All posts by Roya

Presenting at AGU fall meeting 2016 (12-16 Dec)

One of our PHD students , Roya Olyazadeh attended AGU fall meeting 2016 in San Fransisco, USA. AGU Fall meeting is the largest worldwide conference in the geophysics with more than 20,000 oral and poster presentations and 24,000 attendees (

We have presented a poster at Technology-Enhanced Teaching in Geosciences session: ED51H-0849 “Testing RISKGIS Platform with Students to Improve Learning and Teaching Skills ” by Roya Olyazadeh , Zar Chi Aye , Michel Jaboyedoff, and Marc-Henri Derron

Rapid Offline-Online Landslide Mapping tool (ROOl Map)

A prototype using open-source WebGIS technologies has been implemented to make data on hazard impacts, such as damaged infrastructure, landslides or flooding events available to authorities and the general public. This mobile application has been designed as a low-cost, rapid and participatory method for recording impacts from hazard events and includes geolocation (GPS data and Internet), visualize the map, drawing and adding a comment or feedback by public participation. It is possible to record such events and upload them through a server, where internet connections is available. This application can be accessed by a mobile phone (Android or iPhone) or a tablet as hybrid version for both offline and online versions.

Based on recent visit to Nepal, internet is available through mobile network however accessibility to the server was not easy. For this reason, an offline mobile application has been implemented to improve the lack of internet in rural area. This offline version has an interactive-offline map with satellites image added to improve the visibility and mapping landslides. After geolocation, the user can start mapping and save them into Geojson text file that can be easily uploaded to the server whenever internet is available. This prototype would be specifically targeted at conducting an assessment of landslides within a predetermined area to assess land use characteristics such as roads, forest area, rivers.

Following videos show the process of this offline-online landslide mapping tool. The area selected for this project is close to Pokhara, Nepal where so many landslides have been activated or reactivated after the last monsoon. More than 60 landslides during two days of field trips has been recorded.


Video 1: Offline Landslide Mapping tool: A case study from Nepal

Video 2: Online Landslide mapping tool: Uploading offline data into system

Video 3: Online Landslide Mapping Tool: Tutorial

Nepal Field Trip!

UNIL RISK Group were in Nepal for two weeks to involve in different activities.

The first purpose was to present our works at FIG workshop “International workshop on post 2015 Nepal Earthquake. This workshop is organized by International Federation of Surveyors (FIG), International Society of Photogrammetry and Remote Sensing (ISPRS), Nepal Institution of Chartered Surveyors (NICS) and Nepal Remote Sensing and Photogrammetric Society (NRSPS).
Main objective of this event was to enhance the international expertise for professional capacity in contributing in disaster risk reduction for current situation in Nepal. For More information:


The second activity was to continue our previous study EPIC on land use trends, road construction and landslides by using LIDAR. More than 6 sites were scanned during one week of field works.

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The third goal was to test our new offline-online landslide mapping android application in the Phewa Watershed near Pokhara, Nepal. This area has not been affected by April 2015 earthquake, however the last monsoon caused more than 60 landslides and 9 casualties. The application has been tested successfully and more than 60 landslides were mapped during two days of field trip.



Finally there was also a field trip to Mustang, Jomsom area to explore the possibility of a new project in collaboration with UNEP regarding landslides and avalanches in that area.

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FOSS4G 2014

FOSS4G conference is the largest gathering for Free and Open Source Software for Geospatial techologies. It is hosted by OSGeo since 2006 and has been held all over the world and drew attendees from over 40 countries. This year, the conference was organized in Portland, Oregon, USA and it aims to held in Seoul, Korea for the year 2015 (more information can be found on: and )

CHANGES framework is an ITN European project entitled: “Changing Hydro-meteorological Risks as Analyzed by a New Generation of European Scientists” (A Marie Curie Initial Training Network – Jan 2011 to Dec 2014). Within the CHANGES project, it is aimed to have a spatial decision support system to analyze the current and future risk scenarios and help the decision makers in selecting the best risk reduction alternative for the current and future years. The system is to be implemented by using open source Geospatial software and it is planned to make it free for the potential users.

The reason to attend this conference was to gain the insights on the new works, updates and technologies supported by OSGeo. The technologies that are currently using to develop this web based platform of CHANGES project, are recognized by OSGeo: OpenGeo, Postgres and PostGIS, Geoserver and possibility use of GeoNode.

It is possible to watch the keynote speakers’ talks and other sessions online at:

PDXPUG Day 2014 on 6th of September 2014 was held at Portland State University:

The presentations related to Postgres, an open source relational database management system, can be watched online here:

The PhD student of the CHANGES project: Roya Olyazadeh, has attended the conference as a volunteer to help organizing the conference and she has been called “the travel Volunteer” (The farthest distance traveled by the volunteers was from University of Lausanne, Switzerland.)

FOSS4G 2014
Oregon Convention Center + American Lunch Box


CHANGES-SDSS meeting in Lausanne on 18-22 August 2014

One of the monthly meeting within the CHANGES project for development of a Spatial Decision Support system (SDSS)

The purpose of these meetings is to present the current results of each components of the system and synchronize the activities within the five members of group.

In the framework of CHANGES Project a spatial decision support system is under development with the aim to analyze the effect of risk reduction planning alternatives on reducing the risk now and in the future, and support decision makers in selecting the best alternatives. The interface based on open source software tools should be able to analyze risk scenarios that can be used in disaster response planning and in risk reduction strategies. These interfaces will be designed user-friendly to make hazard and risk information better accessible and to support the interpretation of this information by additional features for analysis. [more information:]