U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov

A .gov website belongs to an official government organization in the United States.


Secure .gov websites use HTTPS

A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites..

PrepTalks: Dr. Sophia B. Liu “Crowdsourcing and Citizen Science as Force Multipliers”

Release Date

Symposium date: September 19, 2019

In her PrepTalk, Dr. Sophia Liu highlights how social media can be an effective communication channel in disasters, how emergency managers can incorporate data provided by the general public into actionable intelligence during an emergency response, and how citizens can assist with data collection, processing, and analysis. 

Dr. Sophia B. Liu is an Innovation Specialist at the U.S. Geological Survey (USGS) Science and Decisions Center specializing in participatory science and open innovation. Dr. Liu is also the Co-Chair of the Federal Community of Practice for Crowdsourcing and Citizen Science (CCS) and the USGS Crowdsourcing and Citizen Science Coordinator.

Download PrepTalk Materials

View Other PrepTalks

Preptalks are given by subject-matter experts and through leaders to spread new ideas, spark conversation and promote innovative leadership for the issues confronting emergency managers over the next 20 years. Explore more videos.

Last updated March 22, 2021