A comparison of CO2 seasonal activity in Mars' northern and southern hemispheres
Candice J. Hansen, Shane Byrne, Wendy M. Calvin, Serina Diniega, Colin M. Dundas, Paul O. Hayne, Alfred S. McEwen, Lauren E McKeown, Sylvain Piqueux, Ganna Portyankina, Meg E Schwamb, Timothy N. Titus, Jacob M Widmer
2024, Icarus (419)
Carbon dioxide is Mars' most active volatile. The seasonal and diurnal processes of when and where it condenses and sublimates are determined by energy balance between the atmosphere and surface ice in Mars' vapor pressure equilibrium climate. Mars' current obliquity ensures that the polar caps are stable locations for seasonal condensation. The eccentricity of...
Polar science results from Mars Reconnaissance Orbiter: Multiwavelength, multiyear insights
Margaret E. Landis, P. J. Acharya, N. R. Alsaeed, C. Andres, Patricio Becerra, Wendy M. Calvin, E. M. Cangi, S. F. A. Cartwright, M. S. Chaffin, Serina Diniega, Colin M. Dundas, Candice J. Hansen, Paul O. Hayne, Kenneth E. Herkenhoff, David M. Kass, Aditya R. Khuller, Lauren McKeown, Patrich S. Russell, Isaac B. Smith, Sarah S. Sutton, J. M. Widmer, Jennifer L Whitten
2024, Icarus (419)
Mars Reconnaissance Orbiter (MRO), with its arrival in 2006 and nearly continuous operation since, has provided data for the study of martian polar processes spanning nine Mars years. Mars' polar deposits have long been thought to preserve records of past climates, potentially readable like terrestrial ice cores. However, unraveling millions of...
Environmental monitoring of groundwater, surface water, and soil at the Ammonium Perchlorate Rocket Motor Destruction Facility at the Letterkenny Army Depot, Chambersburg, Pennsylvania, 2021
Daniel G. Galeone, Shaun J. Donmoyer
2024, Open-File Report 2024-1031
Letterkenny Army Depot in Chambersburg, Pennsylvania, built an Ammonium Perchlorate Rocket Motor Destruction (ARMD) Facility in 2016 to centralize rocket motor destruction and contain all waste during the destruction process. The U.S. Geological Survey has collected environmental samples from groundwater, surface water, and soils at ARMD since 2016.During 2021, samples...
Origins and nature of large explosive eruptions in the lower East Rift Zone of Kīlauea volcano, Hawaii: Insights from ash characterization and geochemistry
Richard W. Hazlett, Johanne Schmith, Allan Lerner, Drew T. Downs, Erin P. Fitch, Carolyn E. Parcheta, Cheryl A. Gansecki, Sarah Spaulding
2024, Journal of Volcanology and Geothermal Research (452)
Several powerful explosive eruptions have taken place in the populated lower East Rift Zone of Kīlauea within the past ∼750 years. These have created distinctive landforms, including a tephra rim enclosing Puʻulena Crater immediately south of the Puna Geothermal Venture power station, a tuff cone at Kapoho Crater near the eastern...
Status and understanding of groundwater quality in the Mojave Basin Domestic-Supply Aquifer study unit, 2018—California GAMA Priority Basin Project
Krishangi D. Groover, Miranda S. Fram, Zeno F. Levy
2024, Scientific Investigations Report 2024-5019
Groundwater quality in the western part of the Mojave Desert in San Bernardino County, California, was investigated in 2018 as part of the California State Water Resources Control Board Groundwater Ambient Monitoring and Assessment Program Priority Basin Project. The Mojave Basin Domestic-Supply Aquifer study unit (MOBS) region was divided into...
Anaerobic biodegradation of perfluorooctane sulfonate (PFOS) and microbial community composition in soil amended with a dechlorinating culture and chlorinated solvents
Michelle Lorah, Ke He, Lee Blaney, Denise M. Akob, Cassandra Rashan Harris, Andrea K. Tokranov, Zachary Ryan Hopkins, Brian Shedd
2024, Science of the Total Environment (932)
Perfluorooctane sulfonate (PFOS), one of the most frequently detected per- and polyfluoroalkyl substances (PFAS) occurring in soil, surface water, and groundwater near sites contaminated with aqueous film-forming foam (AFFF), has proven to be recalcitrant to many destructive remedies, including chemical oxidation. We investigated the potential...
