Allen C Gellis, Ph.D. (Former Employee)
Science and Products
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Modern sediment yield compared to geologic rates of sediment production in a semi-arid basin, New Mexico: Assessing the human impact Modern sediment yield compared to geologic rates of sediment production in a semi-arid basin, New Mexico: Assessing the human impact
In the semi-arid Arroyo Chavez basin of New Mexico, a 2.28 km2 sub-basin of the Rio Puerco, we contrasted short-term rates (3 years) of sediment yield measured with sediment traps and dams with long-term, geologic rates (???10 000 years) of sediment production measured using 10Be. Examination of erosion rates at different time-scales provides the opportunity to contrast the human impact...
Authors
A. C. Gellis, M.J. Pavich, P.R. Bierman, E.M. Clapp, A. Ellevein, S. Aby
Twentieth century arroyo changes in Chaco Culture National Historical Park Twentieth century arroyo changes in Chaco Culture National Historical Park
Chaco Wash arroyo channel changes in the 20th century have become a major concern of the National Park Service. Several archeologic and cultural sites are located in the Chaco Wash corridor; thus, increased erosional activity of Chaco Wash, such as channel incision and increased meandering, may affect these sites. Through field surveys, photogrammetric analyses, and reviews of existing...
Authors
Allen C. Gellis
Developing a geomorphic approach for ranking watersheds for rehabilitation, Zuni Indian Reservation, New Mexico Developing a geomorphic approach for ranking watersheds for rehabilitation, Zuni Indian Reservation, New Mexico
As a result of past erosion problems on the Zuni Indian Reservation in western New Mexico, the US Congress in 1990 authorized the Zuni Tribe to begin a program for watershed rehabilitation. This paper describes an approach to rank the most appropriate watersheds for rehabilitation for the Zuni Reservation. The approach was based on data collected during a 3-year study on geomorphic and
Authors
A. C. Gellis, A. Cheama, S.M. Lalio
Effects of land use on upland erosion, sediment transport, and reservoir sedimentation, Lago Loiza basin, Puerto Rico Effects of land use on upland erosion, sediment transport, and reservoir sedimentation, Lago Loiza basin, Puerto Rico
No abstract available.
Authors
A. C. Gellis, R. M. Webb, W.J. Wolfe, S. C. McIntyre
Characterization and evaluation of channel and hillslope erosion on the Zuni Indian Reservation, New Mexico, 1992-95 Characterization and evaluation of channel and hillslope erosion on the Zuni Indian Reservation, New Mexico, 1992-95
Like many areas of the southwestern United States, the Zuni Indian Reservation, New Mexico, has high rates of erosion, ranging from 95 to greater than 1,430 cubic meters per square kilometer per year. Erosion on the Zuni Indian Reservation includes channel erosion (arroyo incision and channel widening) and hillslope (sheetwash) erosion. The U.S. Geological Survey conducted a 3-year (1992...
Authors
A. C. Gellis
Surface-water and suspended-sediment inflow and outflow for Nutria Reservoir No. 3, Zuni Indian Reservation, New Mexico, March 1994 to September 1995 Surface-water and suspended-sediment inflow and outflow for Nutria Reservoir No. 3, Zuni Indian Reservation, New Mexico, March 1994 to September 1995
Surface-water and suspended-sediment inflow to and outflow from Nutria Reservoir No. 3 on the Zuni Indian Reservation, western New Mexico, were calculated. The period of study was March 3, 1994, to September 30, 1995. Total runoff into Nutria Reservoir No. 3 during the study period was 6,812 acre-feet. During the study period, 24,310 tons of suspended sediment was transported into
Authors
A. C. Gellis
Science and Products
Filter Total Items: 16
No Result Found
Filter Total Items: 66
Modern sediment yield compared to geologic rates of sediment production in a semi-arid basin, New Mexico: Assessing the human impact Modern sediment yield compared to geologic rates of sediment production in a semi-arid basin, New Mexico: Assessing the human impact
In the semi-arid Arroyo Chavez basin of New Mexico, a 2.28 km2 sub-basin of the Rio Puerco, we contrasted short-term rates (3 years) of sediment yield measured with sediment traps and dams with long-term, geologic rates (???10 000 years) of sediment production measured using 10Be. Examination of erosion rates at different time-scales provides the opportunity to contrast the human impact...
Authors
A. C. Gellis, M.J. Pavich, P.R. Bierman, E.M. Clapp, A. Ellevein, S. Aby
Twentieth century arroyo changes in Chaco Culture National Historical Park Twentieth century arroyo changes in Chaco Culture National Historical Park
Chaco Wash arroyo channel changes in the 20th century have become a major concern of the National Park Service. Several archeologic and cultural sites are located in the Chaco Wash corridor; thus, increased erosional activity of Chaco Wash, such as channel incision and increased meandering, may affect these sites. Through field surveys, photogrammetric analyses, and reviews of existing...
Authors
Allen C. Gellis
Developing a geomorphic approach for ranking watersheds for rehabilitation, Zuni Indian Reservation, New Mexico Developing a geomorphic approach for ranking watersheds for rehabilitation, Zuni Indian Reservation, New Mexico
As a result of past erosion problems on the Zuni Indian Reservation in western New Mexico, the US Congress in 1990 authorized the Zuni Tribe to begin a program for watershed rehabilitation. This paper describes an approach to rank the most appropriate watersheds for rehabilitation for the Zuni Reservation. The approach was based on data collected during a 3-year study on geomorphic and
Authors
A. C. Gellis, A. Cheama, S.M. Lalio
Effects of land use on upland erosion, sediment transport, and reservoir sedimentation, Lago Loiza basin, Puerto Rico Effects of land use on upland erosion, sediment transport, and reservoir sedimentation, Lago Loiza basin, Puerto Rico
No abstract available.
Authors
A. C. Gellis, R. M. Webb, W.J. Wolfe, S. C. McIntyre
Characterization and evaluation of channel and hillslope erosion on the Zuni Indian Reservation, New Mexico, 1992-95 Characterization and evaluation of channel and hillslope erosion on the Zuni Indian Reservation, New Mexico, 1992-95
Like many areas of the southwestern United States, the Zuni Indian Reservation, New Mexico, has high rates of erosion, ranging from 95 to greater than 1,430 cubic meters per square kilometer per year. Erosion on the Zuni Indian Reservation includes channel erosion (arroyo incision and channel widening) and hillslope (sheetwash) erosion. The U.S. Geological Survey conducted a 3-year (1992...
Authors
A. C. Gellis
Surface-water and suspended-sediment inflow and outflow for Nutria Reservoir No. 3, Zuni Indian Reservation, New Mexico, March 1994 to September 1995 Surface-water and suspended-sediment inflow and outflow for Nutria Reservoir No. 3, Zuni Indian Reservation, New Mexico, March 1994 to September 1995
Surface-water and suspended-sediment inflow to and outflow from Nutria Reservoir No. 3 on the Zuni Indian Reservation, western New Mexico, were calculated. The period of study was March 3, 1994, to September 30, 1995. Total runoff into Nutria Reservoir No. 3 during the study period was 6,812 acre-feet. During the study period, 24,310 tons of suspended sediment was transported into
Authors
A. C. Gellis