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Fred Booker - One of the best experts on this subject based on the ideXlab platform.

  • Evolution of overland flow after a severe forest Fire, Point Reyes, California
    Catena, 2008
    Co-Authors: Yuichi Onda, W. E. Dietrich, Fred Booker
    Abstract:

    Forest Fires on granitic soils often increase overland flow and erosion. Runoff generation was monitored on a small hillslope plot on Mt. Vision near Point Reyes Peninsula, California, after it had been burned by a wildFire on October 3, 1995. After the Fire, the ground surface was covered with up to 2 cm of ash, which overlaid a 5-20 cm thick hydrophobic (water repellent) soil layer. We used nine recording tensiometers to monitor soil-water potentials during infiltration and runoff. Surface-runoff rates were determined by diverting the flow into a collection tank. The subsurface flow through the upper 6 cm of soil was collected and measured in a second tank. The surface runoff was diverted to a tank in order to record its rate. The initial intense rainfall infiltrated into the base of the ash-bed; here, the hydrophobicity limited deeper penetration and led to both subsurface and shallow saturation overland flow. The preferential flow paths through the ash layer contributed to deeper water penetration. As the ash was eroded and consolidated with successive rainstorms, the preferential flow paths clogged, the infiltration capacity reduced, thus preventing the storage of shallow permeable soil; therefore, the runoff generation changed to Hortonian overland flow. Correspondingly, the runoff ratio increased from approximately 0.2 during the early storms to 0.8 during intense rain bursts. These results suggest that runoff mechanisms evolve simultaneously with the eroding soil surface. © 2007 Elsevier B.V. All rights reserved.

  • evolution of overland flow after a severe forest Fire Point reyes california
    Catena, 2008
    Co-Authors: Yuichi Onda, W. E. Dietrich, Fred Booker
    Abstract:

    Abstract Forest Fires on granitic soils often increase overland flow and erosion. Runoff generation was monitored on a small hillslope plot on Mt. Vision near Point Reyes Peninsula, California, after it had been burned by a wildFire on October 3, 1995. After the Fire, the ground surface was covered with up to 2 cm of ash, which overlaid a 5–20 cm thick hydrophobic (water repellent) soil layer. We used nine recording tensiometers to monitor soil-water potentials during infiltration and runoff. Surface-runoff rates were determined by diverting the flow into a collection tank. The subsurface flow through the upper 6 cm of soil was collected and measured in a second tank. The surface runoff was diverted to a tank in order to record its rate. The initial intense rainfall infiltrated into the base of the ash-bed; here, the hydrophobicity limited deeper penetration and led to both subsurface and shallow saturation overland flow. The preferential flow paths through the ash layer contributed to deeper water penetration. As the ash was eroded and consolidated with successive rainstorms, the preferential flow paths clogged, the infiltration capacity reduced, thus preventing the storage of shallow permeable soil; therefore, the runoff generation changed to Hortonian overland flow. Correspondingly, the runoff ratio increased from approximately 0.2 during the early storms to 0.8 during intense rain bursts. These results suggest that runoff mechanisms evolve simultaneously with the eroding soil surface.

Yuichi Onda - One of the best experts on this subject based on the ideXlab platform.

  • Evolution of overland flow after a severe forest Fire, Point Reyes, California
    Catena, 2008
    Co-Authors: Yuichi Onda, W. E. Dietrich, Fred Booker
    Abstract:

    Forest Fires on granitic soils often increase overland flow and erosion. Runoff generation was monitored on a small hillslope plot on Mt. Vision near Point Reyes Peninsula, California, after it had been burned by a wildFire on October 3, 1995. After the Fire, the ground surface was covered with up to 2 cm of ash, which overlaid a 5-20 cm thick hydrophobic (water repellent) soil layer. We used nine recording tensiometers to monitor soil-water potentials during infiltration and runoff. Surface-runoff rates were determined by diverting the flow into a collection tank. The subsurface flow through the upper 6 cm of soil was collected and measured in a second tank. The surface runoff was diverted to a tank in order to record its rate. The initial intense rainfall infiltrated into the base of the ash-bed; here, the hydrophobicity limited deeper penetration and led to both subsurface and shallow saturation overland flow. The preferential flow paths through the ash layer contributed to deeper water penetration. As the ash was eroded and consolidated with successive rainstorms, the preferential flow paths clogged, the infiltration capacity reduced, thus preventing the storage of shallow permeable soil; therefore, the runoff generation changed to Hortonian overland flow. Correspondingly, the runoff ratio increased from approximately 0.2 during the early storms to 0.8 during intense rain bursts. These results suggest that runoff mechanisms evolve simultaneously with the eroding soil surface. © 2007 Elsevier B.V. All rights reserved.

