Publications
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Sound Waves Newsletter
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Filter Total Items: 1757
Offset-vertical seismic profiling for marine gas hydrate exploration: Is it a suitable technique? First results from ODP Leg 164 Offset-vertical seismic profiling for marine gas hydrate exploration: Is it a suitable technique? First results from ODP Leg 164
Walkaway vertical seismic profiles were acquired during Ocean Drilling Project (ODP) Leg 164 at the Blake Ridge to investigate seismic properties of hydrate-bearing sediments and the zone of free gas beneath them. An evaluation of compressional (P-) wave arrivals Site 994 indicates P-wave anisotrophy in the sediment column. We identified several shear (S-) wave arrivals in the horizontal
Authors
I.A. Pecher, W.S. Holbrook, R.A. Stephen, H. Hoskins, D. Lizarralde, D. R. Hutchinson, W.T. Wood
Sediments from lakes Pontchartrain and Maurepas: Database development and preliminary synthesis of historical chemical and other environmental data Sediments from lakes Pontchartrain and Maurepas: Database development and preliminary synthesis of historical chemical and other environmental data
No abstract available.
Authors
F.T. Manheim, A. McIntire, George C. Flowers, M. Marot, C. W. Holmes
Morphology and stratal geometry of the Antarctic continental shelf: Insights from models Morphology and stratal geometry of the Antarctic continental shelf: Insights from models
Reconstruction of past ice-sheet fluctuations from the stratigraphy of glaciated continental shelves requires understanding of the relationships among the stratal geometry, glacial and marine sedimentary processes, and ice dynamics. We investigate the formation of the morphology and the broad stratal geometry of topsets on the Antarctic continental shelf with numerical models. Our models...
Authors
Alan K. Cooper, Peter F. Barker, Giuliano Brancolini
The reconstruction of short intense cooling events in northern Asia during interglacial period (isotopic stages 5, 7, 9) from the long continental records from Lake Baikal sediments The reconstruction of short intense cooling events in northern Asia during interglacial period (isotopic stages 5, 7, 9) from the long continental records from Lake Baikal sediments
No abstract available.
Authors
E.B. Karabanov, D. Williams, A.A. Prokopenko, S. Fowell, Pierre Francus, S. Colman, Mikhail I. Kuzmin, E. Bezrukova, V. Misharina
Geophysical evidence for late Cenozoic subglacial volcanism beneath the West Antarctic ice sheet and additional speculation as to its origin Geophysical evidence for late Cenozoic subglacial volcanism beneath the West Antarctic ice sheet and additional speculation as to its origin
No abstract available.
Authors
John C. Behrendt, D. D. Blankenship, D. Damaske, A. K. Cooper, C. Finn, R.E. Bell, C. Ricci
Modeling waves and circulation in Lake Pontchartrain, Louisiana Modeling waves and circulation in Lake Pontchartrain, Louisiana
The U.S. Geological Survey is conducting a study of storm-driven sediment resuspension and transport in Lake Pontchartrain, Louisiana. Two critical processes related to sediment transport in the lake are (1) the resuspension of sediments due to wind-generated storm waves and (2) the movement of resuspended material by lake currents during storm wind events. The potential for sediment...
Authors
Richard P. Signell, Jeffrey H. List
Lateral trapping of sediment in partially mixed estuary Lateral trapping of sediment in partially mixed estuary
No abstract available.
Authors
W. R. Geyer, R. P. Signell, G. C. Kineke
Reply to comment by R. Anderson on "Uranium-series disequilibrium, sedimentation, diatom frustules, and paleoclimate change in Lake Baikal" Reply to comment by R. Anderson on "Uranium-series disequilibrium, sedimentation, diatom frustules, and paleoclimate change in Lake Baikal"
No abstract available.
Authors
D. N. Edgington, J. A. Robbins, S.M. Colman, K. A. Orlandini, M. P. Gustin, J. V. Klump, L. Z. Granina
Roadblocks on the kill curve: Testing the Raup hypothesis Roadblocks on the kill curve: Testing the Raup hypothesis
The documented presence of two large (~100-km diameter), possibly coeval impact craters of late Eocene age, requires modification of the impact-kill curve proposed by David M. Raup. Though the estimated meteorite size for each crater alone is large enough to have produced considerable global environmental stress, no horizons of mass mortality or pulsed extinction are known to be...
Authors
C. W. Poag
A preliminary investigation of siliceous microfossil succession in late quaternary sediments from Lake Baikal, Siberia A preliminary investigation of siliceous microfossil succession in late quaternary sediments from Lake Baikal, Siberia
Siliceous microfossil assemblage succession was analyzed in a 100 m sediment core from Lake Baikal, Siberia. The core was recovered from the lake's central basin at a water depth of 365 m. Microfossil abundance varied greatly within the intervals sampled, ranging from samples devoid of siliceous microfossils to samples with up to 3.49 x 1011 microfossils g-1 sediment. Fluctuations in...
Authors
M. L. Julius, E. F. Stoermer, S.M. Colman, T. C. Moore
Bathymetric comparisons adjacent to the Louisiana barrier islands: Processes of large-scale change Bathymetric comparisons adjacent to the Louisiana barrier islands: Processes of large-scale change
This paper summarizes the results of a comparative bathymetric study encompassing 150 km of the Louisiana barrier-island coast. Bathymetric data surrounding the islands and extending to 12 m water depth were processed from three survey periods: the 1880s, the 1930s, and the 1980s. Digital comparisons between surveys show large-scale, coherent patterns of sea-floor erosion and accretion...
Authors
J. H. List, B. E. Jaffe, A. H. Sallenger, M. E. Hansen
Sediment transport pathway in the back of a nearly semienclosed subembayment of San Francisco Bay, California Sediment transport pathway in the back of a nearly semienclosed subembayment of San Francisco Bay, California
Time series measurements of current velocity, depth and suspended-solids concentration (SSC) were used to obtain suspended-solids fluxes (SSF) during the fall at central Honker Bay and Spoonbill Creek. A wind-induced shear stress increases SSF out of Honker Bay through Spoonbill Creek by combining two effects: (1) wind-wave resuspension of bed sediments, and (2) wind shear raises the...
Authors
John C. Warner, David H. Schoellhamer, Jon R. Burau