Overview, chronology, and impacts of the 2016–2017 eruption of Bogoslof volcano, Alaska
Michelle L. Coombs, Kristi L. Wallace, Cheryl Cameron, John J. Lyons, Aaron Wech, Kim M. Angeli, Peter Cervelli
2019, Bulletin of Volcanology (81)
The 2016–2017 eruption of Bogoslof volcano, a back-arc shallow submarine volcano in Alaska’s Aleutian arc, began in December 2016 and included 70 explosive events and at least two episodes of subaerial dome building. Because the volcano had no local monitoring stations during the eruption, a combination of distant seismic stations,...
Precision of VS30 values derived from noninvasive surface wave methods at 31 sites in California
Alan K. Yong, Antony Martin, Jack Boatwright
2019, Soil Dynamics and Earthquake Engineering (127)
We study the inter- and intra-method variability of VS30 results by inverting/forward-modeling individual dispersion data for 31 seismographic stations located in California where combinations of surface-wave methods were applied and the minimum recorded wavelength from each method satisfies the 30-meter depth criteria. These methods consist of noninvasive geophysical (active...
Streambed flux measurement informed by distributed temperature sensing leads to a significantly different characterization of groundwater discharge
Troy E. Gilmore, Mari-Vaughn V. Johnson, J Korus, Aaron R. Mittelstet, Martin A. Briggs, V. Zlotnik, S. Corcoran
2019, Water (11)
Groundwater discharge though streambeds is often focused toward discrete zones, indicating that preliminary reconnaissance may be useful for capturing the full spectrum of groundwater discharge rates using point-scale quantitative methods. However, many direct-contact reconnaissance techniques can be time consuming, and remote sensing (e.g. thermal infrared) typically does not penetrate the...
Effects of invasive plants on fire regimes and postfire vegetation diversity in an arid ecosystem
Emma C. Underwood, Robert C. Klinger, Matthew L. Brooks
2019, Ecology and Evolution (9) 12421-12435
We assessed the impacts of co‐occurring invasive plant species on fire regimes and postfire native communities in the Mojave Desert, western USA. We analyzed the distribution and co‐occurrence patterns of three invasive annual grasses (Bromus rubens, Bromus tectorum, and Schismus spp.) known to alter fuel conditions and community structure, and...
Changes in long-term water quality of Baltimore streams are associated with both gray and green infrastructure
Alexander J. Reisinger, Ellen L Woytowitz, Emily H. Majcher, Emma J. Rosi, Kenneth T. Belt, Jonathan M. Duncan, Sujay S. Kaushal, Peter M. Groffman
2019, Limnology and Oceanography journal (64) S60-S76
The steadily rising global urban population has placed substantial strain on urban water quality, and this strain is projected to increase for the foreseeable future. Considerable attention has been given to the hydrological and physico-chemical effects of urbanization on stream ecosystems. However, due to the relative infancy of the field...
Adapting to climate change: Guidance for the management of inland glacial lake fisheries
R.W. Tingley, Craig P. Paukert, G. G. Sass, P. C. Jacobson, G. J. A. Hansen, Abigail Lynch, P. D. Shannon
2019, Lake and Reservoir Management (35) 435-452
Climate change is altering glacial lake fisheries in the United States, presenting a complex challenge for fisheries managers. Here we provide a regional perspective to guide management of heterogeneous and yet interdependent fishery resources in glacial lakes of the upper Midwest. Our main objective was to promote the adaptation of...
2019 Disaster Relief Act: USGS recovery activities
Jo Ellen Hinck, Joseph Stachyra
2019, Fact Sheet 2019-3066
The Additional Supplemental Appropriations for Disaster Relief Act of 2019 (H.R. 2157) was signed by the President on June 6, 2019. The U.S. Geological Survey received $98.5 million for repair and replacement of facilities and equipment, collection of high-resolution elevation data in affected areas, and scientific assessments to support recovery...
Overhauling ocean spatial planning to improve marine megafauna conservation
Ana M. M. Sequeira, Graeme C. Hays, David W. Sims, Victor M. Eguiluz, Jorge P. Rodriguez, Michelle R. Heupel, Robert G. Harcourt, Hannah J. Calich, Nuno Queiroz, Daniel P. Costa, Juan Fernandez-Gracia, Luciana C. Ferreira, Simon D. Goldsworthy, Mark Hindell, Mary-Anne Lea, Mark G. Meekan, Anthony M. Pagano, Scott A. Shaffer, Julia Reisser, Michele Thums, Michael J Weise, Carlos M. Duarte
2019, Frontiers in Marine Science (6)
Tracking data have led to evidence-based conservation of marine megafauna, but a disconnect remains between the many thousands of individual animals that have been tracked and the use of these data in conservation and management actions. Furthermore, the focus of most conservation efforts is within Exclusive Economic Zones despite the...
