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Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.

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Large-scale marine ecosystem change and the conservation of marine mammals Large-scale marine ecosystem change and the conservation of marine mammals

Papers in this Special Feature stem from a symposium on large-scale ecosystem change and the conservation of marine mammals convened at the 86th Annual Meeting of the American Society of Mammalogists in June 2006. Major changes are occurring in multiple aspects of the marine environment at unprecedented rates, within the life spans of some individual marine mammals. Drivers of change...
Authors
T. J. O'Shea, D.K. Odell

Laser ablation ICP-MS in geochemistry and biogeochemistry: A progress report Laser ablation ICP-MS in geochemistry and biogeochemistry: A progress report

[No abstract available]
Authors
W.I. Ridley, A.E. Koenig, M.J. Pribil

Late Neogene marine incursions and the ancestral Gulf of California Late Neogene marine incursions and the ancestral Gulf of California

The late Neogene section in the Salton Trough, California, and along the lower Colorado River in Arizona is composed of marine units bracketed by nonmarine units. Microfossils from the marine deposits indicate that a marine incursion inundated the Salton Trough during the late Miocene. Water depths increased rapidly in the Miocene and eventually flooded the region now occupied by the...
Authors
K. McDougall

Late pleistocene aggradation and degradation of the lower colorado river: Perspectives from the Cottonwood area and other reconnaissance below Boulder Canyon Late pleistocene aggradation and degradation of the lower colorado river: Perspectives from the Cottonwood area and other reconnaissance below Boulder Canyon

Where the lower Colorado River traverses the Basin and Range Province below the Grand Canyon, significant late Pleistocene aggradation and subsequent degrada tion of the river are indicated by luminescence, paleomagnetic, and U-series data and stratigraphy. Aggradational, finely bedded reddish mud, clay, and silt are underlain and overlain by cross-bedded to plane-bedded fine sand and...
Authors
S.C. Lundstrom, S. A. Mahan, J.B. Paces, M.R. Hudson, P.K. House, D.V. Malmon, J.L. Blair, K. A. Howard
By
Geosciences and Environmental Change Science Center, Luminescence Dating Laboratory

Late Quaternary MIS 6-8 shoreline features of pluvial Owens Lake, Owens Valley, eastern California Late Quaternary MIS 6-8 shoreline features of pluvial Owens Lake, Owens Valley, eastern California

The chronologic history of pluvial Owens Lake along the eastern Sierra Nevada in Owens Valley, California, has previously been reported for the interval of time from ca. 25 calibrated ka to the present. However, the age, distribution, and paleoclimatic context of higher-elevation shoreline features have not been formally documented. We describe the location and characteristics of wave...
Authors
A. S. Jayko, S.N. Bacon

Levee evaluation using MASW: Preliminary findings from the Citrus Lakefront Levee, New Orleans, Louisiana Levee evaluation using MASW: Preliminary findings from the Citrus Lakefront Levee, New Orleans, Louisiana

The utility of the multi‐channel analysis of surface waves (MASW) seismic method for non‐invasive assessment of earthen levees was evaluated for a section of the Citrus Lakefront Levee, New Orleans, Louisiana. This test was conducted after the New Orleans' area levee system had been stressed by Hurricane Katrina in 2005. The MASW data were acquired in a seismically noisy, urban...
Authors
John W. Lane, Julian M. Ivanov, Frederick D. Day-Lewis, Drew Clemens, Robert Patev, Richard D. Miller
By
Water Resources Mission Area, Groundwater and Streamflow Information Program
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