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Radiation dose in citizen's forests

Citizen's Forest, etc. (0.5m above the ground surface)

Final update date August 18, 2020

Measurement details

We measure space γ (gamma) dose of 50cm of the ground surface about citizen's forests.

Measurement period

October 2011-February 2012

About measurement equipment

There are two types of measuring instruments used for measurement.
From October 7, 2011 to December 7, 2011

TCS-172B (made by Hitachi Aloka Medical Corporation)

Detector NaI (TI) scintillation detector

From January 24, 2012 to February 17, 2012

Mr.Ganma A2700 (Clear Pulse)

Detector CsI (TI) scintillation detector

[Measurement status]
Ward name Name of the facility Location Measurement date weather Measurement results (μSv / h) Note 1
Sakae Ward Yokohama Nature Observation Forest Kamigocho, Sakae-ku October 7, 2011 sunny 0.06-0.08
Kanazawa Ward Kamariya Citizen's Kamariyacho, Kanazawa-ku 10/14 sunny 0.07
Totsuka Ward Maioka Hometown Forest Maiokacho, Totsuka-ku 10/14 Warmth


Sakae Ward Araizawa Citizen's Forest Kudencho, Sakae-ku 10/24 Warmth 0.05-0.08
Kanagawa Ward Forest of Toyokenji citizens Mitsuzawanishimachi, Kanagawa-ku 10/24 Warmth 0.05 to 0.06
Midori Ward Kamoihara Citizen's Kamoi, Midori-ku-cho 10/24 Warmth 0.06-0.08
Asahi Ward Oiwake / Yasashi Citizen's Forest Yasashicho, Asahi-ku 11/1 sunny 0.04-0.007
Midori Ward Shinji Citizen's Forest Niiharucho, Midori-ku 11/1 sunny 0.05 to 0.09
Hodogaya Ward Sakaigi Fureai Forest Sakaigihoncho, Hodogaya-ku 11/2 sunny 0.04-0.08
Totsuka Ward Kamiyabe Fureai Forest Kamiyabecho, Totsuka-ku 11/2 sunny 0.04-0.06
Tsurumi Ward Tojio Fureai Forest Higashiterao, Tsurumi-ku 11/2 sunny 0.06 to 0.09
Izumi Ward Izumi no Mori Fureai Forest Okazucho, Izumi-ku 11/7 Warmth 0.04-0.05
Asahi Ward Tsurugamine Fureai Forest Tsurugamine, Asahi-ku 11/7 Warmth 0.04-0.05
Asahi Ward Shirane Fureai Forest Asahikushirane 11/7 Warmth 0.05 to 0.06
Sakae Ward Segami Citizen's Forest Kamigocho, Sakae-ku 12/7 sunny 0.08
Isogo Ward Hitorizawa Citizen's Hitorizawacho, Isogo-ku 12/7 sunny 0.05-0.08
Kanazawa Ward Kanazawa Citizen's Forest Kamariyacho, Kanazawa-ku 12/7 sunny 0.05-0.08
Aoba Ward Teraya Hometown Forest Jikecho, Aoba-ku 2012 1/24 sunny 0.06
Aoba Ward Mogino Fureai Forest Moegino, Aoba-ku 1/24 sunny 0.04
Midori Ward Kamiyama Fureai Forest Kamiyama, Midori-ku-cho 1/24 cloudy snow 0.07
Midori Ward Miho Citizen's Forest Mihocho, Midori-ku 1/24 cloudy snow 0.05
Totsuka Ward a forest of citizens Gumizawa, Totsuka-ku-cho 1/27 sunny 0.05
Totsuka Ward Witrich Forest Matanocho, Totsuka-ku 1/27 sunny 0.05
Sakae Ward Iijima Citizen's Forest Iijima-machi, Sakae-ku 1/27 sunny 0.07
Sakae Ward Kamigo Citizen's Forest Kamigocho, Sakae-ku 1/27 sunny 0.06
