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katie's blog

The New Zealand Geotechnical Society - Crowdsources!


NZGS NEWS

Posted on September 23rd, 2011

Christchurch Earthquake of 22 Feb: Try Analyzing Before and After Imagery

 



In the aftermath of a disaster event, high-resolution remote sensing imagery potentially enables rapid mapping of the affected area.  However, to analyse all this data requires lots of work by a human analyst — or a little work by lots of analysts!





GEO-CAN (Global Earth Observation-Catastrophe Assessment Network) is an initiative that has been evolving over recent years and earthquakes (e.g. Haiti, Wenchuan). EERI and its collaborators, including NZSEE, GNS Science, ImageCat, Tomnod, the World Bank, Cambridge Architectural Research, and GEM, have been working on ways to simplify and improve this process, based on Christchurch, so that in the next event a large cadre of analysts from around the world may be mobilised.  Members of EERI were invited some months ago to assess damage due to the Christchurch Earthquake of 22 Feb from before and after satellite imagery.  NZSEE members are now invited to participate too.





 

Results will be analysed by Cambridge Architectural Research, compared to field investigations, and a summary report prepared reviewing accuracy and needed improvements. All this advances abilities to use remote sensing imagery that will likely be available after the next event, any where in the world.

 





You are invited to participate in a new way to crowdsource maps of earthquake damage.  The Tomnod Disaster Mapper presents pre- and post-disaster imagery from the Christchurch earthquake in February 2011 that asks YOU to identify buildings that have suffered damage and geophysical effects (liquefaction, landslides).  This tool runs in your web browser and accepts contributions from anyone: experts to novices, remote sensing pros to those who want to improve their skills. 





The online tool to analyse the imagery is the Tomnod Disaster Mapper.





 

The mapper presents pre- and post-disaster imagery and invites you to identify buildings that have suffered damage or areas affected by lateral spreading, sandboils or landsliding. This tool runs in your web browser and accepts contributions from anyone: experts to novices, remote sensing pros to those who want to improve their skills.





There are just a few weeks remaining in this crowdsourced mapping project so please, help out now.  To participate, visit http://tomnod.com/geocan/?group=3.

Thanks!



_____________________________

Peter R Wood

president@nzsee.org.nz


New Zealand Society for Earthquake Engineering




Visit the NSGS website at http://www.nzgs.org/

 

USGS & xkcd Tracking Earthquakes via Twitter

The U.S. Geological Survey and xkcd are both looking to twitter for earthquake detection.

U.S. Geological Survey: Twitter Earthquake Detector (TED) The U.S. Geological Survey is using funds from the American Recovery and Reinvestment Act to support a student who’s investigating social Internet technologies as a way to quickly gather information about recent earthquakes. In this exploratory effort, the USGS is developing a system that gathers real-time, earthquake-related messages from the social networking site Twitter and applies place, time, and key word filtering to gather geo-located accounts of shaking. This approach provides rapid first-impression narratives and, potentially, photos from people at the hazard’s location. The potential for earthquake detection in populated but sparsely seismicly-instrumented regions is also being investigated. Social Internet technologies are providing the general public with anecdotal earthquake hazard information before scientific information has been published from authoritative sources. People local to an event are able to publish information via these technologies within seconds of their occurrence. In contrast, depending on the location of the earthquake, scientific alerts can take between 2 to 20 minutes. By adopting and embracing these new technologies, the USGS potentially can augment its earthquake response products and the delivery of hazard information. For more information on this project, please e-mail USGSted@usgs.gov or follow @USGSted on Twitter. Read more information about the USGS Earthquake Program.



xkcd.com
xkcd.com

Google - Japan 2011 Earthquake - Person Finder

If you've heard from friends or family who are safe, you can share the good news through the Google Person Finder.

The Disaster Blog

Tomnod - The Crowdsourcing Company Presents The Disaster Blog
There are a lot of people who want to help our friends in Japan and all others who have been touched by the recent disaster. Financial donations are one way to help, but it's not an option for everyone. This leaves a lot of good people who are short on money and long on time, feeling even worse. Here at Tomnod we want to provide ways for you to help by providing information instead of money.

We will post articles and information here and let you know how you can help by contributing a little time online building answers to the big questions we all have.

  • How bad is it?
  • Who will be affected?
  • Where are the people who need the most help?
  • What can I do?



If you find something you'd like us to share here, feel free to email me at katie@tomnod.com.