Publications
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Submarine landslides Submarine landslides
Landslides are common on inclined areas of the seafloor, particularly in environments where weak geologic materials such as rapidly deposited, finegrained sediment or fractured rock are subjected to strong environmental stresses such as earthquakes, large storm waves, and high internal pore pressures. Submarine landslides can involve huge amounts of material and can move great distances...
Authors
M. A. Hampton, H.J. Lee, J. Locat
Intermediate‐depth intraslab earthquakes and arc volcanism as physical expressions of crustal and uppermost mantle metamorphism in subducting slabs Intermediate‐depth intraslab earthquakes and arc volcanism as physical expressions of crustal and uppermost mantle metamorphism in subducting slabs
We elaborate on the well-known spatial association between axc volcanoes and Wadati Benioff zones and explore in detail their genetic relationships as dual physical expressions of slab metamorphism of the oceanic crust and uppermost mantle. At hypocentral depths less than 200 km intra slab Wadati-Benioff earthquakes tend to occur near the top surfaces of slabs. Subduction of very young...
Authors
Stephen H. Kirby, E. Robert Engdahl, Roger P. Denlinger
Decomposition of AVIRIS spectra: Extraction of spectral reflectance, atmospheric, and instrumental components Decomposition of AVIRIS spectra: Extraction of spectral reflectance, atmospheric, and instrumental components
Presents techniques that use only information contained within a raw, high-spectral-resolution, hyperspectral Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) scene to estimate and remove additive components (atmospheric scattering and instrument dark current). These techniques allow normalization of multiplicative components (instrument gain, topography, atmospheric transmission)...
Authors
Lisa R. Gaddis, Laurence A. Soderblom, Hugh H. Kieffer, Kris J. Becker, James M. Torson, Kevin F. Mullins
Gull of Mexico and Caribbean EEZ: Part III Gull of Mexico and Caribbean EEZ: Part III
No abstract available.
Authors
David C. Twichell, Kathryn M. Scanlon, William P. Dillon
Morphology of carbonate escarpments as an indicator of erosional processes Morphology of carbonate escarpments as an indicator of erosional processes
No abstract available.
Authors
David C. Twichell, William P. Dillon, Charles K. Paull, Neil H. Kenyon
The stable oxygen and carbon isotopic record from a coral growing in Florida Bay: a 160 year record of climatic and anthropogenic influence The stable oxygen and carbon isotopic record from a coral growing in Florida Bay: a 160 year record of climatic and anthropogenic influence
A 160 year record of skeletal δ13C and δ18O was examined in a specimen of the coral Solenastrea bournonigrowing in Florida Bay. Variations in the δ18O of the skeleton can be correlated to changes in salinity while changes in the δ13C reflect cycling of organic material within the Bay. Based on the correlation between salinity and skeletal δ18O, we have concluded that there has been no...
Authors
Peter K. Swart, Genevieve F. Healy, Richard E. Dodge, Philip Kramer, J. Harold Hudson, Robert B. Halley, Michael B. Robblee
Characteristics of the continental slope and rise off North Carolina from GLORIA and seismic-reflection data: The interaction of downslope and contour current processes Characteristics of the continental slope and rise off North Carolina from GLORIA and seismic-reflection data: The interaction of downslope and contour current processes
No abstract available.
Authors
Peter Popenoe, William P. Dillon
Sedimentary processes in the salt deformation province of the Texas-Louisiana continental slope Sedimentary processes in the salt deformation province of the Texas-Louisiana continental slope
No abstract available.
Authors
David C. Twichell, Catherine M. Delorey
Tectonics and seismicity of the southern Washington Cascade range Tectonics and seismicity of the southern Washington Cascade range
Geophysical, geological, and seismicity data are combined to develop a transpressional strain model for the southern Washington Cascades region. We use this model to explain oblique fold and fault systems, transverse faults, and a linear seismic zone just west of Mt. Rainier known as the western Rainier zone. We also attempt to explain a concentration of earthquakes that connects the...
Authors
W. D. Stanley, S. Y. Johnson, A.I. Qamar, C.S. Weaver, J. M. Williams
Landslides triggered by the 1994 Northridge, California, earthquake Landslides triggered by the 1994 Northridge, California, earthquake
The 17 January 1994 Northridge, California, earthquake (Mw = 6.7) triggered more than 11,000 landslides over an area of about 10,000 km2. Most of the landslides were concentrated in a 1000-km2 area that included the Santa Susana Mountains and the mountains north of the Santa Clara River valley. We mapped landslides triggered by the earthquake in the field and from 1:60,000-nominal-scale...
Authors
E. L. Harp, R.W. Jibson
Hot dry rock and the U.S. geological survey: a question of priorities Hot dry rock and the U.S. geological survey: a question of priorities
The enactment of the Energy Policy Act of 1992 saw the assignment of definite responsibilities relating to hot dry rock (HDR) to the US Geological Survey (USGS). This mandate provided some explicit guidelines and individual tasks in areas in which the USGS already had close ties to the Department of Energy and a number of its national laboratories. This paper discusses various tasks in...
Authors
John H. Sass