Conference Papers
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
Filter Total Items: 5321
Rigorously valuing the role of coral reefs in coastal protection: An example from Maui, Hawaii, U.S.A.
The degradation of coastal habitats, particularly coral reefs, raises risks by exposing communities to flooding hazards.
The protective services of these natural defenses are not assessed in the same rigorous, economic terms as artificial
defenses such as seawalls, and therefore often not considered in decision-making. Here we present a new methodology
that combines economic, ecological, and engin
Authors
Curt D. Storlazzi, Borja G. Reguero, Erik Lowe, James B. Shope, Ann E. Gibbs, Mike Beck, Barry A. Nickel
Wave dynamics and flooding on low-lying tropical reef-lined coasts
Many tropical islands and coasts are lined with coral reefs. These reefs are host to valuable ecosystems that support
abundant marine species and provide resources for fisheries and recreation. As a flood defense, reefs protect coastlines
from coastal storm damage and flooding by reducing the majority of incident wave energy. However, during storm and
large swell conditions, coastal wave-driven fl
Authors
Ap van Dongeran, Curt D. Storlazzi, Ellen Quataert, Stuart Pearson
What has been learned from pressure cores
The advancement of pressure core acquisition and analysis technology in recent decades has enabled detailed imaging and direct measurement of naturally occurring hydrate-bearing sediments and has shed light onto hydrate habits, formation processes, fundamental physical properties, and hydrate deposit responses during gas production. This paper reviews the development and capabilities of the pressu
Authors
Sheng Dai, Ray Boswell, William F. Waite, Junbong Jang, J. Y. Lee, Y Seol
Challenges in recovering resources from acid mine drainage
Metal recovery from mine waters and effluents is not a new approach but one that has occurred largely opportunistically over the last four millennia. Due to the need for low-cost resources and increasingly stringent environmental conditions, mine waters are being considered in a fresh light with a designed, deliberate approach to resource recovery often as part of a larger water treatment evaluati
Authors
D. Kirk Nordstrom, Robert J. Bowell, Kate M. Campbell, Charles N. Alpers
Collecting a better water-quality sample: Reducing vertical stratification bias in open and closed channels
Collection of water-quality samples that accurately characterize average particle concentrations and distributions in channels can be complicated by large sources of variability. The U.S. Geological Survey (USGS) developed a fully automated Depth-Integrated Sample Arm (DISA) as a way to reduce bias and improve accuracy in water-quality concentration data. The DISA was designed to integrate with ex
Authors
William R. Selbig
Incipient motion of sand-oil agglomerates
No abstract available.
Authors
Melanie M. A. Schippers, Niels G. Jacobsen, P. Soupy Dalyander, Timothy Nelson, Robert T. McCall
Ongoing efforts to make ash-cloud model forecasts more accurate
The 2010 eruption of Eyjafjallajökull volcano in Iceland changed the rules for air travel in Europe and introduced the use of restricted fly zones based on ash-cloud concentrations calculated by dispersion models. This change prompted a sustained effort to improve the accuracy of ash-cloud model forecasts. In this paper we describe how this goal is being advanced on three fronts: (1) assessing cur
Authors
Larry G. Mastin, Alexa R. Van Eaton, David J. Schneider, Roger P. Denlinger
A foundation for future assessment and management of groundwater resources
Sequence stratigraphic models for the Pleistocene to Holocene sediments of the Los Angeles (LA) Basin will provide better understanding of
regional groundwater flow and have helped identify seawater intrusion pathways into important groundwater aquifers. Because groundwater
provides more than one-third of the municipal water supply for the coastal LA Basin, the aquifer architecture of this system
Authors
Kenneth D. Ehman, Brian D. Edwards
A micro-UAS to start prescribed fires
Prescribed fires have many benefits, but existing ignition methods are dangerous, costly, or inefficient. This paper presents the design and evaluation of a micro-UAS that can start a prescribed fire from the air, while being operated from a safe distance and without the costs associated with aerial ignition from a manned aircraft. We evaluate the performance of the system in extensive controlled
Authors
Evan Beachly, James Higgins, Christian Laney, Sebastian Elbaum, Carrick Detweiler, Craig R. Allen, Dirac Twidwell
Quantifying acoustic doppler current profiler discharge uncertainty: A Monte Carlo based tool for moving-boat measurements
This paper presents a method using Monte Carlo simulations for assessing uncertainty of moving-boat acoustic Doppler current profiler (ADCP) discharge measurements using a software tool known as QUant, which was developed for this purpose. Analysis was performed on 10 data sets from four Water Survey of Canada gauging stations in order to evaluate the relative contribution of a range of error sour
Authors
David S. Mueller
Connecting the dots: Preprocessing Apollo 15 panoramic camera images for photogrammetric control
No abstract available.
Authors
Kenneth L. Edmundson, Brent A. Archinal, Tammy L. Becker, J.A. Mapel, Mark S. Robinson, M.R. Shepherd
Development and utilization of USGS ShakeCast for rapid post-earthquake assessment of critical facilities and infrastructure
The ShakeCast system is an openly available, near real-time post-earthquake information management system. ShakeCast is widely used by public and private emergency planners and responders, lifeline utility operators and transportation engineers to automatically receive and process ShakeMap products for situational awareness, inspection priority, or damage assessment of their own infrastructure or
Authors
David J. Wald, Kuo-wan Lin, C. A. Kircher, Kishor S. Jaiswal, Nicolas Luco, L. Turner, Daniel Slosky