TY - GEN
T1 - Evaluation of landslide yielding sediments by using multi-temporal high resolution topographies
AU - Tseng, C. M.
AU - Chang, K. J.
AU - Chen, Y. S.
AU - Wang, C. H.
AU - Li, C. C.
N1 - Funding Information:
This work is funded by the Soil and Water Conservation Bureau, Taiwan, R.O.C. and by the grant MOST 107-2625-M-309-003 from the Ministry of Science and Technology, Taiwan, R.O.C.
Publisher Copyright:
© The authors and IGS: All rights reserved, 2019.
PY - 2019
Y1 - 2019
N2 - In this study, we studied and monitored a watershed (Pu-tun-pu-nas) with an area of 7 km2 in southern Taiwan which was seriously affected by the major typhoon Morakot in 2009,. This typhoon brought extreme and long duration rainfall, for instance the cumulated rainfall around the study area was approximately 2,425 mm, and consequently caused severe landslides and debris flows. So after the typhoon Morakot, a large amount of landslide yielding materials had been reactivated resulted in active debris flows during recent years. The purpose of this study is to investigate the sediment budgets related to landslides and debris flows after the typhoon Morakot by using the difference of High Resolution DTM (DoD) method to perform subtraction on the DTMs before and after typhoons. To perform this study we acquired three DTMs generated by the aerial images taken by Unmanned Aerial Vehicle (UAV) and Airborne Digital Sensors (ADS) between 2010 to 2015. The results of this study provides not only geomatics and GIS datasets to monitor the terrassic evolution but also essential geomorphological key information to optimize the hazard mitigation planning.
AB - In this study, we studied and monitored a watershed (Pu-tun-pu-nas) with an area of 7 km2 in southern Taiwan which was seriously affected by the major typhoon Morakot in 2009,. This typhoon brought extreme and long duration rainfall, for instance the cumulated rainfall around the study area was approximately 2,425 mm, and consequently caused severe landslides and debris flows. So after the typhoon Morakot, a large amount of landslide yielding materials had been reactivated resulted in active debris flows during recent years. The purpose of this study is to investigate the sediment budgets related to landslides and debris flows after the typhoon Morakot by using the difference of High Resolution DTM (DoD) method to perform subtraction on the DTMs before and after typhoons. To perform this study we acquired three DTMs generated by the aerial images taken by Unmanned Aerial Vehicle (UAV) and Airborne Digital Sensors (ADS) between 2010 to 2015. The results of this study provides not only geomatics and GIS datasets to monitor the terrassic evolution but also essential geomorphological key information to optimize the hazard mitigation planning.
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U2 - 10.32075/17ECSMGE-2019-0949
DO - 10.32075/17ECSMGE-2019-0949
M3 - Conference contribution
AN - SCOPUS:85111918886
T3 - 17th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2019 - Proceedings
BT - 17th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2019 - Proceedings
A2 - Sigursteinsson, Haraldur
A2 - Erlingsson, Sigurour
A2 - Erlingsson, Sigurour
A2 - Bessason, Bjarni
PB - International Society for Soil Mechanics and Geotechnical Engineering
T2 - 17th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2019
Y2 - 1 September 2019 through 6 September 2019
ER -