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Modelling the transport and deposition of ash following a magnitude 7 eruption: The distal Mazama tephra Modelling the transport and deposition of ash following a magnitude 7 eruption: The distal Mazama tephra
Volcanic ash transport and dispersion models (VATDMs) are necessary for forecasting tephra dispersal during volcanic eruptions and are a useful tool for estimating the eruption source parameters (ESPs) of prehistoric eruptions. Here we use Ash3D, an Eulerian VATDM, to simulate the tephra deposition from the ~ 7.7 ka climactic eruption of Mount Mazama. We investigate how best to apply a...
Authors
Hannah Maeve Buckland, Larry G. Mastin, Samantha Engwell, Katharine V. Cashman
Movement of white‐tailed deer in contrasting landscapes influences management of chronic wasting disease Movement of white‐tailed deer in contrasting landscapes influences management of chronic wasting disease
Chronic wasting disease (CWD) continues to expand in distribution and prevalence across North America. Upon detection, either for the first time in a novel area or in a region with an existing outbreak, wildlife management agencies are tasked with responding to mitigate the disease. This response often entails creation or modification of a management zone with modified rules and...
Authors
Christopher S. Jennelle, W. David Walter, Joanne Crawford, Christopher S. Rosenberry, Bret D. Wallingford
Microgravity change during the 2008-2018 Kı̄lauea summit eruption: Nearly a decade of subsurface mass accumulation Microgravity change during the 2008-2018 Kı̄lauea summit eruption: Nearly a decade of subsurface mass accumulation
Results from nine microgravity campaigns from Kı̄lauea, Hawaiʻi, spanning most of the volcano's 2008–2018 summit eruption, indicate persistent mass accumulation at shallow levels. A weighted least squares approach is used to recover microgravity results from a network of benchmarks around Kı̄lauea's summit, eliminate instrumental drift, and restore suspected data tares. A total mass of 1...
Authors
Mathijs R. Koymans, Elske de Zeeuw-van Dalfsen, Laslo G. Evers, Michael P. Poland
Boiga irregularis (brown treesnake) Boiga irregularis (brown treesnake)
No abstract available.
Authors
Patrick D Barnhart, Zachary C. Quiogue, Elisabeth Frasch, Diane Vice, Charlene Beverly Hopkins, Amy A. Yackel Adams, Robert Reed, Melia Gail Nafus
Advancing geophysical techniques to image a stratigraphic hydrothermal resource Advancing geophysical techniques to image a stratigraphic hydrothermal resource
Sedimentary-hosted geothermal energy systems are permeable structural, structural-stratigraphic, and/or stratigraphic horizons with sufficient temperature for direct use and/or electricity generation. Sedimentary-hosted (i.e., stratigraphic) geothermal reservoirs may be present in multiple locations across the central and eastern Great Basin of the USA, thereby constituting a potentially...
Authors
Paul Schwering, Carmen Winn, Piyoosh Jaysaval, Hunter Knox, Drew L. Siler, Christian Hardwick, Bridget Ayling, James Faulds, Elijah Mlawsky, Emma McConville, Jack Norbeck, Nicholas Hinz, Gabe Matson, John Queen
The centenary of IAVCEI 1919–2019 and beyond: The people, places, and things of volcano geodesy The centenary of IAVCEI 1919–2019 and beyond: The people, places, and things of volcano geodesy
Over the first century of the International Association of Volcanology and Chemistry of the Earth’s Interior (IAVCEI), volcano geodesy grew from roots as an accidental and incidental system of measurements to an important method for monitoring volcanic activity and forecasting eruptions. The first practitioners in volcano geodesy were experts in other disciplines, and it was not until...
Authors
Michael P. Poland, Elske de Zeeuw-van Dalfsen
Seasonal context of bristly cave crayfish Cambarus setosus habitat use and life history Seasonal context of bristly cave crayfish Cambarus setosus habitat use and life history
Cave crayfishes are important members of groundwater communities, but many cave crayfishes are threatened or endangered. Unfortunately, we lack basic life history and ecological data that are needed for developing conservation plans for most cave crayfishes, especially the role of seasonal and annual fluctuations in structuring populations. Therefore, we determined the seasonal life...