Chemistry, growth, and fate of the unique, short-lived (2019–2020) water lake at the summit of Kīlauea Volcano, Hawaii
Patricia A. Nadeau, Shaul Hurwitz, Sara Peek, Allan Lerner, Edward F. Younger, Matthew R. Patrick, David Damby, R. Blaine McCleskey, Peter J. Kelly
2024, Geochemistry, Geophysics, Geosystems (25)
Less than a year after the 2018 Kīlauea caldera collapse and eruption, water appeared in newly deepened Halemaʻumaʻu crater. The lake—unprecedented in the written record—grew to a depth of ∼50 m before lava from the December 2020 eruption boiled it away. Surface water heightened concerns of potential phreatic...
Trace silicon determination in biological samples by inductively coupled plasma mass spectrometry (ICP-MS): Insight into volatility of silicon species in hydrofluoric acid digests for optimal sample preparation and introduction to ICP-MS
Zikri Arslan, Heather A. Lowers
2024, Minerals (14)
A method for the determination of trace levels of silicon from biological materials by inductively coupled plasma mass spectrometry (ICP-MS) has been developed. The volatility of water-soluble silicon species, hexafluorosilicic acid (H2SiF6), and sodium metasilicate (Na2SiO3) was investigated by evaporating respective solutions (50 µg/mL silicon) in nitric acid (HNO3),...
Predicting redox conditions in groundwater at a national scale using random forest classification
Anthony J. Tesoriero, Susan Wherry, Danielle Dupuy, Tyler D. Johnson
2024, Environmental Science and Technology (58) 5079-5092
Redox conditions in groundwater may markedly affect the fate and transport of nutrients, volatile organic compounds, and trace metals, with significant implications for human health. While many local assessments of redox conditions have been made, the spatial variability of redox reaction rates makes the determination of redox conditions at regional...
An update of hydrologic conditions and distribution of selected constituents in water, eastern Snake River aquifer and perched groundwater zones, Idaho National Laboratory, Idaho, emphasis 2019–21
Kerri C. Treinen, Allison R. Trcka, Jason C. Fisher
2024, Scientific Investigations Report 2023-5128
Since 1952, wastewater discharged to infiltration ponds (also called “percolation ponds”) and disposal wells at the Idaho National Laboratory (INL) has affected water quality in the eastern Snake River Plain (ESRP) aquifer and perched groundwater zones underlying the INL. The U.S. Geological Survey (USGS), in cooperation with the U.S. Department...
Analyzing spatial distributions and alignments of pitted cone features in Utopia Planitia on Mars
Mackenzie M. Mills, Alfred S. McEwen, Amanda N. Hughes, Ji-Eun Kim, Chris Okubo
2024, Icarus (408)
Martian geomorphology and surface features provide links to understanding past geologic processes such as fluid movement, local and regional tectonics, and feature formation mechanisms. Pitted cones are common features in the northern plains basins of Mars. They have been proposed to have formed from upwelling volatile-rich fluids, such as magma or water-sediment slurries. In...
Occurrence of mixed organic and inorganic chemicals in groundwater and tapwater, town of Campbell, Wisconsin, 2021–22
Kristin M. Romanok, Shannon M. Meppelink, Paul M. Bradley, Sara E. Breitmeyer, Lee Donahue, Mark P. Gaikowski, Randy K. Hines, Kelly L. Smalling
2023, Open-File Report 2023-1088
In response to previous reports of per- and polyfluoroalkyl substances (PFAS) contamination in French Island’s (located in the Mississippi River within the town of Campbell, Wisconsin) primary source of drinking water, 11 locations were sampled by the U.S. Geological Survey (USGS) in October 2021 to assess the potential presence of...
Editorial: Remote sensing of volcanic gas emissions from the ground, air, and space
Christoph Kern, Santiago Arellano, Robin Campion, Silvana Hidalgo, Ryunosuke Kazahaya
2023, Frontiers in Earth Science (11)
When magma rises in volcanic systems, volatile species exsolve from the melt and are outgassed to the atmosphere. The melt composition and temperature, depth at which degassing occurs, extent of gas-water-rock interactions, and volume of ascending magma are all factors that determine the composition and rate of gas emissions at...
Geology, hydrology, and groundwater contamination in the vicinity of Central Chemical facility, Hagerstown, Maryland
Trevor P. Needham, Alex R. Fiore, Scott W. Ator, Jeff P. Raffensperger, Madison B. Smith, Nicole M. Bellmyer, Caitlyn M. Dugan, Carol J. Morel
2023, Scientific Investigations Report 2022-5011
The soil and groundwater at the Central Chemical facility, Hagerstown, Maryland, are contaminated due to the blending and production of pesticides and fertilizers during much of the 20th century. Remedial investigations focus on two operable units (OU) consisting of the surface soils and waste disposal lagoon (OU-1) and the groundwater...
