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Effect of mineral deposit data on predictions from the three-part approach to quantitative mineral resource assessment—A study of 16 previous U.S. Geological Survey assessments Effect of mineral deposit data on predictions from the three-part approach to quantitative mineral resource assessment—A study of 16 previous U.S. Geological Survey assessments
The three-part approach to quantitative mineral resource assessment requires information about the properties of undiscovered mineral deposits in an assessment area. These properties are unknown, so the properties of discovered mineral deposits of the same mineral deposit type are used instead. In the three-part approach, these discovered mineral deposits come from around the world, and...
Authors
Karl J. Ellefsen
Rewilding the upper Klamath River Basin: Rapid recolonization of Chinook salmon following the world’s largest dam removal Rewilding the upper Klamath River Basin: Rapid recolonization of Chinook salmon following the world’s largest dam removal
Habitat fragmentation is a global driver of decline in biodiversity, yet evaluations of ecological response following re-connection remain rare. In 2024, four hydroelectric dams on the Klamath River were removed, reconnecting over 640 km of anadromous habitat and marking the largest dam removal project completed to date. We used a stationary high-resolution multi-beam imaging SONAR to...
Authors
Damon H. Goodman, Keith Denton, George Pess, James Whelan, Oleksandr Stefankiv, Toz Soto, Alex Corum, Jordan Ortega, Oshun O'Rourke, Mark Hereford, Domenic Giudice, Nicholas A Som
Streamflow, water quality, and constituent loads and yields, Scituate Reservoir drainage area, Rhode Island, water year 2023 Streamflow, water quality, and constituent loads and yields, Scituate Reservoir drainage area, Rhode Island, water year 2023
As part of a long-term cooperative program to monitor water quality within the Scituate Reservoir drainage area, the U.S. Geological Survey, in cooperation with Providence Water (formerly the Providence Water Supply Board), collected streamflow and water-quality data in tributaries to the Scituate Reservoir, Rhode Island. Streamflow and concentrations of chloride and sodium estimated...
Authors
Kirk P. Smith
Age and colony variation in Adélie penguin metapopulation vital rates: Insights from a 25-year mark–recapture study Age and colony variation in Adélie penguin metapopulation vital rates: Insights from a 25-year mark–recapture study
Understanding how vital rates vary with age, life-history stage, and among populations is fundamental for predicting the demographic consequences of environmental change, especially in longer-lived species with complex life histories. These species often exhibit delayed maturity and iteroparity, making nuanced demographic insights critical for assessing their long-term viability. This...
Authors
Katie M. Dugger, Grant Ballard, Kerry J Barton, Amélie Lescroël, Phil O’B. Lyver, Annie E. Schmidt, Ainley G. David
Numerical modeling of Late Pleistocene to Holocene earthquake-induced progressive rock slope damage in the paraglacial Serpentine valley, Prince William Sound, Alaska Numerical modeling of Late Pleistocene to Holocene earthquake-induced progressive rock slope damage in the paraglacial Serpentine valley, Prince William Sound, Alaska
Landslides in deglaciating fjords pose a potential tsunami threat to nearby communities; however, processes contributing to long-term progressive rock damage and landslide conditioning remain poorly constrained in paraglacial settings. Here, we analyse the role of earthquake-induced rock mass damage over late Pleistocene to Holocene time scales, as a conditioning factor for modern...
Authors
Molly E. McCreary, Jeffrey R. Moore, Erin K. Jensen, Valentin S. Gischig, Dennis M. Staley, Brian D. Collins
Assessment of undiscovered conventional oil and gas resources in the central Arabian Peninsula, 2026 Assessment of undiscovered conventional oil and gas resources in the central Arabian Peninsula, 2026
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean conventional resources of 13.3 billion barrels of oil and 111 trillion cubic feet of gas in the central Arabian Peninsula.
