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Topographic Change Detection at Select Archeological Sites in Grand Canyon National Park, Arizona, 2007-2010: Usgs Scientific Investigations Report 20 (en Inglés)
Brian D. Collins
(Autor)
·
Skye C. Corbett
(Autor)
·
Bibliogov
· Tapa Blanda
Topographic Change Detection at Select Archeological Sites in Grand Canyon National Park, Arizona, 2007-2010: Usgs Scientific Investigations Report 20 (en Inglés) - Et Al ; Collins, Brian D. ; Corbett, Skye C.
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Reseña del libro "Topographic Change Detection at Select Archeological Sites in Grand Canyon National Park, Arizona, 2007-2010: Usgs Scientific Investigations Report 20 (en Inglés)"
Human occupation in Grand Canyon, Arizona, dates from at least 11,000 years before present to the modern era. For most of this period, the only evidence of human occupation in this iconic landscape is provided by archeological sites. Because of the dynamic nature of this environment, many archeological sites are subject to relatively rapid topographic change. Quantifying the extent, magnitude, and cause of such change is important for monitoring and managing these archeological sites. Such quantification is necessary to help inform the continuing debate on whether and how controlled releases from Glen Canyon Dam, located immediately upstream of Grand Canyon National Park, are affecting site erosion rates, artifact transport, and archeological resource preservation along the Colorado River in Grand Canyon. Although long-term topographic change resulting from a variety of natural processes is inherent in the Grand Canyon region, continued erosion of archeological sites threatens both the archeological resources and our future ability to study evidence of past cultural habitation. Thus, this subject is of considerable interest to National Park Service managers and other stakeholders in the Glen Canyon Dam Adaptive Management Program. Understanding the causes and effects of archeological site erosion requires a knowledge of several factors, including the location, timing, and magnitude of the changes occurring in relation to archeological resources, the rates of change, and the relative contribution of potential causes. These potential causes include sediment depletion associated with managed flows from Glen Canyon Dam, site-specific weather and overland flow patterns, visitor impacts, and long-term regional climate change.
