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Logical data model for hydrographic data based on HY_Features concepts Logical data model for hydrographic data based on HY_Features concepts
This report describes background and design of the “hydrofabric data model” which defines logic for implementation of data schemas and software that deals with hydrologic geospatial data. As a “logical” data model, the hydrofabric data model specifies details necessary to support compatibility of data and software that satisfy diverse needs without unnecessarily restricting...
Characterizing changes in postfire debris-flow hazard as burned areas recover Characterizing changes in postfire debris-flow hazard as burned areas recover
Emergency assessments of postfire debris-flow hazards that are performed by the U.S. Geological Survey (USGS) provide estimates of debris-flow likelihood and rainfall triggering conditions that are used for evaluating and managing runoff-generated debris-flow hazards in recently burned areas throughout the western United States. Although the immediate postfire period, within roughly one...
Authors
Andrew Paul Graber, Matthew A. Thomas, Jason W. Kean, Jonathan Michael King, Jaime Kostelnik
Analyses of meteorological and hydrological records support Tribal members’ accounts of changing climate on the Fort Apache Reservation, east–central Arizona Analyses of meteorological and hydrological records support Tribal members’ accounts of changing climate on the Fort Apache Reservation, east–central Arizona
The Fort Apache Reservation in east–central Arizona, home to the White Mountain Apache Tribe of the Fort Apache Reservation, Arizona, contains several climate zones because of the large variation in surface elevation within the reservation. This study was carried out in cooperation with the White Mountain Apache Tribe of the Fort Apache Reservation, Arizona, to raise awareness of how the...
Authors
Jon P. Mason
Cenozoic distributed volcanism of the Arabia Plate—A review Cenozoic distributed volcanism of the Arabia Plate—A review
Cenozoic volcanic rocks of the Arabia Plate cover about 140,000 square kilometers across a distance of about 3,000 kilometers from southern Yemen to southeastern Turkey. The majority of volcanic products are alkali basalts that erupted in restricted areas, commonly over periods of a million or more years, building mafic lava fields, each known in Arabic as a “harrat.” Harrat volcanism...
Authors
Thomas W. Sisson, Andrew T. Calvert
Why are ornithological studies so focused on the breeding stage? A test of hypotheses Why are ornithological studies so focused on the breeding stage? A test of hypotheses
Unequal representation of focal research areas can arise during the initial stages of project development when investigators make decisions about what, when, and where to study. Regarding when research is conducted, publications on vertebrates are strongly skewed toward breeding-stage studies, leaving sizeable gaps in our knowledge pertaining to behavior and demography in nonbreeding...
Authors
Erin R. Stewart, Courtney J. Conway
The global proliferation of aquatic, benthic Microcoleus: Taxonomy, distribution, toxin production, ecology, and future directions The global proliferation of aquatic, benthic Microcoleus: Taxonomy, distribution, toxin production, ecology, and future directions
There have been sporadic reports of aquatic, benthic Microcoleus proliferations in freshwater rivers, lakes, and reservoirs for four decades, with reports increasing in frequency over the last twenty years, suggesting a possible rise in their global distribution, frequency, and intensity. Microcoleus can produce anatoxins which are neurotoxic, and ingestion of toxic mats has caused...
Authors
Laura T. Kelly, Daniel G Beach, Joanna R. Blaszczak, Keith Bouma-Gregson, Sydney M. Brown, Haowu Cheng, Janette L. Davidson, Jutta Fastner, Marcus Francis, Andrea Garcia Jimenez, Laurel Genzoli, Ramesh Goel, Diego Gonzalez, Kim M. Handley, Sabine Hilt, Jean-Francois Humbert, Rob Jamieson, Lindsay Johnston, Pilar Junier, Janice Lawrence, Pearse McCarron, Sven Meissner, Jacob Mormando, Jonathan Puddick, Catherine Quiblier, Nagasaijanani Rajpirathap, Charlotte Schampera, Andy Selwood, Karen Shearer, Abeer Sohrab, Rosalina Stancheva, Cecilio Valadez-Cano, Jordan M. Zebrecky, Susanna A. Wood
Mount Rainier volcanic hazard information Mount Rainier volcanic hazard information
Introduction Eruptions at Mount Rainier produce lava flows, plumes of airborne volcanic ash, and avalanches of hot rock, ash, and gas—pyroclastic flows—that rush down the steep, ice-covered slopes of the volcano. Hot rock and ash ejected during an eruption can melt large quantities of snow and ice, forming huge, fast moving mudflows called lahars that travel 30+ miles, all the way to...