Tsurumi Ward Komaokanakago Citizen's Forest 3, Komaoka, Tsurumi-ku 2/2 sunny 0.07
Tsurumi Ward Kabutozuka Fureai Forest 3, Komaoka, Tsurumi-ku 2/2 sunny 0.03
Kohoku Ward Tsunashima Citizen's Forest Tsunashimadai, Kohoku-ku 2/2 sunny 0.09
Kohoku Ward Kumano Shrine Citizen's Forest Okamachi, Kita-ku, Minato-ku, Tarumachi 2/2 sunny 0.05
Kanazawa Ward Sekigaya Citizen's Forest Kamariyanishi, Kanazawa-ku 2/3 sunny 0.04
Kanazawa Ward Shomeiji Citizen's Forest Kanazawa-ku, Kanazawa-cho, Yatsucho 2/3 sunny 0.03
Kanazawa Ward Shibanagahama Ryokuchi 2, Nagahama, Kanazawa-ku 2/3 sunny 0.07
Isogo Ward Mine Citizen's Forest Isogokuminecho 2/3 sunny 0.08
Seya Ward Miyazawa Fureai Forest Miyazawa, Seya-ku-cho 2/9 sunny 0.03
Seya Ward Higashiyama Fureai Forest Miyazawa, Seya-ku-cho 2/9 sunny 0.05
Seya Ward Seya Citizen's Forest Seyacho, Seya-ku, Higashinodai 2/9 sunny 0.05
Asahi Ward Sasanodai Ryokuchi 1, Kanegaya, Asahi-ku 2/9 sunny 0.04
Asahi Ward Futamatagawa New Town Green Space Imajuku, Asahi-ku-cho 2/9 sunny 0.04
Hodogaya Ward Sakuragaokakuchi Sakuragaoka, Hodogaya-ku 2/9 sunny 0.04
Kohoku Ward Kogushi Castle Ruins Citizen's Forest Kozukuecho, Kohoku-ku 2/10 sunny 0.05
Tsurumi Ward Shishigaya Citizen's Forest Shishigaya, Tsurumi-ku-cho 2/10 sunny 0.07
Kanagawa Ward Shirahatanishikuchi Shirahatanishicho, Kanagawa-ku 2/10 sunny 0.06
Asahi Ward Inokoyama Ryokuchi Kawajima-machi, Asahi-ku 2/13 sunny 0.05
Asahi Ward Ichizawa Fureai Forest Ichizawacho, Asahi-ku 2/13 sunny 0.05
Asahi Ward Minamihonjyuku Citizen's Minamihonjukucho, Asahi-ku 2/13 sunny 0.05
Konan Ward Shimonagaya Citizen's Forest Shimonagaya, Konan-ku 2/13 sunny 0.05
Minami Ward 3, Ooka Ryoku 3, Ooka, Minami-ku 2/13 sunny 0.06
Izumi Ward Nakata Fureai Forest Nakadamachi, Izumi-ku 2/17 sunny 0.03
Izumi Ward Koigakubo contact forest 1, Nakataminami, Izumi-ku 2/17 sunny 0.03
Totsuka Ward Tomizukahachiman Ryokuchi Totsukamachi, Totsuka-ku 2/17 sunny 0.03

Note 1 Unit is μSv / h (microsievert / hour)

Explanation of measurement results

The measured value is lower than the target value of the city, 1 mSv (millisievert) per year. (As a unified way of thinking of the city, it is calculated as staying in a citizen's forest for 8 hours a day and 210 days a year, just like schools.)

Measurement results where there is a possibility of becoming a micro spot
Radiation dose in facilities such as citizen's forests

Inquiries to this page

Environmental Planning Bureau Green Up Promotion Section Forest Creation Section

Telephone: 045-671-2624

Telephone: 045-671-2624

Fax: 045-224-6627

Email address: [email protected]

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Page ID: 326-431-552

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