fukushima mapping before and after the disaster

State of the Map 2012Tokyo,Japan,September 2012

Fukushima mapping Before and after the disaster

Ikiya

'Where did you contribute to OpenStreetMap? ' http://yosmhm.neis-one.org/?ikiya

I'm Ikiya.I live in Fukushima, Japan.I map Fukushima and East Japan.I've mapped Asia, the Middle East, Haiti, Christchurch, and other countris.Sorry, my English is not so fluent.

Self-introduction

Chapter 1

The Nature of Fukushimaand

Mapping Before the Disaster

Photo : Before the disaster / Soma city,FukushimaDawn on the beach.Dawn on the beach.

© OpenStreetMap contributors, CC BY-SA

I live in Fukushima city.Fukushima is 250kms north of Tokyo.

Tokyo

Fukushima

Japan

About 2,000,000 people live in the Fukushima area.

Fukushima city


This is Fukushima City.

Fukushima City is the prefectural capital.280,000 people live in Fukushima City.

I love Fukushima's nature and coastlines.I love Fukushima's nature and coastlines.

Photo : Before the disaster / Soma city,Fukushima

The morning sun.The morning sun.

The coastline area was inhabited by many people.The coastline area was inhabited by many people.

Photo : Before the disaster / Soma city,FukushimaPhoto : Before the disaster / Soma city,Fukushima

Fukushima Prefecture is rich in green and nature.Fukushima Prefecture is rich in green and nature.

Sunset.

I loved to visit in every season.I loved to visit in every season.

These are my GPS Logs in the Fukushima area.

We map towns in Fukushima.

Photo : Fukushima cityPhoto : Fukushima city

We map highways in Fukushima.We map highways in Fukushima.

Photo : Before the disaster / Soma city,FukushimaPhoto : Before the disaster / Soma city,Fukushima

We map Fukushima coastlines.We map Fukushima coastlines.

Photo : Before the disaster / Soma city,Fukushima

The Fukushima coastline is 130km long.

130kmWe mapped the Fukushima coastline

before the Disaster.

These are These are mapping GPS logsmapping GPS logs..

Chapter 2

Tohoku, Japan Earthquake, Tsunami

Fukushima

Last March, Last March, a huge earthquake and tsunamia huge earthquake and tsunami

hit the region,causing major damage.hit the region,causing major damage.A nuclear accident also occurred.A nuclear accident also occurred.

These photos were taken from the same spot.These photos were taken from the same spot.

You can see the remains of the yellow center line You can see the remains of the yellow center line and the foot path in the bottom pictureand the foot path in the bottom picture

(Before the disaster)

(After the disaster)

These photos were taken from the same spot. These photos were taken from the same spot.

(Before the disaster)

(After the disaster)

The vast pine forest was washed away in the tsunami.The vast pine forest was washed away in the tsunami.

After the disaster Japan had a lot of support from around the world.

Thank you very much for all your kind support.

Photo : After the disaster / Iwaki city,Fukushima

A lot of mappers edited the Tohoku, Japan OSMafter the earthquake.

http://wiki.openstreetmap.org/wiki/2011_Sendai_earthquake_and_tsunami

Tsunami damage areaSendai City, Miyagi

I am deeply grateful for all the support that has come from other regions.

Thank you so much for contributing.

I have always been interested in crisis mapping.However becoming a disaster victim myself has made me realise that I can only do so muchas “a Mapper”.

http://www.itoworld.com/static/openstreetmap_tools/osm_mapper.html

I think Tsunamis are not mere waves .They are “Giant Walls of Pressure”.


The tsunami destroyed everything and the receding wave carried much of the debris out to sea.


This is some of the debris that has been collected.


This sea side camping ground was washed away.

This area I spent several years mapping has allbut disappeared.

All houses,highways were washed away.

These GPS logs are full of memories and people's lives before the disaster.

I hope they can be used as the region rebuilds in the future.

Chapter 3

Mapping after the disaster

These are mapping GPS logs after the disaster.

Fukushima I Fukushima I Nuclear Power PlantNuclear Power Plant

20km 20km evacuation zoneevacuation zone


In the year following the disaster, I didn't visit or map the coastlines I had visited so often in the past.I was scared, but I was also grieving.


