2. Open/Key Research Challenges  
3. Disaster Detection in Social Media  
3.1. Disaster Detection in Twitter Text  
3.2. Disaster Detection in Images from Social Media  
4. Disaster Detection in Satellite Imagery  
5. Current Trends in Disaster Analysis  
6. Datasets  
6.1. Twitter Datasets  
6.2. Images Datasets  
6.3. Satellite Imagery Datasets  
7. Summary and Future Directions