Pre-eruptive outgassing and pressurization, and post-fragmentation bubble nucleation, recorded by vesicles in breadcrust bombs from vulcanian activity at Guagua Pichincha Volcano, Ecuador
Mathieu Colombier, Michael Manga, Heather M. Wright, Benjamin Bernard, Rebecca deGraffenried, Francisco Caceres, Pablo Samaniego, Jeremie Vasseur, K Jakata, Paul Cook, Donald B. Dingwell
2023, Journal of Geophysical Research - Solid Earth (128)
Breadcrust bombs formed during Vulcanian eruptions are assumed to originate from the shallow plug or dome. Their rim to core texture reflects the competition between cooling and degassing timescales, which results in a dense crust with isolated vesicles contrasting with a highly vesicular vesicle network in the...
Earth’s mantle composition revealed by mantle plumes
Dominique Weis, Karen Harpp, Lauren N Harrison, Maud Boyet, Catherine Chauvel, Cinzia Farnetani, Val Finlayson, Kanai Lee, Rita Parai, Anat Shahar, Nicole Williamson
2023, Nature Reviews in Earth and Environment (4) 604-625
Mantle plumes originate at depths near the core−mantle boundary (~2,800 km). As such, they provide invaluable information about the composition of the deep mantle and insight into convection, crustal formation, and crustal recycling, as well as global heat and volatile budgets. In this Review, we discuss the effectiveness and challenges...
Photochemical mobilization of dissolved hydrocarbon oxidation products from petroleum contaminated soil into a shallow aquifer activate human nuclear receptors
Phoebe Zito, Barbara A. Bekins, Dalma Martinović-Weigelt, Maxwell L. Harsha, Katherine E. Humpal, Jared J. Trost, Isabelle M. Cozzarelli, Lynn R. Mazzoleni, Simeon K. Schum, David C. Podgorski
2023, Journal of Hazardous Materials (459)
Elevated non-volatile dissolved organic carbon (NVDOC) concentrations in groundwater monitoring wells under oil-contaminated hydrophobic soils originating from a pipeline rupture at the National Crude Oil Spill & Natural Attenuation Research Site near Bemidji, MN are documented.. We hypothesized the elevated NVDOC is comprised of water-soluble photooxidation products transported from the...
A Monte-Carlo chemical budget approach to assess ambient groundwater flow in bedrock open boreholes
Philip Harte
2023, Groundwater Monitoring and Remediation (44) 57-71
In low-permeability rocks, ambient groundwater flow in open boreholes may go undetected using conventional borehole-flowmeter tools and alternative approaches may be needed to identify flow. Understanding ambient flow in open boreholes is important for tracking of cross contamination in groundwater. Chlorinated volatile organic compound (CVOC)...
Viscous relaxation of Oort and Edgeworth craters on Pluto: Possible indicators of an epoch of early high heat flow
W. B. McKinnon, Michael T. Bland, K. Singer, P. M. Schenk, S. Robbins
2023, Journal of Geophysical Research: Planets (128)
Impact craters, with their well-defined initial shapes, have proven useful as heat flow probes of a number of icy bodies, provided characteristics of viscous relaxation can be identified. For Pluto's numerous craters, such identifications are hampered/complicated by infilling and erosion by mobile volatile ices, but not in...
Tracking carbon from subduction to outgassing along the Aleutian-Alaska Volcanic Arc
Taryn Lopez, Tobias P. Fischer, Terry Plank, Alberto Malinverno, Andrea Rizzo, Daniel J. Rasmussen, Elizabeth Cottrell, Cynthia Werner, Christoph Kern, Deborah Bergfeld, Tehnuka Ilanko, Janine L. Andrys, Katherine A. Kelley
2023, Science Advances (9)
Subduction transports volatiles between Earth’s mantle, crust, and atmosphere, ultimately creating a habitable Earth. We use isotopes to track carbon from subduction to outgassing along the Aleutian-Alaska Arc. We find substantial along-strike variations in the isotopic composition of volcanic gases, explained by different recycling efficiencies of subducting carbon to the...
Selenium hazards in the Salton Sea environment—Summary of current knowledge to inform future wetland management
Michael R. Rosen, Susan E.W. De La Cruz, Krishangi D. Groover, Isa Woo, Sarah A. Roberts, Melanie J. Davis, Cristiana Y. Antonino
2023, Scientific Investigations Report 2023-5042
Quaternary marine and continental shales in the western United States are sources of selenium that can be loaded into the aquatic environment through mining, agricultural, and energy production processes. The mobilization of selenium from shales through agricultural irrigation has been recognized since the 1930s; however, discovery of deformities in birds...
