Publications
Filter Total Items: 62
Preserving and increasing water resources—Natural infrastructure in dryland streams in Baja California Sur, Mexico Preserving and increasing water resources—Natural infrastructure in dryland streams in Baja California Sur, Mexico
The Los Planes watershed of Baja California Sur, Mexico, and its underlying aquifer are experiencing groundwater decline owing to low average annual rainfall (28.1 centimeters per year) and rising water demand from population growth and agricultural activities. This decline in water availability can lead to desertification—a process that changes arable land to desert by degrading soil...
Authors
Alma Anides Morales, Laura M. Norman, Thomas J. Mack
Trends in richness and occupancy of Ugandan birds and relation to local tree cover Trends in richness and occupancy of Ugandan birds and relation to local tree cover
Changes in vegetation cover are occurring across sub-Saharan Africa and can have substantial effects on ecological communities, but limited data make understanding status and trends difficult for many taxa. We surveyed birds for several decades across Uganda using point counts. Using time-to-detection analysis in a trait-informed Bayesian multi-species occupancy framework, we model bird...
Authors
Ryan Burner, Evan Adams, Derek Pomeroy, Herbert Tushabe, Micheal Kibuule, Lars Jørgen Rostad, Zander S. Venter, Douglas Sheil
Proceedings of the 2024 Asia-Pacific Wildlife Health Workshop—Collaborating against shared threats Proceedings of the 2024 Asia-Pacific Wildlife Health Workshop—Collaborating against shared threats
Emerging diseases of wildlife origin are increasingly transboundary (they spread rapidly across geographic regions and across continents). In recent years, examples include the rapid spread of African swine fever across Europe and Asia with negative effects on food security, and the near global spread of highly pathogenic avian influenza which has devastated wildlife populations, caused...
Geospatial PDF map of the compilation of GIS data for the mineral industries and related infrastructure of Africa Geospatial PDF map of the compilation of GIS data for the mineral industries and related infrastructure of Africa
IntroductionIn 2021, the U.S. Geological Survey's (USGS) National Minerals Information Center (NMIC) completed the project titled "Compilation of geospatial data for the mineral industries and related infrastructure of Africa." This project aimed to leverage the expertise and capabilities of the NMIC to collect, synthesize, and interpret geospatial data to inform on the extractive...
Authors
Elizabeth Neustaedter, Ryan Kemna, Abraham Padilla, Donya Otarod
Assessment of undiscovered conventional oil and gas resources in postsalt reservoirs of the West-Central Coastal Province of Africa, 2022 Assessment of undiscovered conventional oil and gas resources in postsalt reservoirs of the West-Central Coastal Province of Africa, 2022
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean conventional resources of 10.5 billion barrels of oil and 47.4 trillion cubic feet of gas in postsalt reservoirs within the West-Central Coastal Province of Africa.
Authors
Christopher Schenk, Tracey J. Mercier, Cheryl Woodall, Phuong A. Le, Andrea Cicero, Ronald M. Drake, Geoffrey Ellis, Thomas Finn, Michael Gardner, Sarah Gelman, Jane Hearon, Benjamin Johnson, Jenny Lagesse, Heidi M. Leathers-Miller, Kristen Marra, Kira Timm, Scott Young
To mix or not to mix: Details of magma storage, recharge, and remobilization during the Pacheco stage at Misti Volcano, Peru (≤21–2 ka) To mix or not to mix: Details of magma storage, recharge, and remobilization during the Pacheco stage at Misti Volcano, Peru (≤21–2 ka)
We investigate ten of the most recent tephra-fall deposits emplaced between ≤21–2 ka from the Pacheco stage of Misti volcano, Peru, to elucidate magma dynamics and explosive eruption triggers related to magma storage, recharge, and remobilization. Whole-rock, glass, and mineral textures and compositions indicate the presence of broadly felsic, intermediate, and mafic magmas in a...
Authors
Marie Takach, Frank Tepley, Christopher Harpel, Rigoberto Aguilar, Marco Rivera
Overview of the Cenozoic geology of the northern Harrat Rahat volcanic field, Kingdom of Saudi Arabia Overview of the Cenozoic geology of the northern Harrat Rahat volcanic field, Kingdom of Saudi Arabia
The Harrat Rahat volcanic field, located in the west-central part of the Kingdom of Saudi Arabia, is one of the larger Cenozoic harrats among the more than 17 harrats situated upon the Arabia Plate. The map plate contained herein shows, at a scale of 1:100,000, the mapped volcanic geology of northern Harrat Rahat, which consists of the northernmost one-fifth of Harrat Rahat. Northern...
Authors
Joel E. Robinson, Drew Downs
Probabilistic seismic-hazard analysis for the western Kingdom of Saudi Arabia Probabilistic seismic-hazard analysis for the western Kingdom of Saudi Arabia
We present a probabilistic seismic-hazard analysis (PSHA) for the west-central part of the Arabian Peninsula. Our study area includes the northern Harrat Rahat volcanic field and the nearby city of Al Madīnah, Kingdom of Saudi Arabia. This young, active volcanic field experienced one historical eruption in 1256 C.E. (654 in the year of the Hijra) that vented 20 to 22 kilometers (km)...
