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Crisis mapping (also known as disaster mapping) is the real-time gathering, display and analysis of data during a crisis, usually a natural disaster or social/political conflict (violence, elections, etc.). Crisis mapping projects usually allows large numbers of people, including the public and crisis responders, to contribute information either remotely or from the site of the crisis. One benefit of the crisis mapping method over others is that it can increase situational awareness, since the public can report information and improve data management.
Crisis mappers work with data that comes from diverse sources and can be produced for varying purposes. As such, there is some overlap with big data, international development, and community engagement.
Since 2010, crisis mappers have mapped events in Libya (refugees), Japan (crowdsourcing and radiation monitoring for 2011 TÅhoku earthquake and tsunami), Chile (Humanitarian response to the 2010 Chile earthquake), Pakistan (2010 Pakistan floods, 2011 floods), Somalia (refugees), Alabama (2011 Super Outbreak), and dozens of smaller disasters and events around the world.
Zaatari refugee camp in Jordan, hosting Syrians escaping the war, is being actively mapped on OpenStreetMap by UNHCR and REACH workers.
Crisis mappers are usually volunteers, meaning they contribute wage labor. They can be professional mappers, software developers, data analysts, or members of the public. Since it is a new field, crisis mapping engages users' existing skills, rather than field-specific skills. However, new skills are often acquired during "deployments", where a crisis mapping organization and interface is established to begin collecting data.
Instances of crisis mapping usually have a goal to process and/or produce data that would be of value in the crisis. Examples of processing data include geolocation news reports, and classifying or translating text messages. It is common to web scraping social media sites for crisis-specific keywords. For instance, crisis mapping can include gathering tweets that have a specific designated hashtag. Examples of producing data are creating geographic data by "tracing" buildings or roads on aerial imagery, identifying refugee camps in aerial imagery.
These activities are usually crowdsourcing to one degree or another and coordinated via online applications. Dedicated software is often used, for example based on Ushahidi or Sahana. "Mechanical-turk" techniques are sometimes used to break up tasks into tiny chunks that can be completed quickly. Often social technologies are also frequently used, like Skype or Google Drive.
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