Authors
J.B. Mouser, D.C. Ashley, D.L. Zenter, Shannon K. Brewer
Anaxyrus boreas (boreal toad). Egg predation Anaxyrus boreas (boreal toad). Egg predation
No abstract available..
Authors
Benjamin Lafrance, Nina Moore, David S. Pilliod, Erin L. Muths
A process-model perspective on recent changes in the carbon cycle of North America A process-model perspective on recent changes in the carbon cycle of North America
Continental North America has been found to be a carbon (C) sink over recent decades by multiple studies employing a variety of estimation approaches. However, several key questions and uncertainties remain with these assessments. Here we used results from an ensemble of 19 state-of-the-art dynamic global vegetation models from the TRENDYv9 project to improve these estimates and study...
Authors
Guillermo Murray-Tortarolo, Benjamin Poulter, Rodrigo Vargas, Daniel B. Hayes, Anna M. Michalak, Christopher J. Williams, Lisamarie Windham-Myers, Jonathan Wang, Kimberly Wickland, David Butman, Hanqin Tian, Stephen Sitch, Pierre Friedlingstein, Michael O’Sullivan, Peter Briggs, Vivek Arora, Danielle Lombardozzi, Atul Jain, Wenping Yuan, Roland Seferian, Julia Nabel, Andrea Wiltshire, Almuth Arneth, Sebastian Lienerte, Sonke Zaehle, Vladislov Bastrikov, Daniel Goll, Nicholas Vuichard, Anthony P. Walker, Etushi Kato, Yue Xu, Zhen Zhang, Abishek Chaterjee, Werner A. Kurz
Comparing root cohesion estimates from three models at a shallow landslide in the Oregon Coast Range Comparing root cohesion estimates from three models at a shallow landslide in the Oregon Coast Range
Although accurate root cohesion model estimates are essential to quantify the effect of vegetation roots on shallow slope stability, few means exist to independently validate such model outputs. One validation approach for cohesion estimates is back-calculation of apparent root cohesion at a landslide site with well-documented failure conditions. The catchment named CB1, near Coos Bay...
Authors
Collin Cronkite-Ratcliff, Kevin M. Schmidt, Charlotte Wirion
Seabird vulnerability to oil: Exposure potential, sensitivity, and uncertainty in the northern Gulf of Mexico Seabird vulnerability to oil: Exposure potential, sensitivity, and uncertainty in the northern Gulf of Mexico
The northern Gulf of Mexico (nGoM) is a globally important region for oil extraction and supports a diverse assemblage of marine birds. Due to their frequent contact with surface waters, diverse foraging strategies, and the ease with which oil adheres to feathers, seabirds are particularly susceptible to hydrocarbon contamination. Given the chronic and acute exposure of seabirds to...
Authors
Pamela E. Michael, K. M. Hixson, J.C. Haney, Y.G. Satge, J.S. Gleason, Patrick G.R. Jodice
Microbiome assembly in thawing permafrost and its feedbacks to climate Microbiome assembly in thawing permafrost and its feedbacks to climate
The physical and chemical changes that accompany permafrost thaw directly influence the microbial communities that mediate the decomposition of formerly frozen organic matter, leading to uncertainty in permafrost–climate feedbacks. Although changes to microbial metabolism and community structure are documented following thaw, the generality of post-thaw assembly patterns across...
Authors
Jessica G. Ernakovich, Robyn A. Barbato, Virginia Rich, Christina Schädel, Rebecca E. Hewitt, Stacey Doherty, Emily Whalen, Benjamin Abbott, Jiri Barta, Christina Biasi, Chris Chabot, Jenni Hultman, Christian Knoblauch, Maggie Chui Yim Lau Vetter, Mary-Cathrine Leewis, Susanne Liebner, Rachel Mackelprang, Tullis Onstott, Andreas Richter, Ursel M. E. Schutte, Henri Siljanen, Neslihan Tas, Ina Timling, Tatiana Vishnivetskaya, Mark Waldrop, Matthias Winkel