OpenGEM

OpenGEM is the web-based platform which all users will log into from 2013 onwards, to prepare and perform seismic risk calculations, consult maps/tables for their area of interest, perform analyses, access databases and much more.

The OpenGEM platform will thus be powered by the open source OpenQuake software, which enables computation of seismic hazard and risk. Development of OpenQuake is a separate track in the development of the OpenGEM platform, as is the development of the GEM Model (data, methods, standards) by global and regional collaborators through the Global Components projects and Regional Programmes, and the development of the IT infrastructure and user-interfaces. In 2013 the tracks will converge and be integrated into V1 of the OpenGEM platform.

Test-use is foreseen for GEM collaborators and stakeholders. The first component that can be used is OpenQuake through the OATS servive. In 2012 there will be preliminary releases of other components of OpenGEM.

OpenGEM and Data
When at the end of 2013 the first version of OpenGEM will become available, it will include unique global datasets: homogenised global databases on historic and instrumental seismicity, faults, exposure and consequences. Collaborators will have populated the databases to the extent possible, but foresee GEM's stakeholders worldwide to continue to add data.

The OpenGEM platform is being constructed in such a manner that data is not automatically open. Data is usually subjected to licences and there are therefore different ways in which organisations may allow GEM to use it: 1. full use of data without restrictions; users can download and use datasets; 2. providing it as input data to the engine; users will only be able to produce output, but not see the input data; 3. running calculations through the OpenGEM engine, using own data that will not be submitted to OpenGEM.

Use of OpenGEM
We foresee OpenGEM to have different types of users worldwide, with different levels of expertise and data, different restrictions on this data and the model, different requirements as to how they would like to assess seismic risk, and what kind of tools and apps they would expect. The OpenGEM platform will support these needs and will allow users to choose the path they want to follow and the tools they want to use.

Most likely there will be basic and more advanced interfaces, allowing users with different levels of (background) knowledge to find the tools and applications that fit their needs.

• An advanced interface is envisaged to include settings allowing users to explore hazard and risk under different assumptions and make calculations based on GEM or their own data. Furthermore, such an interface will include tools for data (input) preparation, data upload, and a number of applications that are built upon the model.
• A basic interface will allow a user to consult output (maps, graphs, etc.) calculated by GEM or advanced users. It will most likely also include insightful applications, for example related to the house/surroundings where one lives.

The interfaces should be user-friendly and should have interactive (web 2.0) features, catering for sharing and interaction and discussion between OpenGEM users.