Authors
Holly F. Weiss-Racine, Joseph A. Bard, Jessica L. Ball, Carolyn L. Mastin
Evaluation of benthic habitat change within the national historic sites of Hawaiʻi’s Kona Coast Evaluation of benthic habitat change within the national historic sites of Hawaiʻi’s Kona Coast
Executive Summary Coral bleaching events have become increasingly common across the Hawaiian Archipelago since 1996 because of more frequent and intense marine heatwaves. The most significant bleaching event to date occurred from 2014 to 2015, which resulted in catastrophic state-wide coral loss. Bleaching events with less severe effects also occurred in 1996 and 2019. To understand the...
Authors
Meredith Leigh McPherson, Joshua B. Logan, Kristen Alkins, Sarah Groff, Gerry A. Hatcher, Ann E. Gibbs, Susan Cochran, Curt D. Storlazzi
Assessment of natural gas pipeline construction on stream temperature and turbidity in southwestern Virginia, 2017–25 Assessment of natural gas pipeline construction on stream temperature and turbidity in southwestern Virginia, 2017–25
Despite the extensive natural gas pipeline network in the United States that intersects streams and other sensitive habitats, few case studies use a comparative upstream-to-downstream approach to evaluate potential short- and long-term effects of pipeline stream crossings from pre-construction through post-restoration. In 2017, the U.S. Geological Survey, in cooperation with the Virginia
Authors
Brendan M. Foster, Carly Marcella Maas, Alejandra Logan Flota
The mineral chemistry networks of tin and tungsten reflect metallogenic eras of the Mesozoic The mineral chemistry networks of tin and tungsten reflect metallogenic eras of the Mesozoic
Continental remobilization is a crucial driver of metallogenesis and the formation of ore deposits. Some of the world’s largest mineral deposits of the economically valuable elements tin (Sn), tungsten (W), gold (Au), copper (Cu), lead (Pb), and zinc (Zn) formed during the Mesozoic Era. Additionally, the chemistry and distribution of the elements Sn and W have been investigated in...
Authors
Elisha Kelly Moore, Shaunna M. Morrison, Amber Hatter
Predicted range shifts of non‐native grasses in response to climate change are influenced by photosynthetic pathway: A case study in the Hawaiian Islands Predicted range shifts of non‐native grasses in response to climate change are influenced by photosynthetic pathway: A case study in the Hawaiian Islands
Aim Grasses comprise three main photosynthetic pathway variants (C3-BOP, C3-PACMAD and C4-PACMAD hereafter referred to as C4). We sought to confirm climate niche differences among these photosynthetic pathway variants and assessed whether predicted non-native grass range shift patterns with climate change differ among photosynthetic pathway variants.Location Hawaiian Islands.Methods We...
Authors
Curtis Daehler, Kevin Faccenda, Elizabeth Aquino Peterson, Kelsey C. Brock, Lucas B. Fortini
Morphometric properties of the CP-21 landing site on the Moon at Mons Gruithuisen Gamma Morphometric properties of the CP-21 landing site on the Moon at Mons Gruithuisen Gamma
Characterizing terrain surface properties is an essential step in assessing the feasibility of landing successfully at a location on a planetary surface. Slopes and terrain ruggedness index (TRI) values derived from high-resolution (2 m pixel−1) digital terrain models provided important constraints in selecting the landing site for the upcoming Payloads and Research Investigations on the...
Authors
Jean-Pierre Williams, Sarah Valencia, Kristen A. Bennett, Margaret E. Landis, Kerri L. Donaldson Hanna, Addison T. Dove, Patrick O'Brien, Brett W. Denevi, Justin Hagerty, Craig Hardgrove, Paul O. Hayne, Adam LaMee, Thomas H. Prettyman, Katherine A. Shirley, Matthew A. Siegler, Jessica M. Sunshine