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Scientific literature and information products produced by Woods Hole Coastal and Marine Science Center staff

Filter Total Items: 1737

A note on the effect of bottom currents on an ocean bottom seismometer A note on the effect of bottom currents on an ocean bottom seismometer

Two three-component ocean bottom seismometers and a current meter were deployed a few hundred meters apart on the southern Blake Plateau off the United States eastern coast to study the effect of near-bottom currents on the background noise level of seismometers. Although analysis of the data is limited somewhat by instrumental problems, the increase in current speed, which ranged from 2...
Authors
Anne M. Trehu

An underwater instrument for determining bearing capacity of shallow marine sediments An underwater instrument for determining bearing capacity of shallow marine sediments

A small, portable, underwater instrument for measuring carbonate substrate bearing capacity in situ is described. The device was used in various shallow water ( 9 m) carbonate reef environments. Criteria for design and operation were based on ability to deliver controlled levels of stress to bearing plates of various sizes, operability underwater by scuba divers, transportability, and...
Authors
Ronald C. Circe

Segmentation of mid-ocean ridges Segmentation of mid-ocean ridges

Studies of mid-ocean ridges in the Pacific and Atlantic oceans show that the volcanism that forms the oceanic crust along the spreading-plate boundaries is concentrated at regular intervals related to spreading rate. This observation and a new calculation for a Rayleigh-Taylor type of gravitational instability of a partially molten mantle region growing under spreading centres yield...
Authors
Hans Schouten, Kim D. Klitgord, J.A. Whitehead

Interstitial water methods Interstitial water methods

No abstract available.
Authors
Frank T. Manheim, J. M. Gieskes

Sedimentary processes on the Atlantic Continental Slope of the United States Sedimentary processes on the Atlantic Continental Slope of the United States

Until recently, the sedimentary processes on the United States Atlantic Continental Slope were inferred mainly from descriptive studies based on the bathymetry and on widely spaced grab samples, bottom photographs, and seismic-reflection profiles. Over the past 6 years, however, much additional information has been collected on the bottom morphology, characteristics of shallow-subbottom...
Authors
Harley J. Knebel

Florida: A Jurassic transform plate boundary Florida: A Jurassic transform plate boundary

Magnetic, gravity, seismic, and deep drill hole data integrated with plate tectonic reconstructions substantiate the existence of a transform plate boundary across southern Florida during the Jurassic. On the basis of this integrated suite of data the pre-Cretaceous Florida-Bahamas region can be divided into the pre-Jurassic North American plate, Jurassic marginal rift basins, and a...
Authors
Kim D. Klitgord, Peter Popenoe, Hans Schouten

Submarine sand dunes and sedimentary environments in Oceanographer Canyon. Submarine sand dunes and sedimentary environments in Oceanographer Canyon.

Observations from research submersibles in the northern part of Oceanographer Canyon reveal the presence of an extensive field of large sand dunes on the canyon floor. The dunes are medium to coarse sand, are oriented across the axis, and the largest of them are as high as 3 m and have wavelengths up to 15 m. Their asymmetry, grain size, and height suggest that they are formed by axial...
Authors
P. C. Valentine, R.A. Cooper, J. R. Uzmann

The Nisqually Glacier, Mount Rainier, Washington, 1857-1979: A summary of the long-term observations and a comprehensive bibliography The Nisqually Glacier, Mount Rainier, Washington, 1857-1979: A summary of the long-term observations and a comprehensive bibliography

Nisqually Glacier on Mount Ranier, Washington has a long record of terminus position observations and ice-surface altitude measurements along specific profiles, and has been the topic of numerous scientific studies. From the earliest observations in 1857 to the present many individuals and several different organizations have been involved in data collection at Nisqually Glacier. In...
Authors
C. C. Heliker, Aaron H. Johnson, S. M. Hodge

Seismic reflection studies of sinkholes and limestone dissolution features on the northeastern Florida shelf Seismic reflection studies of sinkholes and limestone dissolution features on the northeastern Florida shelf

High-resolution seismic-reflection profiles show that the shelf off northern Florida is underlain by solution deformed limestone of Oligocene, Eocene, Paleocene and late Cretaceous age. Dissolution and collapse features are widely scattered. They are expressed in three general forms: as sinkholes that presently breach the sea floor, such as Red Snapper Sink and the Crescent Beach...
Authors
Peter Popenoe, F. A. Kohout, F.T. Manheim
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