Authors
Ryota Kiuchi, Walter Mooney, Hani Zahran
The Saudi Geological Survey-U.S. Geological Survey northern Harrat Rahat project—Styles, rates, causes, and hazards of volcanism near Al Madīnah al Munawwarah, Kingdom of Saudi Arabia The Saudi Geological Survey-U.S. Geological Survey northern Harrat Rahat project—Styles, rates, causes, and hazards of volcanism near Al Madīnah al Munawwarah, Kingdom of Saudi Arabia
Active volcanic systems pose serious hazards to people and property including inundation and incineration by lava, blanketing by tephra (volcanic ash), exposure to noxious volcanic gases, and damage from shallow earthquakes triggered by ascending molten material (magma). To improve understanding of volcanism and associated seismicity on the western Arabia Plate, the Saudi Geological...
Authors
Thomas Sisson, Andrew Calvert, Walter Mooney
Fire regime shapes butterfly communities through changes in nectar resources in an Australian tropical savanna Fire regime shapes butterfly communities through changes in nectar resources in an Australian tropical savanna
Fire-dependent savanna provides key habitat for butterflies globally, but we know little about how fire regimes, including fire frequency and season, affect them. These impacts are likely to be primarily indirect, through changes in overall habitat structure, the abundance of larval host plants, and/or the provision of nectar resources for adults. We examined the relationships among fire...
Authors
Julia Leone, Diane L. Larson, Anna Richards, Jon Schatz, Alan Andersen
Global dataset of soil organic carbon in tidal marshes Global dataset of soil organic carbon in tidal marshes
Tidal marshes store large amounts of organic carbon in their soils. Field data quantifying soil organic carbon (SOC) stocks provide an important resource for researchers, natural resource managers, and policy-makers working towards the protection, restoration, and valuation of these ecosystems. We collated a global dataset of tidal marsh soil organic carbon (MarSOC) from 99 studies that...
Authors
Tania Maxwell, Andre Rovai, Maria Adame, Janine Adams, Jose Alvarez-Rogel, William Austin, Kim Beasy, Francesco Boscutti, Michael Bottcher, Tjeerd Bouma, Richard Bulmer, Annette Burden, Shannon Burke, Saritta Camacho, Doongar Chaudhary, Gail L. Chmura, Margareth Copertino, Grace Cott, Christopher Craft, John Day, Carmen de los Santos, Lionel Denis, Weixin Ding, Joanna Ellison, Carolyn Ewers Lewis, Luise Giani, Maria Gispert, Swanne Gontharet, Jose Gonzalez-Perez, M. Gonzalez-Alcaraz, Connor Gorham, Anna Graversen, Anthony Grey, Roberta Guerra, Qiang He, James Holmquist, Alice Jones, Jose Juanes, Brian Kelleher, Karen Kohfeld, Dorte Krause-Jensen, Anna Lafratta, Paul Lavery, Edward Laws, Carmen Leiva-Duenas, Pei Loh, Catherine Lovelock, Carolyn Lundquist, Peter Macreadie, Ines Mazarrasa, J. Megonigal, Joao Neto, Juliana Nogueira, Michael Osland, Jordi Pages, Nipuni Perera, Eva-Maria Pfeiffer, Thomas Pollmann, Jacqueline Raw, Maria Recio, Ana Carolina Ruiz-Fernández, Sophie Russell, John M. Rybczyk, Marek Sammul, Christian Sanders, Rui Santos, Oscar Serrano, Matthias Siewert, Craig Smeaton, Zhaoliang Song, Carmen Trasar-Cepeda, Robert Twilley, Marijn Van de Broek, Stefano Vitti, Livia Antisari, Baptiste Voltz, Christy Wails, Raymond Ward, Melissa Warden, Jaxine Wolfe, Renmin Yang, Sebastian Zubrzycki, Emily Landis, Lindsey Smart, Mark Spalding, Thomas Worthington
Rapid surface rupture mapping from satellite data: The 2023 Kahramanmaraş, Turkey (Türkiye), earthquake sequence Rapid surface rupture mapping from satellite data: The 2023 Kahramanmaraş, Turkey (Türkiye), earthquake sequence
The 6 February 2023 Kahramanmaraş, Turkey (Türkiye), earthquake sequence produced > 500 km of surface rupture primarily on the left‐lateral East Anatolian (~345 km) and Çardak (~175 km) faults. Constraining the length and magnitude of surface displacement on the causative faults is critical for loss estimates, recovery efforts, rapid identification of impacted infrastructure, and fault...
Authors
Nadine Reitman, Richard Briggs, William Barnhart, Alexandra Hatem, Jessica Jobe, Christopher DuRoss, Ryan Gold, John Mejstrik, Camille Collett, Richard Koehler, Sinan Akciz