"The Asia-Pacific Symposium on New Technologies for Prediction and Mitigation of Sediment Disasters" was held at Sabo-kaikan, Tokyo on Nov. 18-19, 2009. In the symposium, two keynote lectures, 15 oral presentations, and 38 poster presentations were presented. In the second day of the symposium, the panel discussion was held, in which various large scale sediment disasters and counter-measures are shown by panelists from the Asia-Pacific countries. As a result, all the panelists agreed to launch "Sediment Disaster Information Network" to promote further exchange of information or know-how to each other.

DAY1      Nov. 18

10:00 to 10:30

Opening Ceremony

10:30 to 11:30

Key Note Presentations

Recent Development in Sabo technology in Japan

Takahisa Mizuyama (Graduate School of Agriculture, Kyoto University, Japan)

The imprint of landscape memory upon catchment-scale sediment budgets

Gary John Brierley (School of Physical Geography, the University of Auckland, New Zealand)

13:00 to 14:00

Erosion and Sediment Transport

Moderator: Yutaka Gonda (Niigata University, Japan)

Landslides as drivers of hillslope erosion and sediment yield - regional episodes versus single events

Oliver Korup (Swiss Federal Research Institute, Switzerland)

From translation to dispersion: the evolution of sediment slugs into sediment waves in gravel-bed rivers

Thomas E. Lisle (US Forest Service, Pacific Southwest Research Station, Redwood Sciences Laboratory, USA)

Variability in storm magnitude and frequency: a record from lake sediments, New Zealand

Mike Page (Institute of Geological and Nuclear Sciences, New Zealand)

14:20 to 15:20

Landslide, Debris Flow, and Slope Stability I

Moderator: Yasuhiro Shuin (Utsunomiya University, Japan)

Effect of tree root system on soil reinforcement in the mountain forest

Sangjun Im (Department of Forest Sciences, Seoul National University, Korea)

Estimation of flood discharge caused by landslide dam overflow erosion and the applications of countermeasures

Toshio Mori (Sabo Frontier Foundation, Japan)

The features and measures of sediment disasters triggered by Wenchuan earthquake

Guo-qiang OU (Institute of Mountain Hazards and Environment, Chinese Academy of Science, China)

15:40 to 16:40

Landslide, Debris Flow, and Slope Stability II

Moderator: Takahiro Itoh (Ei Koei Co. Ltd., Japan)

Modeling for non-homogeneous Debris flow

An-ping Shu (School of Environment, Beijing Normal University, China)

Study on the function of the debris flow breaker using image analysis

Yutaka Gonda (Graduate School of Agriculture, Niigata University, Japan)

Assessment of landslide susceptibility in relation to low-relief surfaces along ridges using airborne laser scanner data

Shoji Doshida (National Research Institute for Earth Science and Disaster Prevention)

16:50 to 17:50

Poster Session I

18:00 to 20:00

Symposium Dinner

DAY2      November 19, 2009

9:00 to 10:00

Sediment Disaster Management I

Moderator: Michiya Irasawa (Iwate University, Japan)

Disaster risk reduction of dam failure through development of hydrogeotechnical monitoring technique

Djoko Legono (Civil and Environmental Engineering Department, Gadjah Mada University, Indonesia)

Merapi Hazard Mapping in Gendol River Area to Establish Standard Operation Procedure for Warning System (Mt. Merapi Case Study)

Hariyono Utomo (Ministry of Public Works, Indonesia)

Glacial Lake Outburst Flood disaster risk reduction in Nepal

Samjwal Ratna Bajracharya (International Centre for Integrated Mountain Development, Nepal)

10:20 to 11:20

Sediment Disaster Management II

Moderator: Daisuke Higaki (Hirosaki University, Japan)

Challenges on risk management on sediment-related disasters in the Philippines

Evelyn F. Atienza (Department of Public Works and Highways, Philippines)

Rainfall-based debris flow warning practice in Taiwan

Chyan-Deng Jan (National Cheng-Kung University, Taiwan)

Format for collecting disaster data to grasp the significance of sediment related disasters

Nobutomo Osanai (National Institute of Land, Infrastructure and Management, Japan)

11:30 to 12:30

Poster Session II

14:00 to 16: 15

Panel Discussion

Coordinator: Hiroshi Ikeya (SABO Technical Center, Japan)

"Prediction and New Mitigation Technologies for Sediment Disasters"

Panelists

Evelyn F. Atienza (Philippine), Samjwal Ratna Bajracharya (Nepal), Hariyono Utomo (Indonesia)

Sangjun Im (Korea), Chyan-Deng Jan (Twain), Thomas E. Lisle (USA)

Guo-qiang Ou (China), Mike Page (New Zealand)

16:15 to 16:40

Closing Ceremony