  • evolution of overland flow after a severe forest Fire Point reyes california
    Catena, 2008
    Co-Authors: Yuichi Onda, W. E. Dietrich, Fred Booker
    Abstract:

    Abstract Forest Fires on granitic soils often increase overland flow and erosion. Runoff generation was monitored on a small hillslope plot on Mt. Vision near Point Reyes Peninsula, California, after it had been burned by a wildFire on October 3, 1995. After the Fire, the ground surface was covered with up to 2 cm of ash, which overlaid a 5–20 cm thick hydrophobic (water repellent) soil layer. We used nine recording tensiometers to monitor soil-water potentials during infiltration and runoff. Surface-runoff rates were determined by diverting the flow into a collection tank. The subsurface flow through the upper 6 cm of soil was collected and measured in a second tank. The surface runoff was diverted to a tank in order to record its rate. The initial intense rainfall infiltrated into the base of the ash-bed; here, the hydrophobicity limited deeper penetration and led to both subsurface and shallow saturation overland flow. The preferential flow paths through the ash layer contributed to deeper water penetration. As the ash was eroded and consolidated with successive rainstorms, the preferential flow paths clogged, the infiltration capacity reduced, thus preventing the storage of shallow permeable soil; therefore, the runoff generation changed to Hortonian overland flow. Correspondingly, the runoff ratio increased from approximately 0.2 during the early storms to 0.8 during intense rain bursts. These results suggest that runoff mechanisms evolve simultaneously with the eroding soil surface.

W. E. Dietrich - One of the best experts on this subject based on the ideXlab platform.

  • Evolution of overland flow after a severe forest Fire, Point Reyes, California
    Catena, 2008
    Co-Authors: Yuichi Onda, W. E. Dietrich, Fred Booker
    Abstract:

    Forest Fires on granitic soils often increase overland flow and erosion. Runoff generation was monitored on a small hillslope plot on Mt. Vision near Point Reyes Peninsula, California, after it had been burned by a wildFire on October 3, 1995. After the Fire, the ground surface was covered with up to 2 cm of ash, which overlaid a 5-20 cm thick hydrophobic (water repellent) soil layer. We used nine recording tensiometers to monitor soil-water potentials during infiltration and runoff. Surface-runoff rates were determined by diverting the flow into a collection tank. The subsurface flow through the upper 6 cm of soil was collected and measured in a second tank. The surface runoff was diverted to a tank in order to record its rate. The initial intense rainfall infiltrated into the base of the ash-bed; here, the hydrophobicity limited deeper penetration and led to both subsurface and shallow saturation overland flow. The preferential flow paths through the ash layer contributed to deeper water penetration. As the ash was eroded and consolidated with successive rainstorms, the preferential flow paths clogged, the infiltration capacity reduced, thus preventing the storage of shallow permeable soil; therefore, the runoff generation changed to Hortonian overland flow. Correspondingly, the runoff ratio increased from approximately 0.2 during the early storms to 0.8 during intense rain bursts. These results suggest that runoff mechanisms evolve simultaneously with the eroding soil surface. © 2007 Elsevier B.V. All rights reserved.

