2001 Fiscal Year Final Research Report Summary
Estimation on regional intensity of economic activity in Asia : An application of noctural light image by DMSP/OLS
| Project/Area Number |
12650537
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
交通工学・国土計画
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| Research Institution | National Institute for Environmental Studies |
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Principal Investigator |
ICHINOSE Toshiaki National Institute for Environmental Studies Center for Global Environmental Research Senior Research Scientist, 地球環境研究センター, 主任研究員 (30231145)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUMURA Kanichiro The University of Tokyo Institute of Industrial Science, Associate Professor, 生産技術研究所, 助教授 (10333551)
NAKAYA Tomoki Ritsumeikan University Department of Geography, Associate Professor, 文学部, 助教授 (20298722)
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| Project Period (FY) |
2000 – 2001
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| Keywords | DMSP / economic acitivity / urbanization / Asia / remote sensing / China |
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| Research Abstract |
Nowadays many of the urban areas in Asian countries give more priority to economic development than to environmental issues, which leads to the serious environmental deterioration. Information showing developing stages of urban area are generally restricted to published statistics by governments. Especially in Asian developing countries the problem is severe because of the lack of data accumulation. Thus it is difficult to collect cross-sectional urban environmental indicators under a common criteria. Another problem is the credibility of those data; many of the existing data are said to be unreliable. The investigators proposed an alternative method ; it was a method to gather information through remote sensing, and processed it on the Geographic Information System in units of the administrative area.
DMSP (Defensive Meteorological Satellite Program)/OLS (Operational Linescan System) Stable Light Image (SLI) is available to detect low levels of visible - near infrared (VNIR ; 0.4 - 1.1μm) radiance at night by
- clouds illuminated by moonlight
- lights from cities, towns and industrial sites
- gas flares
- ephemeral events such as fires
- lightning illuminated clouds
with the resolution of 30 seconds.
From the enormous archives, the investigators established temporal data sets in Asian region for 1992-3, 1996, 1998 and figured out impacts of
- Asian economic crisis (1997)
- stress in the marginal zone between India and Pakistan
- temporal variability of fisheries in the Japan Sea (the Eastern Sea)
through the analyses on these data sets.
They also compared these data sets summed up in each province in China with some published statistics on socio-economic factors. Intensity of the nocturnal light showed high alterability for GDP and consumption of electricity (per km^2).
The investigators concluded DMSP/OLS SLI was enough applicable to evaluate developing stages of urban area without any published statistics.
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