Authors
Christopher J. Schenk, Tracey J. Mercier, Phuong A. Le, Andrea D. Cicero, Sarah E. Gelman, Jane S. Hearon, Benjamin G. Johnson, Jenny H. Lagesse, Heidi M. Leathers-Miller
Evaluating interactive effects of the Conservation Reserve Program and wind energy infrastructure on grassland bird abundance in the United States Evaluating interactive effects of the Conservation Reserve Program and wind energy infrastructure on grassland bird abundance in the United States
The extent of grasslands has contracted globally, leading to significant declines in grassland-obligate species, including birds. Grassland birds are threatened by multiple factors, including grassland conversion to cropland, and development, including energy infrastructure. In the USA, the federal Conservation Reserve Program (CRP) provides financial incentives for agricultural...
Authors
Samantha A. McGarrigle, Ellery Lassiter, Karen Maguire, Rich Iovanna, Jay E. Diffendorfer, Anthony Lopez, Kyle Reed, Courtney J. Duchardt, Scott Loss
Amploc: A complete Python workflow for amplitude-based locations Amploc: A complete Python workflow for amplitude-based locations
Amplitude‐based locations are well suited for characterizing long‐duration seismic sources that may migrate with time, such as debris flows, avalanches, rockfall, and volcanic tremor. Although amplitude‐based location methods have existed for decades, their adoption in real‐time monitoring systems remains limited. We present a complete Python‐based workflow that includes station...
Authors
Weston Thelen, Noah Mcgregor Harper
Towards a refined definition of “tidal influence” for the coastal wetland sciences Towards a refined definition of “tidal influence” for the coastal wetland sciences
The astronomical tide relates to lunar (and to a lesser extent solar) influences on rising and falling water bodies, and is a key control of many coastal processes. However, tides manifest along coastal margins in different ways to muddle application beyond Sir Isaac Newton’s first descriptions. Here, we argue that tide, or specifically “tidal,” has not been adequately defined for the...
Authors
Ken W. Krauss, Laura S. Brophy, Judith Z. Drexler, Jeffrey A. Kelleway, Janine B. Adams, Havalend E. Steinmuller, Gregory B. Noe, Michael J. Osland, Jamie A. Duberstein, Kurt P. Kowalski, Amanda L. McCutcheon, Kaile'a M. Annandale, Daniel A. Friess, Eric E. Grossman, Kristin B. Byrd, Kevin J. Buffington, Joel A. Carr, Nicholas M. Enwright, Camille L. Stagg, Davina L. Passeri, Stephanie S. Romanach, Glenn R. Guntenspergen, James B. Grace, Christopher G. Smith, Justine A. Neville, Karen M. Thorne, Brian J. Roberts
Applying a metapopulation model to compare native and invasive fish passage scenarios in the Upper Mississippi River Applying a metapopulation model to compare native and invasive fish passage scenarios in the Upper Mississippi River
The U.S. Geological Survey assessed the ability of metapopulation models to evaluate population-level effects of fish passage projects in the Upper Mississippi River for six native species: Ictalurus furcatus (Valenciennes in Cuvier and Valenciennes, 1840; blue catfish), Ictiobus cyprinellus (Valenciennes in Cuvier and Valenciennes, 1844; bigmouth buffalo), Acipenser fulvescens...
Authors
Morganne Borsh, Charles J. Labuzzetta, Marybeth K. Brey, Mark Cornish, Alison Coulter, Andrea K. Fritts, David Smith, Richard A. Erickson
Satellite embeddings for crop type classification: A comparative examination Satellite embeddings for crop type classification: A comparative examination
Embedding datasets encode complex relationships among multiple sources of Earth observation data into a compact format. Here, we evaluated the utility of a 10-m global Satellite Embedding product (SE) for classifying crop types in central California for the year 2020. We compared the classification accuracy of a random forest model based exclusively on the SE layer to an existing random...
Authors
Britt Windsor Smith, Jessica J. Walker, Christopher E. Soulard
SlideDetect: Spatio-temporal landslide detection using a three-dimensional convolutional neural network SlideDetect: Spatio-temporal landslide detection using a three-dimensional convolutional neural network
Landslides pose a serious and ongoing threat to both human lives and infrastructure worldwide; therefore, it is of interest to predict where and when landslides are likely to occur. Advances in machine learning techniques have spurred numerous studies aimed at estimating relative landslide propensity, but are limited to spatial (as opposed to temporal) prediction due to the sparsity of...
Authors
Max Sutton, Benjamin B. Mirus, George Hilley