  • evolution of overland flow after a severe forest Fire Point reyes california
    Catena, 2008
    Co-Authors: Yuichi Onda, W. E. Dietrich, Fred Booker
    Abstract:

    Abstract Forest Fires on granitic soils often increase overland flow and erosion. Runoff generation was monitored on a small hillslope plot on Mt. Vision near Point Reyes Peninsula, California, after it had been burned by a wildFire on October 3, 1995. After the Fire, the ground surface was covered with up to 2 cm of ash, which overlaid a 5–20 cm thick hydrophobic (water repellent) soil layer. We used nine recording tensiometers to monitor soil-water potentials during infiltration and runoff. Surface-runoff rates were determined by diverting the flow into a collection tank. The subsurface flow through the upper 6 cm of soil was collected and measured in a second tank. The surface runoff was diverted to a tank in order to record its rate. The initial intense rainfall infiltrated into the base of the ash-bed; here, the hydrophobicity limited deeper penetration and led to both subsurface and shallow saturation overland flow. The preferential flow paths through the ash layer contributed to deeper water penetration. As the ash was eroded and consolidated with successive rainstorms, the preferential flow paths clogged, the infiltration capacity reduced, thus preventing the storage of shallow permeable soil; therefore, the runoff generation changed to Hortonian overland flow. Correspondingly, the runoff ratio increased from approximately 0.2 during the early storms to 0.8 during intense rain bursts. These results suggest that runoff mechanisms evolve simultaneously with the eroding soil surface.

Yongjin Xu - One of the best experts on this subject based on the ideXlab platform.

  • The research of forest Fire monitoring application
    2010 18th International Conference on Geoinformatics, 2010
    Co-Authors: Yihua Chen, Mingming Zhang, Xin Yang, Yongjin Xu
    Abstract:

    Forest Fires are serious natural disasters around the world, which will devastate forests heavily and cause enormous financial losses. It has great significance for the application research and development of forest Fire monitoring, which improve forecast accuracy of forest Fire warning, prepare for forest Fire prevention, detect Fire Point in time, and extinguish the Fire fast and efficient. The method mentioned in this paper integrates remote sensing, image recognition, GIS, and remote monitoring technology together, based on the video monitoring images and the MODIS remote sensing data to design a real-time, effective forest Fire monitoring system. The coordinates are sent to forest Fireproof GIS when the Fire Point are detected, and then the forest Fireproof GIS can search and calculate all the information necessary for Fireproof decision-making.

  • Geoinformatics - The research of forest Fire monitoring application
    2010 18th International Conference on Geoinformatics, 2010
    Co-Authors: Yihua Chen, Mingming Zhang, Xin Yang, Yongjin Xu
    Abstract:

    Forest Fires are serious natural disasters around the world, which will devastate forests heavily and cause enormous financial losses. It has great significance for the application research and development of forest Fire monitoring, which improve forecast accuracy of forest Fire warning, prepare for forest Fire prevention, detect Fire Point in time, and extinguish the Fire fast and efficient. The method mentioned in this paper integrates remote sensing, image recognition, GIS, and remote monitoring technology together, based on the video monitoring images and the MODIS remote sensing data to design a real-time, effective forest Fire monitoring system. The coordinates are sent to forest Fireproof GIS when the Fire Point are detected, and then the forest Fireproof GIS can search and calculate all the information necessary for Fireproof decision-making.

Wang Xiao-qing - One of the best experts on this subject based on the ideXlab platform.

  • Design and Implementation for Satellite Remote Sensing Forest Fire-Point Monitoring System
    Computer and Modernization, 2020
    Co-Authors: Zeng Wen-ying, Wang Xiao-qing
    Abstract:

    According to the grounding geographic data of 1∶250,000 of Jiangxi Province,using Microsoft Visual Basic 6.0,Microsoft Access 2000,and Microsoft SQL Server 2000 as development tools,using ESRI ArcView software and MapObjects 2.0 component as GIS platform,a satellite remote sensing forest Fire-Point monitoring system is designed and realized,which can be both auto-running and manual-running.The system can auto-scan the satellite remote sensing information,analyze and process them in good time,and by combining with the grounding geographic information,find out the information of Fire-Point and its surroundings.The system can complete Point-locating,edge-locating and area-locating,namely,the system can search the nearest resident spots of village,countryside,county and city from the Fire-Point,compute the nearest road and the geography distance and direction from the Fire-Point,and fast locate the county and the city where Fire-Point belongs to with GIS component.