Publications
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Geologic map and digital database of the Redlands 7.5' quadrangle, San Bernardino and Riverside Counties, California Geologic map and digital database of the Redlands 7.5' quadrangle, San Bernardino and Riverside Counties, California
This geologic database of the Redlands 7.5' quadrangle was prepared by the Southern California Areal Mapping Project (SCAMP), a regional geologic-mapping project sponsored jointly by the U.S. Geological Survey and the California Geological Survey. The database was developed as a contribution to the National Cooperative Geologic Mapping Program's National Geologic Map Database, and is...
Authors
Jonathan C. Matti, Douglas M. Morton, Brett F. Cox, Katherine J. Kendrick, Pamela M. Cossette, Bradley Jones, Stephen A. Kennedy
By
Natural Hazards Mission Area, Geology, Energy, and Minerals Mission Area, Earthquake Hazards Program, Energy Resources Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Groundwater and Streamflow Information Program, Earthquake Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Empirical modified Mercalli intensity site corrections for towns in eastern North America Empirical modified Mercalli intensity site corrections for towns in eastern North America
Modified Mercalli intensity (MMI) assignments for earthquakes in eastern North America (ENA) were used by Bakun et al. (2003) and Bakun and Hopper (in press) to develop models for estimating the location and moment magnitude M of earthquakes in ENA from MMI observations. The MMI empirical site corrections developed and used by Bakun et al. (2003) and Bakun and Hopper (in press) are...
Authors
W. H. Bakun, M. G. Hopper
Assessment of potential debris-flow peak discharges from basins burned by the 2002 Coal Seam fire, Colorado Assessment of potential debris-flow peak discharges from basins burned by the 2002 Coal Seam fire, Colorado
These maps present the results of assessments of peak discharges that can potentially be generated by debris flows issuing from the basins burned by the Coal Seam fire of June and July 2002, near Glenwood Springs, Colorado. The maps are based on a regression model for debris-flow peak discharge normalized by average storm intensity as a function of basin gradient and burned extent, and...
Authors
Susan H. Cannon, John A. Michael, Joseph E. Gartner
GHASTLI — Determining physical properties of sediment containing natural and laboratory-formed gas hydrate GHASTLI — Determining physical properties of sediment containing natural and laboratory-formed gas hydrate
Gas-hydrate samples have been recovered at about 16 areas worldwide (Booth et al., 1996). However, gas hydrate is known to occur at about 50 locations on continental margins (Kvenvolden, 1993) and is certainly far more widespread so it may represent a potentially enormous energy resource (Kvenvolden, 1988). But adverse effects related to the presence of hydrate do occur. Gas hydrate...
Authors
William J. Winters, William P. Dillon, Ingo A. Pecher, David H. Mason
Introduction to physical properties and elasticity models Introduction to physical properties and elasticity models
Estimating the in situ methane hydrate volume from seismic surveys requires knowledge of the rock physics relations between wave speeds and elastic moduli in hydrate/sediment mixtures. The elastic moduli of hydrate/sediment mixtures depend on the elastic properties of the individual sedimentary particles and the manner in which they are arranged. In this chapter, we present some rock...
Authors
Jack Dvorkin, Michael B. Helgerud, William F. Waite, Stephen H. Kirby, Amos Nur
The U.S. Atlantic continental margin: The best-known gas hydrate locality The U.S. Atlantic continental margin: The best-known gas hydrate locality
One of the few attempts to date to map gas hydrate over a large area has been made on the Atlantic continental margin of the United States (Dillon et al., 1993, 1994, 1995). This work has resulted in the production of an extensive data base of seismic reflection lines including both single and multichannel lines, and complete GLORIA sidescan sonar coverage. This work was part of the...
Authors
William P. Dillon, Michael D. Max
Southwestern Florida coastal classification maps - Venice Inlet to Cape Romano Southwestern Florida coastal classification maps - Venice Inlet to Cape Romano
No abstract available.
Authors
Robert A. Morton, Russell L. Peterson
New digital geologic maps of U.S. continental margins: Insights to seafloor sedimentary character, aggregate resources and processes New digital geologic maps of U.S. continental margins: Insights to seafloor sedimentary character, aggregate resources and processes
No abstract available.
Authors
S. Williams, Clinton N. Jenkins, J. Currence, S. Penland, J. Reid, Jim Flocks, J. Kindinger, L. Poppe, M. Kulp, F. Manheim, M. Hampton, C. Polloni, J. Rowland
Simple models for predicting dune erosion hazards along the outer banks of North Carolina Simple models for predicting dune erosion hazards along the outer banks of North Carolina
No abstract available.
Authors
L.M. Wetzell, P.A. Howd, A. H. Sallenger
Erosion in southern Monterey Bay during the 1997-98 El Nino Erosion in southern Monterey Bay during the 1997-98 El Nino
No abstract available.
Authors
E.B. Thornton, L. Egley, A. H. Sallenger
Determination of water depth with high-resolution satellite imagery over variable bottom types Determination of water depth with high-resolution satellite imagery over variable bottom types
A standard algorithm for determining depth in clear water from passive sensors exists; but it requires tuning of five parameters and does not retrieve depths where the bottom has an extremely low albedo. To address these issues, we developed an empirical solution using a ratio of reflectances that has only two tunable parameters and can be applied to low-albedo features. The two...
Authors
Richard P. Stumpf, Kristine Holderied, Mark Sinclair