It was not until this year that I could at lastset foot on the now-deserted coast.Drawing maps brings back memorise of those places.

Movement of the Earth's crust in the Earthuake

Geospatial Information Authority of Japan(GSI)http://www.gsi.go.jp/chibankansi/chikakukansi_tohoku2.html”平成23年（2011年）東北地方太平洋沖地震に伴う地殻変動について”国土地理院　平成23年3月19日発表

A survey by GSI(Geospatial Information Authority of Japan) has revealed that land in the Tohoku region movedto the south-east in the earthquake.

Ishinomaki City in Miyagi Prefecture moved up to5.3meters.

I compared data taken on my handheld GPS before the earthquake to that taken after the earthquake

to determine if the earth's crust had moved.The GPS model used was the same in both cases.

6km-longBreakwater

Circular stage on the beach

I compared data two places.


Comparison of GPS logs takenbefore and after the earthquakeshow an eastward movement ofapproximately 4m.

Comparison at the southern tip of the Breakwater

4m

Sep 2008 logs

May 2012 logs

Logs of taken from the restroom buildingsalso appear to show movement.

'Restroom buildings'

'Restroom buildings'

3m

3m Comparison at the Circular stage on the beach

Comparison of GPS logs takenbefore and after the earthquakeshow an eastward movement ofapproximately 3m.

Although comparison of data taken by a commercial GPS and the handheld GPS showed the data from the latter to be less accurate, I realised it was possible toconfirm the movement of the earth's crust with a handheld GPS under the right circumstances.

Chapter 4

Nuclear Disaster

A nuclear accident followed the earthquake and tsunami.Many mappers mapped the Fukushima nuclear power plant.

Following the accident citizens were not made aware of the distribution of radiation.

After the accident, measurement and release of radiation data by the government was too slow.


Radiation Mapping

About one month after the accidentI decided to map the radiation levels in Fukushima

as a private citizen.

First, I set several waypoints on my GPSand recorded the levels with a Geiger Counter.

Radiation Level Memos

Waypoints Number + Radiation Level


Radiation Map


Next, I thought that in order to widen the mapping area,I used a GPS ,Geiger Counter and IC recorderand mapped with my car. (Voice mapping)

I recorded waypoints and radiation levels by voice.

I recorded...

and recorded...

and recorded.

CSV Data

Last summerI recorded7,000 waypointsover 2,400km.



Which part of this map draws your attention?


Many of you would answer “The red area”.The area that draws my attention is this blue area over Yonezawa.To my relief, this showed that area within 20km of Fukushima City was not contaminated in the accident.The focus of society has been on the hotspots.However, I think we should focus more on which areas are safe.

Which part of this map draws your attention?

Yonezawa City

Use of OSM in Radiation Level Map

Web mapping sites such as Google and Yahooonly show detailed maps for the areas in blue.

The red areas signify the evacuation zones(～August,2012), which were of great concernto citizens.

However, there were almost no detailed mapof these areas.Even now, these are insufficient detailed mapsof this area.

I believe OpenStreetMap can be used toeffectively create detailed maps for thesered areas. © OpenStreetMap contributors, CC BY-SA

Fukushima I Fukushima I Nuclear Power PlantNuclear Power Plant

20km 20km evacuation zoneevacuation zone

Now, the number of measurement points has increased and the governmentis releasing substantial amounts of reliable data.We are now focusing on even more precise data.


In order to gather this precise data,we have been measuring the radiation on foot using new equipment with data-saving functions.


Chapter 5

Thank you for OSM.

“In the year following the disaster, I didn't visit or map the coastlines I had visited so often in the past.I was scared,but I was also grieving.”

But the necessity of providing data for OSM made me start mapping the coast again.

Bing coverage analyser showing Fukushima area.http://ant.dev.openstreetmap.org/bingimageanalyzer/?lat=-12&zoom=1

Last year, When I saw aerial images from Bing taken after the earthquake,I knew exactly which areas I had to go to.I at last made my way to those places this year.

From this experience, I realized that OSM teaches us many things

and gives us many things.

Thank you for OSM.

Thank you !

State of the Map 2012Tokyo,Japan,September 2012

fukushima mapping before and after the disaster

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