TAILIEUCHUNG - Báo cáo "Heavy rainfall induced landslides in Bac Kan and Binh Dinh provinces "

Landslides is one ofthe most severe hazard in Vietnam, arnong that a major number of landslides are induced by heavy rainfall The paper deals with heavy rainfall induces shallow landslides at the excavated slopes in Bac Kan province and at the natural slopes in Binh Dinh province. Landslides in Bac Kan can happen when the amount ofrainfall is 180tmn continuously. Landslides of natural slopes in Binh Dinh can only occur when rainfall makes the slopes ahnost saturated. This can happen when the arnouut of rainfall reach over 1260mm. Landslides induced by heavy rainfall also depend on the initial water content. | VNU Journal of Science Earth Sciences 25 2009 1-9 Heavy rainfall induced landslides in Bac Kan and Binh Dinh provinces Do Minh Due College of Science VNƯ Received 09 January 2009 received in revised form 3 February 2009 Abstract. Landslides is one of the most severe hazard in Vietnam among that a major number of landslides are induced by heavy rainfall The paper deals with heavy rainfall induces shallow landslides at the excavated slopes in Bac Kan province and at tile natural slopes in Binh Dinh province. Landslides in Bac Kan can happen when the amount of rainfall is 180mm continuously. Landslides of natural slopes in Binli Dinh can only occur when rainfall makes tile slopes almost saturated. This can happen when the amount of rainfall reach over 1260mm. Landslides induced by heavy rainfall also depend on the initial water content . antecedent rainfall geological settings and plant cover. Therefore rainfall path and critical rainfall can vary in a given range in a place and can vary widely from place to place. Keywords Heavy rainfall Slope Landslide Unsaturated soils. 1. Introduction Landslides and flooding are the most severe geohazards in Vietnam Annually landslides alone cause a damage of nearly 100 millions USD 6 . The serious hazard often takes place during storms or tropical depressions. Storms and landslides had destroyed 448 bridges 789 culverts strongly damaged 6 millions m2 of highway surface millions m3 of soils and rocks had to be cleaned during the period from 1990 to 1995. More seriously landslides along with debris flows can cause severe fatality. As showing in table 1 the hazards of landslides and debris flows are very severe and can occur in all mountainous areas of Vietnam A remarkable situation is that all of them only occurred during heavy rainfall. The ongoing climate changes have the potential to significantly increase the country s risk exposure to geohazards. Extreme weather events induced by climate changes are happening more .

• Báo cáo khoa học
• Heavy rainfall
• earth sciences
• Research
• scientific research
• scientific reports
• Frequency of extreme rainfall
• Heavy rain
• Temporal and spatial distribution
• The characteristics of heavy rainfall
• The central coastal provinces
• Pseudo global warming
• Ensemble simulation
• Weather Research and Forecast
• Dynamic downscaling
• Climate Model Intercomparison Project
• Heavy rainfall forecast
• IFS model
• Heavy rainfall evens forecast skill
• IFS modelat the middle central
• Middle central of Viet nam
• Heavy rainfall in central Viet Nam
• Modification of precipitation analysis
• Precipitation analysis at VNMHA
• Precipitation system
• WRF model
• Satellite data
• Urban flooding forecast
• Generating rainfall data
• Spatial resolutions
• Vietnam Journal of Mechanics
• Betts miller janjic convective parameterization scheme
• H14 31 model to forecast heavy rainfall in Vietnam
• Betts Miller Janjic
• Three rain seasons
• Terrain effect
• Terrain experiment
• Convergence circulation
• Tropical cyclones
• Genetic programming
• Imbalance classification
• Heavy rain classification
• Machine learning methodology
• Model’s functional
• Global warming
• Climate model
• Climate Change
• greenhouse gas concentrations
• reduce emissions
• heat waves
• droughts and heavy rainfall
• species extinctions
• Tạp chí Khoa học
• Khoa học trái đất và môi trường
• Kritsky Menken
• Standard deviation
• Coefficient of skewness
• Intra row spacing
• Weed management in cotton
• South gujarat conditions
• Weed management