The term "Information Cycle" refers to the way that information is produced and distributed, and how it changes over time. Usually, it's used to describe the progression of media coverage relating to a particular newsworthy event or topic.
Understanding how the information cycle works will help you to know what kinds of information may be available on your topic as you locate and evaluate research sources.
The progression of the information cycle is connected to the amount of time after an event:
Information Cycle
The information cycle shows how information is distributed after a significant event and how that information can change over time.
Television, Social Media, and the Web
Newspapers
Weekly Popular Magazines and News Magazines
Academic, Scholarly Journals
Books
Government Reports
A Boston Globe tweet on the day of the marathon bombing:
https://twitter.com/BostonGlobe/status/323872661866442753?ref_src=twsrc%5Etfw
A Boston Globe article on the 102 hours spent trying to capture the suspects:
http://www.bostonglobe.com/metro/2013/04/28/bombreconstruct/VbSZhzHm35yR88EVmVdbDM/story.html
An Atlantic article about the suspect a few weeks after the event. The Atlantic is a print and online magazine that focuses on current events:
A peer reviewed article from one of the library's databases examining local politicians and city officials capturing the suspects alongside public opinion of their work:
A book about the events and brothers:
https://mcc-catalog.helmlib.org/cgi-bin/koha/opac-detail.pl?biblionumber=129815
Trial transcripts:
https://www.justice.gov/usao-ma/victim-and-witness-assistance-program/boston-marathon-case-updates