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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...
ASSESSING THE SUITABILITY OF SIMULATED SAR SIGNATURES OF DEBRIS FOR THE USAGE IN DAMAGE DETECTION
SAR simulation debris damage detection texture features
2016/7/28
When disasters strike in urban areas, the most important issue is to direct rescue forces to the most heavily destroyed areas. SAR images, because of their independence from daylight and weather condi...
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. ...
Planetesimals to protoplanets–II. Effect of debris on terrestrial planet formation
methods N-body simulations–methods numerical–Solar system formation–planetary systems formation
2015/12/25
In this paper, we extend our numerical method for simulating terrestrial planet formation to include dynamical friction from the unresolved debris component. In the previous work, we implemented a rub...
Applying Digital Photogrammetry to Spatial Distribution of Debris Variation
Photogrammetry Debris Variation Geographic Information System (GIS)
2015/12/18
This study applies original aerial photographs to reconstruct orthoimages and extract digital terrain model (DTM) for images of various periods. The area of research is located at the Daluowan stream ...
Geophysical surveying of slopes affected by debris flows: the case of S. Felicea Cancello (Caserta, Southern Italy)
debris flow geophysical surveys S. Felice a Cancello
2015/9/17
This paper contains the results of a series of geophysical investigations carried out on the largest debris flow to
have taken place in Tavernole, S. Felice a Cancello (Caserta, Southern Italy). The ...
Turbidity currents and debris flows represent the most prominent processes of sediment transport from the shallow shelf waters into the deep ocean. These gravity driven flows are capable of transporti...
Journey to the Center of the Gyre: The Fate of the Tohoku Tsunami Debris Field
Tohoku Tsunami Debris Field Gyre
2015/7/14
The 9.0 magnitude Tohoku earthquake that struck off the coast of Japan on March 11, 2011, was the fourth largest earthquake in recorded history and the largest ever to hit a densely populated region (...
VALIDATION OF SPOT-5 SATELLITE IMAGERY FOR GEOLOGICAL HAZARD IDENTIFICATION AND RISK ASSESSMENT FOR LANDSLIDES, MUD AND DEBRIS FLOWS IN MATAGALPA, NICARAGUA
Remote Sensing Hazards Developing Countries Geology Landslides Identification Monitoring
2015/5/29
This analysis addresses the suitability and potential for the use of high-resolution SPOT-5 remote imagery for geological hazard identification and risk assessment in Matagalpa, Nicaragua. SPOT-5 prod...
Assessment of coarse woody debris following selective logging in Caspian forests: implications for conservation and management
line intersect method fixed-area plot beech forest
2015/4/24
Information on the amount, distribution, and characteristics of coarse woody debris (CWD) in forest ecosystems is highly demanded by wildlife biologists, fire specialists and ecologists. Owing to its ...
Characteristics of coarse woody debris in successional stages of natural beech (Fagus orientalis) forests of Northern Iran
coarse woody debris Fagus orientalis Lipsky forest succession natural beech forest Northern Iran
2015/3/20
Coarse woody debris (CWD) is an important structural and functional component in forests in Northern Iran. In this study we determine the temporal patterns of CWD in Kheyroud Forests by examining the ...