#1235 - Kyrgyz Republic - Exposure Mapping for Seismic Risk Assessment

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Project Details

  • Goal: Seismic risk assessment
  • Author: World Bank GFDRR
  • Requesting organization: World Bank GFDRR / GFZ-Potsdam / CAIAG / Arup
  • Priority: Medium
  • Imagery: Bing

DISASTER RISK REDUCTION

The Kyrgyz Republic is located in a region of high seismic hazard. In addition, the typical buildings in the region are susceptible to damage from seismic hazards (e.g. earthquake ground shaking). The population in the region is therefore exposed to the combination of high seismic hazards and vulnerable building stock. The country is therefore considered to be a region of high seismic risk.

The World Bank is supporting a project whereby a nationwide seismic risk assessment study will be undertaken. A team led by Arup, and including the Bishkek-based Central Asian Institute of Applied Geosciences (CAIAG), and the German Research Centre for Geosciences (GFZ-Potsdam) has been appointed by the World Bank to undertake a nationwide seismic risk assessment study for the Kyrgyz Republic.

This project aims to collect exposure data on buildings and infrastructure, which will be used in seismic risk assessment. The project is held in conjunction with key government agencies and local university departments in Kyrgyz Republic, which will help ground truth the data.

UNIQUE ASPECT

OSM data created from remote mapping will be used in conjunction with unique, ground collected imagery similar to Google StreetView or Mapillary. This project will test the utility of combining OSM with other specialized data needed to produce a hazard risk assessment. The city chosen for this task, Karakol, has ground-collected imagery, but the buildings layer in OSM needs improvement.

TIMELINE

A community mapping event will take place in Bishkek, Kyrgyz Republic, on October 8-9, where local volunteers from universities and government agencies will map assets vulnerable to seismic hazard. Additional analytical work and ground-based assessments are also planned.

Objects to trace

  • Buildings, roads, railways, bridges, residential areas

Created by disruptiveGeo - Updated - Priority: medium

  Instructions

Entities to Map
buildings, roads, railways, bridges
Changeset Comment
Kyrgyz Republic, Seismic risk, World Bank #GFDRR, #OpenDRI, #hotosm-project-1235, source=Bing, May 2013
When saving your work, please leave the default comment but add what you actually mapped, for example "added buildings and a residential road".

Key Elements

The focus of this mapping effort is on infrastructure that could be impacted by earthquakes, primarily buildings and roads. Note that many of the existing buildings should be updated to match the imagery. Where possible, bridges, railways, and residential areas are also useful.

More specific instructions are below.

Thanks to Blake Giradot from HOT for creating a custom screencast reviewing how to map for this task, access the YouTube Video for Task 1235 here

Project Specific Notes

  • Split Task Squares - Once you "Start Mapping" button you will see a link that says "Split" in the Tasking Manager, use it if the task square can not be finished in a reasonable time (15 mins or so).
  • Look at some of the "Green" "Validated" tiles to see what completed mapping looks like
  • The center of the city is most challenging mapping because the building density is so high, try some task squares outside the city center to get started (split task squares as needed).

Buildings

  • Please review and update any existing buildings in the OSM data. Many have errors in position (shifted slightly) or shape, and need to be updated to match the imagery.

  • Please accurately outline all the buildings you can find. The outline should be for the full size of the building even if it is partly covered by trees in the imagery.

  • After drawing the outline, use the 's' key in the web editor to "square" the corners.

  • Many buildings are very close, but do not actually touch each other, try to map them close to each other without letting them connect or share nodes with each other, roads or residential area outlines.

  • In the iD web editor, the first time you map a building you will use the "Building" category and then at the bottom of the list select "Building" again, this is the most generic building tag we can use as we almost never can tell the more specific use of any building from imagery alone.

  • If you have personal knowledge of a building, please add that information to the building, like the name or type of building (hospital, school, gas station, etc)

  • Additional information on the "Building" tag can be found on the OSM Wiki for Buildings

Roads

  • Please map roads and major paths as completely as possible by connecting them to the main road networks where ever possible.

  • Very short segments that do not connect to anything should not be mapped.

  • Short segments of a road or path that you cannot see through the trees but seem very likely to exist should be mapped to keep the road complete

  • Try and map a little beyond your task square so the person who maps the task square next to yours can easily connect them.

  • Always connect roads to other roads where they meet and never end roads on Residential area polygon edges.

  • Additional information on the OSM wiki page for Highways.

General Mapping Notes

  • Be as precise as possible - This takes a little bit of practice, but following a road closely or the outline of a building carefully really makes a difference in the quality of map data produced. Quality is more important than quantity when it comes to mapping. Zooming in close helps.

  • It is ok to "split" task squares - Sometimes a task square will have a lot detailed settlement mapping, if you think it would help to make the task square smaller so the mapping could be finished in a reasonable time, use the "split" link above the task square comment box.

  • Personal knowledge - If you have local knowledge, that is incredibly valuable and any information you are 100% sure of you can add to the object you are mapping. Building names, health facilities, names of roads, etc, are all very valuable and the name= tag can be used to supply that information.

  • Sometimes a task square is already mapped - Sometimes you will find a task square that looks totally mapped or has nothing in it to map. Just double check that it is complete, map anything that was missed, straighten up anything that needs it and then mark it "Done".

  • Invalidated task squares - You might get a notice that a task square was "invalidated" that almost always just means someone found a few more things to map and they did not have time to map them in. No worries, it is part of the process and happens all the time. If you have to stop mapping before you have mapped everything use the "Unlock" link instead of "Done" As long as you are trying to map everything in a task square you feel confident mapping before you mark one "Done" then all is good.

  • Ask questions - if you have questions, please ask, the front page of this HOT Tasking Manager website offers a few ways to ask or if you are at a mapping event, raise your hand and ask.

  • You are making a real difference mapping - Every contribution matters in a real, tangible way. Mapping in not easy but know that your mapping is used by humanitarian organizations around the world every single day.

Imagery

According to the Bing Imagery Analyzer, the imagery for this area dates to May 2013

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