Computer Science. Digital Library Research LaboratoryFox, Edward A.Shoemaker, Donald J.Sheetz, Steven D.Kavanaugh, Andrea L.Ramakrishnan, Naren2015-05-292015-05-292011-07-01Fox, Edward A., Donald Shoemaker, Steven D. Sheetz, Andrea L. Kavanaugh, Naren Ramakrishan. NSF 2nd Year Report: CTRnet: Integrated Digital Library Support for Crisis, Tragedy, and Recovery. 2011.http://hdl.handle.net/10919/52857One of the important parts of this project is to collect and archive as much information as possible about various events that are related to crises, tragedies, and recovery (CTR). In order to do long-term archiving of information, we have worked with the Internet Archive (IA), a non-profit organization, whose goal is to archive the Internet. IA provides access to web crawlers that can be used to selectively crawl and archive webpages. In disaster situations, it is well known that people use micro-blogging sites such as Twitter to reach their family and friends especially when their cell phones are not working due to high volume of traffic on the cell phone network. For this reason, tweet posts sometimes report CTR events faster than the mainstream news media. Those tweets often contain more detailed information, too, reported by the affected people on the site. We have been archiving tweets (i.e., posts from Twitter.com) for both man-made and natural disaster events. Collected tweets can be exported in various formats including XSL, JSON, and HTML -- to be analyzed later using software tools.18 pagesapplication/pdfen-USIn CopyrightInternet archiveCrisesMicrobloggingTwitterTechnical reporthttp://eventsarchive.org/sites/default/files/NSF%202nd%20Year%20Report-draft-v3.pdf