Publications
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Early Pleistocene climate-induced erosion of the Alaska Range formed the Nenana Gravel
The Pliocene-Pleistocene transition resulted in extensive global cooling and glaciation, but isolating this climate signal within erosion and exhumation responses in tectonically active regimes can be difficult. The Nenana Gravel is a foreland basin deposit in the northern foothills of the Alaska Range (USA) that has long been linked to unroofing of the Alaska Range starting ca. 6 Ma. Using 26Al/1
Authors
Rachel Sortor, Brent Goehring, Sean Bemis, Chester A. Ruleman, Marc Caffee, Dylan Ward
Editorial special issue natural capital accounting: The content, the context, and the framework
No abstract available.
Authors
Alessandra La Notte, Sara Vallecillo, Joachim Maes, Carl D. Shapiro, Kenneth J. Bagstad, Jane Carter Ingram, Pierre D. Glynn
Mapping wetland burned area from Sentinel-2 across the southeastern United States and its contributions relative to Landsat 8 (2016-2019)
Prescribed fires and wildfires are common in wetland ecosystems across the Southeastern United States. However, the wetland burned area has been chronically underestimated across the region due to (1) spectral confusion between open water and burned area, (2) rapid post-fire vegetation regrowth, and (3) high annual precipitation limiting clear-sky satellite observations. We developed a machine lea
Authors
Melanie K. Vanderhoof, Todd Hawbaker, Casey Teske, Andrea Ku, Joe Noble, Joshua J. Picotte
A multi-decadal geochemical record from Rano Aroi (Easter Island/Rapa Nui): Implications for the environment, climate and humans during the last two millennia
The small and remote Easter Island (Rapa Nui) has a complex and still partially unknown history of human colonization and interactions with the environment. Previous research from sedimentary archives collected in the three freshwater bodies of Rapa Nui document dramatic environmental changes over the last two millennia. Yet, the characteristics of sediments and paleoenvironmental records are chal
Authors
Marco Roman, David B. McWethy, Natalie Kehrwald, Evans Osayuki Erhenhi, Amy E. Myrbo, José M. Ramirez Aliaga, Anibal Pauchard, Clara Turetta, Carlo Barbante, Matthew Prebble, Elena Argiriadis, Dario Battistel
The trajectory of soil development and its relationship to soil carbon dynamics
It has been postulated that the amount of soil organic carbon (SOC) associated with soil minerals exhibits a threshold relationship in response to effective soil moisture (estimated as precipitation less evapotranspiration). To better characterize the role of moisture in influencing mechanisms of SOC storage during pedogenesis, we compare soils from two different chronosequence sites: the Santa Cr
Authors
Corey Lawrence, Marjorie S. Schulz, Caroline Masiello, Oliver A. Chadwick, Jennifer W. Harden
Geomorphic history of Lake Manix, Mojave Desert, California: Evolution of a complex terminal lake basin
The US Environmental Protection Agency's short-term freshwater effluent test methods include a fish (Pimephales promelas), a cladoceran (Ceriodaphnia dubia), and a green alga (Raphidocelis subcapitata). There is a recognized need for additional taxa to accompany the three standard species for effluent testing. An appropriate additional taxon is unionid mussels because mussels are widely distribute
Authors
Marith C. Reheis, David M. Miller, James B. Paces, Charles G. Oviatt, Joanna R. Redwine, Darrell Kaufman, Jordon Bright, Elmira Wan
Middle and late Pleistocene pluvial history of Newark Valley, central Nevada, USA
Newark Valley lies between the two largest pluvial lake systems in the Great Basin, Lake Lahontan and Lake Bonneville. Soils and geomorphology, stratigraphic interpretations, radiocarbon ages, and amino acid racemization geochronology analyses were employed to interpret the relative and numerical ages of lacustrine deposits in the valley. The marine oxygen isotope stage (MIS) 2 beach barriers are
Authors
Joanna L. Redwine, R. M. Burke, Marith C. Reheis, R. J. Bowers, Jordon Bright, D. S. Kaufman, R. M. Forester
Holocene hydroclimatic reorganizations in northwest Canada inferred from lacustrine carbonate oxygen isotopes
Sub-centennial oxygen (δ18O) isotopes of ostracod and authigenic calcite from Squanga Lake provides evidence of hydroclimatic extremes and a series of post-glacial climate system reorganizations for the interior region of northwest Canada. Authigenic calcite δ18O values range from −16‰ to −21‰ and are presently similar to modern lake water and annual precipitation values. Ostracod δ18O record near
Authors
G. Everett Lasher, Mark B. Abbott, Lesleigh Anderson, Lindsey Yasarer, Michael Rosenheimer, Bruce P. Finney
Pore pressure threshold and fault slip potential for induced earthquakes in the Dallas-Fort Worth area of north central Texas
Earthquakes were induced in the Fort Worth Basin from 2008 through 2020 by increase in pore pressure from injection of oilfield wastewater (SWD). In this region and elsewhere, a missing link in understanding the mechanics of causation has been a lack of comprehensive models of pore pressure evolution (ΔPp) from SWD. We integrate detailed earthquake catalogs, ΔPp, and probabilistic fault slip poten
Authors
Peter H. Hennings, J.P. Nicot, Rebecca S. Gao, Heather R. DeShon, Jens-Erik Lundstern, Alan P. Morris, Michael R. Brudzinski, Elizabeth A. Horne, Caroline Breton
Using the DRCOG 2018 pilot land use land cover data to predict urban air temperature in the Denver metro area
No abstract available.
Authors
Peter Christian Ibsen
A reactive transport approach to modeling cave seepage water chemistry I: Carbon isotope transformations
The majority of Critical Zone research has emphasized silicate lithologies, which are typified by relatively slow rates of reactivity and incongruent weathering. However, the relatively simpler weathering of carbonate-dominated lithology can result in secondary mineral deposits, such as speleothems, which provide a long-term archive for Critical Zone processes. In particular, carbon isotopic varia
Authors
Jennifer Druhan, Corey Lawrence, Aaron Covey, Max Giannetta, Jessica Oster
A reactive transport approach to modeling cave seepage water chemistry II: Elemental signatures
Karst systems are useful for examining spatial and temporal variability in Critical Zone processes because they provide a window into the subsurface where waters have interacted with vegetation, soils, regolith, and bedrock across a range of length and timescales. These hydrologic pathways frequently include the precipitation of speleothems, which provide long-term archives of climate and environm
Authors
Jessica Oster, Aaron Covey, Corey Lawrence, Max Giannetta, Jennifer Druhan