Southeast
Lynne Carter, Adam J. Terando, Kirstin Dow, Kevin Hiers, Kenneth E. Kunkel, Aranzazu R. Lascurain, Doug Marcy, Michael J. Osland, Paul Schramm
David Reidmiller, C. W. Avery, D. R. Easterling, K. E. Kunkel, K. L. M. Lewis, T. K. Maycock, B. C. Stewart, editor(s)
2018, Report, Impacts, Risks, and Adaptation in the United States: Fourth National Climate Assessment, Volume II
The Southeast includes vast expanses of coastal and inland low-lying areas, the southern portion of the Appalachian Mountains, numerous high-growth metropolitan areas, and large rural expanses. These beaches and bayous, fields and forests, and cities and small towns are all at risk from a changing climate. While...
U.S. Caribbean
William A. Gould, Ernesto L. Diaz, Nora L. Alvarez-Berrios, Felix Aponte-Gonzalez, Wayne Archibald, Jared H. Bowden, Lisamarie Carrubba, Wanda Crespo, Stephen J. Fain, Grizelle Gonzalez, Annmarie Goulbourne, Eric Harmsen, Eva Holupchinski, Azad H. Khalyani, James P. Kossin, Amanda J. Leinberger, Vanessa I. Marrero-Santiago, Odalys Martinez-Sanchez, Kathleen McGinley, Pablo Mendez-Lazaro, Julio Morrell, Melissa Melendez Oyola, Isabel K. Pares-Ramos, Roger Pulwarty, William V. Sweet, Adam J. Terando, Sigfredo Torres-González
David Reidmiller, C. W. Avery, D. R. Easterling, K. E. Kunkel, K. L. M. Lewis, T. K. Maycock, B. C. Stewart, editor(s)
2018, Report, Impacts, Risks, and Adaptation in the United States: Fourth National Climate Assessment, Volume II
Historically, the U.S. Caribbean region has experienced relatively stable seasonal rainfall patterns, moderate annual temperature fluctuations, and a variety of <a class="glossarizer_replaced" title="A weather event that is rare at a particular place and time of year, including, for example, heat waves, cold waves, heavy rains, periods of drought and flooding, and...
Northern Great Plains
Richard T. Conant, Doug Kluck, Mark T. Anderson, Andrew Badger, Barbara M. Boustead, Justin D. Derner, Laura Farris, Michael Hayes, Ben Livneh, Shannon McNeeley, Dannele Peck, Martha Shulski, Valerie Small
David Reidmiller, C. W. Avery, D. R. Easterling, K. E. Kunkel, K. L. M. Lewis, T. K. Maycock, B. C. Stewart, editor(s)
2018, Report, Impacts, Risks, and Adaptation in the United States: Fourth National Climate Assessment, Volume II
In the Northern Great Plains, the timing and quantity of both precipitation and runoff have important consequences for water supplies, agricultural activities, and energy production. Overall, climate projections suggest that the number of heavy precipitation events (events with greater than 1 inch per day of rainfall) is projected to increase....
Shrimp U-Pb zircon and opal geochronology, isotope geochemistry, and genesis of the super large Be deposit at Spor Mountain, Utah, USA
Nora K. Foley, Robert A. Ayuso
2018, Conference Paper, Magmatism of the Earth and related Strategic Metal Deposits
Ongoing studies of the Spor Mountain beryllium (Be) deposit are focused on (1) characterizing the role of igneous rocks in the genesis of the ore zones, (2) determining the timing and duration of magmatic-hydrothermal events, and (3) establishing processes related to beryllium transport and accumulation. The Spor Mountain Formation (SMF)...
Preliminary 2018 national seismic hazard model for the conterminous United States
Mark D. Petersen, Allison Shumway, Peter M. Powers, Charles Mueller, Sanaz Rezaeian, Morgan P. Moschetti, Daniel E. McNamara, Eric M. Thompson, Oliver S. Boyd, Nico Luco, Susan M. Hoover, Kenneth S. Rukstales
2018, Conference Paper, Earthquake Engineering. National Conference. 11TH 2018. (11NCEE) (12 Vols) Integrating Science, Engineering, and Policy
The 2014 U.S. Geological Survey national seismic hazard model for the conterminous U.S. will be updated in 2018 and 2020 to coincide with the Building Seismic Safety Council’s Project 17 timeline for development of new building code design criteria. The two closely timed updates are planned to allow more time...
Airborne geophysical characterizationof geologic structure in a mountain headwater system, upper East River, Colorado
Burke J. Minsley, Lyndsay B. Ball
2018, Conference Paper
Geologic controls on groundwater flow, particularly in tectonically and topographically complex mountainous terrain, can be difficult to quantify without a detailed understanding of the regional subsurface geologic structure. This structure can influence the magnitude of groundwater flow through the mountain block, which in turn impacts groundwater composition and the flux...
