Zobrazeno 1 - 10
of 180
pro vyhledávání: '"Tammy M. Rittenour"'
Publikováno v:
Quaternary, Vol 5, Iss 4, p 43 (2022)
In what are now the warm deserts of the American Southwest, direct effects of changing climate on plant distributions are typically viewed as the principal driver of vegetation changes that followed the late Pleistocene–Holocene transition (LPH). H
Externí odkaz:
https://doaj.org/article/2dbabbf32d5c474eacfa5e8dda176d75
Autor:
George V. Last, Tammy M. Rittenour
Publikováno v:
Quaternary, Vol 4, Iss 3, p 20 (2021)
Late Pleistocene outburst megafloods, mostly from glacial Lake Missoula, hydraulically ponded behind downstream constrictions in the Columbia River in southeastern Washington State, USA. Optically stimulated luminescence (OSL) ages for flood deposits
Externí odkaz:
https://doaj.org/article/cfb06a80777c4958b3f86eecb2b1fb97
Autor:
Christopher I. Roos, Tammy M. Rittenour, Thomas W. Swetnam, Rachel A. Loehman, Kacy L. Hollenback, Matthew J. Liebmann, Dana Drake Rosenstein
Publikováno v:
Fire, Vol 3, Iss 3, p 32 (2020)
Here, we show that the last century of fire suppression in the western U.S. has resulted in fire intensities that are unique over more than 900 years of record in ponderosa pine forests (Pinus ponderosa). Specifically, we use the heat-sensitive lumin
Externí odkaz:
https://doaj.org/article/7a0e2199618d43329130d1c7d4d22a94
Autor:
Nicholas R. Patton, James Shulmeister, Quan Hua, Peter Almond, Tammy M. Rittenour, Johanna M. Hanson, Aloysius Grealy, Jack Gilroy, Daniel Ellerton
Publikováno v:
Quaternary Research. :1-23
In this study, we assess charcoal records from eolian deposits within the Cooloola Sand Mass, a subtropical coastal dune system in eastern Australia, to determine whether they can be used as a proxy for Holocene fire history. We excavate four profile
Autor:
Paula J. Perilla-Castillo, Steven G. Driese, Sally P. Horn, Tammy M. Rittenour, Michelle S. Nelson, Larry D. McKay
Publikováno v:
Physical Geography. :1-53
Autor:
Nicholas R. Patton, James Shulmeister, Tammy M. Rittenour, Peter Almond, Daniel Ellerton, Talitha Santini
Publikováno v:
Earth Surface Processes and Landforms. 47:2455-2470
Autor:
Simon Brewer, Andrea Brunelle, Mitchell J. Power, Bérangère Leys, Tammy M. Rittenour, Joshua P. Heyer, Zachary J. Lundeen
Publikováno v:
Quaternary International
Quaternary International, Elsevier, 2020, ⟨10.1016/j.quaint.2020.09.013⟩
Quaternary International, Elsevier, 2020, ⟨10.1016/j.quaint.2020.09.013⟩
International audience; Lake Bottom oxbow is a partially-filled oxbow lake within an alluvium filled sandstone canyon reach of the Dolores River in eastern Utah, USA. Two adjacent sediment cores were obtained from the Lake Bottom oxbow to better unde
Publikováno v:
Geology. 50:16-20
In most landscape evolution models, extreme rainfall enhances river incision. In steep landscapes, however, these events trigger landslides that can buffer incision via increased sediment delivery and aggradation. We quantify landslide sediment aggra
Autor:
T.E. Stahlecker, Lyman P. Persico, Tammy M. Rittenour, S.A.T. Brody, S.B. Dunn, Joseph R. McAuliffe, L. D. McFadden
Publikováno v:
Geology. 50:54-59
Climate change is an often-cited control on geomorphic processes in the arid southwestern United States, but links to direct climatic factors and vegetation change remain under debate. Hillslopes at a site in the eastern Mojave Desert in southern Nev
Publikováno v:
Geological Society of America Bulletin
Understanding the dynamics of the greater Yellowstone region requires constraints on deformation spanning million year to decadal timescales, but intermediate-scale (Quaternary) records of erosion and deformation are lacking. The Upper Snake River dr