- 著者
- 高島 正典 林 春男
- 出版者
- 地域安全学会
- 雑誌
- 地域安全学会論文集 (ISSN:13452088)
- 巻号頁・発行日
- no.2, pp.69-78, 2000-11
- 参考文献数
- 10
- 被引用文献数
- 1
In this paper, the validity of the method,to estimate damaged area using DMSP/OLS (Defense Meteorological Satellite Program/ Optical Linescan System)night-time imagery developed by our research group(Hayashi et al, 2000). OLS mounted on the DMSP satellites captures city lights distribution reflecting extent of human activity. The area shows significant decrease of light intensity after the earthquake compared with before the event is estimated as impacted area in the DMSP method. We compared the actual damage with estimated damaged area of Marmara earthquake in Turkey (1999) and of Hanshin-Awaji earthquake (1995) based on the DMSP method. As a result, it is clarified the DMSP method can detect various kinds of damages rather than only severe housing damages.
1 0 0 0 OA 災害時通信モデルにおける無線アドホックネットワークの性能評価
- 著者
- 行田 弘一 ニューエン ナム ホアン 岡田 和則 滝澤 修
- 出版者
- 地域安全学会
- 雑誌
- 地域安全学会論文集 (ISSN:13452088)
- 巻号頁・発行日
- no.12, pp.1-9, 2010-03
The wireless ad hoc network is expected to be used as an alternative of the existing mobile communication network to make users communicate securely in a so-called emergency when a large-scale disaster occurs. In this paper, we propose a Real City model which is more practical as a user terminal movement model in the emergency case. Then we analyze the performance of wireless ad hoc networks in the Real City model by using the network simulator. From the simulation results, it is clarified that changing die routing protocol attribute value and increasing the number of mobile terminals that contributes to the communication route formation are necessary to improve the ad hoc network performance.
1 0 0 0 OA 計測震度と旧気象庁震度および地震動強さの指標との関係
- 著者
- 翠川 三郎 藤本 一雄 村松 郁栄
- 出版者
- 地域安全学会
- 雑誌
- 地域安全学会論文集 (ISSN:13452088)
- 巻号頁・発行日
- no.1, pp.51-56, 1999-11
- 被引用文献数
- 34
The correlation of the new J.M.A. instrumental seismic intensity with the former J.M.A. Seismic intensity and ground motion parameters is examined. The 215 strong-motion records with the intensity of 0 to 7 are used for the analysis. The instrumental seismic intensity computed from the records agrees well with the former seismic intensity determined from human response or observation of damage. The instrumental intensity shows slightly higher correlation with peak ground velocity than peak ground acceleration, and shows highest correlation with the parameters such as the product of the peak velocity and the peak acceleration.