Publications
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Continental margin sedimentation: From sediment transport to sequence stratigraphy
This volume on continental margin sedimentation brings together an expert editorial and contributor team to create a state-of-the-art resource. Taking a global perspective, the book spans a range of timescales and content, ranging from how oceans transport particles, to how thick rock sequences are formed on continental margins.- Summarizes and integrates our understanding of sedimentary processes
The need for sustained and integrated high-resolution mapping of dynamic coastal environments
The coastal zone of the United States is a dynamic environment evolving in response to both natural processes and human activities. In order to protect coastal populations and resources, a detailed understanding of the physical setting and of the processes responsible for change is required. A sustained program of mapping coastal areas provides a means to establish baseline conditions, document ch
Authors
Hilary F. Stockdon, Jeff W. Lillycrop, Peter A. Howd, Jennifer M. Wozencraft
Microarchitectural change in density bands of the scleractinian montastraea faveolata, Looe Key Reef, Florida Keys, USA
No abstract available.
Authors
N.A. Buster, J.E. Sorauf
Southern California Bight 2003 Regional Monitoring Program: V. water quality
More than $30 million is expended annually on environmental monitoring in the Southern California Bight (SCB), yet only 5% of the Bight is monitored on an ongoing basis. Therefore, environmental managers in the SCB decided to expand their monitoring program and, starting in 1994, decided to conduct periodic regional assessments of ecosystem condition and assess the overall health of the SCB. Sixty
Authors
Nikolay P. Nezlin, Paul M. DiGiacomo, Stephen B. Weisberg, Dario W. Diehl, Jonathan A. Warrick, Michael J. Mengel, Burton H. Jones, Kristen M. Reifel, Scott C. Johnson, J. Carter Ohlmann, Libe Washburn, Eric J. Terrill
Integrating hydrologic and geophysical data to constrain coastal surficial aquifer processes at multiple spatial and temporal scales
Since 1997, repeated, coincident geophysical surveys and extensive hydrologic studies in shallow monitoring wells have been used to study static and dynamic processes associated with surface water-groundwater interaction at a range of spatial scales at the estuarine and ocean boundaries of an undeveloped, permeable barrier island in the Georgia part of the U.S. South Atlantic Bight. Because geophy
Authors
Gregory M. Schultz, Carolyn Ruppel, Patrick Fulton
Topography and geomorphology of the Huygens landing site on Titan
The Descent Imager/Spectral Radiometer (DISR) aboard the Huygens Probe took several hundred visible-light images with its three cameras on approach to the surface of Titan. Several sets of stereo image pairs were collected during the descent. The digital terrain models constructed from those images show rugged topography, in places approaching the angle of repose, adjacent to flatter darker plains
Authors
Laurence A. Soderblom, Martin G. Tomasko, Brent A. Archinal, Tammy L. Becker, Michael W. Bushroe, Debbie Cook, Lyn R. Doose, Donna M. Galuszka, Trent M. Hare, Elpitha Howington-Kraus, Erich Karkoschka, Randolph L. Kirk, Jonathan I. Lunine, Elisabeth A. McFarlane, Bonnie L. Redding, Bashar Rizk, Mark R. Rosiek, Charles See, Peter H. Smith
Three-dimensional geophysical mapping of rock alteration and water content at Mount Adams, Washington: Implications for lahar hazards
[1] Hydrothermally altered rocks, particularly if water saturated, can weaken stratovolcanoes, thereby increasing the potential for catastrophic sector collapses that can lead to far-traveled, destructive debris flows. Evaluating the hazards associated with such alteration is difficult because alteration has been mapped on few active volcanoes and the distribution and intensity of subsurface alter
Authors
C. A. Finn, M. Deszcz-Pan, E. D. Anderson, D. A. John
An efficient mode-splitting method for a curvilinear nearshore circulation model
A mode-splitting method is applied to the quasi-3D nearshore circulation equations in generalized curvilinear coordinates. The gravity wave mode and the vorticity wave mode of the equations are derived using the two-step projection method. Using an implicit algorithm for the gravity mode and an explicit algorithm for the vorticity mode, we combine the two modes to derive a mixed difference–differe
Authors
Fengyan Shi, James T. Kirby, Daniel M. Hanes
A deep reef in deep trouble
The well-documented degradation of shallower reefs which are often closer to land and more vulnerable to pollution, sewage and other human-related stressors has led to the suggestion that deeper, more remote offshore reefs could possibly serve as sources of coral and fish larvae to replenish the shallower reefs. Yet, the distribution, status, and ecological roles of deep (>30 m) Caribbean reefs ar
Authors
Charles Menza, M. Kendall, C. Rogers, J. Miller
Hindcasting potential hurricane impacts on rapidly changing barrier islands
Hindcasts of the coastal impact of Hurricane Ivan on Santa Rosa Island, Florida, using a storm-impact scaling model that compares hurricane-induced water levels to local dune morphology, were found to have an accuracy of 68% in predicting the occurrence of one of four impact regimes: swash, collision, overwash, and inundation. Errors were overwhelming under-predictions of the regime where the obse
Authors
H.F. Stockdon, D.M. Thompson, A. H. Sallenger
USGS advances in integrated, high-resolution sea-floor mapping: inner continental shelf to estuaries
The U.S. Geological Survey (USGS) has been involved in geological mapping of the sea floor for the past thirty years. Early geophysical and acoustic mapping efforts using GLORIA (Geologic LOng Range Inclined ASDIC) a long-range sidescan-sonar system, provided broad-scale imagery of deep waters within the U.S. Exclusive Economic Zone (EEZ). In the early 1990's, research emphasis shifted from deep-
Authors
J. F. Denny, W. C. Schwab, D. C. Twichell, T. F. O'Brien, W. W. Danforth, D. S. Foster, E. Bergeron, C.W. Worley, B. J. Irwin, B. Butman, P. C. Valentine, W. E. Baldwin, R.A. Morton, E. R. Thieler, D. R. Nichols, B.D. Andrews
Persistent chlordane concentrations in long island sound sediment: Implications from chlordane, 210Pb, and 137Cs profiles
Concentrations of chlordane, a banned termiticide and pesticide, were examined in recently collected surficial sediment (10 sites) and sediment cores (4 sites) in Long Island Sound (LIS).The highest chlordane concentrations were observed in western LIS, near highly urbanized areas. Chlordane concentrations did not decrease significantly in the past decade when compared to the data collected in 199
Authors
L. Yang, X. Li, John Crusius, U. Jans, M.E. Melcer, P. Zhang