2. Self-introduction
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.
'Where did you contribute to OpenStreetMap? ' http://yosmhm.neis-one.org/?ikiya
3. Chapter 1
The Nature of Fukushima
and
Mapping Before the Disaster
Dawn on the beach. Photo : Before the disaster / Soma city,Fukushima
20. Last March,
a huge earthquake and tsunami
hit the region,causing major damage.
A nuclear accident also occurred.
Fukushima
21. These photos were taken from the same spot.
(Before the disaster)
(After the disaster)
You can see the remains of the yellow center line
and the foot path in the bottom picture
22. These photos were taken from the same spot.
(Before the disaster)
(After the disaster)
The vast pine forest was washed away in the tsunami.
23. 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
24. A lot of mappers edited the Tohoku, Japan OSM
after the earthquake.
http://wiki.openstreetmap.org/wiki/2011_Sendai_earthquake_and_tsunami
25. I am deeply grateful for all the support
that has come from other regions.
Tsunami damage area
Sendai City, Miyagi
26. 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 much
as “a Mapper”.
http://www.itoworld.com/static/openstreetmap_tools/osm_mapper.html
27. I think Tsunamis are not mere waves .
They are “Giant Walls of Pressure”.
Photo : After the disaster / Iwaki city,Fukushima
28. The tsunami destroyed everything
and the receding wave carried
much of the debris out to sea.
Photo : After the disaster / Iwaki city,Fukushima
29. This is some of the debris
that has been collected.
Photo : After the disaster / Iwaki city,Fukushima
35. 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.
Photo : After the disaster / Iwaki city,Fukushima
36. It was not until this year that I could at last
set foot on the now-deserted coast.
Drawing maps brings back memorise of those places.
38. A survey by GSI(Geospatial Information Authority of Japan)
has revealed that land in the Tohoku region moved
to the south-east in the earthquake.
Ishinomaki City in Miyagi Prefecture moved up to
5.3meters.
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
39. 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.
41. Comparison at the southern tip of the Breakwater
4m
May 2012 logs
Comparison of GPS logs taken
before and after the earthquake
show an eastward movement of
approximately 4m.
Sep 2008 logs
'Restroom buildings'
'Restroom buildings'
Logs of taken from
the restroom buildings
also appear to show movement.
42. Comparison at the Circular stage on the beach
3m
Comparison of GPS logs taken
before and after the earthquake
show an eastward movement of
approximately 3m.
3m
43. 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 to
confirm the movement of the earth's crust
with a handheld GPS under the right circumstances.
45. A nuclear accident followed the earthquake and tsunami.
Many mappers mapped the Fukushima nuclear power plant.
46. 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.
Photo : After the disaster / Iwaki city,Fukushima
47. About one month after the accident
I decided to map the radiation levels in Fukushima
as a private citizen.
Radiation Mapping
48. First,
I set several waypoints on my GPS
and recorded the levels with a Geiger Counter.
59. Which part of this map draws your attention?
Yonezawa City
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.
65. “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.”
66. But the necessity of providing data for OSM
made me start mapping the coast again.
67. 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.
Bing coverage analyser showing Fukushima area.
http://ant.dev.openstreetmap.org/bingimageanalyzer/?lat=-12&zoom=1
68. From this experience, I realized that
OSM teaches us many things
and gives us many things.
Thank you for OSM.
69. Thank you !
State of the Map 2012
Tokyo,Japan,September 2012
