Publications
Click below for access to more than 170,000 publications written by USGS scientists over the century-plus history of the bureau.
Filter Total Items: 756
Water resources on Guam—Potential impacts of and adaptive response to climate change
The goals of this joint U.S. Geological Survey, University of Hawaiʻi, University of Guam, University of Texas, and East-West Center study were to (1) provide basic understanding about water resources for U.S. Department of Defense installations on Guam and (2) assess the resulting effect of sea-level rise and a changing climate on freshwater availability, on the basis of historic information, sea
Authors
Stephen B. Gingerich, Adam G. Johnson, Sarah N. Rosa, Mathieu D. Marineau, Scott A. Wright, Lauren E. Hay, Matthew J. Widlansky, John W. Jenson, Corinne I. Wong, Jay L. Banner, Melissa L. Finucane, Victoria W. Keener
Freshwater availability in Guam with projected changes in climate
Guam receives 85 to 116 inches of rain a year, two-thirds of which has historically fallen during the wet season. On average, three tropical storms and one typhoon pass within 80 nautical miles of Guam each year, generally during the rainy season. Both drought and flooding can impact freshwater supply and the associated infrastructure. Department of Defense (DoD) installations and non-military pop
Authors
Stephen Gingerich, Victoria Keener, Melissa L. Finucane
Guam's water resources
How do climate and humans impact freshwater resources, and how can we plan for change?
Authors
Stephen Gingerich, Victoria Keener, Melissa L. Finucane
Optimizing walking pace to maximize snake detection rate: A visual encounter survey experiment
Visual encounter survey efforts can be defined and constrained by duration, distance, or both duration and distance simultaneously. This study examines the optimal walking pace that will maximize the number of animal detections within a limited time frame. We predicted that animal sighting rate per unit of distance would decline with increasing pace, but that maximal sighting rate per unit of time
Authors
Bjorn Lardner, Amy A. Yackel Adams, Julie A. Savidge, Robert Reed
The role of nanoparticles in mediating element deposition and transport at hydrothermal vents
Precipitation processes in hydrothermal fluids exert a primary control on the eventual distribution of elements, whether that sink is in the subseafloor, hydrothermal chimneys, near-field metalliferous sediments, or more distal in the ocean basin. Recent studies demonstrating abundant nanoparticles in hydrothermal fluids raise questions as to the importance of these nanoparticles relative to macro
Authors
Amy Gartman, Alyssa J. Findlay, Mark D. Hannington, Dieter Garbe-Schönberg, John W. Jamieson, Tom Kwasnitschka
Environmental gradients influence differences in leaf functional traits between native and non-native plants
Determining the characteristics of non-native plants that can successfully establish and spread is central to pressing questions in invasion ecology. Evidence suggests that some non-native species establish and spread in new environments because they possess characteristics (functional traits) that allow them to either successfully compete with native residents or fill previously unfilled niches.
Authors
Jonathan J Henn, Stephanie G. Yelenik, Ellen Ingman Damschen
Drought in the U.S. Affiliated Pacific Islands: Impacts to water resources
No abstract available.
Authors
Stephen Anthony
Tsunamis: Stochastic models of generation, propagation, and occurrence
The devastating consequences of the 2004 Indian Ocean and 2011 Tohoku-oki tsunamis have led to increased research into many different aspects of the tsunami phenomenon. In this paper, we review research related to the observed complexity and uncertainty associated with tsunami generation, propagation, and occurrence described and analyzed using a variety of stochastic models. In each case, tsunam
Authors
Eric L. Geist, David Oglesby, Kenny Ryan
Case study: Thomas Fire
No abstract available.
Authors
Jason R. Kreitler, Amy E. East, Joel B. Sankey, Christina (Naomi) Tague
Estimated groundwater recharge from a water-budget model incorporating selected climate projections, Island of Maui, Hawai‘i
Demand for freshwater on the Island of Maui is expected to increase by 45 percent between 2015 and 2035. Groundwater availability on Maui is affected by changes in climate and agricultural irrigation. To evaluate the availability of fresh groundwater under projected future climate conditions and changing agricultural irrigation practices, estimates of groundwater recharge are needed. A water-budge
Authors
Alan Mair, Adam G. Johnson, Kolja Rotzoll, Delwyn S. Oki
Enabling real-time user interaction for decision support: Experiences extending a local agave platform metadata service
The University of Hawai'i Information Technology Services Cyber-infrastructure team in partnership with the United States Geological Survey developed the Hawai'i groundwater recharge tool, a decision support tool, as part of the 'Ike Wai Gateway to support water sustainability research for the state of Hawai'i. To enable the development of the tool within the existing University of Hawai'i Agave p
Authors
Sean B. Cleveland, Jared H. McClean, Kolja Rotzoll, Scot K. Izuka, Gwen A. Jacobs
Measurement of sounds emitted by certain high-resolution geophysical survey systems
Scientific questions regarding the impact of anthropomorphic noise in the marine environment have resulted in an increasing number of regulatory requirements and precautionary mitigation strategies to reduce the risks associated with high-resolution marine geophysical surveys performed in waters subjected to government jurisdiction. An example of regulatory frameworks includes the Marine Mammal Pr
Authors
Steven E Crocker, Frank D Fratantonio, Patrick E. Hart, David S. Foster, Thomas F. O'Brien, Stanley Labak