Publications
Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS. Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.
Mission Area Publications
Mission Area Publications
We are focused on some of the most significant issues society faces, and our science is making a substantial contribution to the well-being of the Nation and the world. Learn more about the major topics our research covers and the programs focused on those topics.
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Miocene terrestrial paleoclimates inferred from pollen in the Monterey Formation, Naples Coastal Bluffs section, California Miocene terrestrial paleoclimates inferred from pollen in the Monterey Formation, Naples Coastal Bluffs section, California
We present here a comprehensive record of Miocene terrestrial ecosystems from exposures of the Monterey Formation along the Naples coastal bluffs, west of Santa Barbara, California. Constrained by an updated chronology, pollen analyses of 28 samples deposited between 18 and 6 Ma reflect the demise of mesophytic taxa that grew in a warm, wet environment during the late early and early...
Authors
Linda E. Heusser, John A. Barron, Gregg Blake, Jon Nichols
Sediment thickness and ground motion site amplification along the United States Atlantic and Gulf Coastal Plains Sediment thickness and ground motion site amplification along the United States Atlantic and Gulf Coastal Plains
Past and present research on earthquake ground motions along the Atlantic and Gulf Coastal Plains and Mississippi Embayment show significant period-dependent site response that is not presently accounted for in ground motion models. These deviations are strongly correlated with the thickness of Mesozoic and younger syn- and post-rift sediments. With the recent incorporation of deep basin...
Authors
Oliver S. Boyd, David Henry Churchwell, Morgan P. Moschetti, Eric M. Thompson, Thomas L. Pratt, Martin C. Chapman, Sanaz Rezaeian
Using in situ/ex situ research collaborations to support polar bear conservation Using in situ/ex situ research collaborations to support polar bear conservation
A warming Arctic threatens the long-term persistence of polar bears (Ursus maritimus) in the wild. Historically, little collaboration existed between the in situ and ex situ polar bear scientific communities. However, for the past decade, zoo professionals, government agencies, and non-governmental organizations (NGO’s) have partnered to leverage resources and expertise with the goal of...
Authors
Randi Meyerson, Todd C. Atwood
Egg retention in wild-caught Python bivittatus in the Greater Everglades Ecosystem, Florida, USA Egg retention in wild-caught Python bivittatus in the Greater Everglades Ecosystem, Florida, USA
Retention of eggs in oviducts beyond the normal oviposition period is a common problem for captive reptiles, but the occurrence of egg retention in wild populations is largely unknown. The Burmese python (Python [molurus] bivittatus; Kühl 1820) is an oviparous snake native to south-eastern Asia that is now established in southern Florida. From 2011–2019, invasive Burmese pythons were
Authors
Gretchen Erika Anderson, Frank N. Ridgley, Jillian Maureen Josimovich, Robert Reed, Bryan G. Falk, Amy A. Yackel Adams, Andrea Faye Currylow
Standard operating protocol for mark and recapture monitoring of Brook Floater in streams Standard operating protocol for mark and recapture monitoring of Brook Floater in streams
The Brook Floater (Alasmidonta varicosa) is a small (
Authors
Sean Sterrett, Allison H. Roy, Peter Hazelton, Beth Swartz, Ethan Nedeau, Jason Carmignani, Ayla Skorupa
Modelagem de qualidade da agua: Aplicação do SPARROW Modelagem de qualidade da agua: Aplicação do SPARROW
No abstract available.
Authors
Flavio Hadler Troger, Sergio Rodrigues Ayrimoraes Soares, Diana Leite Cavalcanti, Marcelo Luiz de Souza, Daniel Edmund Restivo, Olivia L. Miller
Southeast Utah Group climate and drought adaptation report: Exposure and perennial grass sensitivity Southeast Utah Group climate and drought adaptation report: Exposure and perennial grass sensitivity
National Park Service (NPS) managers face growing challenges resulting from the effects of climate change. In particular, as temperatures rise in coming decades, natural resource management in the western United States must cope with expectations for elevated severity and frequency of droughts. These challenges are particularly pronounced for vegetation managers in dryland environments...
Authors
John B. Bradford, Caroline Havrilla, Jessica A. Hartsell, Daniel Rodolphe Schlaepfer, Molly L. McCormick, Seth M. Munson, Charles B. Yackulic, Terry T Fisk, David Thoma, Dusty Perkins, Dana L. Witwicki, Matt VanScoyoc, Michael C. Duniway, Sasha C. Reed
Medium-fidelity CFD modeling of multicopter wakes for airborne sensor measurements Medium-fidelity CFD modeling of multicopter wakes for airborne sensor measurements
No abstract available.
Authors
Jonathan Chiew, Michael Aftosmis, Kristen L. Manies
The importance of phenology and thermal exposure to early life history success of nonnative Smallmouth Bass in the Yellowstone River The importance of phenology and thermal exposure to early life history success of nonnative Smallmouth Bass in the Yellowstone River
Knowledge of potential spread by introduced species is critical to effective management and conservation. The Smallmouth Bass Micropterus dolomieu is an example of a fish that has been introduced globally, often spreads after introduction, and has substantial predatory impacts on fish assemblages. Nonnative Smallmouth Bass in the free-flowing Yellowstone River, Montana, have expanded...
Authors
Nicholas S. Voss, Robert K. Al-Chokhachy, Adam Sepulveda, Christine E. Verhille, Michael P. Ruggles, Alexander V. Zale
GeoAI and the future of spatial analytics GeoAI and the future of spatial analytics
This chapter discusses the challenges of traditional spatial analytical methods in their limited capacity to handle big and messy data, as well as mining unknown or latent patterns. It then introduces a new form of spatial analytics—geospatial artificial intelligence (GeoAI)—and describes the advantages of this new strategy in big data analytics and data-driven discovery. Finally, a...
Authors
Wenwen Li, Samantha T. Arundel
Continental shelves as detrital mixers: U-Pb and Lu-Hf detrital zircon provenance of the Pleistocene–Holocene Bering Sea and its margins Continental shelves as detrital mixers: U-Pb and Lu-Hf detrital zircon provenance of the Pleistocene–Holocene Bering Sea and its margins
Continental shelves serve as critical transfer zones in sediment-routing systems, linking the terrestrial erosional and deep-water depositional domains. The degree to which clastic sediment is mixed and homogenized during transfer across broad shelves has important implications for understanding deep-sea detrital records. Wide continental shelves are thought to act as capacitors...
Authors
Matthew A. Malkowski, Samuel Johnstone, Glenn R. Sharman, Colin J. White, Daniel S. Scheirer, Ginger Barth
By
Coastal and Marine Hazards and Resources Program, National Cooperative Geologic Mapping Program, Geology, Minerals, Energy, and Geophysics Science Center, Geosciences and Environmental Change Science Center, Pacific Coastal and Marine Science Center, Deep Sea Exploration, Mapping and Characterization