Distribution of rare earth and other critical elements in lignites from the Eocene Jackson Group, Texas
James C. Hower, Peter D. Warwick, Bridget R. Scanlon, Robert C. Reedy, Tristan M. Childress
2023, International Journal of Coal Geology (275)
Coal is increasingly evaluated as a source of rare earth elements (REEs) in the United States to address the overreliance on imported REEs. The objective of this study was to assess the distribution of REEs in lignites from selected mining areas in the Texas...
Biotic and abiotic factors shaping bat activity in Maryland soybean fields
Lauren D. Maynard, W. Mark Ford, John D. Parker, Susan R. Whitehead
2023, Ecosphere (14)
Bats are important pest control agents in agriculture. Yet, the underlying fine-scale biotic and abiotic mechanisms that drive their foraging behaviors and responses to insect outbreaks are unclear. Herbivore-induced plant volatiles (HIPVs) can attract both invertebrate and vertebrate natural enemies that use the chemical plant cues to locate insect prey....
Masting is uncommon in trees that depend on mutualist dispersers in the context of global climate and fertility gradients
Tong Qiu, Marie-Claire Aravena Acuna, Davide Ascoli, Yves Bergeron, Michal Mogdziewicz, Thomas Biovin, Raul Bonal, Thomas Caignard, Maxime Cailleret, Rafael Calama, Sergio Donoso Calderon, J. Julio Camarero, Chia-Hua Chang-Yang, Jerome Chave, Francesco Chianucci, Benoit Courbaud, Andrea Cutini, Adrian Das, Nicolas Delpierre, Sylvain Delzon, Michael Dietze, Laurent Dormont, Josep Maria Espelta, Timothy J. Fahey, William Farfar-Rios, Jerry F. Franklin, Catherine A. Gehring, Gregory S. Gilbert, Georg Gratzner, Cathryn H. Greenberg, Arthur Guignabert, Qinfeng Guo, Andrew Hacket-Pain, Arndt Hampe, Qingmin Han, Jan Holik, Kazuhiko Hoshizaki, Ines Ibanez, Jill F. Johnstone, Valentin Journee, Thomas Kitzberger, Jean Knops, Georges Kunstler, Hiroko Kurokawa, Jonathan G. A. Lageard, Jalene LaMontagne, Francois Lefevre, Theodor Leininger, Jean-Marc Limousin, James A. Lutz, Diana Macias, Anders Marell, Eliot J. B. McIntire, Christopher Moore, Emily V. Moran, Renzo Motta, Jonathan A. Myers, Thomas A. Nagel, Shoji Naoe, Mohoko Noguchi, Michio Oguro, Robert Parmenter, Ignacio M. Perez-Ramos, Lukasz Piechnik, Tomasz Podforski, John Poulsen, Miranda Redmond, Chad Reid, Kyle C. Rodman, Fransisco Rodrigues-Sanchez, Pavel Samonil, Javier Sanguinetto, Lane Scher, Barbara Seget, Shubhi Sharma, Mitsue Shibata, Miles Silman, Michael A. Steele, Nathan L. Stephenson, Jacob N. Straub, Samantha Sutton, Jennifer J. Swenson, Margaret Swift, Peter A. Thomas, Maria Uriarte, Giorgio Vacchiano, Amy V. Whipple, Thomas G. Whitham, Andreas Wion, Joseph Wright, Kai Zhu, Jess Zimmermann, Magdalena Zywiec, James S. Clark
2023, Nature Plants (9) 1044-1056
The benefits of masting (volatile, quasi-synchronous seed production at lagged intervals) include satiation of seed predators, but these benefits come with a cost to mutualist pollen and seed dispersers. If the evolution of masting represents a balance between these benefits and costs, we expect mast avoidance...
Distribution of chlorinated volatile organic compounds and per- and polyfluoroalkyl substances in groundwater and surface water at the former Naval Air Warfare Center, West Trenton, New Jersey, 2018
Alex R. Fiore, Thomas E. Imbrigiotta, Timothy P. Wilson
2023, Open-File Report 2023-1022
Groundwater wells and surface-water storm sewers contaminated with volatile organic compounds (VOCs) and per- and polyfluoroalkyl substances (PFASs) at the former Naval Air Warfare Center (NAWC) site in West Trenton, New Jersey were sampled in 2018 as part of the Navy’s long-term monitoring program. Trichloroethene (TCE), cis-1,2-dichloroethene (cisDCE), and vinyl...