Crisis remote sensing during the 2018 lower East Rift Zone eruption of Kīlauea Volcano
Michael H. Zoeller, Matthew R. Patrick, Christina A. Neal
2018, Photogrammetric Engineering & Remote Sensing (84) 749-751
Kīlauea Volcano, Hawai‘i, is renowned as one of the most active and closely monitored volcanoes on Earth. Scores of seismometers and deformation sensors form an array across the volcano to detect subsurface magmatic activity, and ground observers track eruptions on the surface. In addition to this dense ground-based monitoring, remote...
Seasonal surveillance confirms the range expansion of Aedes japonicus japonicas (Theobald) (Diptera: Culicidae) to the Hawaiian Islands of Oahu and Kauai
James Harwood, Jodi Fiorenzanoa, Elizabeth Gerardoa, Theodore Black, Jeomhee Hasty, Dennis Lapointe
2018, Journal of Asia-Pacific Entomology (21) 1366-1372
The Asian bush mosquito, Aedes japonicus japonicus (Theobald) was not known to occur in the Hawaii archipelago until it was identified on the island of Hawaii in 2003. This mosquito species remained undetected on the neighboring islands for 8 years before it was discovered at the Honolulu International Airport on Oahu...
Coseismic sackungen in the New Madrid seismic zone, USA
Jaime E. Delano, Ryan D. Gold, Richard W. Briggs, Randall W. Jibson
2018, Geophysical Research Letters (45) 13258-13268
High‐resolution lidar reveals newly recognized evidence of strong shaking in the New Madrid seismic zone in the central United States. We mapped concentrations of sackungen (ridgetop spreading features) on bluffs along the eastern Mississippi River valley in northwestern Tennessee that likely form or are reactivated during large earthquakes. These sackungen...
Geologic map and database of the Chocolate Mountain Aerial Gunnery Range, Riverside and Imperial Counties, California
Robert E. Powell, Robert J. Fleck, Pamela M. Cossette
2018, Open-File Report 2018-1191
The northwest-trending Chocolate Mountains are situated along the northeastern margin of the southern Salton Trough. The Chocolate Mountain Aerial Gunnery Range occupies most of the 75-km-long part of the Chocolate Mountains that lies between Salt Creek to the north and California State Highway 78 to the south. Mapping studies in...
Geologic map of the Pagosa Springs 7.5' quadrangle, Archuleta County, Colorado
David W. Moore, David J. Lidke
2018, Scientific Investigations Map 3419
The geologic map of the Pagosa Springs 7.5’ quadrangle in southwestern Colorado includes the town of Pagosa Springs that is partly known for its hot springs. The quadrangle is southwest of the San Juan volcanic mountains (Oligocene) and north of the San Juan Basin. All bedrock units exposed in the map...
Updated statewide abundance estimates for the Florida manatee
Jeffrey A. Hostetler, Holly H. Edwards, Julien Martin, Paul Schueller
2018, Technical Report 23
Knowing how many manatees live in Florida is critical for conservation and management of this threatened species. Martin et al. (2015) flew aerial surveys in 2011–2012 and estimated abundance in those years using advanced techniques that incorporated multiple data sources. We flew additional aerial surveys in 2015–2016 to count manatees...
Real-time streambed scour monitoring at two bridges over the Gunnison River in western Colorado, 2016–17
Mark F. Henneberg
2018, Scientific Investigations Report 2018-5123
The Colorado Department of Transportation maintains roadways crossing over large streams and rivers where sediment transport and channel alignment changes can affect the structural stability of bridges. Structural stability during and immediately after peak streamflow can be assessed by measuring streambed scour; however, placing personnel or boats in the water...
Simulation of groundwater storage changes in the Quincy Basin, Washington
Lonna M. Frans, Sue C. Kahle, Alison E. Tecca, Theresa D. Olsen
2018, Scientific Investigations Report 2018-5162
The Miocene Columbia River Basalt Group and younger sedimentary deposits of lacustrine, fluvial, eolian, and cataclysmic-flood origins compose the aquifer system of the Quincy Basin in eastern Washington. Irrigation return flow and canal leakage from the Columbia Basin Project have caused groundwater levels to rise substantially in some areas....
The Puʻu ʻŌʻō eruption of Kīlauea Volcano, Hawai‘i—Episode 21 through early episode 48, June 1984–April 1987
Tim R. Orr, George E. Ulrich, Christina Heliker, Liliana G. DeSmither, John P. Hoffmann
2018, Scientific Investigations Report 2018-5109
The Pu‘u ‘Ō‘ō eruption from the middle East Rift Zone of Kīlauea Volcano began in January 1983 with intermittent activity along several fissures. By June 1983, the eruption had localized at the Pu‘u ‘Ō‘ō vent and the activity settled into an increasingly regular pattern of brief eruptive episodes characterized by...
