Publications
Filter Total Items: 1333
Water resources: Implications of changes in temperature and precipitation: Chapter 3
No abstract available.
Authors
Rick R. Raymondi, Jennifer E. Cuhaciyan, Patty Glick, Susan M. Capalbo, Laurie L. Houston, Sarah Shafer, Oliver Grah
Controls on recent Alaskan lake changes identified from water isotopes and remote sensing
High-latitude lakes are important for terrestrial carbon
dynamics and waterfowl habitat driving a need to better
understand controls on lake area changes. To identify the
existence and cause of recent lake area changes in the
Yukon Flats, a region of discontinuous permafrost in north
central Alaska, we evaluate remotely sensed imagery with
lake water isotope compositions and hydroclimatic
paramete
Authors
Lesleigh Anderson, Jean Birks, Jennifer R. Rover, Nikki Guldager
Tourism values for Mexican free-tailed bat (Tadarida brasiliensis mexicana) viewing
Migratory species provide diverse ecosystem services to people, but these values have seldom been estimated rangewide for a single species. In this article, we summarize visitation and consumer surplus for recreational visitors to viewing sites for the Mexican free-tailed bat (Tadarida brasiliensis mexicana) throughout the Southwestern United States. Public bat viewing opportunities are available
Authors
Kenneth J. Bagstad, Ruscena Widerholdt
Origin of the Sinai-Negev erg, Egypt and Israel: mineralogical and geochemical evidence for the importance of the Nile and sea level history
The Sinai–Negev erg occupies an area of 13,000 km2 in the deserts of Egypt and Israel. Aeolian sand of this erg has been proposed to be derived from the Nile Delta, but empirical data supporting this view are lacking. An alternative source sediment is sand from the large Wadi El Arish drainage system in central and northern Sinai. Mineralogy of the Negev and Sinai dunes shows that they are high in
Authors
Daniel R. Muhs, Joel Roskin, Haim Tsoar, Gary Skipp, James R. Budahn, Amihai Sneh, Naomi Porat, Jean-Daniel Stanley, Itzhak Katra, Dan G. Blumberg
Oblique transfer of extensional strain between basins of the middle Rio Grande rift, New Mexico: Fault kinematic and paleostress constraints
The structural geometry of transfer and accommodation zones that relay strain between extensional domains in rifted crust has been addressed in many studies over the past 30 years. However, details of the kinematics of deformation and related stress changes within these zones have received relatively little attention. In this study we conduct the first-ever systematic, multi-basin fault-slip measu
Authors
Scott A. Minor, Mark R. Hudson, Jonathan S. Caine, Ren A. Thompson
Linking geology and health sciences to assess childhood lead poisoning from artisanal gold mining in Nigeria
Background: In 2010, Médecins Sans Frontières discovered a lead poisoning outbreak linked to artisanal gold processing in northwestern Nigeria. The outbreak has killed approximately 400 young children and affected thousands more.
Objectives: Our aim was to undertake an interdisciplinary geological- and health-science assessment to clarify lead sources and exposure pathways, identify additional to
Authors
Geoffrey S. Plumlee, James T. Durant, Suzette A. Morman, Antonio Neri, Ruth E. Wolf, Carrie A. Dooyema, Philip L. Hageman, Heather Lowers, Gregory L. Fernette, Gregory P. Meeker, William Benzel, Rhonda L. Driscoll, Cyrus J. Berry, James G. Crock, Harland L. Goldstein, Monique Adams, Casey L. Bartrem, Simba Tirima, Behbod Behrooz, Ian von Lindern, Mary Jean Brown
Late Pleistocene and Holocene uplift history of Cyprus: implications for active tectonics along the southern margin of the Anatolian microplate
The nature of the southern margin of the Anatolian microplate during the Neogene is complex, controversial and fundamental in understanding active plate-margin tectonics and natural hazards in the Eastern Mediterranean region. Our investigation provides new insights into the Late Pleistocene uplift history of Cyprus and the Troodos Ophiolite. We provide isotopic (14C) and radiogenic (luminescence)
Authors
R. W. Harrison, E. Tsiolakis, B. D. Stone, A. Lord, J. P. McGeehin, S. A. Mahan, P. Chirico
Human and biophysical influences on fire occurrence in the United States
National-scale analyses of fire occurrence are needed to prioritize fire policy and management activities across the United States. However, the drivers of national-scale patterns of fire occurrence are not well understood, and how the relative importance of human or biophysical factors varies across the country is unclear. Our research goal was to model the drivers of fire occurrence within ecore
Authors
Todd Hawbaker, Volker C. Radeloff, Susan I. Stewart, Roger B. Hammer, Nicholas S. Keuler, Murray K. Clayton
The geologic records of dust in the Quaternary
Study of geologic records of dust composition, sources and deposition rates is important for understanding the role of dust in the overall planetary radiation balance, fertilization of organisms in the world’s oceans, nutrient additions to the terrestrial biosphere and soils, and for paleoclimatic reconstructions. Both glacial and non-glacial processes produce fine-grained particles that can be tr
Authors
Daniel R. Muhs
Geochronologic evidence for a possible MIS-11 emergent barrier/beach-ridge in southeastern Georgia, USA
Predominantly clastic, off-lapping, transgressive, near-shore marine sediment packages that are morphologically expressed as subparallel NE-trending barriers, beach ridges, and associated back-barrier areas, characterize the near-surface stratigraphic section between the Savannah and the Ogeechee Rivers in Effingham County, southeastern Georgia. Each barrier/back-barrier (shoreline) complex is low
Authors
H. W. Markewich, M.J. Pavich, A. P. Schultz, S. A. Mahan, W. B. Aleman-Gonzalez, P.R. Bierman
Low footwall accelerations and variable surface rupture behavior on the Fort Sage Mountains fault, northeast California
The Fort Sage Mountains fault zone is a normal fault in the Walker Lane of the western Basin and Range that produced a small surface rupture (
Authors
Richard W. Briggs, Steven G. Wesnousky, James N. Brune, Matthew D. Purvance, Shannon Mahan
Iron mineralogy and bioaccessibility of dust generated from soils as determined by reflectance spectroscopy and magnetic and chemical properties--Nellis Dunes recreational area, Nevada
Atmospheric mineral dust exerts many important effects on the Earth system, such as atmospheric temperatures, marine productivity, and melting of snow and ice. Mineral dust also can have detrimental effects on human health through respiration of very small particles and the leaching of metals in various organs. These effects can be better understood through characterization of the physical and che
Authors
Harland L. Goldstein, Richard L. Reynolds, Suzette A. Morman, Bruce Moskowitz, Raymond F. Kokaly, Dirk Goossens, Brenda J. Buck, Cody Flagg, Jessica Till, Kimberly Yauk, Thelma S. Berquó