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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
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Tree-ring dated landslide movements and seismic events in southwestern Montana, USA Tree-ring dated landslide movements and seismic events in southwestern Montana, USA
Because many tree species can live for several centuries or longer (Brown 1996), tree-ring analysis can be a valuable tool to date geomorphic events such as landslides, earthquakes, and avalanches in regions lacking long historical records. Typically, a catastrophic landslide will destroy all trees on the landslide, but trees on slower moving landslides may survive. For example, the...
Authors
Paul E. Carrara, J. Michael O’Neill
Water-budget methods Water-budget methods
A water budget is an accounting of water movement into and out of, and storage change within, some control volume. Universal and adaptable are adjectives that reflect key features of water-budget methods for estimating recharge. The universal concept of mass conservation of water implies that water-budget methods are applicable over any space and time scales (Healy et al., 2007). The...
Authors
Richard W. Healy
Wildlife underpasses on U.S. 64 in North Carolina: integrating management and science objectives Wildlife underpasses on U.S. 64 in North Carolina: integrating management and science objectives
This chapter on wildlife underpasses on U.S. Highway 64 in North Carolina is from a book on highways, wildlife, and habitat connectivity. U.S. 64 is an important route in North Carolina connecting major population centers and highways that underwent a major upgrade from a two-lane rural road to a major highway. New routes were proposed for a large portion of the project (28 miles) to...
Authors
Mark D. Jones, Frank T. van Manen, Travis W. Wilson, David R. Cox
Reducing landslide hazards through federal, state, and local government cooperation: the Seattle, Washington, experience Reducing landslide hazards through federal, state, and local government cooperation: the Seattle, Washington, experience
No abstract available.
Authors
P. L. Gori, Inc. Jane Preuss - Planwest Partners
Interferometric synthetic aperture radar (InSAR) study of coastal wetlands over southeastern Louisiana Interferometric synthetic aperture radar (InSAR) study of coastal wetlands over southeastern Louisiana
No abstract available.
Authors
Zhong Lu, Oh-Ig Kwoun
Mississippi River delta plain, Louisiana coast, and inner shelf Holocene geologic framework, processes, and resources Mississippi River delta plain, Louisiana coast, and inner shelf Holocene geologic framework, processes, and resources
Extending nearly 400 km from Sabine Pass on the Texas-Louisiana border east to the Chandeleur Islands, the Louisiana coastal zone (Fig. 11.1) along the north-central Gulf of Mexico is the southern terminus of the largest drainage basin in North America (>3.3 million km2), which includes the Mississippi River delta plain where approximately 6.2 million kilograms per year of sediment is...
Authors
S. Jeffress Williams, Mark Kulp, Shea Penland, Jack L. Kindinger, James G. Flocks
Vadose water Vadose water
Vadose water is subsurface water between the land surface and the saturated zone below the water table. The vadose (or unsaturated) zone includes soil water, which is immediately available to the biosphere. It acts as a controlling agent in the transmission of water and other substances between various components of the earth system: aquifers, land surface, bodies of water, atmosphere...
Authors
John R. Nimmo
Lichens in northern Michigan Lichens in northern Michigan
No abstract available.
Authors
James P. Bennett
Methodology for an integrative assessment of China's ecological restoration programs Methodology for an integrative assessment of China's ecological restoration programs
While research projects have been conducted to examine the impacts and effectiveness of China's ecological restoration programs, few of them represent integrated, systematic efforts. The objective of this chapter is thus to articulate and outline a methodology for an integrative assessment, which, we believe, should embrace both the environmental and socioeconomic changes and engage...
Authors
R. Yin, D. Rothstein, J. Qi, Shuguang Liu
Quantifying biophysical conditions of herbaceous wetland vegetation in Poyang Lake of coastal China via multi-temporal SAR imagery and in-situ measurements Quantifying biophysical conditions of herbaceous wetland vegetation in Poyang Lake of coastal China via multi-temporal SAR imagery and in-situ measurements
Wetland ecosystems, known as the “kidneys of the earth,” are an important habitat for aquatic fl ora and fauna and provide valuable services and goods for the human beings. The wetlands in Poyang Lake of the Southeast China coastal region are one of the fi rst national natural reserves listed in the Ramsar convention in 1992. Poyang Lake is the largest freshwater lake in China and its...
Authors
L. Yang, H. Sang, H. Lin, J. Chen
Contemporary land use and land cover change in coastal Pearl River delta and its impact on regional climate Contemporary land use and land cover change in coastal Pearl River delta and its impact on regional climate
Land use/land cover (LULC) is one of the most convincing aspects of the global change that has occurred in the terrestrial ecosystem (Meyer and Turner II, 1994; IPCC, 2001). Many changes in LULC refl ect the impacts of human activities on global environment (e.g., Houghton et al., 1999). Change in LULC is also recognized as a main driver affecting the local, regional, and global climate...
Authors
Limin Yang, W. Lin, L. Zhang, H. Lin, D. Du