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Sound Waves Newsletter
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Filter Total Items: 1780
210Pb balance and implications for particle transport on the continental shelf, U.S. Middle Atlantic Bight 210Pb balance and implications for particle transport on the continental shelf, U.S. Middle Atlantic Bight
Supply of 210Pb to the continental shelf off the northeastern United States is dominated by the deposition from the atmosphere, the rate of which is reliably known from previously published work. Excess 210Pb inventories in the shelf sediments show accumulations that are nearly in balance with the supply, even in areas of relict sands where it is believed that no net accumulation of...
Authors
M.P. Bacon, Rebecca A. Belastock, Michael H. Bothner
Regional stratigraphic framework of surficial sediments and bedrock beneath Lake Ontario Regional stratigraphic framework of surficial sediments and bedrock beneath Lake Ontario
Approximately 2550 km of single-channel high-resolution seismic reflection profiles have been interpreted and calibrated with lithological and geochronological information from four representative piston cores and one grab sample to provide a regional stratigraphie framework for the subbottom deposits of Lake Ontario. Five units overlying Paleozoic bedrock were identified and mapped...
Authors
D. R. Hutchinson, C.F. Lewis, G. Hund
Seismic experiment ross ice shelf 1990/91: Characteristics of the seismic reflection data Seismic experiment ross ice shelf 1990/91: Characteristics of the seismic reflection data
The Transantarctic Mountains, with a length of 3000-3500 km and elevations of up to 4500 m, are one of the major Cenozoic mountain ranges in the world and are by far the most striking example of rift-shoulder mountains. Over the 1990-1991 austral summer Seismic Experiment Ross Ice Shelf (SERIS) was carried out across the Transantarctic Mountain front, between latitudes 82 degrees to 83...
Evidence for gas accumulation associated with diapirism and gas hydrates at the head of the Cape Fear Slide Evidence for gas accumulation associated with diapirism and gas hydrates at the head of the Cape Fear Slide
Single-channel seismic reflection profiles show evidence for areas of significant gas accumulation at the head of the Cape Fear Slide on the continental rise oft North Carolina. Gas accumulation appears to occur beneath a gas hydrate seal in landward-dipping strata and in domed strata associated with diapirism. In addition, gas venting may have occurred near diapirs located at the head...
Authors
E.A. Schmuck, C. K. Paull
Modelling passive margin sequence stratigraphy Modelling passive margin sequence stratigraphy
We have modelled stratigraphic sequences to aid in deciphering the sedimentary response to sea-level change. Sequence geometry is found to be most sensitive to sea level, but other factors, including subsidence rate and sediment supply, can produce similar changes. Sediment loading and compaction also play a major role in generating accommodation, a factor often neglected in sequence...
Authors
M.S. Steckler, D. Reynolds, B. Coakley, B.A. Swift, R. D. Jarrard
Deep Sea Drilling Project Site 612 bolide event: New evidence of a late Eocene impact-wave deposit and a possible impact site, U.S. east coast: Comment and reply Deep Sea Drilling Project Site 612 bolide event: New evidence of a late Eocene impact-wave deposit and a possible impact site, U.S. east coast: Comment and reply
No abstract available.
Authors
Wuchang Wei, C. Wylie Poag, Lawrence J. Poppe, David W. Folger, David S. Powars, Robert B. Mixon, Lucy E. Edwards, Scott Bruce
Geodetic airborne laser altimetry of Breidamerkurjökull and Skeidarárjökull, Iceland, and Jakobshavns Isbræ, West Greenland Geodetic airborne laser altimetry of Breidamerkurjökull and Skeidarárjökull, Iceland, and Jakobshavns Isbræ, West Greenland
Two geodetic airborne laser altimeter (ALA) systems coupled to Global Positioning System receivers acquired submeter-resolution topographic profiles of the lower parts of Breidamerkurjökull and Skeidarárjökull, Iceland, in May 1989 and September 1991 (Skeidarárjökull) and of Jakobshavns Isbræ, Greenland, in April 1992. Maximum measured crevasse depths on Breidamerkurjökull...
Authors
James B. Garvin, Richard S. Williams
The relation between sidescan-sonar imagery and sediment physical properties: A comparison of two deep sea fan systems The relation between sidescan-sonar imagery and sediment physical properties: A comparison of two deep sea fan systems
No abstract available.
Authors
H. J. Lee, W. C. Schwab, R. E. Kayen, B. D. Edwards, D.C. Twichell, M.E. Field, J.V. Gardner
Modeling transport processes in the coastal ocean Modeling transport processes in the coastal ocean
No abstract available.
Authors
A.F. Blumberg, R. P. Signell, H. L. Jenter
Mobility of radioisotopes in marine surface sediments Mobility of radioisotopes in marine surface sediments
Transport of a radioisotope in a sediment-water system can be retarded by sorption of the isotope to solid; which is controlled by the affinity of the radioisotope for the sediment particles. In order to study trace metal and ra- dionuclide mobility on the sea floor, the following measurements were carried out: (1)effective diffusion rates in sediments in the laboratory and on the sea...
Authors
Marilyn R. Buchholtz ten Brink, P. H. Santschi
Continental margins: Windows into Earth's history Continental margins: Windows into Earth's history
No abstract available.
Authors
Deborah R. Hutchinson