Measuring SO2 emission rates at Kīlauea Volcano, Hawaii, using an array of upward-looking UV spectrometers, 2014-2017
Tamar Elias, Christoph Kern, Keith A. Horton, A. J. Sutton, Harold Garbeil
2018, Frontiers in Earth Science (6)
Retrieving accurate volcanic sulfur dioxide (SO2) gas emission rates is important for a variety of purposes. It is an indicator of shallow subsurface magma, and thus may signal impending eruption or unrest. SO2 emission rates are significant for accurately assessing climate impact, and providing context for assessing environmental, agricultural, and...
Lithostratigraphic framework in boreholes from Goldstone Lake and Nelson Lake Basins, Fort Irwin, California
David C. Buesch
David C. Buesch, editor(s)
2018, Open-File Report 2013-1024-D
In 2011 and 2012, the sedimentary basins in the Fort Irwin National Training Center, California, were evaluated for groundwater resources using a variety of techniques, including drilling of boreholes. This study summarizes lithostratigraphic features and deposits in 8 of 10 boreholes drilled in 2 basins located in the western part...
Cenozoic geology of Fort Irwin and vicinity, California
David C. Buesch, David M. Miller, Christopher M. Menges
David C. Buesch, editor(s)
2018, Open-File Report 2013-1024-C
The geology of the Fort Irwin National Training Center in the north-central Mojave Desert, California, provides insights into the hydrology and water resources of the area. The Fort Irwin area is underlain by rocks ranging in age from Proterozoic to Quaternary that have been deformed by faults as young as...
U-Pb geochronology and tectonic implications of a Silurian ash in the Farewell Terrane, Alaska
Dwight Bradley, Julie A. Dumoulin, Dan B. Bradley
Julie A. Dumoulin, editor(s)
2018, Professional Paper 1814-F
The Farewell terrane is an exotic continental fragment in interior Alaska that during the early Paleozoic was the site of a passive margin. We report a 238U/206Pb zircon age of 432.9±3.0 Ma from a Farewell terrane ash in Mt. McKinley quadrangle, Alaska. This age overlaps with prominent detrital zircon age...
Analysis of multi-decadal wetland changes, and cumulative impact of multiple storms 1984 to 2017
Steven H. Douglas, Julie Bernier, Kathryn Smith
2018, Wetlands Ecology and Management (26) 1121-1142
Land-cover classification analysis using Landsat satellite imagery acquired between 1984 and 2017 quantified short- (post-Hurricane Sandy) and long-term wetland-change trends along the Maryland and Virginia coasts between Metompkin Bay, VA and Ocean City, MD. Although there are limited options for upland migration of wetlands in the study area, regression analysis...
Eruptions in sync: Improved constraints on Kīlauea Volcano's hydraulic connection
Matthew R. Patrick, Tim R. Orr, Kyle R. Anderson, Don Swanson
2018, Earth and Planetary Science Letters (507) 50-61
Kīlauea Volcano is an archetype for the complex interactions that can occur between a volcano’s summit and flanks. Decades of monitoring at Kīlauea have demonstrated that magma rises beneath the summit and flows laterally at shallow depths to erupt along the rift zones. Kīlauea’s recent eruptions at Halema‘uma‘u...
Interactive tool to estimate groundwater elevations in central and eastern North Dakota
Rochelle A. Nustad, William C. Damschen, Aldo V. Vecchia
2018, Open-File Report 2018-1185
This report describes an interactive tool (NDakGWtool) in which a statistical model is developed using locally weighted regression to estimate monthly mean groundwater elevations for a specified latitude and longitude, referred to as the “user-specified location.” For each user-specified location, seven models are developed for each month from April through...
Geologic map of the central Beaverhead Mountains, Lemhi County, Idaho, and Beaverhead County, Montana
Karen Lund
2018, Scientific Investigations Map 3413
This geologic map of the central Beaverhead Mountains portrays a complex geologic history of depositional basin development interspersed with deformational events. Generalized geology for young basins, compiled from sources on both sides of the range, is combined with newly mapped bedrock geology to better integrate geologic development of the map...
Simulating the evolution of fluid underpressures in the Great Plains, by incorporation of tectonic uplift and tilting, with a groundwater flow model
Amjad M. J. Umari, Philip H. Nelson, Gary D. Lecain
2018, Geofluids (2018) 1-30
Underpressures (subhydrostatic heads) in the Paleozoic units underlying the Great Plains of North America are a consequence of Cenozoic uplift of the area. Based on tectonostratigraphic data, we have developed a cumulative uplift history with superimposed periods of deposition and erosion for the Great Plains for the period from 40 Ma...
Estimating the societal benefits of carbon dioxide sequestration through peatland restoration
Emily Pindilli, Rachel Sleeter, Dianna M. Hogan
2018, Ecological Economics (154) 145-155
The Great Dismal Swamp National Wildlife Refuge (GDS) is a forested peatland that provides a number of ecosystem services including carbon (C) sequestration. We modeled and analyzed the potential capacity of the GDS to sequester C under four management scenarios: no management, no management with catastrophic fire, current management, and...