Copula theory as a generalized framework for flow-duration curve-based streamflow estimates in ungaged and partially gaged catchments
Scott C. Worland, Scott Steinschneider, William H. Farmer, William H. Asquith, Rodney Knight
2019, Water Resources Research (55) 9378-9397
Flow‐duration curve (FDC) based streamflow estimation methods involve estimating an FDC at an ungaged or partially gaged location and using the time series of nonexceedance probabilities estimated from donor streamgage sites to generate estimates of streamflow. We develop a mathematical framework to illustrate the connection between copulas and prior FDC‐based...
Tidal erosion and upstream sediment trapping modulate records of land-use change in a formerly glaciated New England estuary
Justin L. Shawler, Christopher J. Hein, Elizabeth A Canuel, James M Kaste, Gregory G Fitzsimons, Ioannis Y. Georgiou, Debra A. Willard
2019, Anthropocene Coasts (2) 340-361
Land clearing, river impoundments, and other human modifications to the upland landscape and within estuarine systems can drive coastal change at local to regional scales. However, as compared with mid-latitude coasts, the impacts of human modifications along sediment-starved formerly glaciated coastal landscapes are relatively understudied. To address this...
Optimization of salt marsh management at the Rhode Island National Wildlife Refuge Complex through use of structured decision making
Hilary A. Neckles, James E. Lyons, Jessica L. Nagel, Susan C. Adamowicz, Toni Mikula, Nicholas T. Ernst
2019, Open-File Report 2019-1103
Structured decision making is a systematic, transparent process for improving the quality of complex decisions by identifying measurable management objectives and feasible management actions; predicting the potential consequences of management actions relative to the stated objectives; and selecting a course of action that maximizes the total benefit achieved and balances...
The LArge-n Seismic Survey in Oklahoma (LASSO) experiment
S. Dougherty, Elizabeth S. Cochran, R. M. Harrington
2019, Seismological Research Letters (90) 2015-2057
In 2016, the U.S. Geological Survey deployed more than 1,800 vertical-component nodal seismometers in Grant County, Oklahoma to study induced seismic activity associated with production of the Mississippi Limestone Play. The LArge-n Seismic Survey in Oklahoma (LASSO) array operated for approximately one month, covering a 25-km-by-32-km region with a nominal...
Partly cloudy with a chance of lava flows: Forecasting volcanic eruptions in the 21st century
Michael P. Poland, Kyle R. Anderson
2019, Journal of Geophysical Research (1)
A primary goal of volcanology is forecasting hazardous eruptive activity. Despite much progress over the last century, however, volcanoes still erupt with no detected precursors, lives and livelihoods are lost to eruptive activity, and forecasting the onsets of eruptions remains fraught with uncertainty. Long‐term forecasts are generally...
Late Quaternary slip rate of the Central Sierra Madre fault, southern California: Implications for slip partitioning and earthquake hazard
Reed J. Burgette, Austin Hanson, Katherine M. Scharer, Tammy M. Rittenour, Devin McPhillips
2019, Earth and Planetary Science Letters (530)
The Sierra Madre fault system accommodates contraction within a large restraining bend area of the San Andreas fault along the northern margin of the Los Angeles metropolitan area in Southern California. Reverse slip along this fault system during earthquakes controls growth of the San Gabriel Mountains and poses a significant...
Coseismic slip and early afterslip of the M6.0 August 24, 2014 South Napa, California, earthquake
Frederick Pollitz, Jessica R. Murray, Sarah E. Minson, Charles W. Wicks Jr., Jerry L. Svarc, Benjamin A. Brooks
2019, Journal of Geophysical Research (124) 11728-11747
We employ strong motion seismograms and static offsets from the Global Positioning System, Interferometric Synthetic Aperture Radar, and other measurements in order to derive a coseismic slip and afterslip model of the M6.0 24 August 2014 South Napa earthquake. This earthquake ruptured an ∼13‐km‐long portion of...
Summary of hydrologic testing, wellbore-flow data, and expanded water-level and water-quality data, 2011–15, Fort Irwin National Training Center, San Bernardino County, California
Joseph M. Nawikas, Jill N. Densmore, David R. O'Leary, David C. Buesch, John A. Izbicki
2019, Scientific Investigations Report 2019-5091
In view of the U.S. Army’s historical reliance and plans to increase demands on groundwater to supply its operations at Fort Irwin National Training Center (NTC), California, coupled with the continuing water-level declines in some developed groundwater basins as a result of pumping, the U.S. Geological Survey (USGS), in cooperation...
Noninvasive identification of cryptic herpetofauna from fecal samples: A novel approach pairing conservation dog surveys and genetic analysis
MJ Statham, DA Woollett, S Fresquez, John M. Pfeiffer, Jonathan Q. Richmond, A Whitelaw, NL Richards, Michael F. Westphal, BN Sacks
2019, Journal of Wildlife Management (84) 66-74
Noninvasive fecal sampling combined with genetic analysis is a powerful technique allowing the study of elusive or otherwise difficult to monitor species without the need for direct contact. While this method is widely used in birds and mammals, it has never been successfully applied on a large scale in reptiles....
