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4D-SFM PHOTOGRAMMETRY FOR MONITORING SEDIMENT DYNAMICS IN A DEBRIS-FLOW CATCHMENT: SOFTWARE TESTING AND RESULTS COMPARISON
4D-SfM Photogrammetry Sediment dynamics monitoring Software comparison Debris flow hazard
2018/6/4
In recent years, the combination of Structure-from-Motion (SfM) algorithms and UAV-based aerial images has revolutionised 3D topographic surveys for natural environment monitoring, offering low-cost, ...
Microscopic characterization and formation mechanisms of deepwater sandy-debris-flow and turbidity-current sandstones in a lacustrine basin: a case study in the Yanchang Formation of the Ordos Basin, China
Sandy debris flow Turbidite Ordos Basin Petrology Reservoir properties
2018/4/2
Deep-water deposition is a current issue in sedimentological research. Sandy-debris-flow sandstones and turbidity-current sandstones are the main types of sandstone that are the focus of considerable ...
ANALYSIS OF DEBRIS FLOW BEHAVIOR USING AIRBORNE LIDAR AND IMAGE DATA
Debris Flow LiDAR Digital Surface Model Geomorphologic Change
2016/11/30
The frequency of debris flow events caused by severe rainstorms has increased in Korea. LiDAR provides high-resolution topographical data that can represent the land surface more effectively than othe...
ANALYSIS OF DEBRIS FLOW DISASTER DUE TO HEAVY RAIN BY X-BAND MP RADAR DATA
M X-band MP radar GIS Disaster prevention Web-based
2016/11/30
On August 20 of 2014, Hiroshima City (Japan) was struck by local heavy rain from an autumnal rain front. The resultant debris flow disaster claimed 75 victims and destroyed many buildings. From 1:30 a...
HIGH-RESOLUTION DEBRIS FLOW VOLUME MAPPING WITH UNMANNED AERIAL SYSTEMS (UAS) AND PHOTOGRAMMETRIC TECHNIQUES
Unmanned Aerial Vehicle Structure-from-motion Natural Hazards Volumetric Sediment Budget Digital Terrain Models Event Documentation
2016/7/5
Debris flows cause an average � 30 million damages and 1-2 fatalities every year in Austria. Detailed documentation of their extent and magnitude is essential for understanding, preventing and mitigat...
MULTI-TEMPORAL DEM MATCHING METHOD WITHOUT CONTROL POINTS IN DEBRIS-FLOW AREA
Photogrammetry Geomorphology Multitemporal Change Detection Matching Accuracy Precision
2015/12/29
Detecting the volume change of loose deposit of rock debris accumulated and debris discharged is one of the methods to study debris flow. The volume can be resulted by overlapping multi-temporal DEM. ...
A study of the debris flow activity on the one-stepped channel slope
disaster finite difference element method momentum conservation
2015/3/13
The purpose of this study is to evaluate the behaviour and mechanism of debris flow on various slopes through numerical simulation. The numerical simulation was performed using the Finite Difference E...
Application of Rough Set Feature Selection in the Hazard Assessment of Debris Flow
Attribute Reduction Debris Flow Rough Sets Value Reduction
2011/12/21
In this thesis, the risk of debris flow have been studied. And it used feature selection based on rough set to construct debris flow hazard assessment model.The innovation of this thesis is:the on the...
Activity Degree Evaluation of Glacial Debris Flow along International Karakorum Highway (KKH) Based on Fuzzy Theory
Activity Degree Evaluation Fuzzy Evaluation Method Glacial Debris Flow International Karakorum Highway (KKH)
2011/12/20
The area of international Karakorum Highway(KKH), is an area with dense and frequent glacial debris flow disasters due to unique geology, geomorphology and landform conditions,which connects northern ...
Assessment of debris flow magnitude in small catchments of the lombardy alps: the val gola case study
Val Gola Catchment Debris Flow Magnitude Assessment Frequency Analysis
2013/3/4
Debris flows are among the most destructive of all water-related disasters. They mainly affect mountain areas in a wide range of morpho- climatic environments. Therefore, accurate pre-diction of their...
Rockfall-induced impact force causing a debris flow on a volcanoclastic soil slope: a case study in southern Italy
Rockfall-induced debris flow on a volcanoclastic soil slope southern Italy
2010/10/21
On 10 January 2003, a rockfall of approximately 10 m3 affected a cliff some 25 m high located along the northern slopes of Mt. St. Angelo (Nocera Inferiore, province of Salerno) in the southern Italia...
The efficiency of a risk reduction program for debris-flow disasters – a case study of the Songhe community in Taiwan
The efficiency risk reduction program debris-flow disasters case study the Songhe community Taiwan
2010/10/21
A risk reduction program was developed after debris-flow disaster analysis is conducted using mitigation structures, evacuation measures and community restrained expansion strategy. The risk assessmen...
Critical conditions of bed sediment entrainment due to debris flow
Critical conditions bed sediment entrainment debris flow
2009/12/14
The present study describes entrainment characteristics of bed material into debris flow, based on flume tests, numerical and dimensional analyses. Flume tests are conducted to investigate influences ...
Relations between rainfall and triggering of debris-flow:case study of Cancia(Dolomites,Northeastern Italy)
rainfall triggering debris-flow ase study Cancia
2009/12/11
Debris-flows occurring in the area of Cancia (Dolomites, Northeastern Italy) in recent years have exposed the population to serious risk. In response to the recurring hazard, an alarm and monitoring s...
Observations and modelling of soil slip-debris flow initiation processes in pyroclastic deposits:the Sarno 1998 event
Observations modelling soil slip-debris flow initiation processes pyroclastic deposits
2009/12/11
Pyroclastic soils mantling a wide area of the Campanian Apennines are subjected to recurrent instability phenomena. This study analyses the 5 and 6 May 1998 event which affected the Pizzo d’Alvano (Ca...