Video Tragedy Wasior 4 October 2010 8:30Am WEST PAPUA
This video taken from amatir camera with durations 4:23Am.
Flash Flood Potential Flooding Wasior West Papua Phase 2 Supplementary Wasior lurk. Flash floods hit potential return Wasior District, West Papua. Residents asked to keep vigilant because the geological structure in this region has a steep slope to the steep topography, between 36-70 degrees. Floods in West Papua Wasior Tsunami like waves crashing down houses in its path and took hundreds of casualties. See video flood Wasior wondema bay in West Papua.
The slope was mainly in the region upstream to the foot of the mountains with rock geology on the surface of a thin and weathered. This warning is reported by the Head of Geological Agency, Ministry of Energy and Mineral Resources R Sukhyar VIVAnews from the site quoted the ministry, Saturday, October 23, 2010. "People are still living in disaster areas for maintaining vigilance during heavy rainfall and a long rainy season is due to flash floods occur when the aftershocks are still possible in the coming months still met extreme rainfall, says Sukhyar.
Sukhyar also asked the public be aware if there is reduction in river flow rates, because it is one of the characteristics of damming a river channel in the region over the mountains. Flash floods hit Wasior on October 4, 2010 Wondarma Bay District, West Papua province hit by flash floods natural disaster. The team collected data Flash Flood Disaster Emergency Response Agency Wasior Geological mention, geological conditions affected area, morphology Wandiboy Mountains generally have a steep slope and steep and narrow coastal plain that extends from north to south.
In addition, the type of rock along Highlands Wondiboy old age and homogeneous, and a thin layer of lapuknya. Metamorphic rocks such as rock genes (gneis) that are easily crushed quartz and rock is easily broken. Geological structures that develop a fault (fault) that extends from north to south at the summit and western foothills. The existence of these faults resulted in the formation of regions (zones) that are vulnerable to landslides crushed by the rain and earthquake shocks. Note also the principal cause of flooding Bandang Wasior West Papua is a high rainfall and long. Rainfall last ten hours before the event reached 179 mm. Rainfall conditions are far above normal (extreme) from an average of 200 mm per month.
Extreme rainfall-triggered landslides in the area Iongsoran steep slopes and drag the trees, then reworked the material is flowing into the river valley groove meandering experience obstacles and damming occurs. Reworked material consisting of water, loose rock, tree and animal to stem the flow of rivers in some parts. Then heavy rains caused dam formed not hold the load finally collapsed. In the course of material flowing downward increasingly eroded and dragged rocks in its path and pepohanan that grew along the edge of the river flow. In the end, the volume of debris flow material expands, causing flash floods. The flow of debris on steep terrain, moving very fast and have great power erosion, whereas in flat areas the flow is slowed down and spread wide.
Energy or momentum of the flow of material destruction in the plain is very large, although its speed slowed down but because of the mass of material involved is very large. As a result of anything in front of it will be swept downstream or beach. Flood Affected Areas of West Papua Wasior. Areas affected are generally located on the plains close to the watershed There are 8 (eight) watersheds that experienced flash floods, ie from north to south: Maemari River, Rakwa, Mom, Anggris, Manggurai, Iriati, Wondamawi I, and River ISEI.
The occurrence of flash floods in 8 river above simultaneously related to the character of the factors of geology, slope steepness, and triggering rainfall are the same (homogeneous). The total affected area about 12.5 km2 and the volume of material deposited in coastal lowlands around 12.5 million m3. This resulted in flash flood disaster fatalities (153 people died and 146 people missing) and injuries (310 people), public facilities damaged electricity network; drinking water networks, bridges, highways, ports, markets, hospitals, offices, and shops ), and displacement within and outside the Bay County Wondama reached 4625 people. vivanews.com
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