Eruption age and duration of the ~9 km3 Burney Mountain dacite dome complex, northern California
Drew T. Downs, Michael A. Clynne, Duane E. Champion, L.J. Patrick Muffler
2019, Geological Society of America Bulletin
At ~9 km3, the six dacite domes of Burney Mountain (db1–db6) constitute the most voluminous Quaternary dome complex in the Cascades volcanic arc. Whole-rock geochemistry, electron microprobe, and petrographic data indicate that the domes are magmatically related, which, when integrated with geomorphology and stratigraphy, indicate early (db1, db2, db3)...
Responses of the odd couple Carquinez, CA, suspension bridge during the Mw6.0 south Napa earthquake of August 24, 2014
Mehmet Celebi, S. Farid Ghahari, Ertugrul Taciroglu
2019, Journal of Civil Structural Health Monitoring (9) 719-739
The behavior of the suspension bridge in Carquinez, CA, during the Mw6.0 24 August 2014 South Napa, CA earthquake is studied. Utilizing data from an extensive array of accelerometers that recorded the earthquake-excited motions, dynamic characteristics such as modes, corresponding frequencies and damping are identified and...
Study design and methods for a wetland condition assessment on U.S. Fish and Wildlife Service fee-title lands in the Prairie Pothole Region of North Dakota, South Dakota, and Montana, USA
Brian Tangen, Sheel Bansal, Rachel R. Fern, Edward S. DeKeyser, Christina L. M. Hargiss, David M. Mushet, Cami S. Dixon
2019, Open-File Report 2019-1118
The U.S. Fish and Wildlife Service (FWS) manages wetlands and grasslands for wildlife habitat throughout the central North American Prairie Pothole Region (PPR). PPR wetlands, or potholes, are widely recognized as critical habitats for North American migratory waterfowl, waterbirds, and other wildlife. Potholes also provide other ecosystem services such as...
Precision mapping of snail habitat provides a powerful indicator of human schistosomiasis transmission
Chelsea L. Wood, Susanne H. Sokolow, Isabel J. Jones, Andrew J Chamberlin, Kevin D. Lafferty, Armand M. Kuris, Merlijn M. T. Jocque, Skylar R. Hopkins, Grant Adams, Julia C Buck, Andrea J Lund, Ana E Garcia-Vedrenne, Evan Fiorenza, Jason R. Rohr, Fiona Allan, Bonnie Webster, Muriel Rabone, Joanne P Webster, Lydie Bandagny, Raphael Ndione, Simon Senghor, Anne-Marie Schacht, Nicolas Jouanard, Gilles Riveau, Giulio A. De Leo
2019, PNAS (449) 23182-23191
Recently, the World Health Organization recognized that efforts to interrupt schistosomiasis transmission through mass drug administration have been ineffective in some regions; one of their new recommended strategies for global schistosomiasis control emphasizes targeting the freshwater snails that transmit schistosome parasites. We sought to identify robust indicators that would enable...
Impact of down-dip rupture limit and high stress drop subevents on coseismic land-level change during Cascadia megathrust earthquakes
Erin A. Wirth, Arthur D. Frankel
2019, Geophysical Research Letters (109) 2187-2197
Seismic hazard associated with Cascadia megathrust earthquakes is strongly dependent on the landward rupture extent and heterogeneous fault properties. We use 3-D numerical simulations and a seismic velocity model for Cascadia to estimate coseismic deformation due to ~M9 earthquake scenarios. Our earthquake source model is based on observations of the...
Exploring trends in wet-season precipitation and drought indices in wet, humid and dry regions
Chris Funk, Laura Harrison, Lisa Alexander, Pete Peterson, Ali Behrangi, Gregory Husak
2019, Environmental Research Letters (14)
This study examines wet season droughts using eight products from the FROGS database. The study begins by evaluating wet season precipitation totals and wet day counts at seasonal and decadal time scales. While we find a high level of agreement among the products at a seasonal timescale, evaluations of 10-year...
Quantitative guidance for efficient vertical flow measurements at the sediment-water interface using temperature-depth profiles
D. Irvine, B. Kurylyk, Martin A. Briggs
2019, Hydrological Processes (34) 649-661
Upward discharge to surface water bodies can be quantified using analytical models based on temperature-depth (T-z) profiles. The use of sediment T-z profiles is attractive as discharge estimates can be obtained using point-in-time data that are collected inexpensively and rapidly. Previous studies have identified that T-z methods can only be...
Geologic map of the Ferncliff and Louisa quadrangles, Louisa, Fluvanna, and Goochland Counties, Virginia
William C. Burton, Richard W. Harrison, Helen F. Malenda, Frank J. Pazzaglia, E. Allen Crider, Jr.
2019, Scientific Investigations Map 3429
The area encompassed by the geologic map of the Ferncliff and Louisa, Va., 7.5-minute quadrangles includes the hypothetical surface projection of the Quail fault, which is the subsurface fault that was responsible for the 2011 magnitude 5.8 (M5.8) Mineral, Va., earthquake. The mapping shows that the Quail fault appears to...
