Publications
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Cincinnati landslide database Cincinnati landslide database
No abstract available.
Authors
R.L. Berknopf, R. H. Campbell, D.S. Brookshire, C.D. Shapiro
Origin, structure, and evolution of a reattachment bar, Colorado River, Grand Canyon, Arizona Origin, structure, and evolution of a reattachment bar, Colorado River, Grand Canyon, Arizona
In a channel expansion, flow can separate from the bank, creating a zone of relatively weak recirculating current. Bars that accumulate in this weak flow near the point where flow reattaches to the bank are called reattachment bars. As a reattachment bar evolves, the recirculation zone may fill with sediment and restrict flow from the main channel. The increasingly restricted flow over...
Authors
David M. Rubin, John C. Schmidt, Johnnie N. Moore
Flume experiments on the alignment of transverse, oblique, and longitudinal dunes in directionally varying flows Flume experiments on the alignment of transverse, oblique, and longitudinal dunes in directionally varying flows
For more than a century geologists have wondered why some bedforms are orientated roughly transverse to flow, whereas others are parallel or oblique to flow. This problem of bedform alignment was studied experimentally using subaqueous dunes on a 3–6-m-diameter sand-covered turntable on the floor of a 4-m-wide flume. In each experiment, two flow directions (relative to the bed) were...
Authors
David M. Rubin, Hiroshi Ikeda
Deep crustal structure of the Cascade Range and surrounding regions from seismic refraction and magnetotelluric data Deep crustal structure of the Cascade Range and surrounding regions from seismic refraction and magnetotelluric data
Several regional seismic refraction and magnetotelluric (MT) profiles have been completed across the Cascade Range and surrounding geologic provinces in California, Oregon, and Washington. Analysis of three MT and two seismic refraction profiles in Oregon and a coincident MT and refraction profile in northern California show a high degree of correlation between resistivity and velocity...
Authors
William D. Stanley, Walter D. Mooney, Gary S. Fuis
Rheological analysis of fine-grained natural debris-flow material Rheological analysis of fine-grained natural debris-flow material
Experiments were conducted on large samples of fine-grained material (???2mm) from a natural debris flow using a wide-gap concentric-cylinder viscometer. The rheological behavior of this material is compatible with a Bingham model at shear rates in excess of 5 sec. At lesser shear rates, rheological behavior of the material deviates from the Bingham model, and when sand concentration of...
Authors
Jon J. Major, Thomas C. Pierson
Summit Lake landslide and geomorphic history of Summit Lake basin, northwestern Nevada Summit Lake landslide and geomorphic history of Summit Lake basin, northwestern Nevada
The Summit Lake landslide, northwestern Nevada, composed of Early Miocene pyroclastic debris, Ashdown Tuff, and basalt and rhyolite of the Black Rock Range, blocked the upper Soldier Creek-Snow Creek drainage and impounded Summit Lake sometimes prior to 7840 yr B.P. The slide covers 8.2 km2 and has geomorphic features characteristic of long run-out landslides, such as lobate form...
Authors
B. Brandon Curry, W.N. Melhorn
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: September 1990 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: September 1990
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Preliminary maps showing landslide deposits and related features in New Mexico Preliminary maps showing landslide deposits and related features in New Mexico
No abstract available.
Authors
Mauro Cardinali, Fausto Guzzetti, Earl E. Brabb
By
Geology, Energy, and Minerals Mission Area, Natural Hazards Mission Area, Energy Resources Program, Landslide Hazards Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Geologic Hazards Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Preliminary map showing locations of landslides in El Yunque quadrangle, Puerto Rico Preliminary map showing locations of landslides in El Yunque quadrangle, Puerto Rico
No abstract available.
Authors
Manuel R. Guariguata, Matthew C. Larsen
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: May 1990 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: May 1990
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Summary of geotechnical and hydrologic data collected through April 30, 1990, for the Alani-Paty Landslide, Manoa Valley, Honolulu, Hawaii Summary of geotechnical and hydrologic data collected through April 30, 1990, for the Alani-Paty Landslide, Manoa Valley, Honolulu, Hawaii
No abstract available.
Authors
R.L. Baum, S.R. Spengler, J.D. Torikai, L.A. Liu
Effect of wave-current interaction on wind-driven circulation in narrow, shallow embayments Effect of wave-current interaction on wind-driven circulation in narrow, shallow embayments
The effect of wind waves on the steady wind-driven circulation in a narrow, shallow bay is investigated with a two-dimensional (y, z) circulation model and the Grant and Madsen [1979] bottom-boundary layer model, which includes wave-current interaction. A constant wind stress is applied in the along-channel x direction to a channel with a constant cross-sectional profile h(y). The wind...
Authors
Richard P. Signell, Robert C. Beardsley, H. C. Graber, A. Capotondi