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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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Modeling methods Modeling methods
Simulation models are widely used in all types of hydrologic studies, and many of these models can be used to estimate recharge. Models can provide important insight into the functioning of hydrologic systems by identifying factors that influence recharge. The predictive capability of models can be used to evaluate how changes in climate, water use, land use, and other factors may affect...
Authors
Richard W. Healy
Passive seismic monitoring of natural and induced earthquakes: Case studies, future directions and socio-economic relevance Passive seismic monitoring of natural and induced earthquakes: Case studies, future directions and socio-economic relevance
An important discovery in crustal mechanics has been that the Earth’s crust is commonly stressed close to failure, even in tectonically quiet areas. As a result, small natural or man-made perturbations to the local stress field may trigger earthquakes. To understand these processes, Passive Seismic Monitoring (PSM) with seismometer arrays is a widely used technique that has been...
Authors
Marco Bohnhoff, Georg Dresen, William L. Ellsworth, Hisao Ito
Post-construction monitoring of a Core-Loc™ breakwater using tripod-based LiDAR Post-construction monitoring of a Core-Loc™ breakwater using tripod-based LiDAR
The goal of the technology application described herein is to determine whether breakwater monitoring data collected using Tripod (or Terrestrial) Light Detection and Ranging (T-LiDAR) can give insight into processes such as how Core-Loc™ concrete armour units nest following construction, and in turn how settlement affects armour layer stability, concrete cap performance, and armour unit...
Authors
Jessica H. Podoski, Gerald W. Bawden, Sandra Bond, Thomas D. Smith, James Foster
Repeat photography and low-elevation fire responses in the southwestern United States Repeat photography and low-elevation fire responses in the southwestern United States
No abstract available.
Authors
Raymond M. Turner, Robert H. Webb, Todd C. Esque, Garry F. Rogers
Restoration and revegetation associated with control of saltcedar and Russian olive: Chapter 7 Restoration and revegetation associated with control of saltcedar and Russian olive: Chapter 7
Rationales for controlling or eliminating saltcedar and Russian olive from sites, river reaches, or entire streams include implicit or explicit assumptions that natural recovery or applied restoration of native plant communities will follow exotic plant removal (McDaniel and Taylor, 2003; Quimby and others, 2003). The vegetation that replaces saltcedar and Russian olive after treatment (
Authors
Patrick B. Shafroth, David M. Merritt, Vanessa B. Beauchamp, Kenneth D. Lair
Rift-related volcanism and karst geohydrology of the southern Ozark Dome Rift-related volcanism and karst geohydrology of the southern Ozark Dome
This field trip examines the geology and geohydrology of a dissected part of the Salem Plateau in the Ozark Plateaus province of south-central Missouri. Rocks exposed in this area include karstified, flat-lying, lower Paleozoic carbonate platform rocks deposited on Mesoproterozoic basement. The latter is exposed as an uplift located about 40 mi southwest of the St. Francois Mountains and...
Authors
Richard W. Harrison, David J. Weary, Randall C. Orndorff, John E. Repetski, Herbert A. Pierce, Gary R. Lowell
Saltcedar and Russian olive control demonstration act science assessment [Executive summary] Saltcedar and Russian olive control demonstration act science assessment [Executive summary]
The primary intent of this document is to provide the science assessment called for under The Saltcedar and Russian Olive Control Demonstration Act of 2006 (Public Law 109–320; the Act). A secondary purpose is to provide a common background for applicants for prospective demonstration projects, should funds be appropriated for this second phase of the Act. This document synthesizes the...
Authors
Pamela L. Nagler, Patrick B. Shafroth, James W. LaBaugh, Keirith A. Snyder, Russell L. Scott, David M. Merritt, John Osterberg
Saltcedar and Russian olive interactions with wildlife: Chapter 4 Saltcedar and Russian olive interactions with wildlife: Chapter 4
Riparian areas of flood plains typically provide a mosaic of productive habitats (Stanford and others, 2005; Latterell and others, 2006) capable of supporting many wildlife species, particularly in the arid and semiarid Western United States. The establishment of nonnative invasive plants can alter riparian habitat by inhibiting native plant recruitment and by increasing the risk of...
Authors
Heather L. Bateman, Eben H. Paxton
Sampling and analysis of emerging pollutants Sampling and analysis of emerging pollutants
No abstract available.
Authors
Tammy L. Jones-Lepp, David A. Alvarez
Springs - A Florida Treasure Springs - A Florida Treasure
No abstract available.
Authors
Howard L. Jelks