Geotargeted Alerts and Warnings: Report of a Workshop on Current Knowledge and Research Gaps is the summary of a February, 2013 workshop convened by the Computer Science and Telecommunications Board of the National Research Council to examine precise geotargeting of public alerts and warnings using social media. The workshop brought together social science researchers, technologists, emergency management professionals, and other experts to explore what is known about how the public responds to geotargeted alerts and warnings, technologies and techniques for enhancing the geotargeting of alerts and warnings, and open research questions about how to effectively use geotargeted alerts and warnings and technology gaps. This report considers the potential for more precise geographical targeting to improve the effectiveness of disaster alerts and warnings; examines the opportunities presented by current and emerging technologies to create, deliver, and display alerts and warnings with greater geographical precision; considers the circumstances where more granular targeting would be useful; and examines the potential roles of federal, state, and local agencies and private sector information and communications providers in delivering more targeted alerts.

Geotargeted Alerts and Warnings: Report of a Workshop on Current Knowledge and Research Gaps is the summary of a February, 2013 workshop convened by the Computer Science and Telecommunications Board of the National Research Council to examine precise geotargeting of public alerts and warnings using social media. The workshop brought together social science researchers, technologists, emergency management professionals, and other experts to explore what is known about how the public responds to geotargeted alerts and warnings, technologies and techniques for enhancing the geotargeting of alerts and warnings, and open research questions about how to effectively use geotargeted alerts and warnings and technology gaps. This report considers the potential for more precise geographical targeting to improve the effectiveness of disaster alerts and warnings; examines the opportunities presented by current and emerging technologies to create, deliver, and display alerts and warnings with greater geographical precision; considers the circumstances where more granular targeting would be useful; and examines the potential roles of federal, state, and local agencies and private sector information and communications providers in delivering more targeted alerts.

How can over-alerting and warning fatigue be reduced? One possible solution is to send tornado warnings as accurately geo-targeted Wireless Emergency Alerts (WEAs). This study shows that over-alerting rates can be reduced if the geo-targeting capabilities of WEA are used effectively.

Following a series of natural disasters, including Hurricane Katrina, that revealed shortcomings in the nation's ability to effectively alert populations at risk, Congress passed the Warning, Alert, and Response Network (WARN) Act in 2006. Today, new technologies such as smart phones and social media platforms offer new ways to communicate with the public, and the information ecosystem is much broader, including additional official channels, such as government social media accounts, opt-in short message service (SMS)-based alerting systems, and reverse 911 systems; less official channels, such as main stream media outlets and weather applications on connected devices; and unofficial channels, such as first person reports via social media. Traditional media have also taken advantage of these new tools, including their own mobile applications to extend their reach of beyond broadcast radio, television, and cable. Furthermore, private companies have begun to take advantage of the large amounts of data about users they possess to detect events and provide alerts and warnings and other hazard-related information to their users. More than 60 years of research on the public response to alerts and warnings has yielded many insights about how people respond to information that they are at risk and the circumstances under which they are most likely to take appropriate protective action. Some, but not all, of these results have been used to inform the design and operation of alert and warning systems, and new insights continue to emerge. Emergency Alert and Warning Systems reviews the results of past research, considers new possibilities for realizing more effective alert and warning systems, explores how a more effective national alert and warning system might be created and some of the gaps in our present knowledge, and sets forth a research agenda to advance the nation's alert and warning capabilities.

This report also examines how WEAs can be used to evacuate the public from the threat area in each scenario. It evaluates the benefits of providing advance warning of these threats and the potential performance advantages of using alternative cell antenna selection methods for geo-targeting WEA messages.

Representing the definitive reference work for this broad and dynamic field, The International Encyclopedia of Geography arises from an unprecedented collaboration between Wiley and the American Association of Geographers (AAG) to review and define the concepts, research, and techniques in geography and interrelated fields. Available as a robust online resource and as a 15-volume full-color print set, the Encyclopedia assembles a truly global group of scholars for a comprehensive, authoritative overview of geography around the world. Contains more than 1,000 entries ranging from 1,000 to 10,000 words offering accessible introductions to basic concepts, sophisticated explanations of complex topics, and information on geographical societies around the world Assembles a truly global group of more than 900 scholars hailing from over 40 countries, for a comprehensive, authoritative overview of geography around the world Provides definitive coverage of the field, encompassing human geography, physical geography, geographic information science and systems, earth studies, and environmental science Brings together interdisciplinary perspectives on geographical topics and techniques of interest across the social sciences, humanities, science, and medicine Features full color throughout the print version and more than 1,000 illustrations and photographs Annual updates to online edition

Following a series of natural disasters, including Hurricane Katrina, that revealed shortcomings in the nation's ability to effectively alert populations at risk, Congress passed the Warning, Alert, and Response Network (WARN) Act in 2006. Today, new technologies such as smart phones and social media platforms offer new ways to communicate with the public, and the information ecosystem is much broader, including additional official channels, such as government social media accounts, opt-in short message service (SMS)-based alerting systems, and reverse 911 systems; less official channels, such as main stream media outlets and weather applications on connected devices; and unofficial channels, such as first person reports via social media. Traditional media have also taken advantage of these new tools, including their own mobile applications to extend their reach of beyond broadcast radio, television, and cable. Furthermore, private companies have begun to take advantage of the large amounts of data about users they possess to detect events and provide alerts and warnings and other hazard-related information to their users. More than 60 years of research on the public response to alerts and warnings has yielded many insights about how people respond to information that they are at risk and the circumstances under which they are most likely to take appropriate protective action. Some, but not all, of these results have been used to inform the design and operation of alert and warning systems, and new insights continue to emerge. Emergency Alert and Warning Systems reviews the results of past research, considers new possibilities for realizing more effective alert and warning systems, explores how a more effective national alert and warning system might be created and some of the gaps in our present knowledge, and sets forth a research agenda to advance the nation's alert and warning capabilities.