TY - JOUR
T1 - Flood and substance transportation analysis using satellite elevation data
T2 - A case study in Dhaka city, Bangladesh
AU - Hashimoto, Masakazu
AU - Yoneyama, Nozomu
AU - Kawaike, Kenji
AU - Deguchi, Tomonori
AU - Hossain, Mohammed Abed
AU - Nakagawa, Hajime
N1 - Funding Information:
This study was funded by the JST/JICA SATREPS Program on Disaster Prevention/Mitigation Measures against Floods and Storm Surges in Bangladesh (PI: Dr. H. Nakagawa), the Association for Disaster Prevention Research, and the Future Development Funding Program of Kyoto University Research Coordination Alliance. In addition, this research was greatly supported by researchers from the Bangladesh University of Engineering and Technology (BUET) and Survey of Bangladesh (SOB). The AW3D elevation data were obtained from JAXA.
Publisher Copyright:
© 2018, Fuji Technology Press. All rights reserved.
PY - 2018/10
Y1 - 2018/10
N2 - This study investigated the vertical accuracy of satellite elevation data and its effect on flood and substance transportation analysis by using a two-dimensional flood simulation model. SRTM, AW3D, and ASTER GDEM satellite elevation data for East Dhaka, Bangladesh were used for evaluating the vertical accuracy and conducting numerical analyses. A case study in 2007 was simulated for the flooding analysis. The results showed that AW3D had the highest applicability because its vertical accuracy for low-lying areas was better than that of the other products. According to the differences in the flood extent of each satellite elevation data, the simulation results of the substance transportation analysis showed different spreading conditions. Furthermore, differences in the flood velocity and direction affected the distribution of the deposited substance.
AB - This study investigated the vertical accuracy of satellite elevation data and its effect on flood and substance transportation analysis by using a two-dimensional flood simulation model. SRTM, AW3D, and ASTER GDEM satellite elevation data for East Dhaka, Bangladesh were used for evaluating the vertical accuracy and conducting numerical analyses. A case study in 2007 was simulated for the flooding analysis. The results showed that AW3D had the highest applicability because its vertical accuracy for low-lying areas was better than that of the other products. According to the differences in the flood extent of each satellite elevation data, the simulation results of the substance transportation analysis showed different spreading conditions. Furthermore, differences in the flood velocity and direction affected the distribution of the deposited substance.
KW - DEM
KW - Flood analysis
KW - Substance transportation analysis
KW - Vertical accuracy
UR - http://www.scopus.com/inward/record.url?scp=85055168542&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055168542&partnerID=8YFLogxK
U2 - 10.20965/jdr.2018.p0967
DO - 10.20965/jdr.2018.p0967
M3 - Article
AN - SCOPUS:85055168542
SN - 1881-2473
VL - 13
SP - 967
EP - 977
JO - Journal of Disaster Research
JF - Journal of Disaster Research
IS - 5
ER -
