Thermokarst Evolution and Sediment Transport Study in the Caribou-Poker Creeks Research Watershed, Alaska PDF Download
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Author: Prathap Kodial Publisher: ISBN: Category : Sediment transport Languages : en Pages : 172
Book Description
"The role of sediment transport processes in the development and evolution of cryogenic features like thermo karsts have been overlooked by researchers. The current study is an attempt to better understand sediment transport and associated processes underlying the rapid growth of a thermokarst located in the Caribou-Poker Creeks Research Watershed. Within a short span of two warm summers, the study area has progressed from a hummocky terrain to a well incised channel configuration. Suspended sediment concentration and discharge analyses indicate high sediment flow following precipitation events, which play a major part in the sediment transport process. Mass sediment flows due to cryogenic piping were a result of interflow within the active layer. Fluvio-thermal erosion triggered block failures in the thermokarst. Topographical surveys spanning the two field seasons quantify the upstream erosion rate of more than 3.5 meters per year. Accelerated growth of the thermokarst has made the adjacent areas highly susceptible to secondary geomorphologic features"--Leaf iii.
Author: Prathap Kodial Publisher: ISBN: Category : Sediment transport Languages : en Pages : 172
Book Description
"The role of sediment transport processes in the development and evolution of cryogenic features like thermo karsts have been overlooked by researchers. The current study is an attempt to better understand sediment transport and associated processes underlying the rapid growth of a thermokarst located in the Caribou-Poker Creeks Research Watershed. Within a short span of two warm summers, the study area has progressed from a hummocky terrain to a well incised channel configuration. Suspended sediment concentration and discharge analyses indicate high sediment flow following precipitation events, which play a major part in the sediment transport process. Mass sediment flows due to cryogenic piping were a result of interflow within the active layer. Fluvio-thermal erosion triggered block failures in the thermokarst. Topographical surveys spanning the two field seasons quantify the upstream erosion rate of more than 3.5 meters per year. Accelerated growth of the thermokarst has made the adjacent areas highly susceptible to secondary geomorphologic features"--Leaf iii.
Author: Publisher: ISBN: Category : Caribou Creek Watershed (Alaska) Languages : en Pages : 22
Book Description
Soils of the 41.5 sq miles Caribou-Poker Creeks Research Watershed, central Alaska, have been mapped by standard Soil Conservation Service (USDA) methods. Seven soil series are recognized: Bradway silt loams, Ester silt loams, Karshner silt loams and Saulich silt loams, all underlain by permafrost at shallow depth, make up 27% of the basin area. Olnes silt loams, Gilmore silt loams and Fairplay silt loams, covering 73% of the watershed area, are free from permafrost. Areal distribution of soils is depicted on a photo-mosaic base at 1:31, 680 scale. (Author).
Author: Jerry W. Hilgert Publisher: ISBN: Category : Stream measurements Languages : en Pages : 36
Book Description
Report presenting baseline data from 1979 (Alaska, Caribou-Poker Creeks research watershed) on precipitation, streamflow, occurrence of permafrost, and physical and chemical water quality in the subarctic, tiaga watershed.
Author: Vijay P. Singh Publisher: Springer Science & Business Media ISBN: 9048126428 Category : Science Languages : en Pages : 1301
Book Description
The earth’s cryosphere, which includes snow, glaciers, ice caps, ice sheets, ice shelves, sea ice, river and lake ice, and permafrost, contains about 75% of the earth’s fresh water. It exists at almost all latitudes, from the tropics to the poles, and plays a vital role in controlling the global climate system. It also provides direct visible evidence of the effect of climate change, and, therefore, requires proper understanding of its complex dynamics. This encyclopedia mainly focuses on the various aspects of snow, ice and glaciers, but also covers other cryospheric branches, and provides up-to-date information and basic concepts on relevant topics. It includes alphabetically arranged and professionally written, comprehensive and authoritative academic articles by well-known international experts in individual fields. The encyclopedia contains a broad spectrum of topics, ranging from the atmospheric processes responsible for snow formation; transformation of snow to ice and changes in their properties; classification of ice and glaciers and their worldwide distribution; glaciation and ice ages; glacier dynamics; glacier surface and subsurface characteristics; geomorphic processes and landscape formation; hydrology and sedimentary systems; permafrost degradation; hazards caused by cryospheric changes; and trends of glacier retreat on the global scale along with the impact of climate change. This book can serve as a source of reference at the undergraduate and graduate level and help to better understand snow, ice and glaciers. It will also be an indispensable tool containing specialized literature for geologists, geographers, climatologists, hydrologists, and water resources engineers; as well as for those who are engaged in the practice of agricultural and civil engineering, earth sciences, environmental sciences and engineering, ecosystem management, and other relevant subjects.
Author: Charles W. Slaughter Publisher: ISBN: Category : Caribou-Poker Creeks Watershed Languages : en Pages : 13
Book Description
The Caribou-Poker Creeks Research Watershed was established in 1969 as a site for cooperative, inter-agency investigation of hydrologic and related aspects of a subarctic environemnt. The relatively undisturbed 4O-square-mile drainage basin includes both permafrost-dominated and non-permafrost watersheds, and has a variety of vegetation communities. Initial research is directed to furthering understanding of hydrologic behavior of north-facing (permafrost) and south-facing (non-permafrost) basins in this upland setting. (Author).
Author: Jerry W. Hilgert Publisher: Forgotten Books ISBN: 9780428643065 Category : Business & Economics Languages : en Pages : 44
Book Description
Excerpt from Water Quality and Streamflow in the Caribou-Poker Creeks Research Watershed, Central Alaska, 1979 Baseline data from 1979 are presented on precipitation, streamflow, occurrence of permafrost, and physical and chemical water quality in a subarctic, tiaga watershed. First to third-order streams drain catchments embracing permafrost-underlain and permafrost-free landscapes in the undisturbed research watershed. The data are compared to those from a fourth-order stream impacted by placer mining; streams in the research watershed drain into the fourth-order stream slightly beyond the watershed border. These and subsequent baseline data sets will be used to compare natural conditions in undisturbed streams of the subarctic to conditions in streams impacted by resource management activities and to evaluate the impacts of such activities on stream ecosystems. Keyword: Baseline data, water quality, streamflow, subarctic environment, Alaska (caribou-poker Creeks research watershed). About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Prathap Kodial
Author: Prathap Kodial
Author: 
Author: Jerry W. Hilgert
Author: Vijay P. Singh
Author: William M. Jinkinson
Author: 
Author: Charles W. Slaughter
Author: Fleetwood R. Koutz
Author: Jerry W. Hilgert
Author: Scott Robert Ray