AVO was formed in 1988, and uses federal, state, and university resources to monitor and study Alaska's hazardous volcanoes, to predict and record eruptive activity, and to mitigate volcanic hazards to life and property.


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