HR: 1340h
AN: H53C-1261    [Abstracts]
TI: Bed Sediment Characteristics and Sediment Movement in a Sub-arctic Watershed
AU: * Kawka, M A
EM: ftmak@uaf.edu
AF: Department of Mining and Geological Engineering , College of Engineering and Mines P.O. Box 755800, Fairbanks, AK 99775 United States
AU: Johnson, B P
EM: fsbpj@uaf.edu
AF: Civil and Environmental Engineering Department, College of Engineering and Mines P.O. Box 755900, Fairbanks, AK 99775 United States
AU: Toniolo, H A
EM: ffhat@uaf.edu
AF: Water and Environmental Research Center (WERC), College of Engineering and Mines P.O. Box 755860, Fairbanks, AK 99775 United States
AU: Toniolo, H A
EM: ffhat@uaf.edu
AF: Civil and Environmental Engineering Department, College of Engineering and Mines P.O. Box 755900, Fairbanks, AK 99775 United States
AU: Misra, D
EM: ffdm1@uaf.edu
AF: Department of Mining and Geological Engineering , College of Engineering and Mines P.O. Box 755800, Fairbanks, AK 99775 United States
AB: The project on bed sediment characteristics and bed sediment displacement is being conducted in the Caribou-Poker Creeks Research Watershed (CPCRW), which is reserved only for scientific research. The watershed is located about fifty miles northeast of Fairbanks, Alaska. The fieldwork started in the summer of 2003 and was continued during late spring and summer of 2004. The sediment samples were taken from fifteen different locations in five streams: Poker Creek, Caribou Creek and its tributaries (C2, C3, C4). The rocks were analyzed in labs at the University of Alaska Fairbanks. Zingg diagram was used to obtain the stones' shape. The results indicate a high percentage of blades and discs in the rocks analyzed. The particles were returned to their initial locations after they were painted and numbered. The sampling sites were located in seven different groups in the watershed, namely: Caribou, Poker, C2, C3, C4, CB, and weather station. Travel distance was measured during the warm season. Measured displacements, in meters, are in the order of a single digit. The maximum recorded movement was 9.70 m and it was registered in the Poker Creek. Data collection will be continued in the future along the streams to obtain the bed sediment variation.
DE: 1815 Erosion and sedimentation
DE: 1823 Frozen ground
SC: Hydrology [H]
MN: 2004 AGU Fall Meeting